#include "../core/hcd.h"
#include "../core/hub.h"
-#define DRIVER_VERSION "v0.05"
+#define DRIVER_VERSION "v0.06"
#define DRIVER_AUTHOR "Gabor Juhos <juhosg at openwrt.org>"
#define DRIVER_DESC "ADMtek USB 1.1 Host Controller Driver"
/*-------------------------------------------------------------------------*/
-#define ADMHC_VERBOSE_DEBUG /* not always helpful */
+#undef ADMHC_VERBOSE_DEBUG /* not always helpful */
/* For initializing controller (mask in an HCFS mode too) */
#define OHCI_CONTROL_INIT OHCI_CTRL_CBSR
#define ADMHC_INTR_INIT \
( ADMHC_INTR_MIE | ADMHC_INTR_INSM | ADMHC_INTR_FATI \
- | ADMHC_INTR_RESI | ADMHC_INTR_TDC | ADMHC_INTR_BABI )
+ | ADMHC_INTR_RESI | ADMHC_INTR_TDC | ADMHC_INTR_BABI \
+ | ADMHC_INTR_7 | ADMHC_INTR_6 )
/*-------------------------------------------------------------------------*/
static void admhc_usb_reset(struct admhcd *ahcd)
{
+ admhc_dbg(ahcd, "usb reset\n");
ahcd->host_control = ADMHC_BUSS_RESET;
admhc_writel(ahcd, ahcd->host_control, &ahcd->regs->host_control);
}
{
struct admhcd *ahcd;
+ admhc_dbg(ahcd, "shutdown\n");
+
ahcd = hcd_to_admhcd(hcd);
admhc_intr_disable(ahcd, ADMHC_INTR_MIE);
admhc_dma_disable(ahcd);
ahcd->ed_head = NULL;
}
-#define ED_DUMMY_INFO (ED_SPEED_FULL | ED_SKIP)
+#define ED_DUMMY_INFO 0
static int admhc_eds_init(struct admhcd *ahcd)
{
break;
}
admhc_writel(ahcd, ahcd->host_control, &ahcd->regs->host_control);
-
msleep(temp);
+
temp = admhc_read_rhdesc(ahcd);
if (!(temp & ADMHC_RH_NPS)) {
/* power down each port */
admhc_err(ahcd, "USB HC reset timed out!\n");
return -1;
}
- udelay (1);
+ udelay(1);
}
/* enable HOST mode, before access any host specific register */
hcd->poll_rh = 1;
hcd->uses_new_polling = 1;
-#if 0
- /* wake on ConnectStatusChange, matching external hubs */
- admhc_writel(ahcd, RH_HS_DRWE, &ahcd->regs->roothub.status);
-#else
- /* FIXME roothub_write_status (ahcd, ADMHC_RH_DRWE); */
-#endif
-
- /* Choose the interrupts we care about now, others later on demand */
- admhc_intr_ack(ahcd, ~0);
- admhc_intr_enable(ahcd, ADMHC_INTR_INIT);
-
- admhc_writel(ahcd, ADMHC_RH_NPS | ADMHC_RH_LPSC, &ahcd->regs->rhdesc);
-
/* start controller operations */
ahcd->host_control = ADMHC_BUSS_OPER;
admhc_writel(ahcd, ahcd->host_control, &ahcd->regs->host_control);
+ hcd->state = HC_STATE_RUNNING;
temp = 20;
while ((admhc_readl(ahcd, &ahcd->regs->host_control)
mdelay(1);
}
- hcd->state = HC_STATE_RUNNING;
- ahcd->next_statechange = jiffies + STATECHANGE_DELAY;
+#if 0
+ /* FIXME */
+ /* wake on ConnectStatusChange, matching external hubs */
+ admhc_writel(ahcd, ADMHC_RH_DRWE, &ahcd->regs->rhdesc);
+#endif
+
+ /* Choose the interrupts we care about now, others later on demand */
+ temp = ADMHC_INTR_INIT;
+ admhc_intr_ack(ahcd, ~0);
+ admhc_intr_enable(ahcd, temp);
+ admhc_writel(ahcd, ADMHC_RH_NPS | ADMHC_RH_LPSC, &ahcd->regs->rhdesc);
+
+ ahcd->next_statechange = jiffies + STATECHANGE_DELAY;
spin_unlock_irq(&ahcd->lock);
mdelay(ADMHC_POTPGT);
+ hcd->state = HC_STATE_RUNNING;
return 0;
}
u32 ints;
ints = admhc_readl(ahcd, ®s->int_status);
- if (!(ints & ADMHC_INTR_INTA))
+ if (!(ints & ADMHC_INTR_INTA)) {
/* no unmasked interrupt status is set */
+ admhc_err(ahcd, "spurious interrupt %08x\n", ints);
return IRQ_NONE;
+ }
ints &= admhc_readl(ahcd, ®s->int_enable);
- if (!ints)
+ if (!ints) {
+ admhc_err(ahcd, "hardware irq problems?\n");
return IRQ_NONE;
+ }
+
+ if (ints & ADMHC_INTR_6) {
+ admhc_err(ahcd, "unknown interrupt 6\n");
+ admhc_dump(ahcd, 0);
+ }
+
+ if (ints & ADMHC_INTR_7) {
+ admhc_err(ahcd, "unknown interrupt 7\n");
+ admhc_dump(ahcd, 0);
+ }
if (ints & ADMHC_INTR_FATI) {
admhc_disable(ahcd);
admhc_intr_ack(ahcd, ADMHC_INTR_RESI);
hcd->poll_rh = 1;
if (ahcd->autostop) {
+ spin_lock(&ahcd->lock);
admhc_rh_resume(ahcd);
+ spin_unlock(&ahcd->lock);
} else
usb_hcd_resume_root_hub(hcd);
}
if (ints & ADMHC_INTR_TDC) {
- admhc_intr_ack(ahcd, ADMHC_INTR_TDC);
+ admhc_vdbg(ahcd, "Transfer Descriptor Complete\n");
if (HC_IS_RUNNING(hcd->state))
admhc_intr_disable(ahcd, ADMHC_INTR_TDC);
- admhc_vdbg(ahcd, "Transfer Descriptor Complete\n");
spin_lock(&ahcd->lock);
admhc_td_complete(ahcd);
spin_unlock(&ahcd->lock);
if (ints & ADMHC_INTR_SO) {
/* could track INTR_SO to reduce available PCI/... bandwidth */
- admhc_vdbg(ahcd, "Schedule Overrun\n");
+ admhc_err(ahcd, "Schedule Overrun\n");
}
if (ints & ADMHC_INTR_SOFI) {
- admhc_intr_ack(ahcd, ADMHC_INTR_SOFI);
spin_lock(&ahcd->lock);
/* handle any pending ED removes */
admhc_finish_unlinks(ahcd, admhc_frame_no(ahcd));
- admhc_sof_refill(ahcd);
spin_unlock(&ahcd->lock);
}
break;
}
+ info |= ED_SKIP;
+
ed->dummy = td;
ed->state = ED_NEW;
ed->type = type;
static struct ed *ed_get(struct admhcd *ahcd, struct usb_host_endpoint *ep,
struct usb_device *udev, unsigned int pipe, int interval)
{
- struct ed *ed;
- unsigned long flags;
+ struct ed *ed;
- spin_lock_irqsave(&ahcd->lock, flags);
ed = ep->hcpriv;
if (!ed) {
u32 info;
if (ed)
ep->hcpriv = ed;
}
- spin_unlock_irqrestore(&ahcd->lock, flags);
return ed;
}
+static void ed_next_urb(struct admhcd *ahcd, struct ed *ed)
+{
+ struct urb_priv *up;
+ u32 carry;
+
+ up = list_entry(ed->urb_pending.next, struct urb_priv, pending);
+ list_del(&up->pending);
+
+ ed->urb_active = up;
+ ed->state = ED_OPER;
+
+#ifdef ADMHC_VERBOSE_DEBUG
+ urb_print(ahcd, up->urb, "NEXT", 0);
+ admhc_dump_ed(ahcd, " ", ed, 0);
+#endif
+
+ up->td[up->td_cnt-1]->hwNextTD = cpu_to_hc32(ahcd, ed->dummy->td_dma);
+
+ carry = hc32_to_cpup(ahcd, &ed->hwHeadP) & ED_C;
+ ed->hwHeadP = cpu_to_hc32(ahcd, up->td[0]->td_dma | carry);
+ ed->hwINFO &= ~cpu_to_hc32(ahcd, ED_SKIP);
+}
+
/* link an ed into the HC chain */
static int ed_schedule(struct admhcd *ahcd, struct ed *ed)
{
if (admhcd_to_hcd(ahcd)->state == HC_STATE_QUIESCING)
return -EAGAIN;
- if (ed->state != ED_NEW)
- return 0;
+ if (ed->state == ED_NEW) {
+ ed->state = ED_IDLE;
- admhc_dump_ed(ahcd, "ED-SCHED", ed, 0);
-
- ed->state = ED_IDLE;
+ old_tail = ahcd->ed_tails[ed->type];
- ed->hwINFO &= ~cpu_to_hc32(ahcd, ED_SKIP);
+ ed->ed_next = old_tail->ed_next;
+ if (ed->ed_next) {
+ ed->ed_next->ed_prev = ed;
+ ed->hwNextED = cpu_to_hc32(ahcd, ed->ed_next->dma);
+ }
+ ed->ed_prev = old_tail;
- old_tail = ahcd->ed_tails[ed->type];
+ old_tail->ed_next = ed;
+ old_tail->hwNextED = cpu_to_hc32(ahcd, ed->dma);
- ed->ed_next = old_tail->ed_next;
- if (ed->ed_next) {
- ed->ed_next->ed_prev = ed;
- ed->hwNextED = cpu_to_hc32(ahcd, ed->ed_next->dma);
+ ahcd->ed_tails[ed->type] = ed;
+ ed->hwINFO &= ~cpu_to_hc32(ahcd, ED_SKIP);
}
- ed->ed_prev = old_tail;
- old_tail->ed_next = ed;
- old_tail->hwNextED = cpu_to_hc32(ahcd, ed->dma);
-
- ahcd->ed_tails[ed->type] = ed;
+#ifdef ADMHC_VERBOSE_DEBUG
+ admhc_dump_ed(ahcd, "ED-SCHED", ed, 0);
+#endif
- admhc_intr_enable(ahcd, ADMHC_INTR_SOFI);
+ if (!ed->urb_active) {
+ ed_next_urb(ahcd, ed);
+ admhc_dma_enable(ahcd);
+ }
return 0;
}
static void ed_deschedule(struct admhcd *ahcd, struct ed *ed)
{
+
+#ifdef ADMHC_VERBOSE_DEBUG
admhc_dump_ed(ahcd, "ED-DESCHED", ed, 0);
+#endif
/* remove this ED from the HC list */
ed->ed_prev->hwNextED = ed->hwNextED;
static void ed_start_deschedule(struct admhcd *ahcd, struct ed *ed)
{
+
+#ifdef ADMHC_VERBOSE_DEBUG
admhc_dump_ed(ahcd, "ED-UNLINK", ed, 0);
+#endif
ed->hwINFO |= cpu_to_hc32(ahcd, ED_SKIP);
-
ed->state = ED_UNLINK;
- /* add this ED into the remove list */
- ed->ed_rm_next = ahcd->ed_rm_list;
- ahcd->ed_rm_list = ed;
-
/* SOF interrupt might get delayed; record the frame counter value that
* indicates when the HC isn't looking at it, so concurrent unlinks
* behave. frame_no wraps every 2^16 msec, and changes right before
*/
ed->tick = admhc_frame_no(ahcd) + 1;
- /* enable SOF interrupt */
admhc_intr_enable(ahcd, ADMHC_INTR_SOFI);
}
u32 cbl = 0;
if (up->td_idx >= up->td_cnt) {
- admhc_dbg(ahcd, "td_fill error, idx=%d, cnt=%d\n", up->td_idx,
+ admhc_err(ahcd, "td_fill error, idx=%d, cnt=%d\n", up->td_idx,
up->td_cnt);
- return;
+ BUG();
}
td = up->td[up->td_idx];
if (!len)
data = 0;
-#if 1
if (up->td_idx == up->td_cnt-1)
-#endif
cbl |= TD_IE;
if (data)
* might not be reported as errors.
*/
} else {
+
+#ifdef ADMHC_VERBOSE_DEBUG
admhc_dump_td(ahcd, "td_done", td);
+#endif
/* count all non-empty packets except control SETUP packet */
if ((type != PIPE_CONTROL || td->index != 0) && dbp != 0) {
/*-------------------------------------------------------------------------*/
-static inline struct td *
-ed_halted(struct admhcd *ahcd, struct td *td, int cc, struct td *rev)
-{
-#if 0
- struct urb *urb = td->urb;
- struct ed *ed = td->ed;
- struct list_head *tmp = td->td_list.next;
- __hc32 toggle = ed->hwHeadP & cpu_to_hc32 (ahcd, ED_C);
-
- admhc_dump_ed(ahcd, "ed halted", td->ed, 1);
- /* clear ed halt; this is the td that caused it, but keep it inactive
- * until its urb->complete() has a chance to clean up.
- */
- ed->hwINFO |= cpu_to_hc32 (ahcd, ED_SKIP);
- wmb ();
- ed->hwHeadP &= ~cpu_to_hc32 (ahcd, ED_H);
-
- /* put any later tds from this urb onto the donelist, after 'td',
- * order won't matter here: no errors, and nothing was transferred.
- * also patch the ed so it looks as if those tds completed normally.
- */
- while (tmp != &ed->td_list) {
- struct td *next;
- __hc32 info;
-
- next = list_entry(tmp, struct td, td_list);
- tmp = next->td_list.next;
-
- if (next->urb != urb)
- break;
-
- /* NOTE: if multi-td control DATA segments get supported,
- * this urb had one of them, this td wasn't the last td
- * in that segment (TD_R clear), this ed halted because
- * of a short read, _and_ URB_SHORT_NOT_OK is clear ...
- * then we need to leave the control STATUS packet queued
- * and clear ED_SKIP.
- */
- info = next->hwINFO;
-#if 0 /* FIXME */
- info |= cpu_to_hc32 (ahcd, TD_DONE);
- info &= ~cpu_to_hc32 (ahcd, TD_CC);
-#endif
- next->hwINFO = info;
-
- next->next_dl_td = rev;
- rev = next;
-
- ed->hwHeadP = next->hwNextTD | toggle;
- }
-
- /* help for troubleshooting: report anything that
- * looks odd ... that doesn't include protocol stalls
- * (or maybe some other things)
- */
- switch (cc) {
- case TD_CC_DATAUNDERRUN:
- if ((urb->transfer_flags & URB_SHORT_NOT_OK) == 0)
- break;
- /* fallthrough */
- case TD_CC_STALL:
- if (usb_pipecontrol (urb->pipe))
- break;
- /* fallthrough */
- default:
- admhc_dbg (ahcd,
- "urb %p path %s ep%d%s %08x cc %d --> status %d\n",
- urb, urb->dev->devpath,
- usb_pipeendpoint (urb->pipe),
- usb_pipein (urb->pipe) ? "in" : "out",
- hc32_to_cpu(ahcd, td->hwINFO),
- cc, cc_to_error [cc]);
- }
-
- return rev;
-#else
- return NULL;
-#endif
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int ed_next_urb(struct admhcd *ahcd, struct ed *ed)
-{
- struct urb_priv *up;
- u32 carry;
-
- if (ed->state != ED_IDLE)
- return 1;
-
- if (ed->urb_active)
- return 1;
-
- if (list_empty(&ed->urb_pending))
- return 0;
-
- up = list_entry(ed->urb_pending.next, struct urb_priv, pending);
- list_del(&up->pending);
- ed->urb_active = up;
- ed->state = ED_OPER;
-
-#ifdef ADMHC_VERBOSE_DEBUG
- urb_print(ahcd, up->urb, "NEXT", 0);
- admhc_dump_ed(ahcd, " ", ed, 0);
-#endif
-
- up->td[up->td_cnt-1]->hwNextTD = cpu_to_hc32(ahcd, ed->dummy->td_dma);
-
- carry = hc32_to_cpup(ahcd, &ed->hwHeadP) & ED_C;
- ed->hwHeadP = cpu_to_hc32(ahcd, up->td[0]->td_dma | carry);
- ed->hwINFO &= ~cpu_to_hc32(ahcd, ED_SKIP);
-
- return 1;
-}
-
-static void ed_update(struct admhcd *ahcd, struct ed *ed, int partial)
+static void ed_update(struct admhcd *ahcd, struct ed *ed, int force)
{
struct urb_priv *up;
struct urb *urb;
#ifdef ADMHC_VERBOSE_DEBUG
urb_print(ahcd, urb, "UPDATE", 0);
-#endif
admhc_dump_ed(ahcd, "ED-UPDATE", ed, 1);
+#endif
cc = TD_CC_NOERROR;
for (; up->td_idx < up->td_cnt; up->td_idx++) {
}
}
- if ((up->td_idx != up->td_cnt) && (!partial))
+ if ((up->td_idx != up->td_cnt) && (!force))
/* the URB is not completed yet */
return;
static void admhc_td_complete(struct admhcd *ahcd)
{
struct ed *ed;
+ int more = 0;
for (ed = ahcd->ed_head; ed; ed = ed->ed_next) {
if (ed->state != ED_OPER)
continue;
- if (hc32_to_cpup(ahcd, &ed->hwINFO) & ED_SKIP)
+ if (hc32_to_cpup(ahcd, &ed->hwHeadP) & ED_H) {
+ admhc_dump_ed(ahcd, "ed halted", ed, 1);
+ ed_update(ahcd, ed, 1);
+ ed->hwHeadP &= ~cpu_to_hc32(ahcd, ED_H);
+ } else
+ ed_update(ahcd, ed, 0);
+
+ if (ed->urb_active) {
+ more = 1;
continue;
+ }
- if (hc32_to_cpup(ahcd, &ed->hwHeadP) & ED_H) {
- /* TODO */
+ if (!(list_empty(&ed->urb_pending))) {
+ more = 1;
+ ed_next_urb(ahcd, ed);
continue;
}
- ed_update(ahcd, ed, 0);
+ ed_start_deschedule(ahcd, ed);
}
+
+ if (!more)
+ admhc_dma_disable(ahcd);
+
}
/* there are some urbs/eds to unlink; called in_irq(), with HCD locked */
static void admhc_finish_unlinks(struct admhcd *ahcd, u16 tick)
{
struct ed *ed;
+ int more = 0;
for (ed = ahcd->ed_head; ed; ed = ed->ed_next) {
if (ed->state != ED_UNLINK)
continue;
if (likely(HC_IS_RUNNING(admhcd_to_hcd(ahcd)->state)))
- if (tick_before(tick, ed->tick))
+ if (tick_before(tick, ed->tick)) {
+ more = 1;
continue;
+ }
/* process partial status */
- ed_update(ahcd, ed, 1);
- }
-}
-
-static void admhc_sof_refill(struct admhcd *ahcd)
-{
- struct ed *ed;
- int disable_dma = 1;
-
- for (ed = ahcd->ed_head; ed; ed = ed->ed_next) {
-
- if (hc32_to_cpup(ahcd, &ed->hwHeadP) & ED_H) {
+ if (ed->urb_active)
ed_update(ahcd, ed, 1);
- ed->hwHeadP &= ~cpu_to_hc32 (ahcd, ED_H);
- }
- if (ed_next_urb(ahcd, ed)) {
- disable_dma = 0;
- } else {
- struct ed *tmp;
- tmp = ed->ed_prev;
+ if (list_empty(&ed->urb_pending))
ed_deschedule(ahcd, ed);
- ed = tmp;
- }
+ else
+ ed_schedule(ahcd, ed);
}
- if (disable_dma) {
- admhc_intr_disable(ahcd, ADMHC_INTR_SOFI);
- admhc_dma_disable(ahcd);
- } else {
- admhc_intr_enable(ahcd, ADMHC_INTR_SOFI);
- admhc_dma_enable(ahcd);
- }
+ if (!more)
+ if (likely(HC_IS_RUNNING(admhcd_to_hcd(ahcd)->state)))
+ admhc_intr_disable(ahcd, ADMHC_INTR_SOFI);
}
projects / openwrt / staging / kaloz.git / commitdiff