1 files changed, 231 insertions, 96 deletions

diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 97a7ede..494b760 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -103,16 +103,91 @@ static struct pci_device_id ehci_pci_ids[] = {
 # define m32_swap(x) cpu_to_le32(x)
 #endif /* CONFIG_SYS_OHCI_BE_CONTROLLER */
 
+#ifdef CONFIG_DM_USB
+/*
+ * We really should do proper cache flushing everywhere, but for now we only
+ * do it for new (driver-model) usb code to avoid regressions.
+ */
+#define flush_dcache_buffer(addr, size) \
+	flush_dcache_range((unsigned long)(addr), \
+		ALIGN((unsigned long)(addr) + size, ARCH_DMA_MINALIGN))
+#define invalidate_dcache_buffer(addr, size) \
+	invalidate_dcache_range((unsigned long)(addr), \
+		ALIGN((unsigned long)(addr) + size, ARCH_DMA_MINALIGN))
+#else
+#define flush_dcache_buffer(addr, size)
+#define invalidate_dcache_buffer(addr, size)
+#endif
+
+/* Do not use sizeof(ed / td) as our ed / td structs contain extra members */
+#define flush_dcache_ed(addr) flush_dcache_buffer(addr, 16)
+#define flush_dcache_td(addr) flush_dcache_buffer(addr, 16)
+#define flush_dcache_iso_td(addr) flush_dcache_buffer(addr, 32)
+#define flush_dcache_hcca(addr) flush_dcache_buffer(addr, 256)
+#define invalidate_dcache_ed(addr) invalidate_dcache_buffer(addr, 16)
+#define invalidate_dcache_td(addr) invalidate_dcache_buffer(addr, 16)
+#define invalidate_dcache_iso_td(addr) invalidate_dcache_buffer(addr, 32)
+#define invalidate_dcache_hcca(addr) invalidate_dcache_buffer(addr, 256)
+
 /* global ohci_t */
 static ohci_t gohci;
 /* this must be aligned to a 256 byte boundary */
 struct ohci_hcca ghcca[1];
-/* a pointer to the aligned storage */
-struct ohci_hcca *phcca;
-/* this allocates EDs for all possible endpoints */
-struct ohci_device ohci_dev;
-/* device which was disconnected */
-struct usb_device *devgone;
+
+/* mapping of the OHCI CC status to error codes */
+static int cc_to_error[16] = {
+	/* No  Error  */	       0,
+	/* CRC Error  */	       USB_ST_CRC_ERR,
+	/* Bit Stuff  */	       USB_ST_BIT_ERR,
+	/* Data Togg  */	       USB_ST_CRC_ERR,
+	/* Stall      */	       USB_ST_STALLED,
+	/* DevNotResp */	       -1,
+	/* PIDCheck   */	       USB_ST_BIT_ERR,
+	/* UnExpPID   */	       USB_ST_BIT_ERR,
+	/* DataOver   */	       USB_ST_BUF_ERR,
+	/* DataUnder  */	       USB_ST_BUF_ERR,
+	/* reservd    */	       -1,
+	/* reservd    */	       -1,
+	/* BufferOver */	       USB_ST_BUF_ERR,
+	/* BuffUnder  */	       USB_ST_BUF_ERR,
+	/* Not Access */	       -1,
+	/* Not Access */	       -1
+};
+
+static const char *cc_to_string[16] = {
+	"No Error",
+	"CRC: Last data packet from endpoint contained a CRC error.",
+	"BITSTUFFING: Last data packet from endpoint contained a bit " \
+		     "stuffing violation",
+	"DATATOGGLEMISMATCH: Last packet from endpoint had data toggle PID\n" \
+		     "that did not match the expected value.",
+	"STALL: TD was moved to the Done Queue because the endpoint returned" \
+		     " a STALL PID",
+	"DEVICENOTRESPONDING: Device did not respond to token (IN) or did\n" \
+		     "not provide a handshake (OUT)",
+	"PIDCHECKFAILURE: Check bits on PID from endpoint failed on data PID\n"\
+		     "(IN) or handshake (OUT)",
+	"UNEXPECTEDPID: Receive PID was not valid when encountered or PID\n" \
+		     "value is not defined.",
+	"DATAOVERRUN: The amount of data returned by the endpoint exceeded\n" \
+		     "either the size of the maximum data packet allowed\n" \
+		     "from the endpoint (found in MaximumPacketSize field\n" \
+		     "of ED) or the remaining buffer size.",
+	"DATAUNDERRUN: The endpoint returned less than MaximumPacketSize\n" \
+		     "and that amount was not sufficient to fill the\n" \
+		     "specified buffer",
+	"reserved1",
+	"reserved2",
+	"BUFFEROVERRUN: During an IN, HC received data from endpoint faster\n" \
+		     "than it could be written to system memory",
+	"BUFFERUNDERRUN: During an OUT, HC could not retrieve data from\n" \
+		     "system memory fast enough to keep up with data USB " \
+		     "data rate.",
+	"NOT ACCESSED: This code is set by software before the TD is placed" \
+		     "on a list to be processed by the HC.(1)",
+	"NOT ACCESSED: This code is set by software before the TD is placed" \
+		     "on a list to be processed by the HC.(2)",
+};
 
 static inline u32 roothub_a(struct ohci *hc)
 	{ return ohci_readl(&hc->regs->roothub.a); }
@@ -124,11 +199,42 @@ static inline u32 roothub_portstatus(struct ohci *hc, int i)
 	{ return ohci_readl(&hc->regs->roothub.portstatus[i]); }
 
 /* forward declaration */
-static int hc_interrupt(void);
-static void td_submit_job(struct usb_device *dev, unsigned long pipe,
-			  void *buffer, int transfer_len,
+static int hc_interrupt(ohci_t *ohci);
+static void td_submit_job(ohci_t *ohci, struct usb_device *dev,
+			  unsigned long pipe, void *buffer, int transfer_len,
 			  struct devrequest *setup, urb_priv_t *urb,
 			  int interval);
+static int ep_link(ohci_t * ohci, ed_t * ed);
+static int ep_unlink(ohci_t * ohci, ed_t * ed);
+static ed_t *ep_add_ed(ohci_dev_t *ohci_dev, struct usb_device *usb_dev,
+		       unsigned long pipe, int interval, int load);
+
+/*-------------------------------------------------------------------------*/
+
+/* TDs ... */
+static struct td *td_alloc(ohci_dev_t *ohci_dev, struct usb_device *usb_dev)
+{
+	int i;
+	struct td *td;
+
+	td = NULL;
+	for (i = 0; i < NUM_TD; i++)
+	{
+		if (ohci_dev->tds[i].usb_dev == NULL)
+		{
+			td = &ohci_dev->tds[i];
+			td->usb_dev = usb_dev;
+			break;
+		}
+	}
+
+	return td;
+}
+
+static inline void ed_free(struct ed *ed)
+{
+	ed->usb_dev = NULL;
+}
 
 /*-------------------------------------------------------------------------*
  * URB support functions
@@ -158,18 +264,18 @@ static void urb_free_priv(urb_priv_t *urb)
 /*-------------------------------------------------------------------------*/
 
 #ifdef DEBUG
-static int sohci_get_current_frame_number(struct usb_device *dev);
+static int sohci_get_current_frame_number(ohci_t *ohci);
 
 /* debug| print the main components of an URB
  * small: 0) header + data packets 1) just header */
 
-static void pkt_print(urb_priv_t *purb, struct usb_device *dev,
+static void pkt_print(ohci_t *ohci, urb_priv_t *purb, struct usb_device *dev,
 		      unsigned long pipe, void *buffer, int transfer_len,
 		      struct devrequest *setup, char *str, int small)
 {
 	dbg("%s URB:[%4x] dev:%2lu,ep:%2lu-%c,type:%s,len:%d/%d stat:%#lx",
 			str,
-			sohci_get_current_frame_number(dev),
+			sohci_get_current_frame_number(ohci),
 			usb_pipedevice(pipe),
 			usb_pipeendpoint(pipe),
 			usb_pipeout(pipe)? 'O': 'I',
@@ -213,9 +319,11 @@ void ep_print_int_eds(ohci_t *ohci, char *str)
 		ed_p = &(ohci->hcca->int_table [i]);
 		if (*ed_p == 0)
 		    continue;
+		invalidate_dcache_ed(ed_p);
 		printf(__FILE__ ": %s branch int %2d(%2x):", str, i, i);
 		while (*ed_p != 0 && j--) {
 			ed_t *ed = (ed_t *)m32_swap(ed_p);
+			invalidate_dcache_ed(ed);
 			printf(" ed: %4x;", ed->hwINFO);
 			ed_p = &ed->hwNextED;
 		}
@@ -246,6 +354,7 @@ static void maybe_print_eds(char *label, __u32 value)
 
 	if (value) {
 		dbg("%s %08x", label, value);
+		invalidate_dcache_ed(edp);
 		dbg("%08x", edp->hwINFO);
 		dbg("%08x", edp->hwTailP);
 		dbg("%08x", edp->hwHeadP);
@@ -380,6 +489,7 @@ static void ohci_dump(ohci_t *controller, int verbose)
 	ohci_dump_status(controller);
 	if (verbose)
 		ep_print_int_eds(controller, "hcca");
+	invalidate_dcache_hcca(controller->hcca);
 	dbg("hcca frame #%04x", controller->hcca->frame_no);
 	ohci_dump_roothub(controller, 1);
 }
@@ -391,9 +501,9 @@ static void ohci_dump(ohci_t *controller, int verbose)
 
 /* get a transfer request */
 
-int sohci_submit_job(urb_priv_t *urb, struct devrequest *setup)
+int sohci_submit_job(ohci_t *ohci, ohci_dev_t *ohci_dev, urb_priv_t *urb,
+		     struct devrequest *setup)
 {
-	ohci_t *ohci;
 	ed_t *ed;
 	urb_priv_t *purb_priv = urb;
 	int i, size = 0;
@@ -403,8 +513,6 @@ int sohci_submit_job(urb_priv_t *urb, struct devrequest *setup)
 	int transfer_len = urb->transfer_buffer_length;
 	int interval = urb->interval;
 
-	ohci = &gohci;
-
 	/* when controller's hung, permit only roothub cleanup attempts
 	 * such as powering down ports */
 	if (ohci->disabled) {
@@ -417,7 +525,7 @@ int sohci_submit_job(urb_priv_t *urb, struct devrequest *setup)
 	urb->finished = 0;
 
 	/* every endpoint has a ed, locate and fill it */
-	ed = ep_add_ed(dev, pipe, interval, 1);
+	ed = ep_add_ed(ohci_dev, dev, pipe, interval, 1);
 	if (!ed) {
 		err("sohci_submit_job: ENOMEM");
 		return -1;
@@ -453,7 +561,7 @@ int sohci_submit_job(urb_priv_t *urb, struct devrequest *setup)
 	/* allocate the TDs */
 	/* note that td[0] was allocated in ep_add_ed */
 	for (i = 0; i < size; i++) {
-		purb_priv->td[i] = td_alloc(dev);
+		purb_priv->td[i] = td_alloc(ohci_dev, dev);
 		if (!purb_priv->td[i]) {
 			purb_priv->length = i;
 			urb_free_priv(purb_priv);
@@ -473,7 +581,7 @@ int sohci_submit_job(urb_priv_t *urb, struct devrequest *setup)
 		ep_link(ohci, ed);
 
 	/* fill the TDs and link it to the ed */
-	td_submit_job(dev, pipe, buffer, transfer_len,
+	td_submit_job(ohci, dev, pipe, buffer, transfer_len,
 		      setup, purb_priv, interval);
 
 	return 0;
@@ -495,7 +603,7 @@ static inline int sohci_return_job(struct ohci *hc, urb_priv_t *urb)
 			ohci_readl(&regs->intrdisable); /* PCI posting flush */
 		}
 		urb->actual_length = 0;
-		td_submit_job(
+		td_submit_job(  hc,
 				urb->dev,
 				urb->pipe,
 				urb->transfer_buffer,
@@ -517,11 +625,9 @@ static inline int sohci_return_job(struct ohci *hc, urb_priv_t *urb)
 
 #ifdef DEBUG
 /* tell us the current USB frame number */
-
-static int sohci_get_current_frame_number(struct usb_device *usb_dev)
+static int sohci_get_current_frame_number(ohci_t *ohci)
 {
-	ohci_t *ohci = &gohci;
-
+	invalidate_dcache_hcca(ohci->hcca);
 	return m16_swap(ohci->hcca->frame_no);
 }
 #endif
@@ -600,6 +706,7 @@ static int ep_link(ohci_t *ohci, ed_t *edi)
 	switch (ed->type) {
 	case PIPE_CONTROL:
 		ed->hwNextED = 0;
+		flush_dcache_ed(ed);
 		if (ohci->ed_controltail == NULL)
 			ohci_writel(ed, &ohci->regs->ed_controlhead);
 		else
@@ -617,6 +724,7 @@ static int ep_link(ohci_t *ohci, ed_t *edi)
 
 	case PIPE_BULK:
 		ed->hwNextED = 0;
+		flush_dcache_ed(ed);
 		if (ohci->ed_bulktail == NULL)
 			ohci_writel(ed, &ohci->regs->ed_bulkhead);
 		else
@@ -649,7 +757,9 @@ static int ep_link(ohci_t *ohci, ed_t *edi)
 					inter = ep_rev(6,
 						 ((ed_t *)ed_p)->int_interval);
 			ed->hwNextED = *ed_p;
+			flush_dcache_ed(ed);
 			*ed_p = m32_swap((unsigned long)ed);
+			flush_dcache_hcca(ohci->hcca);
 		}
 		break;
 	}
@@ -662,6 +772,8 @@ static int ep_link(ohci_t *ohci, ed_t *edi)
 static void periodic_unlink(struct ohci *ohci, volatile struct ed *ed,
 			    unsigned index, unsigned period)
 {
+	__maybe_unused unsigned long aligned_ed_p;
+
 	for (; index < NUM_INTS; index += period) {
 		__u32	*ed_p = &ohci->hcca->int_table [index];
 
@@ -670,6 +782,12 @@ static void periodic_unlink(struct ohci *ohci, volatile struct ed *ed,
 			if (((struct ed *)
 					m32_swap((unsigned long)ed_p)) == ed) {
 				*ed_p = ed->hwNextED;
+#ifdef CONFIG_DM_USB
+				aligned_ed_p = (unsigned long)ed_p;
+				aligned_ed_p &= ~(ARCH_DMA_MINALIGN - 1);
+				flush_dcache_range(aligned_ed_p,
+					aligned_ed_p + ARCH_DMA_MINALIGN);
+#endif
 				break;
 			}
 			ed_p = &(((struct ed *)
@@ -689,6 +807,7 @@ static int ep_unlink(ohci_t *ohci, ed_t *edi)
 	int i;
 
 	ed->hwINFO |= m32_swap(OHCI_ED_SKIP);
+	flush_dcache_ed(ed);
 
 	switch (ed->type) {
 	case PIPE_CONTROL:
@@ -702,6 +821,7 @@ static int ep_unlink(ohci_t *ohci, ed_t *edi)
 				&ohci->regs->ed_controlhead);
 		} else {
 			ed->ed_prev->hwNextED = ed->hwNextED;
+			flush_dcache_ed(ed->ed_prev);
 		}
 		if (ohci->ed_controltail == ed) {
 			ohci->ed_controltail = ed->ed_prev;
@@ -722,6 +842,7 @@ static int ep_unlink(ohci_t *ohci, ed_t *edi)
 			       &ohci->regs->ed_bulkhead);
 		} else {
 			ed->ed_prev->hwNextED = ed->hwNextED;
+			flush_dcache_ed(ed->ed_prev);
 		}
 		if (ohci->ed_bulktail == ed) {
 			ohci->ed_bulktail = ed->ed_prev;
@@ -751,14 +872,14 @@ static int ep_unlink(ohci_t *ohci, ed_t *edi)
  * info fields are setted anyway even though most of them should not
  * change
  */
-static ed_t *ep_add_ed(struct usb_device *usb_dev, unsigned long pipe,
-			int interval, int load)
+static ed_t *ep_add_ed(ohci_dev_t *ohci_dev, struct usb_device *usb_dev,
+		       unsigned long pipe, int interval, int load)
 {
 	td_t *td;
 	ed_t *ed_ret;
 	volatile ed_t *ed;
 
-	ed = ed_ret = &ohci_dev.ed[(usb_pipeendpoint(pipe) << 1) |
+	ed = ed_ret = &ohci_dev->ed[(usb_pipeendpoint(pipe) << 1) |
 			(usb_pipecontrol(pipe)? 0: usb_pipeout(pipe))];
 
 	if ((ed->state & ED_DEL) || (ed->state & ED_URB_DEL)) {
@@ -769,12 +890,12 @@ static ed_t *ep_add_ed(struct usb_device *usb_dev, unsigned long pipe,
 
 	if (ed->state == ED_NEW) {
 		/* dummy td; end of td list for ed */
-		td = td_alloc(usb_dev);
+		td = td_alloc(ohci_dev, usb_dev);
 		ed->hwTailP = m32_swap((unsigned long)td);
 		ed->hwHeadP = ed->hwTailP;
 		ed->state = ED_UNLINK;
 		ed->type = usb_pipetype(pipe);
-		ohci_dev.ed_cnt++;
+		ohci_dev->ed_cnt++;
 	}
 
 	ed->hwINFO = m32_swap(usb_pipedevice(pipe)
@@ -790,6 +911,8 @@ static ed_t *ep_add_ed(struct usb_device *usb_dev, unsigned long pipe,
 		ed->int_load = load;
 	}
 
+	flush_dcache_ed(ed);
+
 	return ed_ret;
 }
 
@@ -815,6 +938,7 @@ static void td_fill(ohci_t *ohci, unsigned int info,
 	/* use this td as the next dummy */
 	td_pt = urb_priv->td [index];
 	td_pt->hwNextTD = 0;
+	flush_dcache_td(td_pt);
 
 	/* fill the old dummy TD */
 	td = urb_priv->td [index] =
@@ -842,27 +966,30 @@ static void td_fill(ohci_t *ohci, unsigned int info,
 		td->hwBE = 0;
 
 	td->hwNextTD = m32_swap((unsigned long)td_pt);
+	flush_dcache_td(td);
 
 	/* append to queue */
 	td->ed->hwTailP = td->hwNextTD;
+	flush_dcache_ed(td->ed);
 }
 
 /*-------------------------------------------------------------------------*/
 
 /* prepare all TDs of a transfer */
 
-static void td_submit_job(struct usb_device *dev, unsigned long pipe,
-			  void *buffer, int transfer_len,
+static void td_submit_job(ohci_t *ohci, struct usb_device *dev,
+			  unsigned long pipe, void *buffer, int transfer_len,
 			  struct devrequest *setup, urb_priv_t *urb,
 			  int interval)
 {
-	ohci_t *ohci = &gohci;
 	int data_len = transfer_len;
 	void *data;
 	int cnt = 0;
 	__u32 info = 0;
 	unsigned int toggle = 0;
 
+	flush_dcache_buffer(buffer, data_len);
+
 	/* OHCI handles the DATA-toggles itself, we just use the USB-toggle
 	 * bits for reseting */
 	if (usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe))) {
@@ -902,6 +1029,7 @@ static void td_submit_job(struct usb_device *dev, unsigned long pipe,
 	case PIPE_CONTROL:
 		/* Setup phase */
 		info = TD_CC | TD_DP_SETUP | TD_T_DATA0;
+		flush_dcache_buffer(setup, 8);
 		td_fill(ohci, info, setup, 8, dev, cnt++, urb);
 
 		/* Optional Data phase */
@@ -914,7 +1042,7 @@ static void td_submit_job(struct usb_device *dev, unsigned long pipe,
 		}
 
 		/* Status phase */
-		info = usb_pipeout(pipe)?
+		info = (usb_pipeout(pipe) || data_len == 0) ?
 			TD_CC | TD_DP_IN | TD_T_DATA1:
 			TD_CC | TD_DP_OUT | TD_T_DATA1;
 		td_fill(ohci, info, data, 0, dev, cnt++, urb);
@@ -973,6 +1101,7 @@ static void check_status(td_t *td_list)
 	if (cc) {
 		err(" USB-error: %s (%x)", cc_to_string[cc], cc);
 
+		invalidate_dcache_ed(td_list->ed);
 		if (*phwHeadP & m32_swap(0x1)) {
 			if (lurb_priv &&
 			    ((td_list->index + 1) < urb_len)) {
@@ -985,9 +1114,11 @@ static void check_status(td_t *td_list)
 						     td_list->index - 1;
 			} else
 				*phwHeadP &= m32_swap(0xfffffff2);
+			flush_dcache_ed(td_list->ed);
 		}
 #ifdef CONFIG_MPC5200
 		td_list->hwNextTD = 0;
+		flush_dcache_td(td_list);
 #endif
 	}
 }
@@ -1000,11 +1131,14 @@ static td_t *dl_reverse_done_list(ohci_t *ohci)
 	td_t *td_rev = NULL;
 	td_t *td_list = NULL;
 
+	invalidate_dcache_hcca(ohci->hcca);
 	td_list_hc = m32_swap(ohci->hcca->done_head) & 0xfffffff0;
 	ohci->hcca->done_head = 0;
+	flush_dcache_hcca(ohci->hcca);
 
 	while (td_list_hc) {
 		td_list = (td_t *)td_list_hc;
+		invalidate_dcache_td(td_list);
 		check_status(td_list);
 		td_list->next_dl_td = td_rev;
 		td_rev = td_list;
@@ -1039,6 +1173,7 @@ static int takeback_td(ohci_t *ohci, td_t *td_list)
 	urb_priv_t *lurb_priv;
 	__u32 tdINFO, edHeadP, edTailP;
 
+	invalidate_dcache_td(td_list);
 	tdINFO = m32_swap(td_list->hwINFO);
 
 	ed = td_list->ed;
@@ -1064,6 +1199,7 @@ static int takeback_td(ohci_t *ohci, td_t *td_list)
 		lurb_priv->td_cnt, lurb_priv->length);
 
 	if (ed->state != ED_NEW && (!usb_pipeint(lurb_priv->pipe))) {
+		invalidate_dcache_ed(ed);
 		edHeadP = m32_swap(ed->hwHeadP) & 0xfffffff0;
 		edTailP = m32_swap(ed->hwTailP);
 
@@ -1100,16 +1236,16 @@ static int dl_done_list(ohci_t *ohci)
 #define OK(x)			len = (x); break
 #ifdef DEBUG
 #define WR_RH_STAT(x)		{info("WR:status %#8x", (x)); ohci_writel((x), \
-						&gohci.regs->roothub.status); }
+						&ohci->regs->roothub.status); }
 #define WR_RH_PORTSTAT(x)	{info("WR:portstatus[%d] %#8x", wIndex-1, \
-	(x)); ohci_writel((x), &gohci.regs->roothub.portstatus[wIndex-1]); }
+	(x)); ohci_writel((x), &ohci->regs->roothub.portstatus[wIndex-1]); }
 #else
-#define WR_RH_STAT(x)		ohci_writel((x), &gohci.regs->roothub.status)
+#define WR_RH_STAT(x)		ohci_writel((x), &ohci->regs->roothub.status)
 #define WR_RH_PORTSTAT(x)	ohci_writel((x), \
-				    &gohci.regs->roothub.portstatus[wIndex-1])
+				    &ohci->regs->roothub.portstatus[wIndex-1])
 #endif
-#define RD_RH_STAT		roothub_status(&gohci)
-#define RD_RH_PORTSTAT		roothub_portstatus(&gohci, wIndex-1)
+#define RD_RH_STAT		roothub_status(ohci)
+#define RD_RH_PORTSTAT		roothub_portstatus(ohci, wIndex-1)
 
 /* request to virtual root hub */
 
@@ -1137,8 +1273,9 @@ int rh_check_port_status(ohci_t *controller)
 	return res;
 }
 
-static int ohci_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
-		void *buffer, int transfer_len, struct devrequest *cmd)
+static int ohci_submit_rh_msg(ohci_t *ohci, struct usb_device *dev,
+	unsigned long pipe, void *buffer, int transfer_len,
+	struct devrequest *cmd)
 {
 	void *data = buffer;
 	int leni = transfer_len;
@@ -1151,7 +1288,7 @@ static int ohci_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
 	ALLOC_ALIGN_BUFFER(__u8, databuf, 16, sizeof(u32));
 
 #ifdef DEBUG
-pkt_print(NULL, dev, pipe, buffer, transfer_len,
+pkt_print(ohci, NULL, dev, pipe, buffer, transfer_len,
 	  cmd, "SUB(rh)", usb_pipein(pipe));
 #else
 	mdelay(1);
@@ -1245,7 +1382,7 @@ pkt_print(NULL, dev, pipe, buffer, transfer_len,
 		break;
 
 	case RH_SET_ADDRESS:
-		gohci.rh.devnum = wValue;
+		ohci->rh.devnum = wValue;
 		OK(0);
 
 	case RH_GET_DESCRIPTOR:
@@ -1290,7 +1427,7 @@ pkt_print(NULL, dev, pipe, buffer, transfer_len,
 
 	case RH_GET_DESCRIPTOR | RH_CLASS:
 	{
-		__u32 temp = roothub_a(&gohci);
+		__u32 temp = roothub_a(ohci);
 
 		databuf[0] = 9;		/* min length; */
 		databuf[1] = 0x29;
@@ -1309,7 +1446,7 @@ pkt_print(NULL, dev, pipe, buffer, transfer_len,
 		databuf[4] = 0;
 		databuf[5] = (temp & RH_A_POTPGT) >> 24;
 		databuf[6] = 0;
-		temp = roothub_b(&gohci);
+		temp = roothub_b(ohci);
 		databuf[7] = temp & RH_B_DR;
 		if (databuf[2] < 7) {
 			databuf[8] = 0xff;
@@ -1338,7 +1475,7 @@ pkt_print(NULL, dev, pipe, buffer, transfer_len,
 	}
 
 #ifdef	DEBUG
-	ohci_dump_roothub(&gohci, 1);
+	ohci_dump_roothub(ohci, 1);
 #else
 	mdelay(1);
 #endif
@@ -1350,7 +1487,7 @@ pkt_print(NULL, dev, pipe, buffer, transfer_len,
 	dev->status = stat;
 
 #ifdef DEBUG
-	pkt_print(NULL, dev, pipe, buffer,
+	pkt_print(ohci, NULL, dev, pipe, buffer,
 		  transfer_len, cmd, "RET(rh)", 0/*usb_pipein(pipe)*/);
 #else
 	mdelay(1);
@@ -1363,8 +1500,9 @@ pkt_print(NULL, dev, pipe, buffer, transfer_len,
 
 /* common code for handling submit messages - used for all but root hub */
 /* accesses. */
-int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
-		int transfer_len, struct devrequest *setup, int interval)
+static int submit_common_msg(ohci_t *ohci, struct usb_device *dev,
+		unsigned long pipe, void *buffer, int transfer_len,
+		struct devrequest *setup, int interval)
 {
 	int stat = 0;
 	int maxsize = usb_maxpacket(dev, pipe);
@@ -1380,15 +1518,9 @@ int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 	urb->transfer_buffer_length = transfer_len;
 	urb->interval = interval;
 
-	/* device pulled? Shortcut the action. */
-	if (devgone == dev) {
-		dev->status = USB_ST_CRC_ERR;
-		return 0;
-	}
-
 #ifdef DEBUG
 	urb->actual_length = 0;
-	pkt_print(urb, dev, pipe, buffer, transfer_len,
+	pkt_print(ohci, urb, dev, pipe, buffer, transfer_len,
 		  setup, "SUB", usb_pipein(pipe));
 #else
 	mdelay(1);
@@ -1399,14 +1531,14 @@ int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 		return -1;
 	}
 
-	if (sohci_submit_job(urb, setup) < 0) {
+	if (sohci_submit_job(ohci, &ohci->ohci_dev, urb, setup) < 0) {
 		err("sohci_submit_job failed");
 		return -1;
 	}
 
 #if 0
 	mdelay(10);
-	/* ohci_dump_status(&gohci); */
+	/* ohci_dump_status(ohci); */
 #endif
 
 	timeout = USB_TIMEOUT_MS(pipe);
@@ -1414,7 +1546,7 @@ int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 	/* wait for it to complete */
 	for (;;) {
 		/* check whether the controller is done */
-		stat = hc_interrupt();
+		stat = hc_interrupt(ohci);
 		if (stat < 0) {
 			stat = USB_ST_CRC_ERR;
 			break;
@@ -1440,7 +1572,8 @@ int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 				dbg("*");
 
 		} else {
-			err("CTL:TIMEOUT ");
+			if (!usb_pipeint(pipe))
+				err("CTL:TIMEOUT ");
 			dbg("submit_common_msg: TO status %x\n", stat);
 			urb->finished = 1;
 			stat = USB_ST_CRC_ERR;
@@ -1451,8 +1584,11 @@ int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 	dev->status = stat;
 	dev->act_len = urb->actual_length;
 
+	if (usb_pipein(pipe) && dev->status == 0 && dev->act_len)
+		invalidate_dcache_buffer(buffer, dev->act_len);
+
 #ifdef DEBUG
-	pkt_print(urb, dev, pipe, buffer, transfer_len,
+	pkt_print(ohci, urb, dev, pipe, buffer, transfer_len,
 		  setup, "RET(ctlr)", usb_pipein(pipe));
 #else
 	mdelay(1);
@@ -1469,17 +1605,27 @@ int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 		int transfer_len)
 {
 	info("submit_bulk_msg");
-	return submit_common_msg(dev, pipe, buffer, transfer_len, NULL, 0);
+	return submit_common_msg(&gohci, dev, pipe, buffer, transfer_len,
+				 NULL, 0);
 }
 
-int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
-		int transfer_len, struct devrequest *setup)
+int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+		int transfer_len, int interval)
+{
+	info("submit_int_msg");
+	return submit_common_msg(&gohci, dev, pipe, buffer, transfer_len, NULL,
+			interval);
+}
+
+static int _ohci_submit_control_msg(ohci_t *ohci, struct usb_device *dev,
+	unsigned long pipe, void *buffer, int transfer_len,
+	struct devrequest *setup)
 {
 	int maxsize = usb_maxpacket(dev, pipe);
 
 	info("submit_control_msg");
 #ifdef DEBUG
-	pkt_print(NULL, dev, pipe, buffer, transfer_len,
+	pkt_print(ohci, NULL, dev, pipe, buffer, transfer_len,
 		  setup, "SUB", usb_pipein(pipe));
 #else
 	mdelay(1);
@@ -1489,22 +1635,15 @@ int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 			pipe);
 		return -1;
 	}
-	if (((pipe >> 8) & 0x7f) == gohci.rh.devnum) {
-		gohci.rh.dev = dev;
+	if (((pipe >> 8) & 0x7f) == ohci->rh.devnum) {
+		ohci->rh.dev = dev;
 		/* root hub - redirect */
-		return ohci_submit_rh_msg(dev, pipe, buffer, transfer_len,
-			setup);
+		return ohci_submit_rh_msg(ohci, dev, pipe, buffer,
+					  transfer_len, setup);
 	}
 
-	return submit_common_msg(dev, pipe, buffer, transfer_len, setup, 0);
-}
-
-int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
-		int transfer_len, int interval)
-{
-	info("submit_int_msg");
-	return submit_common_msg(dev, pipe, buffer, transfer_len, NULL,
-			interval);
+	return submit_common_msg(ohci, dev, pipe, buffer, transfer_len,
+				 setup, 0);
 }
 
 /*-------------------------------------------------------------------------*
@@ -1648,13 +1787,14 @@ static int hc_start(ohci_t *ohci)
 
 /* an interrupt happens */
 
-static int hc_interrupt(void)
+static int hc_interrupt(ohci_t *ohci)
 {
-	ohci_t *ohci = &gohci;
 	struct ohci_regs *regs = ohci->regs;
 	int ints;
 	int stat = -1;
 
+	invalidate_dcache_hcca(ohci->hcca);
+
 	if ((ohci->hcca->done_head != 0) &&
 				!(m32_swap(ohci->hcca->done_head) & 0x01)) {
 		ints =  OHCI_INTR_WDH;
@@ -1702,7 +1842,7 @@ static int hc_interrupt(void)
 		mdelay(1);
 		ohci_writel(OHCI_INTR_WDH, &regs->intrdisable);
 		(void)ohci_readl(&regs->intrdisable); /* flush */
-		stat = dl_done_list(&gohci);
+		stat = dl_done_list(ohci);
 		ohci_writel(OHCI_INTR_WDH, &regs->intrenable);
 		(void)ohci_readl(&regs->intrdisable); /* flush */
 	}
@@ -1772,21 +1912,9 @@ int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
 		err("HCCA not aligned!!");
 		return -1;
 	}
-	phcca = &ghcca[0];
-	info("aligned ghcca %p", phcca);
-	memset(&ohci_dev, 0, sizeof(struct ohci_device));
-	if ((__u32)&ohci_dev.ed[0] & 0x7) {
-		err("EDs not aligned!!");
-		return -1;
-	}
-	memset(gtd, 0, sizeof(td_t) * (NUM_TD + 1));
-	if ((__u32)gtd & 0x7) {
-		err("TDs not aligned!!");
-		return -1;
-	}
-	ptd = gtd;
-	gohci.hcca = phcca;
-	memset(phcca, 0, sizeof(struct ohci_hcca));
+	gohci.hcca = &ghcca[0];
+	info("aligned ghcca %p", gohci.hcca);
+	memset(gohci.hcca, 0, sizeof(struct ohci_hcca));
 
 	gohci.disabled = 1;
 	gohci.sleeping = 0;
@@ -1880,3 +2008,10 @@ int usb_lowlevel_stop(int index)
 	ohci_inited = 0;
 	return 0;
 }
+
+int submit_control_msg(struct usb_device *dev, unsigned long pipe,
+	void *buffer, int transfer_len, struct devrequest *setup)
+{
+	return _ohci_submit_control_msg(&gohci, dev, pipe, buffer,
+					transfer_len, setup);
+}