Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 1055 insertions, 0 deletions

diff --git a/qemu/roms/SLOF/lib/libusb/usb-ohci.c b/qemu/roms/SLOF/lib/libusb/usb-ohci.c
new file mode 100644
index 000000000..0e8400481
--- /dev/null
+++ b/qemu/roms/SLOF/lib/libusb/usb-ohci.c
@@ -0,0 +1,1055 @@
+/*****************************************************************************
+ * Copyright (c) 2013 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ *     IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#include <string.h>
+#include <byteorder.h>
+#include "usb.h"
+#include "usb-core.h"
+#include "usb-ohci.h"
+
+#undef OHCI_DEBUG
+//#define OHCI_DEBUG
+#ifdef OHCI_DEBUG
+#define dprintf(_x ...) do { printf(_x); } while(0)
+#else
+#define dprintf(_x ...)
+#endif
+
+#undef OHCI_DEBUG_PACKET
+//#define OHCI_DEBUG_PACKET
+#ifdef OHCI_DEBUG_PACKET
+#define dpprintf(_x ...) do { printf(_x); } while(0)
+#else
+#define dpprintf(_x ...)
+#endif
+
+
+/*
+ * Dump OHCI register
+ *
+ * @param   - ohci_hcd
+ * @return  -
+ */
+static void ohci_dump_regs(struct ohci_regs *regs)
+{
+	dprintf("\n - HcRevision         %08X", read_reg32(&regs->rev));
+	dprintf("   - HcControl          %08X", read_reg32(&regs->control));
+	dprintf("\n - HcCommandStatus    %08X", read_reg32(&regs->cmd_status));
+	dprintf("   - HcInterruptStatus  %08X", read_reg32(&regs->intr_status));
+	dprintf("\n - HcInterruptEnable  %08X", read_reg32(&regs->intr_enable));
+	dprintf("   - HcInterruptDisable %08X", read_reg32(&regs->intr_disable));
+	dprintf("\n - HcHCCA             %08X", read_reg32(&regs->hcca));
+	dprintf("   - HcPeriodCurrentED  %08X", read_reg32(&regs->period_curr_ed));
+	dprintf("\n - HcControlHeadED    %08X", read_reg32(&regs->cntl_head_ed));
+	dprintf("   - HcControlCurrentED %08X", read_reg32(&regs->cntl_curr_ed));
+	dprintf("\n - HcBulkHeadED       %08X", read_reg32(&regs->bulk_head_ed));
+	dprintf("   - HcBulkCurrentED    %08X", read_reg32(&regs->bulk_curr_ed));
+	dprintf("\n - HcDoneHead         %08X", read_reg32(&regs->done_head));
+	dprintf("   - HcFmInterval       %08X", read_reg32(&regs->fm_interval));
+	dprintf("\n - HcFmRemaining      %08X", read_reg32(&regs->fm_remaining));
+	dprintf("   - HcFmNumber         %08X", read_reg32(&regs->fm_num));
+	dprintf("\n - HcPeriodicStart    %08X", read_reg32(&regs->period_start));
+	dprintf("   - HcLSThreshold      %08X", read_reg32(&regs->ls_threshold));
+	dprintf("\n - HcRhDescriptorA    %08X", read_reg32(&regs->rh_desc_a));
+	dprintf("   - HcRhDescriptorB    %08X", read_reg32(&regs->rh_desc_b));
+	dprintf("\n - HcRhStatus         %08X", read_reg32(&regs->rh_status));
+	dprintf("\n");
+}
+
+/*
+ * OHCI Spec 5.1.1
+ * OHCI Spec 7.4 Root Hub Partition
+ */
+static int ohci_hcd_reset(struct ohci_regs *regs)
+{
+	uint32_t time;
+
+	/* USBRESET - 1sec */
+	write_reg32(&regs->control, 0);
+	SLOF_msleep(100);
+
+	write_reg32(&regs->intr_disable, ~0);
+	write_reg32(&regs->cmd_status, OHCI_CMD_STATUS_HCR);
+	mb();
+
+	time = 30; /* wait for not more than 30usec */
+	while ((read_reg32(&regs->cmd_status) & OHCI_CMD_STATUS_HCR) != 0) {
+		time--;
+		if (!time) {
+			printf(" ** HCD Reset failed...");
+			return -1;
+		}
+		SLOF_usleep(1);
+	}
+	return 0;
+}
+
+static int ohci_hcd_init(struct ohci_hcd *ohcd)
+{
+	struct ohci_regs *regs;
+	struct ohci_ed *ed;
+	long ed_phys = 0;
+	unsigned int i;
+	uint32_t oldrwc;
+	struct usb_dev *rhdev = NULL;
+	struct usb_ep_descr ep;
+	uint32_t reg;
+
+	if (!ohcd)
+		return -1;
+
+	regs = ohcd->regs;
+	rhdev = &ohcd->rhdev;
+	dprintf("%s: HCCA memory %p\n", __func__, ohcd->hcca);
+	dprintf("%s: OHCI Regs   %p\n", __func__, regs);
+
+	rhdev->hcidev = ohcd->hcidev;
+	ep.bmAttributes = USB_EP_TYPE_INTR;
+	ep.wMaxPacketSize = 8;
+	rhdev->intr = usb_get_pipe(rhdev, &ep, NULL, 0);
+	if (!rhdev->intr) {
+		printf("usb-ohci: oops could not allocate intr_pipe\n");
+		return -1;
+	}
+
+	/*
+	 * OHCI Spec 4.4: Host Controller Communications Area
+	 */
+	ed = ohci_pipe_get_ed(rhdev->intr);
+	ed_phys = ohci_pipe_get_ed_phys(rhdev->intr);
+	memset(ohcd->hcca, 0, HCCA_SIZE);
+	memset(ed, 0, sizeof(struct ohci_ed));
+	ed->attr = cpu_to_le32(EDA_SKIP);
+	for (i = 0; i < HCCA_INTR_NUM; i++)
+		ohcd->hcca->intr_table[i] = cpu_to_le32(ed_phys);
+
+	write_reg32(&regs->hcca, ohcd->hcca_phys);
+	write_reg32(&regs->cntl_head_ed, 0);
+	write_reg32(&regs->bulk_head_ed, 0);
+
+	/* OHCI Spec 7.1.2 HcControl Register */
+	oldrwc = read_reg32(&regs->control) & OHCI_CTRL_RWC;
+	write_reg32(&regs->control, (OHCI_CTRL_CBSR | OHCI_CTRL_CLE |
+					OHCI_CTRL_BLE | OHCI_CTRL_PLE |
+					OHCI_USB_OPER | oldrwc));
+	SLOF_msleep(100);
+	/*
+	 * For JS20/21 need to rewrite it after setting it to
+	 * operational state
+	 */
+	write_reg32(&regs->fm_interval, FRAME_INTERVAL);
+	write_reg32(&regs->period_start, PERIODIC_START);
+	reg = read_reg32(&regs->rh_desc_a);
+	reg &= ~( RHDA_PSM_INDIVIDUAL | RHDA_OCPM_PERPORT );
+	reg |= RHDA_NPS_ENABLE;
+	write_reg32(&regs->rh_desc_a, reg);
+	write_reg32(&regs->rh_desc_b, 0);
+	mb();
+	SLOF_msleep(100);
+	ohci_dump_regs(regs);
+	return 0;
+}
+
+/*
+ * OHCI Spec 7.4 Root Hub Partition
+ */
+static void ohci_hub_check_ports(struct ohci_hcd *ohcd)
+{
+	struct ohci_regs *regs;
+	struct usb_dev *dev;
+	unsigned int ports, i, port_status, port_clear = 0;
+
+	regs = ohcd->regs;
+	ports = read_reg32(&regs->rh_desc_a) & RHDA_NDP;
+	write_reg32(&regs->rh_status, RH_STATUS_LPSC);
+	SLOF_msleep(100);
+	dprintf("usb-ohci: ports connected %d\n", ports);
+	for (i = 0; i < ports; i++) {
+		dprintf("usb-ohci: ports scanning %d\n", i);
+		port_status = read_reg32(&regs->rh_ps[i]);
+		if (port_status & RH_PS_CSC) {
+			if (port_status & RH_PS_CCS) {
+				write_reg32(&regs->rh_ps[i], RH_PS_PRS);
+				mb();
+				port_clear |= RH_PS_CSC;
+				dprintf("Start enumerating device\n");
+				SLOF_msleep(100);
+			} else
+				printf("Start removing device\n");
+		}
+		port_status = read_reg32(&regs->rh_ps[i]);
+		if (port_status & RH_PS_PRSC) {
+			port_clear |= RH_PS_PRSC;
+			dev = usb_devpool_get();
+			dprintf("usb-ohci: Device reset, setting up %p\n", dev);
+			dev->hcidev = ohcd->hcidev;
+			if (!setup_new_device(dev, i))
+				printf("usb-ohci: unable to setup device on port %d\n", i);
+		}
+		if (port_status & RH_PS_PESC) {
+			port_clear |= RH_PS_PESC;
+			if (port_status & RH_PS_PES)
+				dprintf("enabled\n");
+			else
+				dprintf("disabled\n");
+		}
+		if (port_status & RH_PS_PSSC) {
+			port_clear |= RH_PS_PESC;
+			dprintf("suspended\n");
+		}
+		port_clear &= 0xFFFF0000;
+		if (port_clear)
+			write_reg32(&regs->rh_ps[i], port_clear);
+	}
+}
+
+static inline struct ohci_ed *ohci_pipe_get_ed(struct usb_pipe *pipe)
+{
+	struct ohci_pipe *opipe;
+	opipe = container_of(pipe, struct ohci_pipe, pipe);
+	dpprintf("%s: ed is %p\n", __func__, &opipe->ed);
+	return &opipe->ed;
+}
+
+static inline long ohci_pipe_get_ed_phys(struct usb_pipe *pipe)
+{
+	struct ohci_pipe *opipe;
+	opipe = container_of(pipe, struct ohci_pipe, pipe);
+	dpprintf("%s: ed_phys is %x\n", __func__, opipe->ed_phys);
+	return opipe->ed_phys;
+}
+
+static inline struct ohci_pipe *ohci_pipe_get_opipe(struct usb_pipe *pipe)
+{
+	struct ohci_pipe *opipe;
+	opipe = container_of(pipe, struct ohci_pipe, pipe);
+	dpprintf("%s: opipe is %p\n", __func__, opipe);
+	return opipe;
+}
+
+static int ohci_alloc_pipe_pool(struct ohci_hcd *ohcd)
+{
+	struct ohci_pipe *opipe, *curr, *prev;
+	long opipe_phys = 0;
+	unsigned int i, count;
+#ifdef OHCI_DEBUG_PACKET
+	struct usb_pipe *pipe;
+#endif
+
+	dprintf("usb-ohci: %s enter\n", __func__);
+	count = OHCI_PIPE_POOL_SIZE/sizeof(*opipe);
+	ohcd->pool = opipe = SLOF_dma_alloc(OHCI_PIPE_POOL_SIZE);
+	if (!opipe)
+		return false;
+
+	ohcd->pool_phys = opipe_phys = SLOF_dma_map_in(opipe, OHCI_PIPE_POOL_SIZE, true);
+	dprintf("usb-ohci: %s opipe %x, opipe_phys %x size %d count %d\n",
+		__func__, opipe, opipe_phys, sizeof(*opipe), count);
+	/* Although an array, link them*/
+	for (i = 0, curr = opipe, prev = NULL; i < count; i++, curr++) {
+		if (prev)
+			prev->pipe.next = &curr->pipe;
+		curr->pipe.next = NULL;
+		prev = curr;
+
+		if (((uint64_t)&curr->ed) % 16)
+			printf("usb-ohci: Warning ED not aligned to 16byte boundary");
+		curr->ed_phys = opipe_phys + (curr - opipe) * sizeof(*curr) +
+			offset_of(struct ohci_pipe, ed);
+	}
+
+	if (!ohcd->freelist)
+		ohcd->freelist = &opipe->pipe;
+	else
+		ohcd->end->next = &opipe->pipe;
+	ohcd->end = &prev->pipe;
+
+#ifdef OHCI_DEBUG_PACKET
+	for (i = 0, pipe = ohcd->freelist; pipe; pipe = pipe->next)
+		dprintf("usb-ohci: %d: pipe cur %p ed %p ed_phys %x\n",
+			i++, pipe, ohci_pipe_get_ed(pipe),
+			ohci_pipe_get_ed_phys(pipe));
+#endif
+
+	dprintf("usb-ohci: %s exit\n", __func__);
+	return true;
+}
+
+static void ohci_init(struct usb_hcd_dev *hcidev)
+{
+	struct ohci_hcd *ohcd;
+
+	printf("  OHCI: initializing\n");
+	dprintf("%s: device base address %p\n", __func__, hcidev->base);
+
+	ohcd = SLOF_alloc_mem(sizeof(struct ohci_hcd));
+	if (!ohcd) {
+		printf("usb-ohci: Unable to allocate memory\n");
+		goto out;
+	}
+
+	hcidev->nextaddr = 1;
+	hcidev->priv = ohcd;
+	memset(ohcd, 0, sizeof(*ohcd));
+	ohcd->hcidev = hcidev;
+	ohcd->freelist = NULL;
+	ohcd->end = NULL;
+	ohcd->regs = (struct ohci_regs *)(hcidev->base);
+	ohcd->hcca = SLOF_dma_alloc(sizeof(struct ohci_hcca));
+	if (!ohcd->hcca || PTR_U32(ohcd->hcca) & HCCA_ALIGN) {
+		printf("usb-ohci: Unable to allocate/unaligned HCCA memory %p\n",
+			ohcd->hcca);
+		goto out_free_hcd;
+	}
+	ohcd->hcca_phys = SLOF_dma_map_in(ohcd->hcca,
+					sizeof(struct ohci_hcca), true);
+	dprintf("usb-ohci: HCCA memory %p HCCA-dev memory %08lx\n",
+		ohcd->hcca, ohcd->hcca_phys);
+
+	ohci_hcd_reset(ohcd->regs);
+	ohci_hcd_init(ohcd);
+	ohci_hub_check_ports(ohcd);
+	return;
+
+out_free_hcd:
+	SLOF_dma_free(ohcd->hcca, sizeof(struct ohci_hcca));
+	SLOF_free_mem(ohcd, sizeof(struct ohci_hcd));
+out:
+	return;
+}
+
+static void ohci_exit(struct usb_hcd_dev *hcidev)
+{
+	struct ohci_hcd *ohcd = NULL;
+
+	dprintf("%s: enter \n", __func__);
+	if (!hcidev && !hcidev->priv)
+		return;
+
+	ohcd = hcidev->priv;
+	write_reg32(&ohcd->regs->control, (OHCI_CTRL_CBSR | OHCI_USB_SUSPEND));
+	SLOF_msleep(20);
+	write_reg32(&ohcd->regs->hcca, cpu_to_le32(0));
+
+	if (ohcd->pool) {
+		SLOF_dma_map_out(ohcd->pool_phys, ohcd->pool, OHCI_PIPE_POOL_SIZE);
+		SLOF_dma_free(ohcd->pool, OHCI_PIPE_POOL_SIZE);
+	}
+	if (ohcd->hcca) {
+		SLOF_dma_map_out(ohcd->hcca_phys, ohcd->hcca, sizeof(struct ohci_hcca));
+		SLOF_dma_free(ohcd->hcca, sizeof(struct ohci_hcca));
+	}
+	SLOF_free_mem(ohcd, sizeof(struct ohci_hcd));
+	return;
+}
+
+static void ohci_detect(void)
+{
+
+}
+
+static void ohci_disconnect(void)
+{
+
+}
+
+#define OHCI_CTRL_TDS 3
+
+static void ohci_fill_td(struct ohci_td *td, long next,
+			long req, size_t size, unsigned int attr)
+{
+	if (size && req) {
+		td->cbp = cpu_to_le32(req);
+		td->be = cpu_to_le32(req + size - 1);
+	} else {
+		td->cbp = 0;
+		td->be = 0;
+	}
+	td->attr = cpu_to_le32(attr);
+	td->next_td = cpu_to_le32(next);
+
+	dpprintf("%s: cbp %08X attr %08X next_td %08X be %08X\n", __func__,
+		le32_to_cpu(td->cbp), le32_to_cpu(td->attr),
+		le32_to_cpu(td->next_td), le32_to_cpu(td->be));
+}
+
+static void ohci_fill_ed(struct ohci_ed *ed, long headp, long tailp,
+			unsigned int attr, long next_ed)
+{
+	ed->attr = cpu_to_le32(attr);
+	ed->headp = cpu_to_le32(headp) | (ed->headp & ~EDA_HEADP_MASK_LE);
+	ed->tailp = cpu_to_le32(tailp);
+	ed->next_ed = cpu_to_le32(next_ed);
+	dpprintf("%s: headp %08X tailp %08X next_td %08X attr %08X\n", __func__,
+		le32_to_cpu(ed->headp), le32_to_cpu(ed->tailp),
+		le32_to_cpu(ed->next_ed), le32_to_cpu(ed->attr));
+
+}
+
+static long ohci_get_td_phys(struct ohci_td *curr, struct ohci_td *start, long td_phys)
+{
+	dpprintf("position %d\n", curr - start);
+	return td_phys + (curr - start) * sizeof(*start);
+}
+
+static long ohci_get_td_virt(struct ohci_td *curr, struct ohci_td *start, long td_virt, long total_count)
+{
+	dpprintf("position %d\n", curr - start);
+	if ( (curr - start) >= total_count) {
+		/* busted position, should ignore this */
+		return 0;
+	}
+	return td_virt + (curr - start) * sizeof(*start);
+}
+
+/* OHCI Spec: 4.4.2.3 HccaDoneHead*/
+static int ohci_process_done_head(struct ohci_hcd *ohcd,
+				struct ohci_td *td_start,
+				long __td_start_phys, long total_count)
+{
+	struct ohci_hcca *hcca;
+	struct ohci_td *td_phys = NULL, *td_start_phys;
+	struct ohci_td *td, *prev_td = NULL;
+	uint32_t reg = 0, time = 0;
+	int ret = true;
+	long count;
+
+	count = total_count;
+	td_start_phys = (struct ohci_td *) __td_start_phys;
+	hcca = ohcd->hcca;
+	time = SLOF_GetTimer() + USB_TIMEOUT;
+	dpprintf("Claiming %ld\n", count);
+
+again:
+	mb();
+	/* Check if there is an interrupt */
+	reg = read_reg32(&ohcd->regs->intr_status);
+	while(!(reg & OHCI_INTR_STATUS_WD))
+	{
+		if (time < SLOF_GetTimer()) {
+			printf("Timed out waiting for interrupt %x\n", reg);
+			return false;
+		}
+		mb();
+		reg = read_reg32(&ohcd->regs->intr_status);
+	}
+
+	/* Interrupt is there, read from done_head pointer */
+	td_phys = (struct ohci_td *)(uint64_t) le32_to_cpu(hcca->done_head);
+	if (!td_phys) {
+		dprintf("Again td_phys null %ld\n");
+		goto again;
+	}
+	hcca->done_head = 0;
+	mb();
+
+	while (td_phys && (count > 0)) {
+		td = (struct ohci_td *)(uint64_t) ohci_get_td_virt(td_phys,
+								td_start_phys,
+								PTR_U32(td_start),
+								total_count);
+
+		if (!td) {
+			printf("USB: Error TD null %p\n", td_phys);
+			break;
+		}
+		count--;
+		dprintf("Claimed %p(%p) td_start %p count %ld\n",
+			td, td_phys, td_start_phys, count);
+		dpprintf("%s: cbp %08X attr %08X next_td %08X be %08X\n",
+			__func__,
+			le32_to_cpu(td->cbp), le32_to_cpu(td->attr),
+			le32_to_cpu(td->next_td), le32_to_cpu(td->be));
+		mb();
+		reg = (le32_to_cpu(td->attr) & TDA_CC) >> 28;
+		if (reg) {
+			dprintf("%s: cbp %08X attr %08X next_td %08X be %08X\n",
+				__func__,
+				le32_to_cpu(td->cbp), le32_to_cpu(td->attr),
+				le32_to_cpu(td->next_td), le32_to_cpu(td->be));
+			printf("USB: Error %s %p\n", tda_cc_error[reg], td);
+			if (reg > 3) /* Return negative error code */
+				ret = reg * -1;
+		}
+		prev_td = td;
+		td_phys = (struct ohci_td *)(uint64_t) le32_to_cpu(td->next_td);
+		prev_td->attr |= cpu_to_le32(TDA_DONE);
+		prev_td->next_td = 0;
+		mb();
+	}
+	/* clear the WD interrupt status */
+	write_reg32(&ohcd->regs->intr_status, OHCI_INTR_STATUS_WD);
+	mb();
+	read_reg32(&ohcd->regs->intr_status);
+
+	if (count > 0) {
+		dpprintf("Pending count %d\n", count);
+		goto again;
+	}
+	dprintf("TD claims done\n");
+	return ret;
+}
+
+/*
+ * OHCI Spec:
+ *           4.2 Endpoint Descriptor
+ *           4.3.1 General Transfer Descriptor
+ *           5.2.8 Transfer Descriptor Queues
+ */
+static int ohci_send_ctrl(struct usb_pipe *pipe, struct usb_dev_req *req, void *data)
+{
+	struct ohci_ed *ed;
+	struct ohci_td *tds, *td, *td_phys;
+	struct ohci_regs *regs;
+	struct ohci_hcd *ohcd;
+	uint32_t datalen;
+	uint32_t dir, attr = 0;
+	uint32_t time;
+	int ret = true, i;
+	long req_phys = 0, data_phys = 0, td_next = 0, td_count = 0;
+	unsigned char *dbuf;
+
+	datalen = le16_to_cpu(req->wLength);
+	dir = (req->bmRequestType & REQT_DIR_IN) ? 1 : 0;
+
+	dprintf("usb-ohci: %s len %d DIR_IN %d\n", __func__, datalen, dir);
+
+	tds = td = (struct ohci_td *) SLOF_dma_alloc(sizeof(*td) * OHCI_CTRL_TDS);
+	td_phys = (struct ohci_td *) SLOF_dma_map_in(td, sizeof(*td) * OHCI_CTRL_TDS, true);
+	memset(td, 0, sizeof(*td) * OHCI_CTRL_TDS);
+
+	req_phys = SLOF_dma_map_in(req, sizeof(struct usb_dev_req), true);
+	attr = TDA_DP_SETUP | TDA_CC | TDA_TOGGLE_DATA0;
+	td_next = ohci_get_td_phys(td + 1, tds, PTR_U32(td_phys));
+	ohci_fill_td(td, td_next, req_phys, sizeof(*req), attr);
+	td++; td_count++;
+
+	if (datalen) {
+		data_phys = SLOF_dma_map_in(data, datalen, true);
+		attr = 0;
+		attr = (dir ? TDA_DP_IN : TDA_DP_OUT) | TDA_TOGGLE_DATA1 | TDA_CC;
+		td_next = ohci_get_td_phys(td + 1, tds, PTR_U32(td_phys));
+		ohci_fill_td(td, td_next, data_phys, datalen, attr);
+		td++; td_count++;
+	}
+
+	attr = 0;
+	attr = (dir ? TDA_DP_OUT : TDA_DP_IN) | TDA_CC | TDA_TOGGLE_DATA1;
+	td_next = ohci_get_td_phys(td + 1, tds, PTR_U32(td_phys));
+	ohci_fill_td(td, 0, 0, 0, attr);
+	td_count++;
+
+	ed = ohci_pipe_get_ed(pipe);
+	attr = 0;
+	attr = EDA_FADDR(pipe->dev->addr) | EDA_MPS(pipe->mps) | EDA_SKIP;
+	ohci_fill_ed(ed, PTR_U32(td_phys), td_next, attr, 0);
+	ed->tailp = 0; /* HACK */
+	dprintf("usb-ohci: %s - td_start %x td_end %x req %x\n", __func__,
+		td_phys, td_next, req_phys);
+	mb();
+	ed->attr &= cpu_to_le32(~EDA_SKIP);
+
+	ohcd = pipe->dev->hcidev->priv;
+	regs = ohcd->regs;
+	write_reg32(&regs->cntl_head_ed, ohci_pipe_get_ed_phys(pipe));
+	mb();
+	write_reg32(&regs->cmd_status, OHCI_CMD_STATUS_CLF);
+
+	time = SLOF_GetTimer() + USB_TIMEOUT;
+	while ((time > SLOF_GetTimer()) &&
+		((ed->headp & EDA_HEADP_MASK_LE) != ed->tailp))
+		cpu_relax();
+
+	if ((ed->headp & EDA_HEADP_MASK_LE) == ed->tailp) {
+		dprintf("%s: packet sent\n", __func__);
+#ifdef OHCI_DEBUG_PACKET
+		dpprintf("Request: ");
+		dbuf = (unsigned char *)req;
+		for(i = 0; i < 8; i++)
+			printf("%02X ", dbuf[i]);
+		dpprintf("\n");
+		if (datalen) {
+			dbuf = (unsigned char *)data;
+			dpprintf("Reply:   ");
+			for(i = 0; i < datalen; i++)
+				printf("%02X ", dbuf[i]);
+			dpprintf("\n");
+		}
+#endif
+	}
+	else {
+		printf("%s: timed out - failed\n", __func__);
+		dpprintf("%s: headp %08X tailp %08X next_td %08X attr %08X\n",
+			__func__,
+			le32_to_cpu(ed->headp), le32_to_cpu(ed->tailp),
+			le32_to_cpu(ed->next_ed), le32_to_cpu(ed->attr));
+		printf("Request: ");
+		dbuf = (unsigned char *)req;
+		for(i = 0; i < 8; i++)
+			printf("%02X ", dbuf[i]);
+		printf("\n");
+	}
+	ret = ohci_process_done_head(ohcd, tds, (long)td_phys, td_count);
+	mb();
+	ed->attr |= cpu_to_le32(EDA_SKIP);
+	mb();
+	write_reg32(&regs->cntl_head_ed, 0);
+	write_reg32(&regs->cntl_curr_ed, 0);
+
+	SLOF_dma_map_out(req_phys, req, sizeof(struct usb_dev_req));
+	if (datalen)
+		SLOF_dma_map_out(data_phys, data, datalen);
+	SLOF_dma_map_out(PTR_U32(td_phys), tds, sizeof(*td) * OHCI_CTRL_TDS);
+	SLOF_dma_free(tds, sizeof(*td) * OHCI_CTRL_TDS);
+	return (ret > 0) ? true : false;
+}
+
+static int ohci_transfer_bulk(struct usb_pipe *pipe, void *td_ptr,
+			void *td_phys_ptr, void *data_phys, int datalen)
+{
+	struct ohci_ed *ed;
+	struct ohci_td *td, *tds;
+	struct ohci_regs *regs;
+	struct ohci_hcd *ohcd;
+	long td_phys = 0, td_next, ed_phys, ptr, td_count = 0;
+	uint32_t dir, attr = 0, count;
+	size_t len, packet_len;
+	uint32_t time;
+	int ret = true;
+
+	if (pipe->type != USB_EP_TYPE_BULK) {
+		printf("usb-ohci: Not a bulk pipe.\n");
+		ret = false;
+		goto end;
+	}
+
+	dir = (pipe->dir == USB_PIPE_OUT) ? 0 : 1;
+	count = datalen / OHCI_MAX_BULK_SIZE;
+	if (count > OHCI_MAX_TDS) {
+		printf("usb-ohci: buffer size not supported - %d\n", datalen);
+		ret = false;
+		goto end;
+	}
+
+	td = tds = (struct ohci_td *) td_ptr;
+	td_phys = (long)td_phys_ptr;
+	dprintf("usb-ohci: %s pipe %p data_phys %p len %d DIR_IN %d td %p td_phys %p\n",
+		__func__, pipe, data_phys, datalen, dir, td, td_phys);
+
+	if (!tds) {
+		printf("%s: tds NULL recieved\n", __func__);
+		ret = false;
+		goto end;
+	}
+	memset(td, 0, sizeof(*td) * OHCI_MAX_TDS);
+
+	len = datalen;
+	ptr = (long)data_phys;
+	attr = 0;
+	attr = (dir ? TDA_DP_IN : TDA_DP_OUT) | TDA_CC | TDA_ROUNDING;
+	while (len) {
+		packet_len = (OHCI_MAX_BULK_SIZE < len)? OHCI_MAX_BULK_SIZE : len;
+		td_next = ohci_get_td_phys((td + 1), tds, td_phys);
+		ohci_fill_td(td, td_next, ptr, packet_len, attr);
+		ptr = ptr + packet_len;
+		len = len - packet_len;
+		td++; td_count++;
+	}
+
+	ed = ohci_pipe_get_ed(pipe);
+	attr = 0;
+	dir = pipe->dir ? EDA_DIR_IN : EDA_DIR_OUT;
+	attr = dir | EDA_FADDR(pipe->dev->addr) | EDA_MPS(pipe->mps)
+		| EDA_SKIP | pipe->dev->speed | EDA_EP(pipe->epno);
+	td_next = ohci_get_td_phys(td, tds, td_phys);
+	ohci_fill_ed(ed, td_phys, td_next, attr, 0);
+	dprintf("usb-ohci: %s - tds %p td %p\n", __func__, td_phys, td_next);
+	mb();
+	ed->attr &= cpu_to_le32(~EDA_SKIP);
+
+	ohcd = pipe->dev->hcidev->priv;
+	regs = ohcd->regs;
+	ed_phys = ohci_pipe_get_ed_phys(pipe);
+	write_reg32(&regs->bulk_head_ed, ed_phys);
+	mb();
+	write_reg32(&regs->cmd_status, 0x4);
+
+	time = SLOF_GetTimer() + USB_TIMEOUT;
+	while ((time > SLOF_GetTimer()) &&
+		((ed->headp & EDA_HEADP_MASK_LE) != ed->tailp))
+		cpu_relax();
+
+	if ((ed->headp & EDA_HEADP_MASK_LE) == ed->tailp)
+		dprintf("%s: packet sent\n", __func__);
+	else {
+		dpprintf("%s: headp %08X tailp %08X next_td %08X attr %08X\n", __func__,
+			 le32_to_cpu(ed->headp), le32_to_cpu(ed->tailp),
+			 le32_to_cpu(ed->next_ed), le32_to_cpu(ed->attr));
+	}
+	mb();
+	ret = ohci_process_done_head(ohcd, tds, td_phys, td_count);
+	mb();
+	ed->attr |= cpu_to_le32(EDA_SKIP);
+	mb();
+	write_reg32(&regs->bulk_head_ed, 0);
+	write_reg32(&regs->bulk_curr_ed, 0);
+
+	if (le32_to_cpu(ed->headp) & EDA_HEADP_HALTED) {
+		printf("ED Halted\n");
+		printf("%s: headp %08X tailp %08X next_td %08X attr %08X\n", __func__,
+			le32_to_cpu(ed->headp), le32_to_cpu(ed->tailp),
+			le32_to_cpu(ed->next_ed), le32_to_cpu(ed->attr));
+		ed->headp &= ~cpu_to_le32(EDA_HEADP_HALTED);
+		mb();
+		if (ret == USB_STALL) /* Call reset recovery */
+			usb_msc_resetrecovery(pipe->dev);
+	}
+
+end:
+	return (ret > 0) ? true : false;
+}
+
+/* Populate the hcca intr region with periodic intr */
+static int ohci_get_pipe_intr(struct usb_pipe *pipe, struct ohci_hcd *ohcd,
+			char *buf, size_t buflen)
+{
+	struct ohci_hcca *hcca;
+	struct ohci_pipe *opipe;
+	struct ohci_ed *ed;
+	struct usb_dev *dev;
+	struct ohci_td *tds, *td;
+	int32_t count = 0, i;
+	uint8_t *ptr;
+	uint16_t mps;
+	long ed_phys, td_phys, td_next, buf_phys;
+
+	if (!pipe || !ohcd)
+		return false;
+
+	hcca = ohcd->hcca;
+	dev = pipe->dev;
+	if (dev->class != DEV_HID_KEYB && dev->class != DEV_HUB)
+		return false;
+
+	opipe = ohci_pipe_get_opipe(pipe);
+	ed = &(opipe->ed);
+	ed_phys = opipe->ed_phys;
+	mps = pipe->mps;
+	ed->attr = cpu_to_le32(EDA_DIR_IN |
+			       EDA_FADDR(dev->addr) |
+			       dev->speed |
+			       EDA_MPS(pipe->mps) |
+			       EDA_SKIP |
+			       EDA_EP(pipe->epno));
+	dprintf("%s: pipe %p ed %p dev %p opipe %p\n", __func__,
+		pipe, ed, dev, opipe);
+	count = (buflen/mps) + 1;
+	tds = td = SLOF_dma_alloc(sizeof(*td) * count);
+	if (!tds) {
+		printf("%s: alloc failed\n", __func__);
+		return false;
+	}
+	td_phys = SLOF_dma_map_in(td, sizeof(*td) * count, false);
+
+	memset(tds, 0, sizeof(*tds) * count);
+	memset(buf, 0, buflen);
+	buf_phys = SLOF_dma_map_in(buf, buflen, false);
+	opipe->td = td;
+	opipe->td_phys = td_phys;
+	opipe->count = count;
+	opipe->buf = buf;
+	opipe->buflen = buflen;
+	opipe->buf_phys = buf_phys;
+
+	ptr = (uint8_t *)buf_phys;
+	for (i = 0; i < count - 1; i++, ptr += mps) {
+		td = &tds[i];
+		td_next = ohci_get_td_phys(td + 1, &tds[0], td_phys);
+		td->cbp = cpu_to_le32(PTR_U32(ptr));
+		td->attr = cpu_to_le32(TDA_DP_IN | TDA_ROUNDING | TDA_CC);
+		td->next_td = cpu_to_le32(td_next);
+		td->be = cpu_to_le32(PTR_U32(ptr) + mps - 1);
+		dprintf("td %x td++ %x ptr %x be %x\n",
+			td, le32_to_cpu(td->next_td),
+			ptr, (PTR_U32(ptr) + mps - 1));
+	}
+	td->next_td = 0;
+	td_next = ohci_get_td_phys(td, &tds[0], td_phys);
+	ed->headp = cpu_to_le32(td_phys);
+	ed->tailp = cpu_to_le32(td_next);
+
+	dprintf("%s: head %08X tail %08X, count %d, mps %d\n", __func__,
+		le32_to_cpu(ed->headp),
+		le32_to_cpu(ed->tailp),
+		count, mps);
+	ed->next_ed = 0;
+
+
+	switch (dev->class) {
+	case DEV_HID_KEYB:
+		dprintf("%s: Keyboard class %d\n", __func__, dev->class);
+		hcca->intr_table[0] = cpu_to_le32(ed_phys);
+		hcca->intr_table[8] = cpu_to_le32(ed_phys);
+		hcca->intr_table[16] = cpu_to_le32(ed_phys);
+		hcca->intr_table[24] = cpu_to_le32(ed_phys);
+		ed->attr &= cpu_to_le32(~EDA_SKIP);
+		break;
+
+	case DEV_HUB:
+		dprintf("%s: HUB class %x\n", __func__, dev->class);
+		hcca->intr_table[1] = cpu_to_le32(ed_phys);
+		ed->attr &= cpu_to_le32(~EDA_SKIP);
+		break;
+
+	default:
+		dprintf("%s: unhandled class %d\n", __func__, dev->class);
+	}
+	return true;
+}
+
+static int ohci_put_pipe_intr(struct usb_pipe *pipe, struct ohci_hcd *ohcd)
+{
+	struct ohci_hcca *hcca;
+	struct ohci_pipe *opipe;
+	struct ohci_ed *ed;
+	struct usb_dev *dev;
+	struct ohci_td *td;
+	long ed_phys;
+
+	if (!pipe || !ohcd)
+		return false;
+
+	hcca = ohcd->hcca;
+	dev = pipe->dev;
+
+	if (dev->class != DEV_HID_KEYB && dev->class != DEV_HUB)
+		return false;
+
+	opipe = ohci_pipe_get_opipe(pipe);
+	ed = &(opipe->ed);
+	ed_phys = opipe->ed_phys;
+	dprintf("%s: td %p td_phys %08lx buf %p buf_phys %08lx\n", __func__,
+		opipe->td, opipe->td_phys, opipe->buf, opipe->buf_phys);
+
+	ed->attr |= cpu_to_le32(EDA_SKIP);
+	mb();
+	ed->headp = 0;
+	ed->tailp = 0;
+	ed->next_ed = 0;
+	SLOF_dma_map_out(opipe->buf_phys, opipe->buf, opipe->buflen);
+	SLOF_dma_map_out(opipe->td_phys, opipe->td, sizeof(*td) * opipe->count);
+	SLOF_dma_free(opipe->td, sizeof(*td) * opipe->count);
+
+	switch (dev->class) {
+	case DEV_HID_KEYB:
+		dprintf("%s: Keyboard class %d\n", __func__, dev->class);
+		hcca->intr_table[0] = cpu_to_le32(ed_phys);
+		hcca->intr_table[8] = cpu_to_le32(ed_phys);
+		hcca->intr_table[16] = cpu_to_le32(ed_phys);
+		hcca->intr_table[24] = cpu_to_le32(ed_phys);
+		break;
+
+	case DEV_HUB:
+		dprintf("%s: HUB class %d\n", __func__, dev->class);
+		hcca->intr_table[1] = cpu_to_le32(ed_phys);
+		break;
+
+	default:
+		dprintf("%s: unhandled class %d\n", __func__, dev->class);
+	}
+	return true;
+}
+
+static int ohci_init_bulk_ed(struct usb_dev *dev, struct usb_pipe *pipe)
+{
+	struct ohci_pipe *opipe;
+	struct ohci_ed *ed;
+	uint32_t dir;
+
+	if (!pipe || !dev)
+		return false;
+
+	opipe = ohci_pipe_get_opipe(pipe);
+	ed = &(opipe->ed);
+	dir = pipe->dir ? EDA_DIR_IN : EDA_DIR_OUT;
+
+	ed->attr = cpu_to_le32(dir |
+			       EDA_FADDR(dev->addr) |
+			       dev->speed |
+			       EDA_MPS(pipe->mps) |
+			       EDA_SKIP |
+			       EDA_EP(pipe->epno));
+
+	dprintf("%s: pipe %p attr %x\n", __func__, pipe,
+		le32_to_cpu(ed->attr));
+	return true;
+}
+
+static struct usb_pipe *ohci_get_pipe(struct usb_dev *dev, struct usb_ep_descr *ep,
+				char *buf, size_t buflen)
+{
+	struct ohci_hcd *ohcd;
+	struct usb_pipe *new = NULL;
+
+	dprintf("usb-ohci: %s enter %p\n", __func__, dev);
+	if (!dev)
+		return NULL;
+
+	ohcd = (struct ohci_hcd *)dev->hcidev->priv;
+	if (!ohcd->freelist) {
+		dprintf("usb-ohci: %s allocating pool\n", __func__);
+		if (!ohci_alloc_pipe_pool(ohcd))
+			return NULL;
+	}
+
+	new = ohcd->freelist;
+	ohcd->freelist = ohcd->freelist->next;
+	if (!ohcd->freelist)
+		ohcd->end = NULL;
+
+	memset(new, 0, sizeof(*new));
+	new->dev = dev;
+	new->next = NULL;
+	new->type = ep->bmAttributes & USB_EP_TYPE_MASK;
+	new->speed = dev->speed;
+	new->mps = le16_to_cpu(ep->wMaxPacketSize);
+	new->epno = ep->bEndpointAddress & 0xF;
+	new->dir = ep->bEndpointAddress & 0x80;
+	if (new->type == USB_EP_TYPE_INTR)
+		if (!ohci_get_pipe_intr(new, ohcd, buf, buflen))
+			dprintf("usb-ohci: %s alloc_intr failed  %p\n",
+				__func__, new);
+	if (new->type == USB_EP_TYPE_BULK)
+		ohci_init_bulk_ed(dev, new);
+
+	dprintf("usb-ohci: %s exit %p\n", __func__, new);
+	return new;
+}
+
+static void ohci_put_pipe(struct usb_pipe *pipe)
+{
+	struct ohci_hcd *ohcd;
+
+	dprintf("usb-ohci: %s enter - %p\n", __func__, pipe);
+	if (!pipe || !pipe->dev)
+		return;
+	ohcd = pipe->dev->hcidev->priv;
+	if (ohcd->end)
+		ohcd->end->next = pipe;
+	else
+		ohcd->freelist = pipe;
+
+	if (pipe->type == USB_EP_TYPE_INTR)
+		if (!ohci_put_pipe_intr(pipe, ohcd))
+			dprintf("usb-ohci: %s alloc_intr failed  %p\n",
+				__func__, pipe);
+
+	ohcd->end = pipe;
+	pipe->next = NULL;
+	pipe->dev = NULL;
+	memset(pipe, 0, sizeof(*pipe));
+	dprintf("usb-ohci: %s exit\n", __func__);
+}
+
+static uint16_t ohci_get_last_frame(struct usb_dev *dev)
+{
+	struct ohci_hcd *ohcd;
+	struct ohci_regs *regs;
+
+	ohcd = dev->hcidev->priv;
+	regs = ohcd->regs;
+	return read_reg32(&regs->fm_num);
+}
+
+static int ohci_poll_intr(struct usb_pipe *pipe, uint8_t *data)
+{
+	struct ohci_pipe *opipe;
+	struct ohci_ed *ed;
+	struct ohci_td *head, *tail, *curr, *next;
+	struct ohci_td *head_phys, *tail_phys, *curr_phys;
+	uint8_t *ptr = NULL;
+	unsigned int i, pos;
+	static uint16_t last_frame;
+	long ptr_phys = 0;
+	long td_next;
+
+	if (!pipe || last_frame == ohci_get_last_frame(pipe->dev))
+		return 0;
+
+	dprintf("%s: enter\n", __func__);
+
+	last_frame = ohci_get_last_frame(pipe->dev);
+	opipe = ohci_pipe_get_opipe(pipe);
+	ed = &opipe->ed;
+
+	head_phys = (struct ohci_td *)(long)(le32_to_cpu(ed->headp) & EDA_HEADP_MASK);
+	tail_phys = (struct ohci_td *)(long)le32_to_cpu(ed->tailp);
+	curr_phys = (struct ohci_td *) opipe->td_phys;
+	pos = (tail_phys - curr_phys + 1) % (opipe->count - 1);
+	dprintf("pos %d %ld -- %d\n", pos, (tail_phys - curr_phys + 1),
+		opipe->count);
+	curr = opipe->td + pos;
+	head = opipe->td + (head_phys - (struct ohci_td *) opipe->td_phys);
+	tail = opipe->td + (tail_phys - (struct ohci_td *) opipe->td_phys);
+
+	/* dprintf("%08X %08X %08X %08X\n",
+	   opipe->td_phys, head_phys, tail_phys, curr_phys);
+	   dprintf("%08X %08X %08X %08X\n", opipe->td, head, tail, curr); */
+
+	if (curr != head) {
+		ptr = (uint8_t *) ((long)opipe->buf + pipe->mps * pos);
+		ptr_phys = opipe->buf_phys + pipe->mps * pos;
+		if (le32_to_cpu(*(uint32_t *)ptr) != 0) {
+			for (i = 0; i < 8; i++)
+				data[i] = *(ptr + i);
+		}
+
+		next = curr + 1;
+		if (next == (opipe->td + opipe->count - 1))
+			next = opipe->td;
+
+		curr->attr = cpu_to_le32(TDA_DP_IN | TDA_ROUNDING | TDA_CC);
+		curr->next_td = cpu_to_le32(0);
+		curr->cbp = cpu_to_le32(PTR_U32(ptr_phys));
+		curr->be = cpu_to_le32(PTR_U32(ptr_phys + pipe->mps - 1));
+		td_next = ohci_get_td_phys(curr, opipe->td, opipe->td_phys);
+		dprintf("Connecting %p to %p(phys %08lx) ptr %p, "
+			"ptr_phys %08lx\n", tail, curr, td_next, ptr, ptr_phys);
+		tail->next_td = cpu_to_le32(td_next);
+		mb();
+		ed->tailp = cpu_to_le32(td_next);
+	} else
+		return 0;
+
+	dprintf("%s: exit\n", __func__);
+	return 1;
+}
+
+struct usb_hcd_ops ohci_ops = {
+	.name        = "ohci-hcd",
+	.init        = ohci_init,
+	.exit        = ohci_exit,
+	.detect      = ohci_detect,
+	.disconnect  = ohci_disconnect,
+	.get_pipe    = ohci_get_pipe,
+	.put_pipe    = ohci_put_pipe,
+	.send_ctrl   = ohci_send_ctrl,
+	.transfer_bulk = ohci_transfer_bulk,
+	.poll_intr   = ohci_poll_intr,
+	.usb_type    = USB_OHCI,
+	.next        = NULL,
+};
+
+void usb_ohci_register(void)
+{
+	usb_hcd_register(&ohci_ops);
+}