* URB OHCI HCD (Host Controller Driver) for USB on the MPC5200.
*
* (C) Copyright 2003-2004
- * Gary Jennejohn, DENX Software Engineering <gj@denx.de>
+ * Gary Jennejohn, DENX Software Engineering <garyj@denx.de>
*
* (C) Copyright 2004
* Pierre Aubert, Staubli Faverges <p.aubert@staubli.com>
*
+ * Note: Much of this code has been derived from Linux 2.4
+ * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
+ * (C) Copyright 2000-2002 David Brownell
+ *
* See file CREDITS for list of people who contributed to this
* project.
*
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
- * Note: Part of this code has been derived from linux
- *
*/
/*
* IMPORTANT NOTES
#define OHCI_CONTROL_INIT \
(OHCI_CTRL_CBSR & 0x3) | OHCI_CTRL_IE | OHCI_CTRL_PLE
-#define readl(a) (*((vu_long *)(a)))
-#define writel(a, b) (*((vu_long *)(b)) = ((vu_long)a))
+#define readl(a) (*((volatile u32 *)(a)))
+#define writel(a, b) (*((volatile u32 *)(b)) = ((volatile u32)a))
#define min_t(type,x,y) ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
#define m16_swap(x) swap_16(x)
#define m32_swap(x) swap_32(x)
-#ifdef CONFIG_MPC5200
#define ohci_cpu_to_le16(x) (x)
#define ohci_cpu_to_le32(x) (x)
-#else
-#define ohci_cpu_to_le16(x) swap_16(x)
-#define ohci_cpu_to_le32(x) swap_32(x)
-#endif
/* global ohci_t */
static ohci_t gohci;
int got_rhsc;
/* device which was disconnected */
struct usb_device *devgone;
+/* flag guarding URB transation */
+int urb_finished = 0;
/*-------------------------------------------------------------------------*/
return -1;
}
+ /* if we have an unfinished URB from previous transaction let's
+ * fail and scream as quickly as possible so as not to corrupt
+ * further communication */
+ if (!urb_finished) {
+ err("sohci_submit_job: URB NOT FINISHED");
+ return -1;
+ }
+ /* we're about to begin a new transaction here so mark the URB unfinished */
+ urb_finished = 0;
+
/* every endpoint has a ed, locate and fill it */
if (!(ed = ep_add_ed (dev, pipe))) {
err("sohci_submit_job: ENOMEM");
td->index = index;
td->data = (__u32)data;
#ifdef OHCI_FILL_TRACE
- if ((usb_pipetype(urb_priv->pipe) == PIPE_BULK) && usb_pipeout(urb_priv->pipe)) {
+ if (usb_pipebulk(urb_priv->pipe) && usb_pipeout(urb_priv->pipe)) {
for (i = 0; i < len; i++)
printf("td->data[%d] %#2x ",i, ((unsigned char *)td->data)[i]);
printf("\n");
else
td->hwBE = 0;
td->hwNextTD = ohci_cpu_to_le32 ((unsigned long)td_pt);
- td->hwPSW [0] = ohci_cpu_to_le16 (((__u32)data & 0x0FFF) | 0xE000);
/* append to queue */
td->ed->hwTailP = td->hwNextTD;
/*-------------------------------------------------------------------------*/
/* prepare all TDs of a transfer */
-
static void td_submit_job (struct usb_device *dev, unsigned long pipe, void *buffer,
int transfer_len, struct devrequest *setup, urb_priv_t *urb, int interval)
{
tdCBP = ohci_cpu_to_le32 (td->hwCBP);
- if (!(usb_pipetype (lurb_priv->pipe) == PIPE_CONTROL &&
+ if (!(usb_pipecontrol(lurb_priv->pipe) &&
((td->index == 0) || (td->index == lurb_priv->length - 1)))) {
if (tdBE != 0) {
if (td->hwCBP == 0)
} else
td_list->ed->hwHeadP &= ohci_cpu_to_le32 (0xfffffff2);
}
-#ifdef CONFIG_MPC5200
td_list->hwNextTD = 0;
-#endif
}
td_list->next_dl_td = td_rev;
td_t *td_list_next = NULL;
ed_t *ed;
int cc = 0;
- int stat = 0xff;
+ int stat = 0;
/* urb_t *urb; */
urb_priv_t *lurb_priv;
__u32 tdINFO, edHeadP, edTailP;
&& (lurb_priv->state != URB_DEL)) {
dbg("ConditionCode %#x", cc);
stat = cc_to_error[cc];
+ urb_finished = 1;
}
}
urb_priv.actual_length = 0;
pkt_print(dev, pipe, buffer, transfer_len, cmd, "SUB(rh)", usb_pipein(pipe));
#endif
- if ((pipe & PIPE_INTERRUPT) == PIPE_INTERRUPT) {
+ if (usb_pipeint(pipe)) {
info("Root-Hub submit IRQ: NOT implemented");
return 0;
}
/* allow more time for a BULK device to react - some are slow */
#define BULK_TO 5000 /* timeout in milliseconds */
- if (usb_pipetype (pipe) == PIPE_BULK)
+ if (usb_pipebulk(pipe))
timeout = BULK_TO;
else
timeout = 100;
stat = USB_ST_CRC_ERR;
break;
}
- if (stat >= 0 && stat < 0xff) {
+
+ /* NOTE: since we are not interrupt driven in U-Boot and always
+ * handle only one URB at a time, we cannot assume the
+ * transaction finished on the first successful return from
+ * hc_interrupt().. unless the flag for current URB is set,
+ * meaning that all TD's to/from device got actually
+ * transferred and processed. If the current URB is not
+ * finished we need to re-iterate this loop so as
+ * hc_interrupt() gets called again as there needs to be some
+ * more TD's to process still */
+ if ((stat >= 0) && (stat != 0xff) && (urb_finished)) {
/* 0xff is returned for an SF-interrupt */
break;
}
+
if (--timeout) {
wait_ms(1);
+ if (!urb_finished)
+ dbg("\%");
+
} else {
err("CTL:TIMEOUT ");
+ dbg("submit_common_msg: TO status %x\n", stat);
stat = USB_ST_CRC_ERR;
+ urb_finished = 1;
break;
}
}
+#if 0
/* we got an Root Hub Status Change interrupt */
if (got_rhsc) {
#ifdef DEBUG
devgone = dev;
}
}
+#endif
dev->status = stat;
dev->act_len = transfer_len;
int ints;
int stat = -1;
- if ((ohci->hcca->done_head != 0) && !(ohci_cpu_to_le32 (ohci->hcca->done_head) & 0x01)) {
- ints = OHCI_INTR_WDH;
- } else {
- ints = readl (®s->intrstatus);
+ if ((ohci->hcca->done_head != 0) &&
+ !(ohci_cpu_to_le32(ohci->hcca->done_head) & 0x01)) {
+
+ ints = OHCI_INTR_WDH;
+
+ } else if ((ints = readl (®s->intrstatus)) == ~(u32)0) {
+ ohci->disabled++;
+ err ("%s device removed!", ohci->slot_name);
+ return -1;
+
+ } else if ((ints &= readl (®s->intrenable)) == 0) {
+ dbg("hc_interrupt: returning..\n");
+ return 0xff;
}
/* dbg("Interrupt: %x frame: %x", ints, le16_to_cpu (ohci->hcca->frame_no)); */
if (ints & OHCI_INTR_RHSC) {
got_rhsc = 1;
+ stat = 0xff;
}
if (ints & OHCI_INTR_UE) {
/* FIXME: this assumes SOF (1/ms) interrupts don't get lost... */
if (ints & OHCI_INTR_SF) {
unsigned int frame = ohci_cpu_to_le16 (ohci->hcca->frame_no) & 1;
+ wait_ms(1);
writel (OHCI_INTR_SF, ®s->intrdisable);
if (ohci->ed_rm_list[frame] != NULL)
writel (OHCI_INTR_SF, ®s->intrenable);
{
/* Set the USB Clock */
- *(vu_long *)MPC5XXX_CDM_48_FDC = CONFIG_USB_CDMFDC5xxx;
+ *(vu_long *)MPC5XXX_CDM_48_FDC = CONFIG_USB_CLOCK;
+#ifdef CONFIG_PSC3_USB /* USB is using the alternate configuration */
+ /* remove all PSC3 USB bits first before ORing in ours */
+ *(vu_long *)MPC5XXX_GPS_PORT_CONFIG &= ~0x00804f00;
+#else
/* remove all USB bits first before ORing in ours */
*(vu_long *)MPC5XXX_GPS_PORT_CONFIG &= ~0x00807000;
+#endif
/* Activate USB port */
- *(vu_long *)MPC5XXX_GPS_PORT_CONFIG |= CONFIG_USB_GPSCFG5xxx;
+ *(vu_long *)MPC5XXX_GPS_PORT_CONFIG |= CONFIG_USB_CONFIG;
memset (&gohci, 0, sizeof (ohci_t));
memset (&urb_priv, 0, sizeof (urb_priv_t));
ohci_dump (&gohci, 1);
#endif
ohci_inited = 1;
+ urb_finished = 1;
+
return 0;
}
projects / platform / kernel / u-boot.git / blobdiff