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uhci: Make uhci_fill_queue() actually operate on an UHCIQueue 

And move its calling point to handle_td, this removes the ep_ret ugliness,
and prepates the way for further cleanups in the follow-up patches in this
patch-set.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Hans de Goede 2012-10-24 18:31:12 +02:00 committed by Gerd Hoffmann
parent 963a68b54f
commit a4f30cd766
1 changed files with 16 additions and 15 deletions
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31
hw/usb/hcd-uhci.c
View File

@ -161,6 +161,7 @@ typedef struct UHCI_QH {
} UHCI_QH; } UHCI_QH;
static void uhci_async_cancel(UHCIAsync *async); static void uhci_async_cancel(UHCIAsync *async);
static void uhci_queue_fill(UHCIQueue *q, UHCI_TD *td, struct USBEndpoint *ep);
static inline int32_t uhci_queue_token(UHCI_TD *td) static inline int32_t uhci_queue_token(UHCI_TD *td)
{ {
@ -784,9 +785,8 @@ out:
return err; return err;
} }
static int uhci_handle_td(UHCIState *s, uint32_t td_addr, UHCI_TD *td, static int uhci_handle_td(UHCIState *s, UHCIQueue *q,
uint32_t *int_mask, bool queuing, UHCI_TD *td, uint32_t td_addr, uint32_t *int_mask)
struct USBEndpoint **ep_ret)
{ {
UHCIAsync *async; UHCIAsync *async;
int len = 0, max_len; int len = 0, max_len;
@ -794,6 +794,7 @@ static int uhci_handle_td(UHCIState *s, uint32_t td_addr, UHCI_TD *td,
bool spd; bool spd;
USBDevice *dev; USBDevice *dev;
USBEndpoint *ep; USBEndpoint *ep;
bool queuing = (q != NULL);
/* Is active ? */ /* Is active ? */
if (!(td->ctrl & TD_CTRL_ACTIVE)) { if (!(td->ctrl & TD_CTRL_ACTIVE)) {
@ -826,7 +827,10 @@ static int uhci_handle_td(UHCIState *s, uint32_t td_addr, UHCI_TD *td,
} }
/* Allocate new packet */ /* Allocate new packet */
async = uhci_async_alloc(uhci_queue_get(s, td), td_addr); if (q == NULL) {
q = uhci_queue_get(s, td);
}
async = uhci_async_alloc(q, td_addr);
/* valid needs to be large enough to handle 10 frame delay /* valid needs to be large enough to handle 10 frame delay
* for initial isochronous requests * for initial isochronous requests
@ -839,9 +843,6 @@ static int uhci_handle_td(UHCIState *s, uint32_t td_addr, UHCI_TD *td,
dev = uhci_find_device(s, (td->token >> 8) & 0x7f); dev = uhci_find_device(s, (td->token >> 8) & 0x7f);
ep = usb_ep_get(dev, pid, (td->token >> 15) & 0xf); ep = usb_ep_get(dev, pid, (td->token >> 15) & 0xf);
if (ep_ret) {
*ep_ret = ep;
}
usb_packet_setup(&async->packet, pid, ep, td_addr, spd, usb_packet_setup(&async->packet, pid, ep, td_addr, spd,
(td->ctrl & TD_CTRL_IOC) != 0); (td->ctrl & TD_CTRL_IOC) != 0);
qemu_sglist_add(&async->sgl, td->buffer, max_len); qemu_sglist_add(&async->sgl, td->buffer, max_len);
@ -870,6 +871,9 @@ static int uhci_handle_td(UHCIState *s, uint32_t td_addr, UHCI_TD *td,
if (len == USB_RET_ASYNC) { if (len == USB_RET_ASYNC) {
uhci_async_link(async); uhci_async_link(async);
if (!queuing) {
uhci_queue_fill(q, td, ep);
}
return TD_RESULT_ASYNC_START; return TD_RESULT_ASYNC_START;
} }
@ -941,24 +945,23 @@ static int qhdb_insert(QhDb *db, uint32_t addr)
return 0; return 0;
} }
static void uhci_fill_queue(UHCIState *s, UHCI_TD *td, struct USBEndpoint *ep) static void uhci_queue_fill(UHCIQueue *q, UHCI_TD *td, struct USBEndpoint *ep)
{ {
uint32_t int_mask = 0; uint32_t int_mask = 0;
uint32_t plink = td->link; uint32_t plink = td->link;
uint32_t token = uhci_queue_token(td);
UHCI_TD ptd; UHCI_TD ptd;
int ret; int ret;
while (is_valid(plink)) { while (is_valid(plink)) {
uhci_read_td(s, &ptd, plink); uhci_read_td(q->uhci, &ptd, plink);
if (!(ptd.ctrl & TD_CTRL_ACTIVE)) { if (!(ptd.ctrl & TD_CTRL_ACTIVE)) {
break; break;
} }
if (uhci_queue_token(&ptd) != token) { if (uhci_queue_token(&ptd) != q->token) {
break; break;
} }
trace_usb_uhci_td_queue(plink & ~0xf, ptd.ctrl, ptd.token); trace_usb_uhci_td_queue(plink & ~0xf, ptd.ctrl, ptd.token);
ret = uhci_handle_td(s, plink, &ptd, &int_mask, true, NULL); ret = uhci_handle_td(q->uhci, q, &ptd, plink, &int_mask);
if (ret == TD_RESULT_ASYNC_CONT) { if (ret == TD_RESULT_ASYNC_CONT) {
break; break;
} }
@ -973,7 +976,6 @@ static void uhci_process_frame(UHCIState *s)
{ {
uint32_t frame_addr, link, old_td_ctrl, val, int_mask; uint32_t frame_addr, link, old_td_ctrl, val, int_mask;
uint32_t curr_qh, td_count = 0; uint32_t curr_qh, td_count = 0;
struct USBEndpoint *curr_ep;
int cnt, ret; int cnt, ret;
UHCI_TD td; UHCI_TD td;
UHCI_QH qh; UHCI_QH qh;
@ -1040,7 +1042,7 @@ static void uhci_process_frame(UHCIState *s)
trace_usb_uhci_td_load(curr_qh & ~0xf, link & ~0xf, td.ctrl, td.token); trace_usb_uhci_td_load(curr_qh & ~0xf, link & ~0xf, td.ctrl, td.token);
old_td_ctrl = td.ctrl; old_td_ctrl = td.ctrl;
ret = uhci_handle_td(s, link, &td, &int_mask, false, &curr_ep); ret = uhci_handle_td(s, NULL, &td, link, &int_mask);
if (old_td_ctrl != td.ctrl) { if (old_td_ctrl != td.ctrl) {
/* update the status bits of the TD */ /* update the status bits of the TD */
val = cpu_to_le32(td.ctrl); val = cpu_to_le32(td.ctrl);
@ -1059,7 +1061,6 @@ static void uhci_process_frame(UHCIState *s)
case TD_RESULT_ASYNC_START: case TD_RESULT_ASYNC_START:
trace_usb_uhci_td_async(curr_qh & ~0xf, link & ~0xf); trace_usb_uhci_td_async(curr_qh & ~0xf, link & ~0xf);
uhci_fill_queue(s, &td, curr_ep);
link = curr_qh ? qh.link : td.link; link = curr_qh ? qh.link : td.link;
continue; continue;