[PATCH 11/11] [RFC USB POWERPC] Freescale QUICC Engine USB Host Controller
Anton Vorontsov
avorontsov at ru.mvista.com
Mon Feb 4 04:11:21 EST 2008
Signed-off-by: Anton Vorontsov <avorontsov at ru.mvista.com>
---
Hi all,
This is RFC for the "FHCI" USB host controller driver.
My TODO list:
1. Locking completely braindead, needs fixing. I just inserted
plain spin_lock()s to outline what I'm going to do. _irq and
_irqsave variants will be inserted appropriately.
2. Try to get rid of -cq part of the driver and use kfifo instead;
3. Probably fix Packet-Level interface support. It was and is
broken. I didn't include fhci-bds.c file in this RFC, today it's
not worth looking, and weights about 60Kb additionally;
4. Make sparse happy.
Will appreciate any comments,
Thanks,
drivers/usb/Makefile | 1 +
drivers/usb/host/Kconfig | 36 +
drivers/usb/host/Makefile | 2 +-
drivers/usb/host/fhci-bds.c | 1696 +++++++++++++++++++++++++++++++++++++++++++
drivers/usb/host/fhci-cq.c | 105 +++
drivers/usb/host/fhci-dbg.c | 133 ++++
drivers/usb/host/fhci-hcd.c | 1391 +++++++++++++++++++++++++++++++++++
drivers/usb/host/fhci-hub.c | 343 +++++++++
drivers/usb/host/fhci-mem.c | 95 +++
drivers/usb/host/fhci-q.c | 495 +++++++++++++
drivers/usb/host/fhci-tds.c | 628 ++++++++++++++++
drivers/usb/host/fhci.h | 543 ++++++++++++++
12 files changed, 5467 insertions(+), 1 deletions(-)
create mode 100644 drivers/usb/host/fhci-bds.c
create mode 100644 drivers/usb/host/fhci-cq.c
create mode 100644 drivers/usb/host/fhci-dbg.c
create mode 100644 drivers/usb/host/fhci-hcd.c
create mode 100644 drivers/usb/host/fhci-hub.c
create mode 100644 drivers/usb/host/fhci-mem.c
create mode 100644 drivers/usb/host/fhci-q.c
create mode 100644 drivers/usb/host/fhci-tds.c
create mode 100644 drivers/usb/host/fhci.h
diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile
index 516a640..e0f71af 100644
--- a/drivers/usb/Makefile
+++ b/drivers/usb/Makefile
@@ -16,6 +16,7 @@ obj-$(CONFIG_USB_UHCI_HCD) += host/
obj-$(CONFIG_USB_SL811_HCD) += host/
obj-$(CONFIG_USB_U132_HCD) += host/
obj-$(CONFIG_USB_R8A66597_HCD) += host/
+obj-$(CONFIG_USB_FHCI_HCD) += host/
obj-$(CONFIG_USB_ACM) += class/
obj-$(CONFIG_USB_PRINTER) += class/
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 49a91c5..6b1d408 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -261,3 +261,39 @@ config USB_R8A66597_HCD
To compile this driver as a module, choose M here: the
module will be called r8a66597-hcd.
+config USB_FHCI_HCD
+ tristate "Freescale QE USB Host Controller support"
+ depends on USB && GENERIC_GPIO
+ select QE_GTM
+ help
+ Some Freescale PowerPC processors (such as MPC8360E and
+ MPC8323) have a Full Speed or Low Speed QE USB Host controller.
+
+ Say "y" to enable support for such controllers, or "m" to compile
+ it as a module: the module will be called fhci-hcd.ko
+
+config FHCI_DEBUG
+ bool "Freescale QE USB Host Controller debug support"
+ depends on USB_FHCI_HCD
+ select DEBUG_FS
+ help
+ Say "y" to see some FHCI debug information and statistics
+ throught debugfs.
+
+choice
+ prompt "FHCI interface type"
+ depends on USB_FHCI_HCD
+ default FHCI_WITH_TDS
+
+config FHCI_WITH_BDS
+ bool "Packet-Level interface (BDs)"
+ depends on BROKEN
+ help
+ Controller uses a packet-level interface to communicate.
+
+config FHCI_WITH_TDS
+ bool "Transaction-Level interface (TDs)"
+ help
+ Controller uses a transaction-level interface to communicate.
+
+endchoice
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index bb8e9d4..4282205 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -16,4 +16,4 @@ obj-$(CONFIG_USB_SL811_HCD) += sl811-hcd.o
obj-$(CONFIG_USB_SL811_CS) += sl811_cs.o
obj-$(CONFIG_USB_U132_HCD) += u132-hcd.o
obj-$(CONFIG_USB_R8A66597_HCD) += r8a66597-hcd.o
-
+obj-$(CONFIG_USB_FHCI_HCD) += fhci-hcd.o
diff --git a/drivers/usb/host/fhci-cq.c b/drivers/usb/host/fhci-cq.c
new file mode 100644
index 0000000..299704a
--- /dev/null
+++ b/drivers/usb/host/fhci-cq.c
@@ -0,0 +1,105 @@
+/*
+ * Freescale QUICC Engine USB Host Controller Driver
+ *
+ * Copyright (c) Freescale Semicondutor, Inc. 2006.
+ * Shlomi Gridish <gridish at freescale.com>
+ * Jerry Huang <Chang-Ming.Huang at freescale.com>
+ * Copyright (c) Logic Product Development, Inc. 2007
+ * Peter Barada <peterb at logicpd.com>
+ * Copyright (c) MontaVista Software, Inc. 2008.
+ * Anton Vorontsov <avorontsov at ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+/* circular queue structure */
+struct cir_q {
+ int max; /* size of queue */
+ int max_in; /* max items in queue */
+ int first; /* index of first in queue */
+ int last; /* index after last in queue */
+ int read; /* current reading position */
+ void *table[1]; /* fake size */
+};
+
+/* circular queue handle */
+static int cq_howmany(struct cir_q *cq)
+{
+ int l = cq->last;
+ int f = cq->first;
+
+ return l >= f ? l - f : l + cq->max - f;
+}
+
+static struct cir_q *cq_new(int size)
+{
+ struct cir_q *cq;
+
+ cq = kzalloc((sizeof(*cq) + size * sizeof(void *)), GFP_KERNEL);
+ if (cq) {
+ cq->max = size;
+ cq->first = 0;
+ cq->last = 0;
+ cq->read = 0;
+ cq->max_in = 0;
+ }
+
+ return cq;
+}
+
+static void cq_delete(struct cir_q *cq)
+{
+ kfree(cq);
+}
+
+static int cq_put(struct cir_q *cq, void *p)
+{
+ int n;
+ int k;
+
+ /* see if we can freely advance the last pointer */
+ n = cq->last;
+ k = cq_howmany(cq);
+ if ((k + 1) >= cq->max)
+ return -1;
+
+ if (++n >= cq->max)
+ n = 0;
+
+ /* add element to queue */
+ cq->table[cq->last] = p;
+ cq->last = n;
+ if ((k + 1) > cq->max_in)
+ cq->max_in = k + 1;
+
+ return k;
+}
+
+static void *cq_get(struct cir_q *cq)
+{
+ int n;
+ int k;
+ void *p;
+
+ n = cq->first;
+ /* see if the queue is not empty */
+ if (n == cq->last)
+ return 0;
+
+ p = cq->table[n];
+ if (++n >= cq->max)
+ n = 0;
+ if (cq->read == cq->first)
+ cq->read = n;
+ cq->first = n;
+
+ /* see if we've passed our previous maximum */
+ k = cq_howmany(cq);
+ if (k > cq->max_in)
+ cq->max_in = k;
+
+ return p;
+}
diff --git a/drivers/usb/host/fhci-dbg.c b/drivers/usb/host/fhci-dbg.c
new file mode 100644
index 0000000..daa79fc
--- /dev/null
+++ b/drivers/usb/host/fhci-dbg.c
@@ -0,0 +1,133 @@
+/*
+ * Freescale QUICC Engine USB Host Controller Driver
+ *
+ * Copyright (c) Freescale Semicondutor, Inc. 2006.
+ * Shlomi Gridish <gridish at freescale.com>
+ * Jerry Huang <Chang-Ming.Huang at freescale.com>
+ * Copyright (c) Logic Product Development, Inc. 2007
+ * Peter Barada <peterb at logicpd.com>
+ * Copyright (c) MontaVista Software, Inc. 2008.
+ * Anton Vorontsov <avorontsov at ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+
+#ifndef CONFIG_FHCI_DEBUG
+
+static void fhci_dbg_isr(struct fhci_hcd *fhci, int usb_er) {}
+static void fhci_dfs_destroy(struct fhci_hcd *fhci) {}
+static void fhci_dfs_create(struct fhci_hcd *fhci) {}
+
+#else
+
+static void fhci_dbg_isr(struct fhci_hcd *fhci, int usb_er)
+{
+ int i;
+
+ if (usb_er == -1) {
+ fhci->usb_irq_stat[12]++;
+ return;
+ }
+
+ for (i = 0; i < 12; ++i) {
+ if (usb_er & (1 << i))
+ fhci->usb_irq_stat[i]++;
+ }
+}
+
+static int fhci_dfs_regs_show(struct seq_file *s, void *v)
+{
+ struct fhci_hcd *fhci = s->private;
+ struct fhci_regs __iomem *regs = fhci->regs;
+
+ seq_printf(s,
+ "mode: 0x%x\n" "addr: 0x%x\n"
+ "command: 0x%x\n" "ep0: 0x%x\n"
+ "event: 0x%x\n" "mask: 0x%x\n"
+ "status: 0x%x\n" "SOF timer: %d\n"
+ "frame number: %d\n"
+ "lines status: 0x%x\n",
+ in_8(®s->usb_mod), in_8(®s->usb_addr),
+ in_8(®s->usb_comm), in_be16(®s->usb_ep[0]),
+ in_be16(®s->usb_event), in_be16(®s->usb_mask),
+ in_8(®s->usb_status), in_be16(®s->usb_sof_tmr),
+ in_be16(®s->usb_frame_num),
+ fhci_ioports_check_bus_state(fhci));
+
+ return 0;
+}
+
+static int fhci_dfs_irq_stat_show(struct seq_file *s, void *v)
+{
+ struct fhci_hcd *fhci = s->private;
+ int *usb_irq_stat = fhci->usb_irq_stat;
+
+ seq_printf(s,
+ "RXB: %d\n" "TXB: %d\n" "BSY: %d\n"
+ "SOF: %d\n" "TXE0: %d\n" "TXE1: %d\n"
+ "TXE2: %d\n" "TXE3: %d\n" "IDLE: %d\n"
+ "RESET: %d\n" "SFT: %d\n" "MSF: %d\n"
+ "IDLE_ONLY: %d\n",
+ usb_irq_stat[0], usb_irq_stat[1], usb_irq_stat[2],
+ usb_irq_stat[3], usb_irq_stat[4], usb_irq_stat[5],
+ usb_irq_stat[6], usb_irq_stat[7], usb_irq_stat[8],
+ usb_irq_stat[9], usb_irq_stat[10], usb_irq_stat[11],
+ usb_irq_stat[12]);
+
+ return 0;
+}
+
+static int fhci_dfs_regs_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, fhci_dfs_regs_show, inode->i_private);
+}
+
+static int fhci_dfs_irq_stat_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, fhci_dfs_irq_stat_show, inode->i_private);
+}
+
+static const struct file_operations fhci_dfs_regs_fops = {
+ .open = fhci_dfs_regs_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static const struct file_operations fhci_dfs_irq_stat_fops = {
+ .open = fhci_dfs_irq_stat_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void fhci_dfs_create(struct fhci_hcd *fhci)
+{
+ struct device *dev = fhci_to_hcd(fhci)->self.controller;
+
+ fhci->dfs_root = debugfs_create_dir(dev->bus_id, NULL);
+ if (!fhci->dfs_root || IS_ERR(fhci->dfs_root))
+ return;
+
+ fhci->dfs_regs = debugfs_create_file("regs", S_IFREG | S_IRUGO,
+ fhci->dfs_root, fhci, &fhci_dfs_regs_fops);
+
+ fhci->dfs_irq_stat = debugfs_create_file("irq_stat",
+ S_IFREG | S_IRUGO, fhci->dfs_root, fhci,
+ &fhci_dfs_irq_stat_fops);
+}
+
+static void fhci_dfs_destroy(struct fhci_hcd *fhci)
+{
+ debugfs_remove(fhci->dfs_irq_stat);
+ debugfs_remove(fhci->dfs_regs);
+ debugfs_remove(fhci->dfs_root);
+}
+
+#endif /* CONFIG_FHCI_DEBUG */
diff --git a/drivers/usb/host/fhci-hcd.c b/drivers/usb/host/fhci-hcd.c
new file mode 100644
index 0000000..cefbce3
--- /dev/null
+++ b/drivers/usb/host/fhci-hcd.c
@@ -0,0 +1,1391 @@
+/*
+ * Freescale QUICC Engine USB Host Controller Driver
+ *
+ * Copyright (c) Freescale Semicondutor, Inc. 2006.
+ * Shlomi Gridish <gridish at freescale.com>
+ * Jerry Huang <Chang-Ming.Huang at freescale.com>
+ * Copyright (c) Logic Product Development, Inc. 2007
+ * Peter Barada <peterb at logicpd.com>
+ * Copyright (c) MontaVista Software, Inc. 2008.
+ * Anton Vorontsov <avorontsov at ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/usb.h>
+#include <linux/of_platform.h>
+#include <asm/qe.h>
+#include <asm/gpio.h>
+#include "../core/hcd.h"
+
+#include "fhci.h"
+#include "fhci-hub.c"
+#include "fhci-q.c"
+#include "fhci-dbg.c"
+#include "fhci-mem.c"
+#include "fhci-cq.c"
+#if defined(CONFIG_FHCI_WITH_BDS)
+#include "fhci-bds.c"
+#elif defined(CONFIG_FHCI_WITH_TDS)
+#include "fhci-tds.c"
+#endif
+
+static void recycle_frame(struct fhci_usb *usb, struct packet *pkt)
+{
+ pkt->data = NULL;
+ pkt->len = 0;
+ pkt->status = USB_TD_OK;
+ pkt->info = 0;
+ pkt->priv_data = 0;
+
+ cq_put(usb->ep0->empty_frame_Q, pkt);
+}
+
+static void *get_empty_frame(struct fhci_usb *usb)
+{
+ return cq_get(usb->ep0->empty_frame_Q);
+}
+
+/* confirm submitted packet */
+static void transaction_confirm(struct fhci_usb *usb, struct packet *pkt)
+{
+ struct td *td;
+ struct packet *td_pkt;
+ struct ed *ed;
+ u32 trans_len;
+ bool td_done = false;
+
+ td = remove_td_from_frame(usb->actual_frame);
+ td_pkt = td->pkt;
+ trans_len = pkt->len;
+ td->status = pkt->status;
+ if (td->type == FHCI_TA_IN && td_pkt->info & PKT_DUMMY_PACKET) {
+ if (((u32) td->data + td->actual_len) && trans_len)
+ memcpy(td->data + td->actual_len, pkt->data,
+ trans_len);
+ cq_put(usb->ep0->dummy_packets_Q, pkt->data);
+ }
+
+ recycle_frame(usb, pkt);
+
+ ed = td->ed;
+ if (ed->mode == FHCI_TF_ISO) {
+ if (ed->td_list.next->next != &ed->td_list) {
+ struct td *td_next =
+ list_entry(ed->td_list.next->next, struct td,
+ node);
+
+ td_next->start_frame = usb->actual_frame->frame_num;
+ }
+ td->actual_len = trans_len;
+ td_done = true;
+ } else if ((td->status & USB_TD_ERROR) &&
+ !(td->status & USB_TD_TX_ER_NAK)) {
+ /*
+ * There was an error on the transaction (but not NAK).
+ * If it is fatal error (data underrun, stall, bad pid or 3
+ * errors exceeded), mark this TD as done.
+ */
+ if ((td->status & USB_TD_RX_DATA_UNDERUN) ||
+ (td->status & USB_TD_TX_ER_STALL) ||
+ (td->status & USB_TD_RX_ER_PID) ||
+ (++td->error_cnt >= 3)) {
+ ed->state = FHCI_ED_HALTED;
+ td_done = true;
+
+ if (td->status & USB_TD_RX_DATA_UNDERUN) {
+ td->toggle = !td->toggle;
+ td->actual_len += trans_len;
+ }
+ } else {
+ /* it is not a fatal error -retry this transaction */
+ td->nak_cnt = 0;
+ td->error_cnt++;
+ td->status = USB_TD_OK;
+ }
+ } else if (td->status & USB_TD_TX_ER_NAK) {
+ /* there was a NAK response */
+ td->nak_cnt++;
+ td->error_cnt = 0;
+ td->status = USB_TD_OK;
+ } else {
+ /* there was no error on transaction */
+ td->error_cnt = 0;
+ td->nak_cnt = 0;
+ td->toggle = !td->toggle;
+ td->actual_len += trans_len;
+
+ if (td->len == td->actual_len)
+ td_done = true;
+ }
+
+ if (td_done)
+ move_td_from_ed_to_done_list(usb, ed);
+}
+
+void qe_usb_stop_tx(u8 ep)
+{
+ qe_issue_cmd(QE_USB_STOP_TX, QE_CR_SUBBLOCK_USB, ep, 0);
+}
+
+static void qe_usb_restart_tx(u8 ep)
+{
+ qe_issue_cmd(QE_USB_RESTART_TX, QE_CR_SUBBLOCK_USB, ep, 0);
+}
+
+/* Cancel transmission on the USB endpoint*/
+static void abort_transmission(struct fhci_usb *usb)
+{
+ /* issue stop Tx command */
+ qe_usb_stop_tx(EP_ZERO);
+ udelay(1000);
+ /* flush Tx FIFOs */
+ usb->fhci->regs->usb_comm = (u8) (USB_CMD_FLUSH_FIFO | EP_ZERO);
+ udelay(1000);
+ /* reset Tx BDs */
+ flush_bds(usb);
+ /* issue restart Tx command */
+ qe_usb_restart_tx(EP_ZERO);
+}
+
+/*
+ * Flush all transmitted packets from BDs
+ * This routine is called when disabling the USB port to flush all
+ * transmissions that are allready scheduled in the BDs
+ */
+void flush_all_transmissions(struct fhci_usb *usb)
+{
+ u8 mode;
+ struct td *td;
+
+ mode = usb->fhci->regs->usb_mod;
+ usb->fhci->regs->usb_mod = (u8) (mode & ~USB_MODE_EN);
+
+ flush_bds(usb);
+
+ while ((td = peek_td_from_frame(usb->actual_frame)) != NULL) {
+ struct packet *pkt = td->pkt;
+
+ pkt->status = USB_TD_TX_ER_TIMEOUT;
+ transaction_confirm(usb, pkt);
+ }
+
+ usb->actual_frame->frame_status = FRAME_END_TRANSMISSION;
+
+ /* reset the event register */
+ usb->fhci->regs->usb_event = 0xffff;
+ /* enable the USB controller */
+ usb->fhci->regs->usb_mod = (u8) (mode | USB_MODE_EN);
+}
+
+/*
+ * This function forms the packet and transmit the packet. This function
+ * will handle all endpoint type:ISO,interrupt,control and bulk
+ */
+static int add_packet(struct fhci_usb *usb, struct ed *ed,
+ struct td *td)
+{
+ u32 fw_transaction_time, len = 0;
+ struct packet *pkt;
+ u8 *data = NULL;
+
+ /* calcalate data address,len and toggle and then add the transaction */
+ if (td->toggle == USB_TD_TOGGLE_CARRY)
+ td->toggle = ed->toggle_carry;
+
+ switch (ed->mode) {
+ case FHCI_TF_ISO:
+ len = td->len;
+ if (td->type != FHCI_TA_IN)
+ data = td->data;
+ break;
+ case FHCI_TF_CTRL:
+ case FHCI_TF_BULK:
+ len = min(td->len - td->actual_len, ed->max_pkt_size);
+ if (!((td->type == FHCI_TA_IN) &&
+ ((len + td->actual_len) == td->len)))
+ data = td->data + td->actual_len;
+ break;
+ case FHCI_TF_INTR:
+ len = min(td->len, ed->max_pkt_size);
+ if (!((td->type == FHCI_TA_IN) &&
+ ((td->len + CRC_SIZE) >= ed->max_pkt_size)))
+ data = td->data;
+ default:
+ break;
+ }
+
+ if (usb->port_status == FHCI_PORT_FULL)
+ fw_transaction_time = (((len + PROTOCOL_OVERHEAD) * 11) >> 4);
+ else
+ fw_transaction_time = ((len + PROTOCOL_OVERHEAD) * 6);
+
+ /* check if there's enough space in this frame to submit this TD */
+ if (usb->actual_frame->total_bytes + len + PROTOCOL_OVERHEAD >=
+ usb->max_bytes_per_frame)
+ return -1;
+
+ /* check if there's enough time in this frame to submit this TD */
+ if (usb->actual_frame->frame_status != FRAME_IS_PREPARED &&
+ (usb->actual_frame->frame_status & FRAME_END_TRANSMISSION ||
+ (fw_transaction_time + usb->sw_transaction_time >=
+ 1000 - get_sof_timer_count(usb))))
+ return -1;
+
+ /* update frame object fields before transmitting */
+ pkt = get_empty_frame(usb);
+ if (!pkt)
+ return -1;
+ td->pkt = pkt;
+
+ pkt->info = 0;
+ if (data == NULL) {
+ data = cq_get(usb->ep0->dummy_packets_Q);
+ BUG_ON(!data);
+ pkt->info = PKT_DUMMY_PACKET;
+ }
+ pkt->data = data;
+ pkt->len = len;
+ pkt->status = USB_TD_OK;
+ /* update TD status field before transmitting */
+ td->status = USB_TD_INPROGRESS;
+ /* update actual frame time object with the actual transmission */
+ usb->actual_frame->total_bytes += (len + PROTOCOL_OVERHEAD);
+ add_td_to_frame(usb->actual_frame, td);
+
+ if (usb->port_status != FHCI_PORT_FULL &&
+ usb->port_status != FHCI_PORT_LOW) {
+ pkt->status = USB_TD_TX_ER_TIMEOUT;
+ pkt->len = 0;
+ transaction_confirm(usb, pkt);
+ } else if (host_transaction(usb, pkt, td->type, ed->dev_addr,
+ ed->ep_addr, ed->mode, ed->speed, td->toggle)) {
+ /* remove TD from actual frame */
+ list_del_init(&td->frame_lh);
+ td->status = USB_TD_OK;
+ if (pkt->info & PKT_DUMMY_PACKET)
+ cq_put(usb->ep0->dummy_packets_Q, pkt->data);
+ recycle_frame(usb, pkt);
+ usb->actual_frame->total_bytes -= (len + PROTOCOL_OVERHEAD);
+ return -1;
+ }
+
+ return len;
+}
+
+/*
+ * This function goes through the endpoint list and schedules the
+ * transactions within this list
+ */
+static int scan_ed_list(struct fhci_usb *usb,
+ struct list_head *list, enum fhci_tf_mode list_type)
+{
+ static const int frame_part[4] = {
+ [FHCI_TF_CTRL] = MAX_BYTES_PER_FRAME,
+ [FHCI_TF_ISO] = (MAX_BYTES_PER_FRAME *
+ MAX_PERIODIC_FRAME_USAGE) / 100,
+ [FHCI_TF_BULK] = MAX_BYTES_PER_FRAME,
+ [FHCI_TF_INTR] = (MAX_BYTES_PER_FRAME *
+ MAX_PERIODIC_FRAME_USAGE) / 100
+ };
+ struct list_head *ed_lh = NULL;
+ struct ed *ed;
+ struct td *td;
+ int ans = 1;
+ u32 save_transaction_time = usb->sw_transaction_time;
+
+ list_for_each(ed_lh, list) {
+ ed = list_entry(ed_lh, struct ed, node);
+ td = ed->td_head;
+
+ if (td != NULL && td->status != USB_TD_INPROGRESS) {
+ if (ed->state != FHCI_ED_OPER) {
+ if (ed->state == FHCI_ED_URB_DEL) {
+ td->status = USB_TD_OK;
+ move_td_from_ed_to_done_list(usb, ed);
+ ed->state = FHCI_ED_SKIP;
+ }
+ }
+ /*
+ * if it isn't interrupt pipe or it is not iso pipe
+ * and the interval time passed
+ */
+ else if (!(list_type == FHCI_TF_INTR ||
+ list_type == FHCI_TF_ISO) ||
+ (((usb->actual_frame->frame_num -
+ td->start_frame) & 0x7ff) >=
+ td->interval)) {
+ if (add_packet(usb, ed, td) >= 0) {
+ /* update time stamps in the TD */
+ td->start_frame =
+ usb->actual_frame->frame_num;
+ usb->sw_transaction_time +=
+ save_transaction_time;
+
+ if (usb->actual_frame->total_bytes >=
+ usb->max_bytes_per_frame) {
+ usb->actual_frame->
+ frame_status =
+ FRAME_DATA_END_TRANSMISSION;
+ push_dummy_bd(usb->ep0);
+ ans = 0;
+ break;
+ }
+ if (usb->actual_frame->total_bytes >=
+ frame_part[list_type])
+ break;
+ }
+ }
+ }
+ }
+
+ /* be fair to each ED(move list head around) */
+ move_head_to_tail(list);
+ usb->sw_transaction_time = save_transaction_time;
+
+ return ans;
+}
+
+static u32 rotate_frames(struct fhci_usb *usb)
+{
+ struct fhci_hcd *fhci = usb->fhci;
+
+ if (!list_empty(&usb->actual_frame->tds_list)) {
+ if ((((u16)(fhci->pram->frame_num & 0x07ff) -
+ usb->actual_frame->frame_num) & 0x7ff) > 5)
+ flush_actual_frame(usb);
+ else
+ return -EINVAL;
+ }
+
+ usb->actual_frame->frame_status = FRAME_IS_PREPARED;
+ usb->actual_frame->frame_num = (u16) (fhci->pram->frame_num & 0x7ff);
+ usb->actual_frame->total_bytes = 0;
+
+ return 0;
+}
+
+/*
+ * This function schedule the USB transaction and will process the
+ * endpoint in the following order: iso, interrupt, control and bulk.
+ */
+static void schedule_transactions(struct fhci_usb *usb)
+{
+ int left = 1;
+
+ if (usb->actual_frame->frame_status & FRAME_END_TRANSMISSION)
+ if (rotate_frames(usb) != 0)
+ return;
+
+ if (usb->actual_frame->frame_status & FRAME_END_TRANSMISSION)
+ return;
+
+ if (usb->actual_frame->total_bytes == 0) {
+ /* schedule the next available ISO transfer
+ *or next stage of the ISO transfer*/
+ scan_ed_list(usb, &usb->hc_list->iso_list, FHCI_TF_ISO);
+
+ /*
+ * schedule the next available interrupt transfer or
+ * the next stage of the interrupt transfer
+ */
+ scan_ed_list(usb, &usb->hc_list->intr_list, FHCI_TF_INTR);
+
+ /*
+ * schedule the next available control transfer
+ * or the next stage of the control transfer
+ */
+ left =
+ scan_ed_list(usb, &usb->hc_list->ctrl_list, FHCI_TF_CTRL);
+ }
+
+ /*
+ * schedule the next available bulk transfer or the next stage of the
+ * bulk transfer
+ */
+ if (left > 0)
+ scan_ed_list(usb, &usb->hc_list->bulk_list, FHCI_TF_BULK);
+}
+
+/* initialize the endpoint zero */
+u32 endpoint_zero_init(struct fhci_usb *usb, enum fhci_mem_alloc data_mem,
+ u32 ring_len)
+{
+ u32 rc;
+
+ rc = create_endpoint(usb, data_mem, ring_len);
+ if (rc)
+ return rc;
+
+ /* inilialize endpoint registers */
+ init_endpoint_registers(usb, usb->ep0, data_mem);
+
+ return 0;
+}
+
+/* enable the USB interrupts */
+void fhci_usb_enable_interrupt(struct fhci_usb *usb)
+{
+ struct fhci_hcd *fhci = usb->fhci;
+
+ if (usb->intr_nesting_cnt == 1) {
+ /* initialize the USB interrupt */
+ enable_irq(fhci_to_hcd(fhci)->irq);
+
+ /* initialize the event register and mask register */
+ usb->fhci->regs->usb_event = 0xffff;
+ usb->fhci->regs->usb_mask = usb->saved_msk;
+
+ /* enable the timer interrupts */
+ enable_irq(fhci->timer_irq);
+ } else if (usb->intr_nesting_cnt > 1)
+ fhci_info(fhci, "unbalanced USB interrupts nesting\n");
+ usb->intr_nesting_cnt--;
+}
+
+/* diable the usb interrupt */
+void fhci_usb_disable_interrupt(struct fhci_usb *usb)
+{
+ struct fhci_hcd *fhci = usb->fhci;
+
+ if (usb->intr_nesting_cnt == 0) {
+ /* diable the timer interrupt */
+ disable_irq(fhci->timer_irq);
+
+ /* disable the usb interrupt */
+ disable_irq(fhci_to_hcd(fhci)->irq);
+ usb->fhci->regs->usb_mask = 0;
+ }
+ usb->intr_nesting_cnt++;
+}
+
+/* enable the USB controller */
+u32 fhci_usb_enable(struct fhci_hcd *fhci)
+{
+ struct fhci_usb *usb = fhci->usb_lld;
+ u8 mode;
+
+ /* configure IO ports for USB--in Linux kernel initialize */
+
+ usb->fhci->regs->usb_event = 0xffff;
+ usb->fhci->regs->usb_mask = usb->saved_msk;
+
+ mode = usb->fhci->regs->usb_mod;
+ mode |= USB_MODE_EN;
+ usb->fhci->regs->usb_mod = mode;
+
+ msleep(100);
+
+ return 0;
+}
+
+/* disable the USB controller */
+u32 fhci_usb_disable(struct fhci_hcd *fhci)
+{
+ struct fhci_usb *usb = fhci->usb_lld;
+ u8 mode;
+
+ fhci_usb_disable_interrupt(usb);
+ usb_port_disable(fhci);
+
+ /* disable the usb controller */
+ if (usb->port_status == FHCI_PORT_FULL ||
+ usb->port_status == FHCI_PORT_LOW)
+ device_disconnected_interrupt(fhci);
+
+ mode = usb->fhci->regs->usb_mod;
+ mode &= ~USB_MODE_EN;
+ usb->fhci->regs->usb_mod = mode;
+
+ return 0;
+}
+
+/* check the bus state by polling the QE bit on the IO ports */
+int fhci_ioports_check_bus_state(struct fhci_hcd *fhci)
+{
+ u8 bits = 0;
+
+ /* check USBOE,if transmitting,exit */
+ if (!gpio_get_value(fhci->gpios[GPIO_USBOE]))
+ return -1;
+
+ /* check USBRP */
+ if (gpio_get_value(fhci->gpios[GPIO_USBRP]))
+ bits |= 0x2;
+
+ /* check USBRN */
+ if (gpio_get_value(fhci->gpios[GPIO_USBRN]))
+ bits |= 0x1;
+
+ return bits;
+}
+
+/* Handles SOF interrupt */
+static void sof_interrupt(struct fhci_hcd *fhci)
+{
+ struct fhci_usb *usb = fhci->usb_lld;
+
+ if ((usb->port_status == FHCI_PORT_DISABLED) &&
+ (usb->vroot_hub->port.wPortStatus & USB_PORT_STAT_CONNECTION) &&
+ !(usb->vroot_hub->port.wPortChange & USB_PORT_STAT_C_CONNECTION)) {
+ if (usb->vroot_hub->port.wPortStatus & USB_PORT_STAT_LOW_SPEED)
+ usb->port_status = FHCI_PORT_LOW;
+ else
+ usb->port_status = FHCI_PORT_FULL;
+ /* Disable IDLE */
+ usb->saved_msk &= ~USB_E_IDLE_MASK;
+ usb->fhci->regs->usb_mask = usb->saved_msk;
+ }
+
+ qe_reset_ref_timer_16(fhci->timer, 1000000, usb->max_frame_usage);
+
+ host_transmit_actual_frame(usb);
+ usb->actual_frame->frame_status = FRAME_IS_TRANSMITTED;
+
+ schedule_transactions(usb);
+}
+
+/* Handles device disconnected interrupt on port */
+static void device_disconnected_interrupt(struct fhci_hcd *fhci)
+{
+ u8 mode;
+ struct fhci_usb *usb = fhci->usb_lld;
+
+ fhci_usb_disable_interrupt(usb);
+ mode = usb->fhci->regs->usb_mod;
+ mode &= ~USB_MODE_LSS;
+ usb->fhci->regs->usb_mod = mode;
+ usb->port_status = FHCI_PORT_DISABLED;
+
+ /* Enable IDLE since we want to know if something comes along */
+ usb->saved_msk |= USB_E_IDLE_MASK;
+ usb->fhci->regs->usb_mask = usb->saved_msk;
+
+ usb->vroot_hub->port.wPortStatus &= ~USB_PORT_STAT_CONNECTION;
+ usb->vroot_hub->port.wPortChange |= USB_PORT_STAT_C_CONNECTION;
+ usb->max_bytes_per_frame = 0;
+ fhci_usb_enable_interrupt(usb);
+}
+
+/* detect a new device connected on the USB port*/
+static void device_connected_interrupt(struct fhci_hcd *fhci)
+{
+
+ struct fhci_usb *usb = fhci->usb_lld;
+ int state;
+ int ret;
+ u8 mode;
+
+ fhci_usb_disable_interrupt(usb);
+ state = fhci_ioports_check_bus_state(fhci);
+
+ /* low-speed device was connected to the USB port */
+ if (state == 1) {
+ ret = qe_usb_clock_set(fhci->lowspeed_clk, USB_CLOCK >> 3);
+ if (ret) {
+ fhci_info(fhci, "Low-Speed device is not supported, "
+ "try use BRGx\n");
+ return;
+ }
+
+ mode = usb->fhci->regs->usb_mod;
+ mode |= USB_MODE_LSS;
+ usb->fhci->regs->usb_mod = mode;
+ usb->vroot_hub->port.wPortStatus |=
+ (USB_PORT_STAT_LOW_SPEED |
+ USB_PORT_STAT_CONNECTION);
+ usb->vroot_hub->port.wPortChange |=
+ USB_PORT_STAT_C_CONNECTION;
+ usb->max_bytes_per_frame =
+ (MAX_BYTES_PER_FRAME >> 3) - 7;
+ usb_port_enable(usb);
+ } else if (state == 2) {
+ ret = qe_usb_clock_set(fhci->fullspeed_clk, USB_CLOCK);
+ if (ret) {
+ fhci_info(fhci, "Full-Speed device is not supported, "
+ "try use CLKx\n");
+ return;
+ }
+
+ mode = usb->fhci->regs->usb_mod;
+ mode &= ~USB_MODE_LSS;
+ usb->fhci->regs->usb_mod = mode;
+ usb->vroot_hub->port.wPortStatus &=
+ ~USB_PORT_STAT_LOW_SPEED;
+ usb->vroot_hub->port.wPortStatus |=
+ USB_PORT_STAT_CONNECTION;
+ usb->vroot_hub->port.wPortChange |=
+ USB_PORT_STAT_C_CONNECTION;
+ usb->max_bytes_per_frame = (MAX_BYTES_PER_FRAME - 15);
+ usb_port_enable(usb);
+ }
+ fhci_usb_enable_interrupt(usb);
+}
+
+irqreturn_t fhci_frame_limit_timer_irq(int irq, void *_hcd)
+{
+ struct usb_hcd *hcd = _hcd;
+ struct fhci_hcd *fhci = hcd_to_fhci(hcd);
+ struct fhci_usb *usb = fhci->usb_lld;
+
+ spin_lock(&fhci->lock);
+
+ qe_reset_ref_timer_16(fhci->timer, 1000000, 1000);
+
+ if (usb->actual_frame->frame_status == FRAME_IS_TRANSMITTED) {
+ usb->actual_frame->frame_status = FRAME_TIMER_END_TRANSMISSION;
+ push_dummy_bd(usb->ep0);
+ }
+
+ schedule_transactions(usb);
+
+ spin_unlock(&fhci->lock);
+
+ return IRQ_HANDLED;
+}
+
+
+
+static irqreturn_t fhci_irq(struct usb_hcd *hcd)
+{
+ struct fhci_hcd *fhci = hcd_to_fhci(hcd);
+ struct fhci_usb *usb;
+ register u16 usb_er = 0;
+
+ spin_lock(&fhci->lock);
+
+ usb = fhci->usb_lld;
+
+ usb->intr_counter++;
+ do {
+ usb_er |= (u16) (usb->fhci->regs->usb_event &
+ usb->fhci->regs->usb_mask);
+
+ /* clear event bits for next time */
+ usb->fhci->regs->usb_event = usb_er;
+
+ fhci_dbg_isr(fhci, usb_er);
+
+ if (usb_er & USB_E_RESET_MASK) {
+ if ((usb->port_status == FHCI_PORT_FULL) ||
+ (usb->port_status == FHCI_PORT_LOW)) {
+ device_disconnected_interrupt(fhci);
+ usb_er &= ~USB_E_IDLE_MASK;
+ } else if (usb->port_status ==
+ FHCI_PORT_WAITING) {
+ usb->port_status = FHCI_PORT_DISCONNECTING;
+
+ /* Turn on IDLE since we want to disconnect */
+ usb->saved_msk |= USB_E_IDLE_MASK;
+ usb->fhci->regs->usb_event = usb->saved_msk;
+ } else if (usb->port_status == FHCI_PORT_DISABLED) {
+ if (fhci_ioports_check_bus_state(fhci) == 1)
+ device_connected_interrupt(fhci);
+ }
+ usb_er &= ~USB_E_RESET_MASK;
+ }
+
+ if (usb_er & USB_E_MSF_MASK) {
+ abort_transmission(fhci->usb_lld);
+ usb_er &= ~USB_E_MSF_MASK;
+ }
+
+ if (usb_er & (USB_E_SOF_MASK | USB_E_SFT_MASK)) {
+ sof_interrupt(fhci);
+ usb_er &= ~(USB_E_SOF_MASK | USB_E_SFT_MASK);
+ }
+#ifdef CONFIG_FHCI_WITH_BDS
+ if (usb_er & USB_E_RXB_MASK) {
+ if (receive_packet_interrupt(fhci) == 0)
+ usb_er &= ~USB_E_RXB_MASK;
+ }
+#endif /* CONFIG_FHCI_WITH_BDS */
+
+ if (usb_er & USB_E_TXB_MASK) {
+ tx_conf_interrupt(fhci->usb_lld);
+ usb_er &= ~USB_E_TXB_MASK;
+#ifdef CONFIG_FHCI_WITH_BDS
+ continue;
+#endif /* CONFIG_FHCI_WITH_BDS */
+ }
+
+ if (usb_er & USB_E_TXE1_MASK) {
+ tx_conf_interrupt(fhci->usb_lld);
+ usb_er &= ~USB_E_TXE1_MASK;
+#ifdef CONFIG_FHCI_WITH_BDS
+ continue;
+#endif /* CONFIG_FHCI_WITH_BDS */
+ }
+
+ if (usb_er & USB_E_IDLE_MASK) {
+ if (usb->port_status == FHCI_PORT_DISABLED) {
+ usb_er &= ~USB_E_RESET_MASK;
+ device_connected_interrupt(fhci);
+ } else if (usb->port_status ==
+ FHCI_PORT_DISCONNECTING) {
+ usb->port_status = FHCI_PORT_WAITING;
+
+ /* Disable IDLE */
+ usb->saved_msk &= ~USB_E_IDLE_MASK;
+ usb->fhci->regs->usb_mask = usb->saved_msk;
+ } else
+ fhci_dbg_isr(fhci, -1);
+
+ usb_er &= ~USB_E_IDLE_MASK;
+ }
+ } while (usb_er);
+
+ spin_unlock(&fhci->lock);
+
+ return IRQ_HANDLED;
+}
+
+static void fhci_mem_free(struct fhci_hcd *fhci)
+{
+ struct td *td;
+ struct ed *ed;
+
+ while (!list_empty(&fhci->empty_eds)) {
+ ed = list_entry(fhci->empty_eds.next, struct ed, node);
+ list_del(fhci->empty_eds.next);
+ }
+
+ while (!list_empty(&fhci->empty_tds)) {
+ td = list_entry(fhci->empty_tds.next, struct td, node);
+ list_del(fhci->empty_tds.next);
+ }
+
+ kfree(fhci->vroot_hub);
+ kfree(fhci->hc_list);
+}
+
+DECLARE_TASKLET(fhci_tasklet, process_done_list, 0);
+
+static int fhci_mem_init(struct fhci_hcd *fhci)
+{
+ int i, error = 0;
+
+ fhci->hc_list = kzalloc(sizeof(*fhci->hc_list), GFP_KERNEL);
+ if (!fhci->hc_list)
+ return -ENOMEM;
+
+ INIT_LIST_HEAD(&fhci->hc_list->ctrl_list);
+ INIT_LIST_HEAD(&fhci->hc_list->bulk_list);
+ INIT_LIST_HEAD(&fhci->hc_list->iso_list);
+ INIT_LIST_HEAD(&fhci->hc_list->intr_list);
+ INIT_LIST_HEAD(&fhci->hc_list->done_list);
+
+ fhci->vroot_hub = kzalloc(sizeof(*fhci->vroot_hub), GFP_KERNEL);
+ if (!fhci->vroot_hub)
+ return -ENOMEM;
+
+
+ INIT_LIST_HEAD(&fhci->empty_eds);
+ INIT_LIST_HEAD(&fhci->empty_tds);
+
+ /* initialize work queue to handle done list */
+ fhci_tasklet.data = (unsigned long)fhci;
+ fhci->process_done_task = &fhci_tasklet;
+
+ for (i = 0; i < MAX_TDS; i++) {
+ struct td *td = kmalloc(sizeof(*td), GFP_KERNEL);
+
+ if (!td) {
+ error = 1;
+ break;
+ }
+ recycle_empty_td(fhci, td);
+ }
+ for (i = 0; i < MAX_EDS; i++) {
+ struct ed *ed = kmalloc(sizeof(*ed), GFP_KERNEL);
+
+ if (!ed) {
+ error = 1;
+ break;
+ }
+ recycle_empty_ed(fhci, ed);
+ }
+
+ if (error) {
+ fhci_mem_free(fhci);
+ return -ENOMEM;
+ }
+
+ fhci->active_urbs = 0;
+
+ return error;
+}
+
+/* transfer complted callback*/
+static u32 transfer_confirm_callback(struct fhci_hcd *fhci)
+{
+ if (!fhci->process_done_task->state)
+ tasklet_schedule(fhci->process_done_task);
+ return 0;
+}
+
+/* destroy the fhci_usb structure */
+void fhci_usb_free(void *lld)
+{
+ struct fhci_usb *usb = lld;
+ struct fhci_hcd *fhci = usb->fhci;
+
+ if (usb) {
+ config_transceiver(fhci, FHCI_OP_POWER_OFF);
+ config_transceiver(fhci, FHCI_OP_DISCONNECT);
+
+ endpoint_zero_free(usb);
+#if defined(CONFIG_FHCI_HAS_NO_RT_SOF)
+ kfree(usb->sof_pkts);
+#elif defined(CONFIG_FHCI_HAS_UC_RT_SOF)
+ u8 *tmp_crc5_pkts = phys_to_virt(usb->pram->sof_tbl);
+ kfree(tmp_crc5_pkts);
+#endif
+ kfree(usb->actual_frame);
+ kfree(usb);
+ }
+}
+
+/* initialize the USB*/
+u32 fhci_usb_init(struct fhci_hcd *fhci)
+{
+ struct fhci_usb *usb = fhci->usb_lld;
+ u8 mode = 0;
+
+ memset_io(usb->fhci->pram, 0, FHCI_PRAM_SIZE);
+
+ usb->port_status = FHCI_PORT_DISABLED;
+ usb->max_frame_usage = FRAME_TIME_USAGE;
+#ifdef CONFIG_FHCI_WITH_BDS
+ /* the predefined time limitation are for the driver with
+ * transcation level interface, so we have to take about 2 times
+ */
+ usb->sw_transaction_time = SW_FIX_TIME_BETWEEN_TRANSACTION * 2;
+#else
+ usb->sw_transaction_time = SW_FIX_TIME_BETWEEN_TRANSACTION;
+#endif
+
+ usb->actual_frame = kzalloc(sizeof(*usb->actual_frame), GFP_KERNEL);
+ if (!usb->actual_frame) {
+ fhci_usb_free(usb);
+ return -ENOMEM;
+ }
+
+ INIT_LIST_HEAD(&usb->actual_frame->tds_list);
+
+ /* initializing registers on chip clear frame number */
+ fhci->pram->frame_num = 0;
+
+ /* clear rx state */
+ fhci->pram->rx_state = 0;
+
+ /* set mask register */
+ usb->saved_msk = (USB_E_TXB_MASK |
+ USB_E_TXE1_MASK |
+ USB_E_IDLE_MASK |
+ USB_E_RESET_MASK | USB_E_SFT_MASK | USB_E_MSF_MASK);
+
+#ifdef CONFIG_FHCI_WITH_BDS
+ usb->saved_msk |= USB_E_RXB_MASK;
+#endif
+
+ /* config the usb mode register */
+ mode = USB_MODE_HOST | USB_MODE_EN;
+ usb->fhci->regs->usb_mod = mode;
+
+ /* clearing the mask register */
+ usb->fhci->regs->usb_mask = (u16) 0x0;
+
+ /* initialing the event register */
+ usb->fhci->regs->usb_event = (u16) 0xffff;
+
+ if (endpoint_zero_init(usb, DEFAULT_DATA_MEM, DEFAULT_RING_LEN) != 0) {
+ fhci_usb_free(usb);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* initialize the fhci_usb struct and the corresponding data staruct*/
+struct fhci_usb *fhci_create_lld(struct fhci_hcd *fhci)
+{
+ struct fhci_usb *usb;
+
+ /* allocate memory for SCC data structure */
+ usb = kzalloc(sizeof(*usb), GFP_KERNEL);
+ if (!usb) {
+ fhci_err(fhci, "no memory for SCC data struct\n");
+ return NULL;
+ }
+
+ usb->fhci = fhci;
+ usb->hc_list = fhci->hc_list;
+ usb->vroot_hub = fhci->vroot_hub;
+
+ usb->transfer_confirm = transfer_confirm_callback;
+
+ return usb;
+}
+
+static int fhci_start(struct usb_hcd *hcd)
+{
+ int ret;
+ struct fhci_hcd *fhci = hcd_to_fhci(hcd);
+
+ ret = fhci_mem_init(fhci);
+
+ fhci->usb_lld = fhci_create_lld(fhci);
+ if (!fhci->usb_lld) {
+ fhci_err(fhci, "low level driver config failed\n");
+ fhci_mem_free(fhci);
+ return -ENODEV;
+ }
+ if (fhci_usb_init(fhci)) {
+ fhci_err(fhci, "low level driver initialize failed\n");
+ fhci_mem_free(fhci);
+ return -ENODEV;
+ }
+ spin_lock_init(&fhci->lock);
+
+ /* connect the virtual root hub */
+ fhci->vroot_hub->dev_num = 1; /* this field may be needed to fix */
+ fhci->vroot_hub->hub.wHubStatus = 0;
+ fhci->vroot_hub->hub.wHubChange = 0;
+ fhci->vroot_hub->port.wPortStatus = 0;
+ fhci->vroot_hub->port.wPortChange = 0;
+
+ hcd->state = HC_STATE_RUNNING;
+
+ /*
+ * From here on, khubd concurrently accesses the root
+ * hub; drivers will be talking to enumerated devices.
+ * (On restart paths, khubd already knows about the root
+ * hub and could find work as soon as we wrote FLAG_CF.)
+ *
+ * Before this point the HC was idle/ready. After, khubd
+ * and device drivers may start it running.
+ */
+ fhci_usb_enable(fhci);
+
+ return 0;
+}
+
+static void fhci_stop(struct usb_hcd *hcd)
+{
+ struct fhci_hcd *fhci = hcd_to_fhci(hcd);
+
+ fhci_usb_disable_interrupt(fhci->usb_lld);
+ fhci_usb_disable(fhci);
+
+ fhci_usb_free(fhci->usb_lld);
+ fhci->usb_lld = NULL;
+ fhci_mem_free(fhci);
+}
+
+static int fhci_urb_enqueue(struct usb_hcd *hcd,
+ struct urb *urb, gfp_t mem_flags)
+{
+ struct fhci_hcd *fhci = hcd_to_fhci(hcd);
+ u32 pipe = urb->pipe;
+ int i, size = 0;
+ struct urb_priv *urb_priv;
+
+ spin_lock(&fhci->lock);
+
+ switch (usb_pipetype(pipe)) {
+ case PIPE_CONTROL:
+ /* 1 td fro setup,1 for ack */
+ size = 2;
+ case PIPE_BULK:
+ /* one td for every 4096 bytes(can be upto 8k) */
+ size += urb->transfer_buffer_length / 4096;
+ /* ...add for any remaining bytes... */
+ if ((urb->transfer_buffer_length % 4096) != 0)
+ size++;
+ /* ..and maybe a zero length packet to wrap it up */
+ if (size == 0)
+ size++;
+ else if ((urb->transfer_flags & URB_ZERO_PACKET) != 0
+ && (urb->transfer_buffer_length
+ % usb_maxpacket(urb->dev, pipe,
+ usb_pipeout(pipe))) != 0)
+ size++;
+ break;
+ case PIPE_ISOCHRONOUS:
+ size = urb->number_of_packets;
+ if (size <= 0)
+ return -EINVAL;
+ for (i = 0; i < urb->number_of_packets; i++) {
+ urb->iso_frame_desc[i].actual_length = 0;
+ urb->iso_frame_desc[i].status = (u32) (-EXDEV);
+ }
+ break;
+ case PIPE_INTERRUPT:
+ size = 1;
+ }
+
+ /* allocate the private part of the URB */
+ urb_priv = kzalloc(sizeof(*urb_priv), mem_flags);
+ if (!urb_priv)
+ return -ENOMEM;
+
+ /* allocate the private part of the URB */
+ urb_priv->tds = kzalloc(size * sizeof(struct td), mem_flags);
+ if (!urb_priv->tds) {
+ kfree(urb_priv);
+ return -ENOMEM;
+ }
+
+ /* fill the private part of the URB */
+ urb_priv->num_of_tds = size;
+
+ urb->status = -EINPROGRESS;
+ urb->actual_length = 0;
+ urb->error_count = 0;
+ urb->hcpriv = urb_priv;
+
+ queue_urb(fhci, urb);
+
+ spin_unlock(&fhci->lock);
+ return 0;
+}
+
+/* dequeue FHCI URB */
+static int fhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
+{
+ struct fhci_hcd *fhci = hcd_to_fhci(hcd);
+ struct fhci_usb *usb = fhci->usb_lld;
+
+ spin_lock(&fhci->lock);
+
+ if (!urb || !urb->dev || !urb->dev->bus)
+ goto out;
+
+ if (usb->port_status != FHCI_PORT_DISABLED) {
+ struct urb_priv *urb_priv;
+
+ /*
+ * flag the urb's data for deletion in some upcoming
+ * SF interrupt's delete list processing
+ */
+ urb_priv = urb->hcpriv;
+
+ if (!urb_priv || (urb_priv->state == URB_DEL))
+ goto out;
+
+ urb_priv->state = URB_DEL;
+
+ /* already pending? */
+ urb_priv->ed->state = FHCI_ED_URB_DEL;
+ } else
+ urb_complete_free(fhci, urb);
+out:
+ spin_unlock(&fhci->lock);
+
+ return 0;
+}
+
+static void fhci_endpoint_disable(struct usb_hcd *hcd,
+ struct usb_host_endpoint *ep)
+{
+ struct fhci_hcd *fhci;
+ struct ed *ed;
+
+ fhci = hcd_to_fhci(hcd);
+ spin_lock(&fhci->lock);
+ ed = ep->hcpriv;
+ if (ed) {
+ while (ed->td_head != NULL) {
+ struct td *td = remove_td_from_ed(ed);
+ urb_complete_free(fhci, td->urb);
+ }
+ recycle_empty_ed(fhci, ed);
+ ep->hcpriv = NULL;
+ }
+ spin_unlock(&fhci->lock);
+}
+
+static int fhci_get_frame_number(struct usb_hcd *hcd)
+{
+ struct fhci_hcd *fhci = hcd_to_fhci(hcd);
+
+ return get_frame_num(fhci);
+}
+
+static const struct hc_driver fhci_driver = {
+ .description = "fsl,usb-fhci",
+ .product_desc = "FHCI HOST Controller",
+ .hcd_priv_size = sizeof(struct fhci_hcd),
+
+ /* generic hardware linkage */
+ .irq = fhci_irq,
+ .flags = HCD_USB11,
+
+ /* basic lifecycle operation */
+ .start = fhci_start,
+ .stop = fhci_stop,
+
+ /* managing i/o requests and associated device resources */
+ .urb_enqueue = fhci_urb_enqueue,
+ .urb_dequeue = fhci_urb_dequeue,
+ .endpoint_disable = fhci_endpoint_disable,
+
+ /* scheduling support */
+ .get_frame_number = fhci_get_frame_number,
+
+ /* root hub support */
+ .hub_status_data = fhci_hub_status_data,
+ .hub_control = fhci_hub_control,
+};
+
+struct fhci_probe_info {
+ struct resource regs;
+ unsigned long pram_addr;
+ struct resource usb_irq;
+ int gpios[NUM_GPIOS];
+ enum qe_clock fullspeed_clk;
+ enum qe_clock lowspeed_clk;
+ unsigned int power_budget;
+};
+
+static int __devinit fhci_probe(struct device *dev, struct fhci_probe_info *pi)
+{
+ unsigned long ret;
+ int i;
+ struct usb_hcd *hcd = 0;
+ struct fhci_hcd *fhci;
+
+ if (usb_disabled())
+ return -ENODEV;
+
+ hcd = usb_create_hcd(&fhci_driver, dev, dev->bus_id);
+ if (!hcd) {
+ dev_dbg(dev, "could not create hcd\n");
+ return -ENOMEM;
+ }
+
+ dev_set_drvdata(dev, hcd);
+ fhci = hcd_to_fhci(hcd);
+
+ hcd->self.controller = dev;
+ hcd->power_budget = pi->power_budget;
+ hcd->regs = ioremap(pi->regs.start, pi->regs.end - pi->regs.start + 1);
+ fhci->regs = hcd->regs;
+ memcpy(fhci->gpios, pi->gpios, sizeof(fhci->gpios));
+
+ ret = qe_muram_alloc_fixed(pi->pram_addr, FHCI_PRAM_SIZE);
+ if (IS_ERR_VALUE(ret) || ret != pi->pram_addr) {
+ dev_err(dev, "failed to allocate usb pram\n");
+ goto err_pram_alloc;
+ }
+ fhci->pram = qe_muram_addr(pi->pram_addr);
+
+ for (i = 0; i < NUM_GPIOS; i++) {
+ int gpio = fhci->gpios[i];
+
+ if (gpio < 0) {
+ if (gpio < GPIO_SPEED) {
+ dev_err(dev, "incorrect GPIO%d: %d\n",
+ i, gpio);
+ goto err_gpios;
+ } else {
+ dev_info(dev, "assuming board doesn't have "
+ "%s gpio\n", gpio == GPIO_SPEED ?
+ "speed" : "suspn");
+ }
+ }
+
+ ret = gpio_request(gpio, dev->bus_id);
+ if (ret) {
+ dev_err(dev, "failed to request gpio %d", i);
+ goto err_gpios;
+ }
+ }
+
+ ret = fhci->timer = qe_get_timer(16, &fhci->timer_irq);
+ if (ret < 0) {
+ dev_err(dev, "failed to request qe timer: %li", ret);
+ goto err_get_timer;
+ }
+
+ fhci->fullspeed_clk = pi->fullspeed_clk;
+ fhci->lowspeed_clk = pi->lowspeed_clk;
+
+ ret = request_irq(fhci->timer_irq, fhci_frame_limit_timer_irq,
+ IRQF_DISABLED, "qe timer (usb)", hcd);
+ if (ret) {
+ dev_err(dev, "failed to request timer irq");
+ goto err_timer_irq;
+ }
+
+ dev_info(dev, "at 0x%p,irq %d\n", hcd->regs, pi->usb_irq.start);
+
+ /* start with low-speed, if possible */
+ if (fhci->lowspeed_clk != QE_CLK_NONE)
+ qe_usb_clock_set(fhci->lowspeed_clk, USB_CLOCK >> 3);
+ else
+ qe_usb_clock_set(fhci->fullspeed_clk, USB_CLOCK);
+
+ config_transceiver(fhci, FHCI_OP_HOST);
+
+ ret = usb_add_hcd(hcd, pi->usb_irq.start, IRQF_DISABLED);
+ if (ret < 0)
+ goto err_add_hcd;
+
+ fhci_dfs_create(fhci);
+
+ return 0;
+
+err_add_hcd:
+ free_irq(fhci->timer_irq, hcd);
+err_timer_irq:
+ qe_put_timer(fhci->timer);
+err_get_timer:
+err_gpios:
+ while (--i >= 0) {
+ if (fhci->gpios[i] >= 0)
+ gpio_free(fhci->gpios[i]);
+ }
+err_pram_alloc:
+ usb_put_hcd(hcd);
+ return ret;
+}
+
+static int __devexit fhci_remove(struct device *dev)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct fhci_hcd *fhci = hcd_to_fhci(hcd);
+
+ fhci_dfs_destroy(fhci);
+ usb_remove_hcd(hcd);
+ free_irq(fhci->timer_irq, hcd);
+ qe_put_timer(fhci->timer);
+ qe_muram_free(qe_muram_offset(fhci->pram));
+ usb_put_hcd(hcd);
+
+ return 0;
+}
+
+static int __devinit of_fhci_probe(struct of_device *ofdev,
+ const struct of_device_id *ofid)
+{
+ int ret;
+ struct device *dev = &ofdev->dev;
+ struct fhci_probe_info pi = {
+ .lowspeed_clk = QE_CLK_NONE,
+ .fullspeed_clk = QE_CLK_NONE,
+ };
+ int size;
+ const unsigned long *pram_addr;
+ const char *clk;
+ const u32 *power_budget;
+ struct device_node *np;
+ int i;
+
+ np = of_find_compatible_node(NULL, NULL, "fsl,qe-muram-usb-pram");
+ if (!np) {
+ dev_err(dev, "can't find usb-pram node\n");
+ return -ENOENT;
+ }
+
+ pram_addr = of_get_property(np, "reg", &size);
+ if (!pram_addr || size < sizeof(*pram_addr)) {
+ dev_err(dev, "can't get pram offset\n");
+ of_node_put(np);
+ return -EINVAL;;
+ }
+ pi.pram_addr = *pram_addr;
+ of_node_put(np);
+
+ ret = of_address_to_resource(ofdev->node, 0, &pi.regs);
+ if (ret) {
+ dev_err(dev, "can't get regs\n");
+ return -EINVAL;
+ }
+
+ clk = of_get_property(ofdev->node, "fullspeed-clock", NULL);
+ if (clk) {
+ pi.fullspeed_clk = qe_clock_source(clk);
+ if (pi.fullspeed_clk == QE_CLK_DUMMY) {
+ dev_err(dev, "wrong fullspeed-clock\n");
+ return -EINVAL;
+ }
+ }
+
+ clk = of_get_property(ofdev->node, "lowspeed-clock", NULL);
+ if (clk) {
+ pi.lowspeed_clk = qe_clock_source(clk);
+ if (pi.lowspeed_clk == QE_CLK_DUMMY) {
+ dev_err(dev, "wrong lowspeed-clock\n");
+ return -EINVAL;
+ }
+ }
+
+ if (pi.fullspeed_clk == QE_CLK_NONE &&
+ pi.lowspeed_clk == QE_CLK_NONE) {
+ dev_err(dev, "no clocks specified\n");
+ return -EINVAL;
+ }
+
+ power_budget = of_get_property(ofdev->node, "hub-power-budget", &size);
+ if (power_budget && size == sizeof(*power_budget))
+ pi.power_budget = *power_budget;
+
+ ret = of_irq_to_resource(ofdev->node, 0, &pi.usb_irq);
+ if (ret == NO_IRQ) {
+ dev_err(dev, "can't get usb irq\n");
+ return ret;
+ }
+
+ /* gpios error and sanity checks are in the fhci_probe() */
+ for (i = 0; i < NUM_GPIOS; i++)
+ pi.gpios[i] = of_get_gpio(ofdev->node, i);
+
+ return fhci_probe(dev, &pi);
+}
+
+static int __devexit of_fhci_remove(struct of_device *ofdev)
+{
+ return fhci_remove(&ofdev->dev);
+}
+
+static const struct of_device_id of_fhci_match[] = {
+ { .compatible = "fsl,usb-fhci", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, of_fhci_match);
+
+static struct of_platform_driver of_fhci_driver = {
+ .name = "fsl,usb-fhci",
+ .match_table = of_fhci_match,
+ .probe = of_fhci_probe,
+ .remove = __devexit_p(of_fhci_remove),
+};
+
+static int __init fhci_module_init(void)
+{
+ return of_register_platform_driver(&of_fhci_driver);
+}
+module_init(fhci_module_init);
+
+static void __exit fhci_module_exit(void)
+{
+ of_unregister_platform_driver(&of_fhci_driver);
+}
+module_exit(fhci_module_exit);
+
+MODULE_DESCRIPTION("USB Freescale Host Controller Interface Driver");
+MODULE_AUTHOR("Shlomi Gridish <gridish at freescale.com>, "
+ "Jerry Huang <Chang-Ming.Huang at freescale.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/host/fhci-hub.c b/drivers/usb/host/fhci-hub.c
new file mode 100644
index 0000000..38b5cd3
--- /dev/null
+++ b/drivers/usb/host/fhci-hub.c
@@ -0,0 +1,343 @@
+/*
+ * Freescale QUICC Engine USB Host Controller Driver
+ *
+ * Copyright (c) Freescale Semicondutor, Inc. 2006.
+ * Shlomi Gridish <gridish at freescale.com>
+ * Jerry Huang <Chang-Ming.Huang at freescale.com>
+ * Copyright (c) Logic Product Development, Inc. 2007
+ * Peter Barada <peterb at logicpd.com>
+ * Copyright (c) MontaVista Software, Inc. 2008.
+ * Anton Vorontsov <avorontsov at ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+/* Virtual root hub specific descriptor */
+static u8 root_hub_des[] = {
+ 0x09, /* blength */
+ 0x29, /* bDescriptorType;hub-descriptor */
+ 0x01, /* bNbrPorts */
+ 0x00, /* wHubCharacteristics */
+ 0x00,
+ 0x01, /* bPwrOn2pwrGood;2ms */
+ 0x00, /* bHubContrCurrent;0mA */
+ 0x00, /* DeviceRemoveable */
+ 0xff /* PortPwrCtrlMask */
+};
+
+static void fhci_start_sof_timer(struct fhci_hcd *fhci)
+{
+ struct fhci_usb *usb = fhci->usb_lld;
+ u8 mode;
+
+ /* clear frame_n */
+ fhci->pram->frame_num = 0;
+
+#ifdef CONFIG_FHCI_HAS_EOP_MISSING_BUG
+ usb->eop_missing_bug_indicator = 0;
+#endif
+
+ fhci->regs->usb_sof_tmr = 0;
+ mode = fhci->regs->usb_mod;
+ mode |= USB_MODE_SFTE;
+ fhci->regs->usb_mod = mode;
+
+ qe_reset_ref_timer_16(fhci->timer, 1000000, usb->max_frame_usage);
+}
+
+static void fhci_stop_sof_timer(struct fhci_hcd *fhci)
+{
+ u8 mode;
+
+ mode = fhci->regs->usb_mod;
+ mode &= ~USB_MODE_SFTE;
+ fhci->regs->usb_mod = mode;
+
+ qe_stop_timer(fhci->timer);
+}
+
+static u16 get_sof_timer_count(struct fhci_usb *usb)
+{
+ return (u16) (usb->fhci->regs->usb_sof_tmr / 12);
+}
+
+void config_transceiver(struct fhci_hcd *fhci, enum fhci_op_mode mode)
+{
+ fhci_dbg(fhci, "%s: %d\n", __func__, mode);
+
+ switch (mode) {
+ case FHCI_OP_HOST:
+ if (fhci->gpios[GPIO_SPEED] >= 0)
+ gpio_set_value(fhci->gpios[GPIO_SPEED], 1);
+ if (fhci->gpios[GPIO_SUSPN] >= 0)
+ gpio_set_value(fhci->gpios[GPIO_SUSPN], 1);
+ if (fhci->gpios[GPIO_SPEED] >= 0 ||
+ fhci->gpios[GPIO_SUSPN] >= 0)
+ msleep(100);
+ break;
+ case FHCI_OP_DISCONNECT:
+ if (fhci->gpios[GPIO_SPEED] >= 0)
+ gpio_set_value(fhci->gpios[GPIO_SPEED], 1);
+ if (fhci->gpios[GPIO_SUSPN] >= 0)
+ gpio_set_value(fhci->gpios[GPIO_SUSPN], 1);
+ break;
+ case FHCI_OP_POWER_ON:
+ /* vcc on */
+ if (fhci->gpios[GPIO_SUSPN] >= 0) {
+ gpio_set_value(fhci->gpios[GPIO_SUSPN], 0);
+ msleep(100);
+ }
+ break;
+ case FHCI_OP_POWER_OFF:
+ /* vcc off */
+ if (fhci->gpios[GPIO_SUSPN] >= 0)
+ gpio_set_value(fhci->gpios[GPIO_SUSPN], 1);
+ break;
+ default:
+ WARN_ON(1);
+ break;
+ }
+}
+
+/* disable the USB port by clearing the EN bit in the USBMOD register */
+void usb_port_disable(struct fhci_hcd *fhci)
+{
+ struct fhci_usb *usb = (struct fhci_usb *)fhci->usb_lld;
+ enum fhci_port_status port_status;
+
+ fhci_stop_sof_timer(fhci);
+
+ flush_all_transmissions(usb);
+
+ config_transceiver(fhci, FHCI_OP_POWER_OFF);
+
+ fhci_usb_disable_interrupt((struct fhci_usb *)fhci->usb_lld);
+ port_status = usb->port_status;
+ usb->port_status = FHCI_PORT_DISABLED;
+
+ /* Enable IDLE since we want to know if something comes along */
+ usb->saved_msk |= USB_E_IDLE_MASK;
+ usb->fhci->regs->usb_mask = usb->saved_msk;
+
+ /* check if during the disconnection process attached new device */
+ if (port_status == FHCI_PORT_WAITING)
+ device_connected_interrupt(fhci);
+ usb->vroot_hub->port.wPortStatus &= ~USB_PORT_STAT_ENABLE;
+ fhci_usb_enable_interrupt((struct fhci_usb *)fhci->usb_lld);
+}
+
+/* enable the USB port by setting the EN bit in the USBMOD register */
+void usb_port_enable(void *lld)
+{
+ struct fhci_usb *usb = (struct fhci_usb *)lld;
+ struct fhci_hcd *fhci = usb->fhci;
+
+ if ((usb->port_status != FHCI_PORT_FULL) &&
+ (usb->port_status != FHCI_PORT_LOW))
+ fhci_start_sof_timer(fhci);
+ udelay(5000);
+ usb->vroot_hub->port.wPortStatus |= USB_PORT_STAT_ENABLE;
+}
+
+static void io_port_generate_reset(struct fhci_hcd *fhci)
+{
+ gpio_direction_output(fhci->gpios[GPIO_USBOE], 0);
+ gpio_direction_output(fhci->gpios[GPIO_USBTP], 0);
+ gpio_direction_output(fhci->gpios[GPIO_USBTN], 0);
+
+ udelay(5000);
+
+ gpio_set_dedicated(fhci->gpios[GPIO_USBOE], 0);
+ gpio_set_dedicated(fhci->gpios[GPIO_USBTP], 0);
+ gpio_set_dedicated(fhci->gpios[GPIO_USBTN], 0);
+}
+
+/* generate the RESET condition on the bus */
+void usb_port_reset(void *lld)
+{
+ struct fhci_usb *usb = (struct fhci_usb *)lld;
+ struct fhci_hcd *fhci = usb->fhci;
+ u8 mode;
+ u16 mask;
+
+ fhci_stop_sof_timer(fhci);
+ /* disable the USB controller */
+ mode = fhci->regs->usb_mod;
+ fhci->regs->usb_mod = mode & (~USB_MODE_EN);
+
+ /* disable idle interrupts */
+ mask = fhci->regs->usb_mask;
+ fhci->regs->usb_mask = mask & (~USB_E_IDLE_MASK);
+
+ io_port_generate_reset(fhci);
+
+ /* enable interrupt on this endpoint */
+ fhci->regs->usb_mask = mask;
+
+ /* enable the USB controller */
+ mode = fhci->regs->usb_mod;
+ fhci->regs->usb_mod = (mode | USB_MODE_EN);
+ fhci_start_sof_timer(fhci);
+}
+
+static int fhci_hub_status_data(struct usb_hcd *hcd, char *buf)
+{
+ struct fhci_hcd *fhci = hcd_to_fhci(hcd);
+ int ret = 0;
+ char data;
+
+ data = (fhci->vroot_hub->hub.wHubChange &
+ HUB_CHANGE_LOCAL_POWER) ? (char)1 : (char)0;
+ ret = data;
+
+ if (fhci->vroot_hub->port.wPortChange & (USB_PORT_STAT_C_CONNECTION |
+ USB_PORT_STAT_C_ENABLE | USB_PORT_STAT_C_SUSPEND |
+ USB_PORT_STAT_C_RESET | USB_PORT_STAT_C_OVERCURRENT)) {
+ data |= 1 << 1;
+ ret += data;
+ }
+
+ if (ret > 0) {
+ *(char *)buf = data;
+ return 1;
+ }
+
+ return 0;
+}
+
+static int fhci_hub_control(struct usb_hcd *hcd,
+ u16 typeReq,
+ u16 wValue, u16 wIndex, char *buf, u16 wLength)
+{
+ struct fhci_hcd *fhci = hcd_to_fhci(hcd);
+ int retval = 0;
+ int len = 0;
+ struct usb_hub_status *hub_status;
+ struct usb_port_status *port_status;
+
+ spin_lock(&fhci->lock);
+ switch (typeReq) {
+ case ClearHubFeature:
+ switch (wValue) {
+ case C_HUB_LOCAL_POWER:
+ case C_HUB_OVER_CURRENT:
+ break;
+ default:
+ goto error;
+ }
+ break;
+ case ClearPortFeature:
+ fhci->vroot_hub->feature &= (1 << wValue);
+
+ switch (wValue) {
+ case USB_PORT_FEAT_ENABLE:
+ fhci->vroot_hub->port.wPortStatus &=
+ ~USB_PORT_STAT_ENABLE;
+ usb_port_disable(fhci);
+ break;
+ case USB_PORT_FEAT_C_ENABLE:
+ fhci->vroot_hub->port.wPortChange &=
+ ~USB_PORT_STAT_C_ENABLE;
+ break;
+ case USB_PORT_FEAT_SUSPEND:
+ fhci->vroot_hub->port.wPortStatus &=
+ ~USB_PORT_STAT_SUSPEND;
+ fhci_stop_sof_timer(fhci);
+ break;
+ case USB_PORT_FEAT_C_SUSPEND:
+ fhci->vroot_hub->port.wPortChange &=
+ ~USB_PORT_STAT_C_SUSPEND;
+ break;
+ case USB_PORT_FEAT_POWER:
+ fhci->vroot_hub->port.wPortStatus &=
+ ~USB_PORT_STAT_POWER;
+ config_transceiver(fhci, FHCI_OP_POWER_OFF);
+ break;
+ case USB_PORT_FEAT_C_CONNECTION:
+ fhci->vroot_hub->port.wPortChange &=
+ ~USB_PORT_STAT_C_CONNECTION;
+ break;
+ case USB_PORT_FEAT_C_OVER_CURRENT:
+ fhci->vroot_hub->port.wPortChange &=
+ ~USB_PORT_STAT_C_OVERCURRENT;
+ break;
+ case USB_PORT_FEAT_C_RESET:
+ fhci->vroot_hub->port.wPortChange &=
+ ~USB_PORT_STAT_C_RESET;
+ default:
+ goto error;
+ }
+ break;
+ case GetHubDescriptor:
+ memcpy(buf, root_hub_des, sizeof(root_hub_des));
+ buf[3] = 0x11; /* per-port power, no ovrcrnt */
+ len = (buf[0] < wLength) ? buf[0] : wLength;
+ break;
+ case GetHubStatus:
+ hub_status = (struct usb_hub_status *)buf;
+ hub_status->wHubStatus =
+ cpu_to_le16(fhci->vroot_hub->hub.wHubStatus);
+ hub_status->wHubChange =
+ cpu_to_le16(fhci->vroot_hub->hub.wHubChange);
+ len = 4;
+ break;
+ case GetPortStatus:
+ port_status = (struct usb_port_status *)buf;
+ port_status->wPortStatus =
+ cpu_to_le16(fhci->vroot_hub->port.wPortStatus);
+ port_status->wPortChange =
+ cpu_to_le16(fhci->vroot_hub->port.wPortChange);
+ len = 4;
+ break;
+ case SetHubFeature:
+ switch (wValue) {
+ case C_HUB_OVER_CURRENT:
+ case C_HUB_LOCAL_POWER:
+ break;
+ default:
+ goto error;
+ }
+ break;
+ case SetPortFeature:
+ fhci->vroot_hub->feature |= (1 << wValue);
+
+ switch (wValue) {
+ case USB_PORT_FEAT_ENABLE:
+ fhci->vroot_hub->port.wPortStatus |=
+ USB_PORT_STAT_ENABLE;
+ usb_port_enable(fhci->usb_lld);
+ break;
+ case USB_PORT_FEAT_SUSPEND:
+ fhci->vroot_hub->port.wPortStatus |=
+ USB_PORT_STAT_SUSPEND;
+ fhci_stop_sof_timer(fhci);
+ break;
+ case USB_PORT_FEAT_RESET:
+ fhci->vroot_hub->port.wPortStatus |=
+ USB_PORT_STAT_RESET;
+ usb_port_reset(fhci->usb_lld);
+ fhci->vroot_hub->port.wPortStatus |=
+ USB_PORT_STAT_ENABLE;
+ fhci->vroot_hub->port.wPortStatus &=
+ ~USB_PORT_STAT_RESET;
+ break;
+ case USB_PORT_FEAT_POWER:
+ fhci->vroot_hub->port.wPortStatus |=
+ USB_PORT_STAT_POWER;
+ config_transceiver(fhci, FHCI_OP_POWER_ON);
+ break;
+ default:
+ goto error;
+ }
+ break;
+ default:
+error:
+ retval = -EPIPE;
+ }
+
+ spin_unlock(&fhci->lock);
+ return retval;
+}
diff --git a/drivers/usb/host/fhci-mem.c b/drivers/usb/host/fhci-mem.c
new file mode 100644
index 0000000..b9e51bc
--- /dev/null
+++ b/drivers/usb/host/fhci-mem.c
@@ -0,0 +1,95 @@
+/*
+ * Freescale QUICC Engine USB Host Controller Driver
+ *
+ * Copyright (c) Freescale Semicondutor, Inc. 2006.
+ * Shlomi Gridish <gridish at freescale.com>
+ * Jerry Huang <Chang-Ming.Huang at freescale.com>
+ * Copyright (c) Logic Product Development, Inc. 2007
+ * Peter Barada <peterb at logicpd.com>
+ * Copyright (c) MontaVista Software, Inc. 2008.
+ * Anton Vorontsov <avorontsov at ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+static void init_td(struct td *td)
+{
+ memset(td, 0, sizeof(*td));
+ INIT_LIST_HEAD(&td->node);
+ INIT_LIST_HEAD(&td->frame_lh);
+}
+
+static void init_ed(struct ed *ed)
+{
+ memset(ed, 0, sizeof(*ed));
+ INIT_LIST_HEAD(&ed->td_list);
+ INIT_LIST_HEAD(&ed->node);
+}
+
+static struct td *get_empty_td(struct fhci_hcd *fhci)
+{
+ struct td *td;
+
+ if (!list_empty(&fhci->empty_tds)) {
+ td = list_entry(fhci->empty_tds.next, struct td, node);
+ list_del(fhci->empty_tds.next);
+ } else {
+ td = kmalloc(sizeof(*td), GFP_ATOMIC);
+ if (!td)
+ fhci_err(fhci, "No memory to allocate to TD\n");
+ else
+ init_td(td);
+ }
+
+ return td;
+}
+
+static void recycle_empty_td(struct fhci_hcd *fhci, struct td *td)
+{
+ init_td(td);
+ list_add(&td->node, &fhci->empty_tds);
+}
+
+static struct ed *get_empty_ed(struct fhci_hcd *fhci)
+{
+ struct ed *ed;
+
+ if (!list_empty(&fhci->empty_eds)) {
+ ed = list_entry(fhci->empty_eds.next, struct ed, node);
+ list_del(fhci->empty_eds.next);
+ } else {
+ ed = kmalloc(sizeof(*ed), GFP_ATOMIC);
+ if (!ed)
+ fhci_err(fhci, "No memory to allocate to ED\n");
+ else
+ init_ed(ed);
+ }
+
+ return ed;
+}
+
+static void recycle_empty_ed(struct fhci_hcd *fhci, struct ed *ed)
+{
+ init_ed(ed);
+ list_add(&ed->node, &fhci->empty_eds);
+}
+
+static struct td *td_alloc_fill(struct fhci_hcd *fhci, struct urb *urb,
+ struct urb_priv *urb_priv, struct ed *ed, u16 index,
+ enum fhci_ta_type type, int toggle, u8 *data, u32 len,
+ u16 interval, u16 start_frame, bool ioc)
+{
+ struct td *td = get_empty_td(fhci);
+
+ if (!td)
+ return NULL;
+
+ td_fill(urb, ed, td, index, type, toggle, data, len, interval,
+ start_frame, ioc);
+ urb_priv->tds[index] = td;
+
+ return td;
+}
diff --git a/drivers/usb/host/fhci-q.c b/drivers/usb/host/fhci-q.c
new file mode 100644
index 0000000..459c5e2
--- /dev/null
+++ b/drivers/usb/host/fhci-q.c
@@ -0,0 +1,495 @@
+/*
+ * Freescale QUICC Engine USB Host Controller Driver
+ *
+ * Copyright (c) Freescale Semicondutor, Inc. 2006.
+ * Shlomi Gridish <gridish at freescale.com>
+ * Jerry Huang <Chang-Ming.Huang at freescale.com>
+ * Copyright (c) Logic Product Development, Inc. 2007
+ * Peter Barada <peterb at logicpd.com>
+ * Copyright (c) MontaVista Software, Inc. 2008.
+ * Anton Vorontsov <avorontsov at ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+static void td_fill(struct urb *urb, struct ed *ed, struct td *td,
+ u16 index, enum fhci_ta_type type, int toggle, u8 *data,
+ u32 len, u16 interval, u16 start_frame, bool ioc)
+{
+ td->urb = urb;
+ td->ed = ed;
+ td->type = type;
+ td->toggle = toggle;
+ td->data = data;
+ td->len = len;
+ td->iso_index = index;
+ td->interval = interval;
+ td->start_frame = start_frame;
+ td->ioc = ioc;
+ td->status = USB_TD_OK;
+}
+
+static void add_td_to_frame(struct fhci_time_frame *frame, struct td *td)
+{
+ list_add_tail(&td->frame_lh, &frame->tds_list);
+}
+
+static void add_tds_to_ed(struct ed *ed, struct td **td_list, int number)
+{
+ int i;
+
+ for (i = 0; i < number; i++) {
+ struct td *td = td_list[i];
+ list_add_tail(&td->node, &ed->td_list);
+ }
+ if (ed->td_head == NULL)
+ ed->td_head = td_list[0];
+}
+
+static struct td *peek_td_from_ed(struct ed *ed)
+{
+ struct td *td;
+
+ if (!list_empty(&ed->td_list))
+ td = list_entry(ed->td_list.next, struct td, node);
+ else
+ td = NULL;
+
+ return td;
+}
+
+static struct td *remove_td_from_frame(struct fhci_time_frame *frame)
+{
+ struct td *td;
+
+ if (!list_empty(&frame->tds_list)) {
+ td = list_entry(frame->tds_list.next, struct td, frame_lh);
+ list_del_init(frame->tds_list.next);
+ } else
+ td = NULL;
+
+ return td;
+}
+
+static struct td *peek_td_from_frame(struct fhci_time_frame *frame)
+{
+ struct td *td;
+
+ if (!list_empty(&frame->tds_list))
+ td = list_entry(frame->tds_list.next, struct td, frame_lh);
+ else
+ td = NULL;
+
+ return td;
+}
+static struct td *remove_td_from_ed(struct ed *ed)
+{
+ struct td *td;
+
+ if (!list_empty(&ed->td_list)) {
+ td = list_entry(ed->td_list.next, struct td, node);
+ list_del_init(ed->td_list.next);
+
+ /* if this TD was the ED's head, find next TD */
+ if (!list_empty(&ed->td_list))
+ ed->td_head = list_entry(ed->td_list.next, struct td,
+ node);
+ else
+ ed->td_head = NULL;
+ } else
+ td = NULL;
+
+ return td;
+}
+
+static struct td *remove_td_from_done_list(struct fhci_controller_list *p_list)
+{
+ struct td *td;
+
+ if (!list_empty(&p_list->done_list)) {
+ td = list_entry(p_list->done_list.next, struct td, node);
+ list_del_init(p_list->done_list.next);
+ } else
+ td = NULL;
+
+ return td;
+}
+
+static void move_td_from_ed_to_done_list(struct fhci_usb *usb, struct ed *ed)
+{
+ struct td *td;
+
+ td = ed->td_head;
+ list_del_init(&td->node);
+
+ /* If this TD was the ED's head,find next TD */
+ if (!list_empty(&ed->td_list))
+ ed->td_head = list_entry(ed->td_list.next, struct td, node);
+ else {
+ ed->td_head = NULL;
+ ed->state = FHCI_ED_SKIP;
+ }
+ ed->toggle_carry = td->toggle;
+ list_add_tail(&td->node, &usb->hc_list->done_list);
+ if (td->ioc)
+ usb->transfer_confirm(usb->fhci);
+}
+
+/* free done FHCI URB resource such as ED and TD*/
+static void free_urb_priv(struct fhci_hcd *fhci, struct urb *urb)
+{
+ int i;
+ struct urb_priv *urb_priv = urb->hcpriv;
+ struct ed *ed = urb_priv->ed;
+
+ for (i = 0; i < urb_priv->num_of_tds; i++) {
+ list_del_init(&urb_priv->tds[i]->node);
+ recycle_empty_td(fhci, urb_priv->tds[i]);
+ }
+
+ /* if this TD was the ED's head,find the next TD */
+ if (!list_empty(&ed->td_list))
+ ed->td_head = list_entry(ed->td_list.next, struct td, node);
+ else
+ ed->td_head = NULL;
+
+ kfree(urb_priv->tds);
+ kfree(urb_priv);
+ urb->hcpriv = NULL;
+
+ /* if this TD was the ED's head,find next TD */
+ if (ed->td_head == NULL)
+ list_del_init(&ed->node);
+ fhci->active_urbs--;
+}
+
+/* this routine called to complete and free done URB */
+static void urb_complete_free(struct fhci_hcd *fhci, struct urb *urb)
+{
+ free_urb_priv(fhci, urb);
+
+ if (urb->status == -EINPROGRESS) {
+ if (urb->actual_length != urb->transfer_buffer_length &&
+ urb->transfer_flags & URB_SHORT_NOT_OK)
+ urb->status = -EREMOTEIO;
+ else
+ urb->status = 0;
+ }
+ spin_unlock(&fhci->lock);
+ usb_hcd_giveback_urb(fhci_to_hcd(fhci), urb, urb->status);
+ spin_lock(&fhci->lock);
+}
+
+/*
+ * caculate transfer length/stats and update the urb
+ * Precondition: irqsafe(only for urb-?status locking)
+ */
+static void done_td(struct urb *urb, struct td *td)
+{
+ struct ed *ed = td->ed;
+ u32 cc = td->status;
+
+ /* ISO...drivers see per-TD length/status */
+ if (ed->mode == FHCI_TF_ISO) {
+ u32 len;
+ if (!(urb->transfer_flags & URB_SHORT_NOT_OK &&
+ cc == USB_TD_RX_DATA_UNDERUN))
+ cc = USB_TD_OK;
+
+ if (usb_pipeout(urb->pipe))
+ len = urb->iso_frame_desc[td->iso_index].length;
+ else
+ len = td->actual_len;
+
+ urb->actual_length += len;
+ urb->iso_frame_desc[td->iso_index].actual_length = len;
+ urb->iso_frame_desc[td->iso_index].status =
+ status_to_error(cc);
+ }
+
+ /* BULK,INT,CONTROL... drivers see aggregate length/status,
+ * except that "setup" bytes aren't counted and "short" transfers
+ * might not be reported as errors.
+ */
+ else {
+ if (td->error_cnt >= 3)
+ urb->error_count = 3;
+
+ /* control endpoint only have soft stalls */
+
+ /* update packet status if needed(short may be ok) */
+ if (!(urb->transfer_flags & URB_SHORT_NOT_OK) &&
+ cc == USB_TD_RX_DATA_UNDERUN) {
+ ed->state = FHCI_ED_OPER;
+ cc = USB_TD_OK;
+ }
+ if (cc != USB_TD_OK) {
+ if (urb->status == -EINPROGRESS)
+ urb->status = status_to_error(cc);
+ }
+
+ /* count all non-empty packets except control SETUP packet */
+ if (td->type != FHCI_TA_SETUP || td->iso_index != 0)
+ urb->actual_length += td->actual_len;
+ }
+}
+
+/* there are some pedning request to unlink */
+static void del_ed_list(struct fhci_hcd *fhci, struct ed *ed)
+{
+ struct td *td = peek_td_from_ed(ed);
+ struct urb *urb = td->urb;
+ struct urb_priv *urb_priv = urb->hcpriv;
+
+ if (urb_priv->state == URB_DEL) {
+ td = remove_td_from_ed(ed);
+ /* HC may have partly processed this TD */
+ if (td->status != USB_TD_INPROGRESS)
+ done_td(urb, td);
+
+ /* URB is done;clean up */
+ if (++(urb_priv->tds_cnt) == urb_priv->num_of_tds)
+ urb_complete_free(fhci, urb);
+ }
+}
+
+/*
+ * Process normal completions(error or sucess) and clean the schedule.
+ *
+ * This is the main path for handing urbs back to drivers. The only other patth
+ * is process_del_list(),which unlinks URBs by scanning EDs,instead of scanning
+ * the (re-reversed) done list as this does.
+ */
+static void process_done_list(unsigned long data)
+{
+ struct urb *urb;
+ struct ed *ed;
+ struct td *td;
+ struct urb_priv *urb_priv;
+ struct fhci_hcd *fhci = (struct fhci_hcd *)data;
+
+ spin_lock(&fhci->lock);
+ td = remove_td_from_done_list(fhci->hc_list);
+ while (td != NULL) {
+ urb = td->urb;
+ urb_priv = urb->hcpriv;
+ ed = td->ed;
+
+ /* update URB's length and status from TD */
+ done_td(urb, td);
+ urb_priv->tds_cnt++;
+
+ /*
+ * if all this urb's TDs are done, call complete()
+ * Interrupt transfers are the onley special case:
+ * they are reissued,until "deleted" by usb_unlink_urb
+ * (real work done in a SOF intr, by process_del_list)
+ */
+ if (urb_priv->tds_cnt == urb_priv->num_of_tds) {
+ urb_complete_free(fhci, urb);
+ } else if (urb_priv->state == URB_DEL &&
+ ed->state == FHCI_ED_SKIP) {
+ del_ed_list(fhci, ed);
+ ed->state = FHCI_ED_OPER;
+ } else if (ed->state == FHCI_ED_HALTED) {
+ urb_priv->state = URB_DEL;
+ ed->state = FHCI_ED_URB_DEL;
+ del_ed_list(fhci, ed);
+ ed->state = FHCI_ED_OPER;
+ }
+
+ td = remove_td_from_done_list(fhci->hc_list);
+ }
+ spin_unlock(&fhci->lock);
+}
+
+/*
+ * adds urb to the endpoint descriptor list
+ * arguments:
+ * fhci data structure for the Low level host controller
+ * ep USB Host endpoint data structure
+ * urb USB request block data structure
+ */
+static void queue_urb(struct fhci_hcd *fhci, struct urb *urb)
+{
+ struct ed *ed = urb->ep->hcpriv;
+ struct urb_priv *urb_priv = urb->hcpriv;
+ u32 data_len = urb->transfer_buffer_length;
+ int urb_state = 0;
+ int toggle = 0;
+ struct td *td;
+ u8 *data;
+ u16 cnt = 0;
+
+ if (ed == NULL) {
+ ed = get_empty_ed(fhci);
+ ed->dev_addr = (u8) usb_pipedevice(urb->pipe);
+ ed->ep_addr = (u8) usb_pipeendpoint(urb->pipe);
+ switch (usb_pipetype(urb->pipe)) {
+ case PIPE_CONTROL:
+ ed->mode = FHCI_TF_CTRL;
+ break;
+ case PIPE_BULK:
+ ed->mode = FHCI_TF_BULK;
+ break;
+ case PIPE_INTERRUPT:
+ ed->mode = FHCI_TF_INTR;
+ break;
+ case PIPE_ISOCHRONOUS:
+ ed->mode = FHCI_TF_ISO;
+ break;
+ default:
+ break;
+ }
+ ed->speed = (urb->dev->speed == USB_SPEED_LOW) ?
+ FHCI_LOW_SPEED : FHCI_FULL_SPEED;
+ ed->max_pkt_size = usb_maxpacket(urb->dev,
+ urb->pipe, usb_pipeout(urb->pipe));
+ urb->ep->hcpriv = ed;
+ }
+
+ /* for ISO transfer calculate start frame index */
+ if (ed->mode == FHCI_TF_ISO && urb->transfer_flags & URB_ISO_ASAP)
+ urb->start_frame = ed->td_head ? ed->last_iso + 1 :
+ get_frame_num(fhci);
+
+ /*
+ * OHCI handles the DATA toggle itself,we just use the USB
+ * toggle bits
+ */
+ if (usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
+ usb_pipeout(urb->pipe)))
+ toggle = USB_TD_TOGGLE_CARRY;
+ else {
+ toggle = USB_TD_TOGGLE_DATA0;
+ usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
+ usb_pipeout(urb->pipe), 1);
+ }
+
+ urb_priv->tds_cnt = 0;
+ urb_priv->ed = ed;
+ if (data_len > 0)
+ data = urb->transfer_buffer;
+ else
+ data = 0;
+
+ switch (ed->mode) {
+ case FHCI_TF_BULK:
+ if (urb->transfer_flags & URB_ZERO_PACKET &&
+ urb->transfer_buffer_length > 0 &&
+ ((urb->transfer_buffer_length %
+ usb_maxpacket(urb->dev, urb->pipe,
+ usb_pipeout(urb->pipe))) == 0))
+ urb_state = US_BULK0;
+ while (data_len > 4096) {
+ td = td_alloc_fill(fhci, urb, urb_priv, ed, cnt,
+ usb_pipeout(urb->pipe) ? FHCI_TA_OUT :
+ FHCI_TA_IN,
+ cnt ? USB_TD_TOGGLE_CARRY :
+ toggle,
+ data, 4096, 0, 0, true);
+ data += 4096;
+ data_len -= 4096;
+ cnt++;
+ }
+
+ td = td_alloc_fill(fhci, urb, urb_priv, ed, cnt,
+ usb_pipeout(urb->pipe) ? FHCI_TA_OUT : FHCI_TA_IN,
+ cnt ? USB_TD_TOGGLE_CARRY : toggle,
+ data, data_len, 0, 0, true);
+ cnt++;
+
+ if (urb->transfer_flags & URB_ZERO_PACKET &&
+ cnt < urb_priv->num_of_tds) {
+ td = td_alloc_fill(fhci, urb, urb_priv, ed, cnt,
+ usb_pipeout(urb->pipe) ? FHCI_TA_OUT :
+ FHCI_TA_IN,
+ USB_TD_TOGGLE_CARRY, NULL, 0, 0, 0, true);
+ cnt++;
+ }
+ break;
+ case FHCI_TF_INTR:
+ urb->start_frame = get_frame_num(fhci) + 1;
+ td = td_alloc_fill(fhci, urb, urb_priv, ed, cnt++,
+ usb_pipeout(urb->pipe) ? FHCI_TA_OUT : FHCI_TA_IN,
+ USB_TD_TOGGLE_DATA0, data, data_len,
+ urb->interval, urb->start_frame, true);
+ break;
+ case FHCI_TF_CTRL:
+ ed->dev_addr = usb_pipedevice(urb->pipe);
+ ed->max_pkt_size = usb_maxpacket(urb->dev, urb->pipe,
+ usb_pipeout(urb->pipe));
+ td = td_alloc_fill(fhci, urb, urb_priv, ed, cnt++,
+ FHCI_TA_SETUP, USB_TD_TOGGLE_DATA0, urb->setup_packet,
+ 8, 0, 0, true);
+
+ if (data_len > 0) {
+ td = td_alloc_fill(fhci, urb, urb_priv, ed, cnt++,
+ usb_pipeout(urb->pipe) ? FHCI_TA_OUT :
+ FHCI_TA_IN,
+ USB_TD_TOGGLE_DATA1, data, data_len, 0, 0,
+ true);
+ }
+ td = td_alloc_fill(fhci, urb, urb_priv, ed, cnt++,
+ usb_pipeout(urb->pipe) ? FHCI_TA_IN : FHCI_TA_OUT,
+ USB_TD_TOGGLE_DATA1, data, 0, 0, 0, true);
+ urb_state = US_CTRL_SETUP;
+ break;
+ case FHCI_TF_ISO:
+ for (cnt = 0; cnt < urb->number_of_packets; cnt++) {
+ u16 frame = (u16) urb->start_frame;
+
+ /*
+ * FIXME scheduling should handle frame counter
+ * roll-around ... exotic case (and OHCI has
+ * a 2^16 iso range, vs other HCs max of 2^10)
+ */
+ frame += cnt * urb->interval;
+ frame &= 0x07ff;
+ td = td_alloc_fill(fhci, urb, urb_priv, ed, cnt,
+ usb_pipeout(urb->pipe) ? FHCI_TA_OUT :
+ FHCI_TA_IN,
+ USB_TD_TOGGLE_DATA0,
+ data + urb->iso_frame_desc[cnt].offset,
+ urb->iso_frame_desc[cnt].length,
+ urb->interval, frame, true);
+ }
+ default:
+ break;
+ }
+
+ /*
+ * set the state of URB
+ * control pipe:3 states -- setup,data,status
+ * interrupt and bulk pipe:1 state -- data
+ */
+ urb->pipe &= ~0x1f;
+ urb->pipe |= urb_state & 0x1f;
+
+ urb_priv->state = URB_INPROGRESS;
+
+ if (!ed->td_head) {
+ ed->state = FHCI_ED_OPER;
+ switch (ed->mode) {
+ case FHCI_TF_CTRL:
+ list_add(&ed->node, &fhci->hc_list->ctrl_list);
+ break;
+ case FHCI_TF_BULK:
+ list_add(&ed->node, &fhci->hc_list->bulk_list);
+ break;
+ case FHCI_TF_INTR:
+ list_add(&ed->node, &fhci->hc_list->intr_list);
+ break;
+ case FHCI_TF_ISO:
+ list_add(&ed->node, &fhci->hc_list->iso_list);
+ default:
+ break;
+ }
+ }
+
+ add_tds_to_ed(ed, urb_priv->tds, urb_priv->num_of_tds);
+ fhci->active_urbs++;
+}
diff --git a/drivers/usb/host/fhci-tds.c b/drivers/usb/host/fhci-tds.c
new file mode 100644
index 0000000..88922f8
--- /dev/null
+++ b/drivers/usb/host/fhci-tds.c
@@ -0,0 +1,628 @@
+/*
+ * Freescale QUICC Engine USB Host Controller Driver
+ *
+ * Copyright (c) Freescale Semicondutor, Inc. 2006.
+ * Shlomi Gridish <gridish at freescale.com>
+ * Jerry Huang <Chang-Ming.Huang at freescale.com>
+ * Copyright (c) Logic Product Development, Inc. 2007
+ * Peter Barada <peterb at logicpd.com>
+ * Copyright (c) MontaVista Software, Inc. 2008.
+ * Anton Vorontsov <avorontsov at ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#define DUMMY_BD_BUFFER 0xdeadbeef
+#define DUMMY2_BD_BUFFER 0xbaadf00d
+
+/* Transaction Descriptors bits */
+#define TD_R 0x8000 /* ready bit */
+#define TD_W 0x2000 /* wrap bit */
+#define TD_I 0x1000 /* interrupt on completion */
+#define TD_L 0x0800 /* last */
+#define TD_TC 0x0400 /* transmit CRC */
+#define TD_CNF 0x0200 /* CNF - Must be always 1 */
+#define TD_LSP 0x0100 /* Low-speed transaction */
+#define TD_PID 0x00c0 /* packet id */
+#define TD_RXER 0x0020 /* Rx error or not */
+
+#define TD_NAK 0x0010 /* No ack. */
+#define TD_STAL 0x0008 /* Stall recieved */
+#define TD_TO 0x0004 /* time out */
+#define TD_UN 0x0002 /* underrun */
+#define TD_NO 0x0010 /* Rx Non Octet Aligned Packet */
+#define TD_AB 0x0008 /* Frame Aborted */
+#define TD_CR 0x0004 /* CRC Error */
+#define TD_OV 0x0002 /* Overrun */
+#define TD_BOV 0x0001 /* Buffer Overrun */
+
+#define TD_ERRORS (TD_NAK | TD_STAL | TD_TO | TD_UN | \
+ TD_NO | TD_AB | TD_CR | TD_OV | TD_BOV)
+
+#define TD_PID_DATA0 0x0080 /* Data 0 toggle */
+#define TD_PID_DATA1 0x00c0 /* Data 1 toggle */
+#define TD_PID_TOGGLE 0x00c0 /* Data 0/1 toggle mask */
+
+#define TD_TOK_SETUP 0x0000
+#define TD_TOK_OUT 0x4000
+#define TD_TOK_IN 0x8000
+#define TD_ISO 0x1000
+#define TD_ENDP 0x0780
+#define TD_ADDR 0x007f
+
+#define TD_ENDP_SHIFT 7
+
+struct usb_td {
+ u16 status;
+ u16 length;
+ u32 buf_ptr;
+ u16 extra;
+ u16 reserved;
+};
+
+struct endpoint {
+ /* Pointer to ep parameter RAM */
+ struct fhci_ep_pram *ep_pram_ptr;
+
+ /* Host transactions */
+ struct usb_td *td_base; /* first TD in the ring */
+ struct usb_td *conf_td; /* next TD for confirm after transac */
+ struct usb_td *empty_td;/* next TD for new transaction request */
+ void *empty_frame_Q; /* Empty frames list to use */
+ void *conf_frame_Q; /* frames passed to TDs,waiting for tx */
+ void *dummy_packets_Q; /* dummy packets for the CRC overun */
+
+ bool already_pushed_dummy_bd;
+};
+
+struct usb_td *next_bd(struct usb_td *base, struct usb_td *td, u16 status)
+{
+ if (status & TD_W)
+ return base;
+ else
+ return ++td;
+}
+
+static void push_dummy_bd(struct endpoint *ep)
+{
+ if (ep->already_pushed_dummy_bd == false) {
+ u16 td_status = ep->empty_td->status;
+
+ ep->empty_td->buf_ptr = DUMMY_BD_BUFFER;
+ /* get the next TD in the ring */
+ ep->empty_td = next_bd(ep->td_base, ep->empty_td, td_status);
+ ep->already_pushed_dummy_bd = true;
+ }
+}
+
+/* destroy an USB endpoint */
+void endpoint_zero_free(struct fhci_usb *usb)
+{
+ struct endpoint *ep;
+ int size;
+
+ ep = usb->ep0;
+ if (ep) {
+ if (ep->td_base)
+ qe_muram_free(qe_muram_offset(ep->td_base));
+
+ if (ep->conf_frame_Q) {
+ size = cq_howmany(ep->conf_frame_Q);
+ for (; size; size--) {
+ struct packet *pkt = cq_get(ep->conf_frame_Q);
+
+ kfree(pkt);
+ }
+ cq_delete(ep->conf_frame_Q);
+ }
+
+ if (ep->empty_frame_Q) {
+ size = cq_howmany(ep->empty_frame_Q);
+ for (; size; size--) {
+ struct packet *pkt = cq_get(ep->empty_frame_Q);
+
+ kfree(pkt);
+ }
+ cq_delete(ep->empty_frame_Q);
+ }
+
+ if (ep->dummy_packets_Q) {
+ size = cq_howmany(ep->dummy_packets_Q);
+ for (; size; size--) {
+ u8 *buff = cq_get(ep->dummy_packets_Q);
+
+ kfree(buff);
+ }
+ cq_delete(ep->dummy_packets_Q);
+ }
+
+ kfree(ep);
+ usb->ep0 = NULL;
+ }
+}
+
+/*
+ * create the endpoint structure
+ *
+ * arguments:
+ * usb A pointer to the data structure of the USB
+ * data_mem The data memory partition(BUS)
+ * ring_len TD ring length
+ */
+u32 create_endpoint(struct fhci_usb *usb, enum fhci_mem_alloc data_mem,
+ u32 ring_len)
+{
+ struct endpoint *ep;
+ struct usb_td *td;
+ unsigned long ep_offset;
+ char *err_for = "enpoint PRAM";
+ int ep_mem_size;
+ u32 i;
+
+ /* we need at least 3 TDs in the ring */
+ if (!(ring_len > 2)) {
+ fhci_err(usb->fhci, "illegal TD ring length parameters\n");
+ return -EINVAL;
+ }
+
+ ep = kzalloc(sizeof(*ep), GFP_KERNEL);
+ if (!ep)
+ goto err;
+
+ ep_mem_size = ring_len * sizeof(*td) + sizeof(struct fhci_ep_pram);
+ ep_offset = qe_muram_alloc(ep_mem_size, 32);
+ if (IS_ERR_VALUE(ep_offset))
+ goto err;
+ ep->td_base = qe_muram_addr(ep_offset);
+
+ /* zero all queue pointers */
+ ep->conf_frame_Q = cq_new((u8) ring_len + 2);
+ ep->empty_frame_Q = cq_new((u8) ring_len + 2);
+ ep->dummy_packets_Q = cq_new((u8) ring_len + 2);
+ if (!ep->conf_frame_Q || !ep->empty_frame_Q || !ep->dummy_packets_Q) {
+ err_for = "frame_queues";
+ goto err;
+ }
+
+ for (i = 0; i < (ring_len + 1); i++) {
+ struct packet *pkt;
+ u8 *buff;
+
+ pkt = kmalloc(sizeof(*pkt), GFP_KERNEL);
+ if (!pkt) {
+ err_for = "frame";
+ goto err;
+ }
+
+ buff = kmalloc(1028 * sizeof(*buff), GFP_KERNEL);
+ if (!buff) {
+ kfree(pkt);
+ err_for = "buffer";
+ goto err;
+ }
+ cq_put(ep->empty_frame_Q, pkt);
+ cq_put(ep->dummy_packets_Q, buff);
+ }
+
+ /* we put the endpoint parameter RAM right behind the TD ring */
+ ep->ep_pram_ptr = (void *)ep->td_base + sizeof(*td) * ring_len;
+
+ ep->conf_td = ep->td_base;
+ ep->empty_td = ep->td_base;
+
+ ep->already_pushed_dummy_bd = false;
+
+ /* initialize tds */
+ td = ep->td_base;
+ for (i = 0; i < ring_len; i++) {
+ td->buf_ptr = 0;
+ td->status = 0;
+ td->length = 0;
+ td->extra = 0;
+ td++;
+ }
+ td--;
+ td->status = TD_W; /* for last TD set Wrap bit */
+ td->length = 0;
+
+ /* endpoint structure has been created */
+ usb->ep0 = ep;
+
+ return 0;
+err:
+ kfree(ep);
+ endpoint_zero_free(usb);
+ fhci_err(usb->fhci, "no memory for the %s\n", err_for);
+ return -ENOMEM;
+}
+
+/*
+ * initialize the endpoint register according to the given parameters
+ *
+ * artuments:
+ * usb A pointer to the data strucutre of the USB
+ * ep A pointer to the endpoint structre
+ * data_mem The data memory partition(BUS)
+ */
+void init_endpoint_registers(struct fhci_usb *usb,
+ struct endpoint *ep, enum fhci_mem_alloc data_mem)
+{
+ u8 rt;
+
+ /* set the endpoint registers according to the endpoint */
+ usb->fhci->regs->usb_ep[0] = (USB_TRANS_CTR | USB_EP_MF | USB_EP_RTE);
+ usb->fhci->pram->ep_ptr[0] = qe_muram_offset(ep->ep_pram_ptr);
+
+ rt = (BUS_MODE_BO_BE | BUS_MODE_GBL);
+#ifdef MULTI_DATA_BUS
+ if (data_mem == MEM_SECONDARY)
+ rt |= BUS_MODE_DTB;
+#endif
+ ep->ep_pram_ptr->rx_func_code = rt;
+ ep->ep_pram_ptr->tx_func_code = rt;
+ ep->ep_pram_ptr->rx_buff_len = 1028;
+ ep->ep_pram_ptr->rx_base = 0;
+ ep->ep_pram_ptr->tx_base = qe_muram_offset(ep->td_base);
+ ep->ep_pram_ptr->rx_bd_ptr = 0;
+ ep->ep_pram_ptr->tx_bd_ptr = qe_muram_offset(ep->td_base);
+ ep->ep_pram_ptr->tx_state = 0;
+ /*
+ * FIXME: what the is this? I presume it is needed for u-code
+ * patched FHCIs, but this needs checking.
+ */
+ ep->ep_pram_ptr->reserved = (u16)((u32)qe_muram_addr(0) >> 16);
+}
+
+/* Collect the submitted frames and inform the application about them
+ * It is also prepearing the TDs for new frames. If the Tx interrupts
+ * are diabled, the application should call that routine to get
+ * confirmation about the submitted frames. Otherwise, the routine is
+ * called frome the interrupt service routine during the Tx interrupt.
+ * In that case the application is informed by calling the application
+ * specific 'transaction_confirm' routine*/
+static void td_transaction_confirm(struct fhci_usb *usb)
+{
+ struct endpoint *ep = usb->ep0;
+ struct packet *pkt;
+ struct usb_td *td;
+ u16 extra_data;
+ u16 td_status;
+ u16 td_length;
+ u32 buf;
+
+ /*
+ * collect transmitted BDs from the chip. The routine clears all BDs
+ * with R bit = 0 and the pointer to data buffer is not NULL, that is
+ * BDs which point to the transmitted data buffer
+ */
+ do {
+ td = ep->conf_td;
+ td_status = td->status;
+ td_length = td->length;
+ buf = td->buf_ptr;
+ extra_data = td->extra;
+
+ /* check if the TD is empty */
+ if (!(!(td_status & TD_R) && ((td_status & ~TD_W) || buf)))
+ break;
+ /* check if it is a dummy buffer */
+ else if ((buf == DUMMY_BD_BUFFER) && !(td_status & ~TD_W))
+ break;
+
+ /* mark TD as empty */
+ td->status &= TD_W;
+ td->length = 0;
+ td->buf_ptr = 0;
+ td->extra = 0;
+ /* advance the TD pointer */
+ ep->conf_td = next_bd(ep->td_base, ep->conf_td, td_status);
+
+ /* check if it is a dummy buffer(type2) */
+ if ((buf == DUMMY2_BD_BUFFER) && !(td_status & ~TD_W))
+ continue;
+
+ pkt = cq_get(ep->conf_frame_Q);
+ if (!pkt)
+ fhci_err(usb->fhci, "no frame to confirm\n");
+
+ if (td_status & TD_ERRORS) {
+ if (td_status & TD_RXER) {
+ if (td_status & TD_CR)
+ pkt->status = USB_TD_RX_ER_CRC;
+ else if (td_status & TD_AB)
+ pkt->status = USB_TD_RX_ER_BITSTUFF;
+ else if (td_status & TD_OV)
+ pkt->status = USB_TD_RX_ER_OVERUN;
+ else if (td_status & TD_BOV)
+ pkt->status = USB_TD_RX_DATA_OVERUN;
+ else if (td_status & TD_NO)
+ pkt->status = USB_TD_RX_ER_NONOCT;
+ else
+ fhci_err(usb->fhci, "illegal error "
+ "occured\n");
+ } else if (td_status & TD_NAK)
+ pkt->status = USB_TD_TX_ER_NAK;
+ else if (td_status & TD_TO)
+ pkt->status = USB_TD_TX_ER_TIMEOUT;
+ else if (td_status & TD_UN)
+ pkt->status = USB_TD_TX_ER_UNDERUN;
+ else if (td_status & TD_STAL)
+ pkt->status = USB_TD_TX_ER_STALL;
+ else
+ fhci_err(usb->fhci, "illegal error occured\n");
+ } else if ((extra_data & TD_TOK_IN) &&
+ pkt->len > td_length - CRC_SIZE) {
+ pkt->status = USB_TD_RX_DATA_UNDERUN;
+ }
+
+ if (extra_data & TD_TOK_IN)
+ pkt->len = td_length - CRC_SIZE;
+ else if (pkt->info & PKT_ZLP)
+ pkt->len = 0;
+ else
+ pkt->len = td_length;
+
+ transaction_confirm(usb, pkt);
+ } while (1);
+}
+
+/*
+ * Submitting a data frame to a specified endpoint of a USB device
+ * The frame is put in the driver's transmit queue for this endpoint
+ *
+ * Arguments:
+ * usb A pointer to the USB structure
+ * pkt A pointer to the user frame structure
+ * trans_type Transaction tyep - IN,OUT or SETUP
+ * dest_addr Device address - 0~127
+ * dest_ep Endpoint number of the device - 0~16
+ * trans_mode Pipe type - ISO,Interrupt,bulk or control
+ * dest_speed USB speed - Low speed or FULL speed
+ * data_toggle Data sequence toggle - 0 or 1
+ */
+u32 host_transaction(struct fhci_usb *usb,
+ struct packet *pkt,
+ enum fhci_ta_type trans_type,
+ u8 dest_addr,
+ u8 dest_ep,
+ enum fhci_tf_mode trans_mode,
+ enum fhci_speed dest_speed, u8 data_toggle)
+{
+ struct endpoint *ep = usb->ep0;
+ struct usb_td *td;
+ u16 extra_data;
+ u16 td_status;
+
+ fhci_usb_disable_interrupt(usb);
+ /* start from the next BD that should be filled */
+ td = ep->empty_td;
+ td_status = td->status;
+
+ if (td_status & TD_R && td->length) {
+ /* if the TD is not free */
+ fhci_usb_enable_interrupt(usb);
+ return -1;
+ }
+
+ /* get the next TD in the ring */
+ ep->empty_td = next_bd(ep->td_base, ep->empty_td, td_status);
+ fhci_usb_enable_interrupt(usb);
+ pkt->priv_data = td;
+ td->buf_ptr = virt_to_phys(pkt->data);
+ /* sets up transaction parameters - addr,endp,dir,and type */
+ extra_data = (dest_ep << TD_ENDP_SHIFT) | dest_addr;
+ switch (trans_type) {
+ case FHCI_TA_IN:
+ extra_data |= TD_TOK_IN;
+ break;
+ case FHCI_TA_OUT:
+ extra_data |= TD_TOK_OUT;
+ break;
+ case FHCI_TA_SETUP:
+ extra_data |= TD_TOK_SETUP;
+ break;
+ }
+ if (trans_mode == FHCI_TF_ISO)
+ extra_data |= TD_ISO;
+ td->extra = extra_data;
+
+ /* sets up the buffer descriptor */
+ td_status = ((td_status & TD_W) | TD_R | TD_L | TD_I | TD_CNF);
+ if (!(pkt->info & PKT_NO_CRC))
+ td_status |= TD_TC;
+
+ switch (trans_type) {
+ case FHCI_TA_IN:
+ if (data_toggle) {
+ pkt->info |= PKT_PID_DATA1;
+ } else {
+ pkt->info |= PKT_PID_DATA0;
+ }
+ break;
+ default:
+ if (data_toggle) {
+ td_status |= TD_PID_DATA1;
+ pkt->info |= PKT_PID_DATA1;
+ } else {
+ td_status |= TD_PID_DATA0;
+ pkt->info |= PKT_PID_DATA0;
+ }
+ break;
+ }
+
+ if ((dest_speed == FHCI_LOW_SPEED) &&
+ (usb->port_status == FHCI_PORT_FULL))
+ td_status |= TD_LSP;
+
+ td->status = td_status;
+
+ /* set up buffer length */
+ if (trans_type == FHCI_TA_IN)
+ td->length = pkt->len + CRC_SIZE;
+ else
+ td->length = pkt->len;
+
+ /* put the frame to the confirmation queue */
+ cq_put(ep->conf_frame_Q, pkt);
+
+ if (cq_howmany(ep->conf_frame_Q) == 1)
+ usb->fhci->regs->usb_comm = USB_CMD_STR_FIFO;
+
+ return 0;
+}
+
+/* Reset the Tx BD ring*/
+void flush_bds(struct fhci_usb *usb)
+{
+ u16 extra_data;
+ u16 td_status;
+ u32 buf;
+ struct usb_td *td;
+ struct endpoint *ep = usb->ep0;
+
+ td = ep->td_base;
+ do {
+ td_status = td->status;
+ buf = td->buf_ptr;
+ extra_data = td->extra;
+
+ /* if the TD is not empty - we'll confirm it as Timeout */
+ if (td_status & TD_R)
+ td->status = (td_status & ~TD_R) | TD_TO;
+ /* if this TD is dummy - let's skip this TD */
+ else if (td->buf_ptr == DUMMY_BD_BUFFER)
+ td->buf_ptr = DUMMY2_BD_BUFFER;
+ /* if this is the last TD - break */
+ if (td_status & TD_W)
+ break;
+
+ td++;
+ } while (1);
+
+ td_transaction_confirm(usb);
+
+ td = ep->td_base;
+ do {
+ td->status = 0;
+ td->length = 0;
+ td->buf_ptr = 0;
+ td->extra = 0;
+ td++;
+ } while (!(td->status & TD_W));
+ td->status = TD_W; /* for last TD set Wrap bit */
+ td->length = 0;
+ td->buf_ptr = 0;
+ td->extra = 0;
+
+ ep->ep_pram_ptr->tx_bd_ptr = ep->ep_pram_ptr->tx_base;
+ ep->ep_pram_ptr->tx_state = 0;
+ ep->ep_pram_ptr->tx_cnt = 0;
+ ep->conf_td = ep->empty_td = ep->td_base;
+}
+
+/*
+ * Flush all transmitted packets from TDs in the actual frame.
+ * This routine is called when something wrong with the controller and
+ * we want to get rid of the actual frame and start again next frame
+ */
+void flush_actual_frame(struct fhci_usb *usb)
+{
+ u8 mode;
+ u16 tb_ptr;
+ u16 extra_data;
+ u16 td_status;
+ u32 buf_ptr;
+ struct usb_td *td;
+ struct endpoint *ep = usb->ep0;
+
+ /* disable the USB controller */
+ mode = usb->fhci->regs->usb_mod;
+ usb->fhci->regs->usb_mod = (u8) (mode & ~USB_MODE_EN);
+
+ tb_ptr = ep->ep_pram_ptr->tx_bd_ptr;
+ td = qe_muram_addr(tb_ptr);
+ td_status = td->status;
+ buf_ptr = td->buf_ptr;
+ extra_data = td->extra;
+ do {
+ if (td_status & TD_R) {
+ td->status = (td_status & ~TD_R) | TD_TO;
+ } else {
+ td->buf_ptr = 0;
+ ep->already_pushed_dummy_bd = false;
+ break;
+ }
+
+ /* advance the TD pointer */
+ td = next_bd(ep->td_base, td, td_status);
+ td_status = td->status;
+ buf_ptr = td->buf_ptr;
+ extra_data = td->extra;
+ } while ((td_status & TD_R) || buf_ptr);
+
+ td_transaction_confirm(usb);
+
+ ep->ep_pram_ptr->tx_bd_ptr = ep->ep_pram_ptr->tx_base;
+ ep->ep_pram_ptr->tx_state = 0;
+ ep->ep_pram_ptr->tx_cnt = 0;
+ ep->conf_td = ep->empty_td = ep->td_base;
+
+ usb->actual_frame->frame_status = FRAME_TIMER_END_TRANSMISSION;
+
+ /* reset the event register */
+ usb->fhci->regs->usb_event = 0xffff;
+ /* enable the USB controller */
+ usb->fhci->regs->usb_mod = (u8) (mode | USB_MODE_EN);
+}
+
+/* handles Tx confirm and Tx error interrupt */
+void tx_conf_interrupt(struct fhci_usb *usb)
+{
+ td_transaction_confirm(usb);
+
+ /*
+ * Schedule another transaction to this frame only if we have
+ * already confirmed all transaction in the frame.
+ */
+ if (((get_sof_timer_count(usb) < usb->max_frame_usage) ||
+ (usb->actual_frame->frame_status & FRAME_END_TRANSMISSION)) &&
+ (list_empty(&usb->actual_frame->tds_list)))
+ schedule_transactions(usb);
+}
+
+void host_transmit_actual_frame(struct fhci_usb *usb)
+{
+ u16 tb_ptr;
+ u16 td_status;
+ struct usb_td *td;
+ struct endpoint *ep = usb->ep0;
+
+ tb_ptr = ep->ep_pram_ptr->tx_bd_ptr;
+ td = qe_muram_addr(tb_ptr);
+
+ if (td->buf_ptr == DUMMY_BD_BUFFER) {
+ struct usb_td *old_td = td;
+
+ ep->already_pushed_dummy_bd = false;
+ td_status = td->status;
+ /* gets the next TD in the ring */
+ td = next_bd(ep->td_base, td, td_status);
+ tb_ptr = qe_muram_offset(td);
+ ep->ep_pram_ptr->tx_bd_ptr = tb_ptr;
+
+ /* start transmit only if we have something in the TDs */
+ if (td->status & TD_R)
+ usb->fhci->regs->usb_comm = USB_CMD_STR_FIFO;
+
+ if (ep->conf_td->buf_ptr == DUMMY_BD_BUFFER) {
+ old_td->buf_ptr = 0;
+ ep->conf_td = next_bd(ep->td_base, ep->conf_td,
+ td_status);
+ } else {
+ old_td->buf_ptr = DUMMY2_BD_BUFFER;
+ }
+ }
+}
diff --git a/drivers/usb/host/fhci.h b/drivers/usb/host/fhci.h
new file mode 100644
index 0000000..9eb454a
--- /dev/null
+++ b/drivers/usb/host/fhci.h
@@ -0,0 +1,543 @@
+/*
+ * Freescale QUICC Engine USB Host Controller Driver
+ *
+ * Copyright (c) Freescale Semicondutor, Inc. 2006.
+ * Shlomi Gridish <gridish at freescale.com>
+ * Jerry Huang <Chang-Ming.Huang at freescale.com>
+ * Copyright (c) Logic Product Development, Inc. 2007
+ * Peter Barada <peterb at logicpd.com>
+ * Copyright (c) MontaVista Software, Inc. 2008.
+ * Anton Vorontsov <avorontsov at ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef __FHCI_H
+#define __FHCI_H
+
+#if defined(CONFIG_FHCI_DEBUG) && !defined(DEBUG)
+#define DEBUG
+#endif
+
+#define USB_CLOCK 48000000
+
+#define FHCI_PRAM_SIZE 0x100
+
+#define MAX_EDS 32
+#define MAX_TDS 32
+
+
+/* CRC16 field size */
+#define CRC_SIZE 2
+
+/* USB protocol overhead for each frame transmitted from the host */
+#define PROTOCOL_OVERHEAD 7
+
+/* Packet structure, info field */
+#define PKT_PID_DATA0 0x80000000 /* PID - Data toggle zero */
+#define PKT_PID_DATA1 0x40000000 /* PID - Data toggle one */
+#define PKT_PID_SETUP 0x20000000 /* PID - Setup bit */
+#define PKT_SETUP_STATUS 0x10000000 /* Setup status bit */
+#define PKT_SETADDR_STATUS 0x08000000 /* Set address status bit */
+#define PKT_SET_HOST_LAST 0x04000000 /* Last data packet */
+#define PKT_HOST_DATA 0x02000000 /* Data packet */
+#define PKT_FIRST_IN_FRAME 0x01000000 /* First packet in the frame */
+#define PKT_TOKEN_FRAME 0x00800000 /* Token packet */
+#define PKT_ZLP 0x00400000 /* Zero length packet */
+#define PKT_IN_TOKEN_FRAME 0x00200000 /* IN token packet */
+#define PKT_OUT_TOKEN_FRAME 0x00100000 /* OUT token packet */
+#define PKT_SETUP_TOKEN_FRAME 0x00080000 /* SETUP token packet */
+#define PKT_STALL_FRAME 0x00040000 /* STALL packet */
+#define PKT_NACK_FRAME 0x00020000 /* NACK packet */
+#define PKT_NO_PID 0x00010000 /* No PID */
+#define PKT_NO_CRC 0x00008000 /* don't append CRC */
+#define PKT_HOST_COMMAND 0x00004000 /* Host command packet */
+#define PKT_DUMMY_PACKET 0x00002000 /* Dummy packet, used for mmm */
+#define PKT_LOW_SPEED_PACKET 0x00001000 /* Low-Speed packet */
+
+#define TRANS_OK 0
+#define TRANS_INPROGRESS -1
+#define TRANS_DISCARD -2
+#define TRANS_FAIL -3
+
+#define PS_INT 0
+#define PS_DISCONNECTED 1
+#define PS_CONNECTED 2
+#define PS_READY 3
+#define PS_MISSING 4
+
+/* Transfer Descriptor status field */
+#define USB_TD_OK 0x00000000 /* TD transmited or received ok */
+#define USB_TD_INPROGRESS 0x80000000 /* TD is being transmitted */
+#define USB_TD_RX_ER_NONOCT 0x40000000 /* Tx Non Octet Aligned Packet */
+#define USB_TD_RX_ER_BITSTUFF 0x20000000 /* Frame Aborted-Received pkt */
+#define USB_TD_RX_ER_CRC 0x10000000 /* CRC error */
+#define USB_TD_RX_ER_OVERUN 0x08000000 /* Over - run occured */
+#define USB_TD_RX_ER_PID 0x04000000 /* wrong PID received */
+#define USB_TD_RX_DATA_UNDERUN 0x02000000 /* shorter than expected */
+#define USB_TD_RX_DATA_OVERUN 0x01000000 /* longer than expected */
+#define USB_TD_TX_ER_NAK 0x00800000 /* NAK handshake */
+#define USB_TD_TX_ER_STALL 0x00400000 /* STALL handshake */
+#define USB_TD_TX_ER_TIMEOUT 0x00200000 /* transmit time out */
+#define USB_TD_TX_ER_UNDERUN 0x00100000 /* transmit underrun */
+
+#define USB_TD_ERROR (USB_TD_RX_ER_NONOCT | USB_TD_RX_ER_BITSTUFF | \
+ USB_TD_RX_ER_CRC | USB_TD_RX_ER_OVERUN | USB_TD_RX_ER_PID | \
+ USB_TD_RX_DATA_UNDERUN | USB_TD_RX_DATA_OVERUN | \
+ USB_TD_TX_ER_NAK | USB_TD_TX_ER_STALL | \
+ USB_TD_TX_ER_TIMEOUT | USB_TD_TX_ER_UNDERUN)
+
+/* Transfer Descriptor toggle field */
+#define USB_TD_TOGGLE_DATA0 0
+#define USB_TD_TOGGLE_DATA1 1
+#define USB_TD_TOGGLE_CARRY 2
+
+/* #define MULTI_DATA_BUS */
+
+/* Bus mode register RBMR/TBMR */
+#define BUS_MODE_GBL 0x20 /*Global snooping */
+#define BUS_MODE_BO 0x18 /*Byte ordering */
+#define BUS_MODE_BO_BE 0x10 /*Byte ordering - Big-endian */
+#define BUS_MODE_DTB 0x02 /*Data bus */
+
+/* FHCI QE USB Register Description */
+
+/* USB Mode Register bit define */
+#define USB_MODE_EN 0x01
+#define USB_MODE_HOST 0x02
+#define USB_MODE_TEST 0x04
+#define USB_MODE_SFTE 0x08
+#define USB_MODE_RESUME 0x40
+#define USB_MODE_LSS 0x80
+
+/* USB Slave Address Register Mask */
+#define USB_SLVADDR_MASK 0x7F
+
+/* USB Endpoint register define */
+#define USB_EPNUM_MASK 0xF000
+#define USB_EPNUM_SHIFT 12
+
+#define USB_TRANS_MODE_SHIFT 8
+#define USB_TRANS_CTR 0x0000
+#define USB_TRANS_INT 0x0100
+#define USB_TRANS_BULK 0x0200
+#define USB_TRANS_ISO 0x0300
+
+#define USB_EP_MF 0x0020
+#define USB_EP_RTE 0x0010
+
+#define USB_THS_SHIFT 2
+#define USB_THS_MASK 0x000c
+#define USB_THS_NORMAL 0x0
+#define USB_THS_IGNORE_IN 0x0004
+#define USB_THS_NACK 0x0008
+#define USB_THS_STALL 0x000c
+
+#define USB_RHS_SHIFT 0
+#define USB_RHS_MASK 0x0003
+#define USB_RHS_NORMAL 0x0
+#define USB_RHS_IGNORE_OUT 0x0001
+#define USB_RHS_NACK 0x0002
+#define USB_RHS_STALL 0x0003
+
+#define USB_RTHS_MASK 0x000f
+
+/* USB Command Register define */
+#define USB_CMD_STR_FIFO 0x80
+#define USB_CMD_FLUSH_FIFO 0x40
+#define USB_CMD_ISFT 0x20
+#define USB_CMD_DSFT 0x10
+#define USB_CMD_EP_MASK 0x03
+
+/* USB Event and Mask Register define */
+#define USB_E_MSF_MASK 0x0800
+#define USB_E_SFT_MASK 0x0400
+#define USB_E_RESET_MASK 0x0200
+#define USB_E_IDLE_MASK 0x0100
+#define USB_E_TXE4_MASK 0x0080
+#define USB_E_TXE3_MASK 0x0040
+#define USB_E_TXE2_MASK 0x0020
+#define USB_E_TXE1_MASK 0x0010
+#define USB_E_SOF_MASK 0x0008
+#define USB_E_BSY_MASK 0x0004
+#define USB_E_TXB_MASK 0x0002
+#define USB_E_RXB_MASK 0x0001
+
+/* operation mode */
+enum fhci_op_mode {
+ FHCI_OP_FS_DEVICE = 0,
+ FHCI_OP_LS_DEVICE,
+ FHCI_OP_HOST,
+ FHCI_OP_DISCONNECT,
+ FHCI_OP_POWER_ON,
+ FHCI_OP_POWER_OFF
+};
+
+/* Freescale USB Host controller registers */
+struct fhci_regs {
+ u8 usb_mod; /* mode register */
+ u8 usb_addr; /* address register */
+ u8 usb_comm; /* command register */
+ u8 reserved1[1];
+ u16 usb_ep[4]; /* endpoint register */
+ u8 reserved2[4];
+ u16 usb_event; /* event register */
+ u8 reserved3[2];
+ u16 usb_mask; /* mask register */
+ u8 reserved4[1];
+ u8 usb_status; /* status register */
+ u16 usb_sof_tmr; /* Start Of Frame timer */
+ u8 reserved5[2];
+ u16 usb_frame_num; /* frame number register */
+ u8 reserved6[1];
+};
+
+/* Freescale USB HOST */
+struct fhci_pram {
+ u16 ep_ptr[4]; /* Endpoint porter reg */
+ u32 rx_state; /* Rx internal state */
+ u32 rx_ptr; /* Rx internal data pointer */
+ u16 frame_num; /* Frame number */
+ u16 rx_cnt; /* Rx byte count */
+ u32 rx_temp; /* Rx temp */
+ u32 rx_data_temp; /* Rx data temp */
+ u16 rx_u_ptr; /* Rx microcode return address temp */
+ u8 reserved1[2]; /* reserved area */
+ u32 sof_tbl; /* SOF lookup table pointer */
+ u8 sof_u_crc_temp; /* SOF micorcode CRC5 temp reg */
+ u8 reserved2[0xdb];
+};
+
+/* Freescale USB Endpoint*/
+struct fhci_ep_pram {
+ u16 rx_base; /* Rx BD base address */
+ u16 tx_base; /* Tx BD base address */
+ u8 rx_func_code; /* Rx function code */
+ u8 tx_func_code; /* Tx function code */
+ u16 rx_buff_len; /* Rx buffer length */
+ u16 rx_bd_ptr; /* Rx BD pointer */
+ u16 tx_bd_ptr; /* Tx BD pointer */
+ u32 tx_state; /* Tx internal state */
+ u32 tx_ptr; /* Tx internal data pointer */
+ u16 tx_crc; /* temp transmit CRC */
+ u16 tx_cnt; /* Tx byte count */
+ u32 tx_temp; /* Tx temp */
+ u16 tx_u_ptr; /* Tx microcode return address temp */
+ u16 reserved;
+};
+
+struct fhci_controller_list {
+ struct list_head ctrl_list; /* control endpoints */
+ struct list_head bulk_list; /* bulk endpoints */
+ struct list_head iso_list; /* isochronous endpoints */
+ struct list_head intr_list; /* interruput endpoints */
+ struct list_head done_list; /* done transfers */
+};
+
+struct virtual_root_hub {
+ int dev_num; /* USB address of the root hub */
+ u32 feature; /* indicates what feature has been set */
+ struct usb_hub_status hub;
+ struct usb_port_status port;
+};
+
+enum fhci_gpios {
+ GPIO_USBOE = 0,
+ GPIO_USBTP,
+ GPIO_USBTN,
+ GPIO_USBRP,
+ GPIO_USBRN,
+ /* these are optional */
+ GPIO_SPEED,
+ GPIO_SUSPN,
+};
+
+#define NUM_GPIOS (GPIO_SUSPN + 1)
+
+struct fhci_hcd {
+ struct fhci_regs __iomem *regs; /* I/O memory used to communicate */
+ struct fhci_pram __iomem *pram; /* Parameter RAM */
+ int timer;
+ unsigned int timer_irq;
+ int gpios[NUM_GPIOS];
+ enum qe_clock fullspeed_clk;
+ enum qe_clock lowspeed_clk;
+
+ spinlock_t lock;
+ struct fhci_usb *usb_lld; /* Low-level driver */
+ struct virtual_root_hub *vroot_hub; /* the virtual root hub */
+ int active_urbs;
+ struct fhci_controller_list *hc_list;
+ struct tasklet_struct *process_done_task; /* tasklet for done list */
+
+ struct list_head empty_eds;
+ struct list_head empty_tds;
+
+#ifdef CONFIG_FHCI_DEBUG
+ int usb_irq_stat[13];
+ struct dentry *dfs_root;
+ struct dentry *dfs_regs;
+ struct dentry *dfs_irq_stat;
+#endif
+};
+
+#define USB_FRAME_USAGE 90
+#define FRAME_TIME_USAGE (USB_FRAME_USAGE*10) /* frame time usage */
+#define SW_FIX_TIME_BETWEEN_TRANSACTION 150 /* SW */
+#define MAX_BYTES_PER_FRAME (USB_FRAME_USAGE*15)
+#define MAX_PERIODIC_FRAME_USAGE 90
+
+/* transaction type */
+enum fhci_ta_type {
+ FHCI_TA_IN = 0, /* input transaction */
+ FHCI_TA_OUT, /* output transaction */
+ FHCI_TA_SETUP, /* setup transaction */
+};
+
+/* transfer mode */
+enum fhci_tf_mode {
+ FHCI_TF_CTRL = 0,
+ FHCI_TF_ISO,
+ FHCI_TF_BULK,
+ FHCI_TF_INTR,
+};
+
+enum fhci_speed{
+ FHCI_FULL_SPEED,
+ FHCI_LOW_SPEED,
+};
+
+/* endpoint state */
+enum fhci_ed_state {
+ FHCI_ED_NEW = 0,/* pipe is new */
+ FHCI_ED_OPER, /* pipe is operating */
+ FHCI_ED_URB_DEL,/* pipe is in hold because urb is being deleted */
+ FHCI_ED_SKIP, /* skip this pipe */
+ FHCI_ED_HALTED, /* pipe is halted */
+};
+
+enum fhci_port_status {
+ FHCI_PORT_DISABLED = 0,
+ FHCI_PORT_DISCONNECTING,
+ FHCI_PORT_WAITING, /* waiting for connection */
+ FHCI_PORT_FULL, /* full speed connected */
+ FHCI_PORT_LOW, /* low speed connected */
+};
+
+enum fhci_mem_alloc {
+ MEM_CACHABLE_SYS = 0x00000001, /* primary DDR,cachable */
+ MEM_NOCACHE_SYS = 0x00000004, /* primary DDR,non-cachable */
+ MEM_SECONDARY = 0x00000002, /* either secondary DDR or SDRAM */
+ MEM_PRAM = 0x00000008, /* multi-user RAM identifier */
+};
+
+/* USB default parameters*/
+#define DEFAULT_RING_LEN 8
+#define DEFAULT_DATA_MEM MEM_CACHABLE_SYS
+
+struct ed {
+ u8 dev_addr; /*device address */
+ u8 ep_addr; /*endpoint address */
+ enum fhci_tf_mode mode; /*USB transfer mode */
+ enum fhci_speed speed;
+ unsigned int max_pkt_size;
+ enum fhci_ed_state state;
+ struct list_head td_list; /*a list of all queued TD to this pipe */
+ struct list_head node;
+
+ /*read only parameters, should be cleared upon initialization */
+ u8 toggle_carry; /*toggle carry from the last TD submitted */
+ u32 last_iso; /*time stamp of last queued ISO transfer */
+ struct td *td_head; /*a pointer to the current TD handled */
+};
+
+struct td {
+ void *data; /* a pointer to the data buffer */
+ unsigned int len; /* length of the data to be submitted */
+ unsigned int actual_len;/* actual bytes transfered on this td */
+ enum fhci_ta_type type; /* transaction type */
+ u8 toggle; /* toggle for the next transwithin this TD */
+ u16 iso_index; /* ISO transaction index */
+ u16 start_frame; /* start frame time stamp */
+ u16 interval; /* interval between transaction (for ISO/Intr) */
+ u32 status; /* status of the TD */
+ struct ed *ed; /* a handle to the corresponding ED */
+ struct urb *urb; /* a handle to the corresponding URB */
+ bool ioc; /* Inform On Completion */
+ struct list_head node;
+
+ /*read only parameters should be cleared upon initialization */
+ struct packet *pkt;
+ int nak_cnt;
+ int error_cnt;
+ struct list_head frame_lh;
+};
+
+struct packet {
+ u8 *data; /* packet data */
+ u32 len; /* packet length */
+ u32 status; /* status of the packet - equivalent to the status
+ * field for the corresponding structure td */
+ u32 info; /* packet information */
+ void *priv_data;/* private data of the driver */
+};
+
+/* struct for each URB */
+#define URB_INPROGRESS 0
+#define URB_DEL 1
+
+/* URB states (state field) */
+#define US_BULK 0
+#define US_BULK0 1
+
+/* three setup states */
+#define US_CTRL_SETUP 2
+#define US_CTRL_DATA 1
+#define US_CTRL_ACK 0
+
+#define EP_ZERO 0
+
+struct urb_priv {
+ int num_of_tds;
+ int tds_cnt;
+ int state;
+
+ struct td **tds;
+ struct ed *ed;
+ struct timer_list time_out;
+};
+
+/* struct for each 1mSec frame time */
+#define FRAME_IS_TRANSMITTED 0x00
+#define FRAME_TIMER_END_TRANSMISSION 0x01
+#define FRAME_DATA_END_TRANSMISSION 0x02
+#define FRAME_END_TRANSMISSION 0x03
+#define FRAME_IS_PREPARED 0x04
+
+struct fhci_time_frame {
+ u16 frame_num; /*frame number */
+ u16 total_bytes; /* total bytes submitted within this frame */
+ u8 frame_status; /*flag that indicates to stop fill this frame */
+ struct list_head tds_list; /*all tds of this frame */
+};
+
+/* internal driver structure*/
+struct fhci_usb {
+ u16 saved_msk; /*saving of the USB mask register */
+ struct endpoint *ep0; /*pointer for endpoint0 structure */
+ u32 intr_counter; /*counter of the incoming USB Intr */
+ int intr_nesting_cnt; /*interrupt nesting counter */
+ u16 max_frame_usage; /*max frame time usage,in micro-sec */
+ u16 max_bytes_per_frame;/*max byte can be tx in one time frame */
+ u32 sw_transaction_time;/*sw complete trans time,in micro-sec */
+ struct fhci_time_frame *actual_frame;
+ struct fhci_controller_list *hc_list; /* main structure for hc */
+ struct virtual_root_hub *vroot_hub;
+ enum fhci_port_status port_status; /* v_rh port status */
+
+ u32 (*transfer_confirm)(struct fhci_hcd *fhci);
+
+ struct fhci_hcd *fhci;
+};
+
+/*
+ * Various helpers and prototypes below.
+ */
+
+static void move_head_to_tail(struct list_head *list)
+{
+ struct list_head *node = list->next;
+
+ if (!list_empty(list)) {
+ list_del(node);
+ list_add_tail(node, list);
+ }
+}
+
+/* maps the hardware error code to the USB error code */
+static int status_to_error(u32 status)
+{
+ if (status == USB_TD_OK)
+ return 0;
+ else if (status & USB_TD_RX_ER_CRC)
+ return -EILSEQ;
+ else if (status & USB_TD_RX_ER_NONOCT)
+ return -EPROTO;
+ else if (status & USB_TD_RX_ER_OVERUN)
+ return -ECOMM;
+ else if (status & USB_TD_RX_ER_BITSTUFF)
+ return -EPROTO;
+ else if (status & USB_TD_RX_ER_PID)
+ return -EILSEQ;
+ else if (status & (USB_TD_TX_ER_NAK | USB_TD_TX_ER_TIMEOUT))
+ return -ETIMEDOUT;
+ else if (status & USB_TD_TX_ER_STALL)
+ return -EPIPE;
+ else if (status & USB_TD_TX_ER_UNDERUN)
+ return -ENOSR;
+ else if (status & USB_TD_RX_DATA_UNDERUN)
+ return -EREMOTEIO;
+ else if (status & USB_TD_RX_DATA_OVERUN)
+ return -EOVERFLOW;
+ else
+ return -EINVAL;
+}
+
+static u16 get_frame_num(struct fhci_hcd *fhci)
+{
+ return fhci->pram->frame_num & 0x07ff;
+}
+
+
+#define fhci_dbg(fhci, fmt, args...) \
+ dev_dbg(fhci_to_hcd(fhci)->self.controller, fmt, ##args)
+#define fhci_err(fhci, fmt, args...) \
+ dev_err(fhci_to_hcd(fhci)->self.controller, fmt, ##args)
+#define fhci_info(fhci, fmt, args...) \
+ dev_info(fhci_to_hcd(fhci)->self.controller, fmt, ##args)
+#define fhci_warn(fhci, fmt, args...) \
+ dev_warn(fhci_to_hcd(fhci)->self.controller, fmt, ##args)
+
+static struct fhci_hcd *hcd_to_fhci(struct usb_hcd *hcd)
+{
+ return (struct fhci_hcd *)hcd->hcd_priv;
+}
+
+static struct usb_hcd *fhci_to_hcd(struct fhci_hcd *fhci)
+{
+ return container_of((void *)fhci, struct usb_hcd, hcd_priv);
+}
+
+static void fhci_usb_enable_interrupt(struct fhci_usb *usb);
+static void fhci_usb_disable_interrupt(struct fhci_usb *usb);
+static void flush_all_transmissions(struct fhci_usb *usb);
+static void device_connected_interrupt(struct fhci_hcd *fhci);
+static void recycle_empty_td(struct fhci_hcd *fhci, struct td *td);
+static struct ed *get_empty_ed(struct fhci_hcd *fhci);
+
+static struct td *td_alloc_fill(struct fhci_hcd *fhci,
+ struct urb *urb, struct urb_priv *urb_priv,
+ struct ed *ed, u16 index, enum fhci_ta_type type,
+ int toggle, u8 *data, u32 len, u16 interval,
+ u16 start_frame, bool ioc);
+static void flush_bds(struct fhci_usb *usb);
+static void flush_actual_frame(struct fhci_usb *usb);
+static u32 host_transaction(struct fhci_usb *usb,
+ struct packet *pkt, enum fhci_ta_type trans_type,
+ u8 dest_addr, u8 dest_ep, enum fhci_tf_mode trans_mode,
+ enum fhci_speed dest_speed, u8 data_toggle);
+static void push_dummy_bd(struct endpoint *ep);
+static void device_disconnected_interrupt(struct fhci_hcd *fhci);
+static int fhci_ioports_check_bus_state(struct fhci_hcd *fhci);
+static void process_done_list(unsigned long data);
+
+
+static void recycle_frame(struct fhci_usb *usb, struct packet *pkt);
+static void transaction_confirm(struct fhci_usb *usb, struct packet *pkt);
+static void qe_usb_restart_tx(u8 ep);
+static void schedule_transactions(struct fhci_usb *usb);
+
+#endif /* __FHCI_H */
--
1.5.2.2
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