Re: [PATCH] USB and Driver Core patches for 2.6.10

From: Greg KH
Date: Sat Jan 08 2005 - 01:35:44 EST

ChangeSet 1.1938.446.41, 2004/12/20 14:18:23-08:00, stern@xxxxxxxxxxxxxxxxxxx

[PATCH] USB: Create usb_hcd structures within usbcore [2/13]

This patch alters the EHCI driver, removing the routine that allocates the
hcd structure and introducing inline functions to convert safely between
the public and private hcd structures.

Signed-off-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <greg@xxxxxxxxx>


drivers/usb/host/ehci-dbg.c | 30 +++++++++++++++-------------
drivers/usb/host/ehci-hcd.c | 45 ++++++++++++++++++++----------------------
drivers/usb/host/ehci-hub.c | 12 +++++------
drivers/usb/host/ehci-mem.c | 31 +++++-----------------------
drivers/usb/host/ehci-q.c | 23 +++++++++++----------
drivers/usb/host/ehci-sched.c | 34 +++++++++++++++----------------
drivers/usb/host/ehci.h | 23 +++++++++++++--------
7 files changed, 94 insertions(+), 104 deletions(-)


diff -Nru a/drivers/usb/host/ehci-dbg.c b/drivers/usb/host/ehci-dbg.c
--- a/drivers/usb/host/ehci-dbg.c 2005-01-07 15:43:52 -08:00
+++ b/drivers/usb/host/ehci-dbg.c 2005-01-07 15:43:52 -08:00
@@ -19,13 +19,13 @@
/* this file is part of ehci-hcd.c */

#define ehci_dbg(ehci, fmt, args...) \
- dev_dbg ((ehci)->hcd.self.controller , fmt , ## args )
+ dev_dbg (ehci_to_hcd(ehci)->self.controller , fmt , ## args )
#define ehci_err(ehci, fmt, args...) \
- dev_err ((ehci)->hcd.self.controller , fmt , ## args )
+ dev_err (ehci_to_hcd(ehci)->self.controller , fmt , ## args )
#define ehci_info(ehci, fmt, args...) \
- dev_info ((ehci)->hcd.self.controller , fmt , ## args )
+ dev_info (ehci_to_hcd(ehci)->self.controller , fmt , ## args )
#define ehci_warn(ehci, fmt, args...) \
- dev_warn ((ehci)->hcd.self.controller , fmt , ## args )
+ dev_warn (ehci_to_hcd(ehci)->self.controller , fmt , ## args )

#ifdef EHCI_VERBOSE_DEBUG
# define vdbg dbg
@@ -657,7 +657,7 @@
"EHCI %x.%02x, hcd state %d\n",
hcd->self.controller->bus->name,
hcd->self.controller->bus_id,
- i >> 8, i & 0x0ff, ehci->hcd.state);
+ i >> 8, i & 0x0ff, hcd->state);
size -= temp;
next += temp;

@@ -733,18 +733,22 @@
}
static CLASS_DEVICE_ATTR (registers, S_IRUGO, show_registers, NULL);

-static inline void create_debug_files (struct ehci_hcd *bus)
+static inline void create_debug_files (struct ehci_hcd *ehci)
{
- class_device_create_file(&bus->hcd.self.class_dev, &class_device_attr_async);
- class_device_create_file(&bus->hcd.self.class_dev, &class_device_attr_periodic);
- class_device_create_file(&bus->hcd.self.class_dev, &class_device_attr_registers);
+ struct class_device *cldev = &ehci_to_hcd(ehci)->self.class_dev;
+
+ class_device_create_file(cldev, &class_device_attr_async);
+ class_device_create_file(cldev, &class_device_attr_periodic);
+ class_device_create_file(cldev, &class_device_attr_registers);
}

-static inline void remove_debug_files (struct ehci_hcd *bus)
+static inline void remove_debug_files (struct ehci_hcd *ehci)
{
- class_device_remove_file(&bus->hcd.self.class_dev, &class_device_attr_async);
- class_device_remove_file(&bus->hcd.self.class_dev, &class_device_attr_periodic);
- class_device_remove_file(&bus->hcd.self.class_dev, &class_device_attr_registers);
+ struct class_device *cldev = &ehci_to_hcd(ehci)->self.class_dev;
+
+ class_device_remove_file(cldev, &class_device_attr_async);
+ class_device_remove_file(cldev, &class_device_attr_periodic);
+ class_device_remove_file(cldev, &class_device_attr_registers);
}

#endif /* STUB_DEBUG_FILES */
diff -Nru a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
--- a/drivers/usb/host/ehci-hcd.c 2005-01-07 15:43:52 -08:00
+++ b/drivers/usb/host/ehci-hcd.c 2005-01-07 15:43:52 -08:00
@@ -199,7 +199,7 @@
command |= CMD_RESET;
dbg_cmd (ehci, "reset", command);
writel (command, &ehci->regs->command);
- ehci->hcd.state = USB_STATE_HALT;
+ ehci_to_hcd(ehci)->state = USB_STATE_HALT;
ehci->next_statechange = jiffies;
return handshake (&ehci->regs->command, CMD_RESET, 0, 250 * 1000);
}
@@ -210,7 +210,7 @@
u32 temp;

#ifdef DEBUG
- if (!HCD_IS_RUNNING (ehci->hcd.state))
+ if (!HCD_IS_RUNNING (ehci_to_hcd(ehci)->state))
BUG ();
#endif

@@ -219,7 +219,7 @@
temp &= STS_ASS | STS_PSS;
if (handshake (&ehci->regs->status, STS_ASS | STS_PSS,
temp, 16 * 125) != 0) {
- ehci->hcd.state = USB_STATE_HALT;
+ ehci_to_hcd(ehci)->state = USB_STATE_HALT;
return;
}

@@ -231,7 +231,7 @@
/* hardware can take 16 microframes to turn off ... */
if (handshake (&ehci->regs->status, STS_ASS | STS_PSS,
0, 16 * 125) != 0) {
- ehci->hcd.state = USB_STATE_HALT;
+ ehci_to_hcd(ehci)->state = USB_STATE_HALT;
return;
}
}
@@ -285,7 +285,8 @@
{
if (cap & (1 << 16)) {
int msec = 5000;
- struct pci_dev *pdev = to_pci_dev(ehci->hcd.self.controller);
+ struct pci_dev *pdev =
+ to_pci_dev(ehci_to_hcd(ehci)->self.controller);

/* request handoff to OS */
cap |= 1 << 24;
@@ -343,7 +344,7 @@
#ifdef CONFIG_PCI
/* EHCI 0.96 and later may have "extended capabilities" */
if (hcd->self.controller->bus == &pci_bus_type) {
- struct pci_dev *pdev = to_pci_dev(ehci->hcd.self.controller);
+ struct pci_dev *pdev = to_pci_dev(hcd->self.controller);

/* AMD8111 EHCI doesn't work, according to AMD errata */
if ((pdev->vendor == PCI_VENDOR_ID_AMD)
@@ -358,7 +359,7 @@
while (temp && count--) {
u32 cap;

- pci_read_config_dword (to_pci_dev(ehci->hcd.self.controller),
+ pci_read_config_dword (to_pci_dev(hcd->self.controller),
temp, &cap);
ehci_dbg (ehci, "capability %04x at %02x\n", cap, temp);
switch (cap & 0xff) {
@@ -505,7 +506,7 @@
writel (0, &ehci->regs->segment);
#if 0
// this is deeply broken on almost all architectures
- if (!pci_set_dma_mask (to_pci_dev(ehci->hcd.self.controller), 0xffffffffffffffffULL))
+ if (!pci_set_dma_mask (to_pci_dev(hcd->self.controller), 0xffffffffffffffffULL))
ehci_info (ehci, "enabled 64bit PCI DMA\n");
#endif
}
@@ -570,7 +571,7 @@
register_reboot_notifier (&ehci->reboot_notifier);
}

- ehci->hcd.state = USB_STATE_RUNNING;
+ hcd->state = USB_STATE_RUNNING;
writel (FLAG_CF, &ehci->regs->configured_flag);
readl (&ehci->regs->command); /* unblock posted write */

@@ -627,7 +628,7 @@
del_timer_sync (&ehci->watchdog);

spin_lock_irq(&ehci->lock);
- if (HCD_IS_RUNNING (ehci->hcd.state))
+ if (HCD_IS_RUNNING (hcd->state))
ehci_quiesce (ehci);

ehci_reset (ehci);
@@ -794,8 +795,9 @@
* misplace IRQs, and should let us run completely without IRQs.
* such lossage has been observed on both VT6202 and VT8235.
*/
- if (HCD_IS_RUNNING (ehci->hcd.state) && (ehci->async->qh_next.ptr != 0
- || ehci->periodic_sched != 0))
+ if (HCD_IS_RUNNING (ehci_to_hcd(ehci)->state) &&
+ (ehci->async->qh_next.ptr != 0 ||
+ ehci->periodic_sched != 0))
timer_action (ehci, TIMER_IO_WATCHDOG);
}

@@ -852,7 +854,7 @@
}

/* remote wakeup [4.3.1] */
- if ((status & STS_PCD) && ehci->hcd.remote_wakeup) {
+ if ((status & STS_PCD) && hcd->remote_wakeup) {
unsigned i = HCS_N_PORTS (ehci->hcs_params);

/* resume root hub? */
@@ -873,7 +875,7 @@
* stop that signaling.
*/
ehci->reset_done [i] = jiffies + msecs_to_jiffies (20);
- mod_timer (&ehci->hcd.rh_timer,
+ mod_timer (&hcd->rh_timer,
ehci->reset_done [i] + 1);
ehci_dbg (ehci, "port %d remote wakeup\n", i + 1);
}
@@ -947,7 +949,7 @@
/* if we need to use IAA and it's busy, defer */
if (qh->qh_state == QH_STATE_LINKED
&& ehci->reclaim
- && HCD_IS_RUNNING (ehci->hcd.state)) {
+ && HCD_IS_RUNNING (ehci_to_hcd(ehci)->state)) {
struct ehci_qh *last;

for (last = ehci->reclaim;
@@ -958,7 +960,7 @@
last->reclaim = qh;

/* bypass IAA if the hc can't care */
- } else if (!HCD_IS_RUNNING (ehci->hcd.state) && ehci->reclaim)
+ } else if (!HCD_IS_RUNNING (ehci_to_hcd(ehci)->state) && ehci->reclaim)
end_unlink_async (ehci, NULL);

/* something else might have unlinked the qh by now */
@@ -1006,7 +1008,7 @@

/* reschedule QH iff another request is queued */
if (!list_empty (&qh->qtd_list)
- && HCD_IS_RUNNING (ehci->hcd.state)) {
+ && HCD_IS_RUNNING (hcd->state)) {
int status;

status = qh_schedule (ehci, qh);
@@ -1062,7 +1064,7 @@
goto idle_timeout;
}

- if (!HCD_IS_RUNNING (ehci->hcd.state))
+ if (!HCD_IS_RUNNING (hcd->state))
qh->qh_state = QH_STATE_IDLE;
switch (qh->qh_state) {
case QH_STATE_LINKED:
@@ -1107,6 +1109,8 @@

static const struct hc_driver ehci_driver = {
.description = hcd_name,
+ .product_desc = "EHCI Host Controller",
+ .hcd_priv_size = sizeof(struct ehci_hcd),

/*
* generic hardware linkage
@@ -1124,11 +1128,6 @@
.resume = ehci_resume,
#endif
.stop = ehci_stop,
-
- /*
- * memory lifecycle (except per-request)
- */
- .hcd_alloc = ehci_hcd_alloc,

/*
* managing i/o requests and associated device resources
diff -Nru a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
--- a/drivers/usb/host/ehci-hub.c 2005-01-07 15:43:52 -08:00
+++ b/drivers/usb/host/ehci-hub.c 2005-01-07 15:43:52 -08:00
@@ -44,7 +44,7 @@
/* stop schedules, clean any completed work */
if (HCD_IS_RUNNING(hcd->state)) {
ehci_quiesce (ehci);
- ehci->hcd.state = USB_STATE_QUIESCING;
+ hcd->state = USB_STATE_QUIESCING;
}
ehci->command = readl (&ehci->regs->command);
if (ehci->reclaim)
@@ -59,7 +59,7 @@

if ((t1 & PORT_PE) && !(t1 & PORT_OWNER))
t2 |= PORT_SUSPEND;
- if (ehci->hcd.remote_wakeup)
+ if (hcd->remote_wakeup)
t2 |= PORT_WKOC_E|PORT_WKDISC_E|PORT_WKCONN_E;
else
t2 &= ~(PORT_WKOC_E|PORT_WKDISC_E|PORT_WKCONN_E);
@@ -73,7 +73,7 @@

/* turn off now-idle HC */
ehci_halt (ehci);
- ehci->hcd.state = HCD_STATE_SUSPENDED;
+ hcd->state = HCD_STATE_SUSPENDED;

ehci->next_statechange = jiffies + msecs_to_jiffies(10);
spin_unlock_irq (&ehci->lock);
@@ -145,7 +145,7 @@
}

ehci->next_statechange = jiffies + msecs_to_jiffies(5);
- ehci->hcd.state = USB_STATE_RUNNING;
+ hcd->state = USB_STATE_RUNNING;

/* Now we can safely re-enable irqs */
if (intr_enable)
@@ -212,7 +212,7 @@
unsigned long flags;

/* if !USB_SUSPEND, root hub timers won't get shut down ... */
- if (!HCD_IS_RUNNING(ehci->hcd.state))
+ if (!HCD_IS_RUNNING(hcd->state))
return 0;

/* init status to no-changes */
@@ -499,7 +499,7 @@
if ((temp & PORT_PE) == 0
|| (temp & PORT_RESET) != 0)
goto error;
- if (ehci->hcd.remote_wakeup)
+ if (hcd->remote_wakeup)
temp |= PORT_WAKE_BITS;
writel (temp | PORT_SUSPEND,
&ehci->regs->port_status [wIndex]);
diff -Nru a/drivers/usb/host/ehci-mem.c b/drivers/usb/host/ehci-mem.c
--- a/drivers/usb/host/ehci-mem.c 2005-01-07 15:43:52 -08:00
+++ b/drivers/usb/host/ehci-mem.c 2005-01-07 15:43:52 -08:00
@@ -32,25 +32,6 @@
*/

/*-------------------------------------------------------------------------*/
-/*
- * Allocator / cleanup for the per device structure
- * Called by hcd init / removal code
- */
-static struct usb_hcd *ehci_hcd_alloc (void)
-{
- struct ehci_hcd *ehci;
-
- ehci = (struct ehci_hcd *)
- kmalloc (sizeof (struct ehci_hcd), GFP_KERNEL);
- if (ehci != 0) {
- memset (ehci, 0, sizeof (struct ehci_hcd));
- ehci->hcd.product_desc = "EHCI Host Controller";
- return &ehci->hcd;
- }
- return NULL;
-}
-
-/*-------------------------------------------------------------------------*/

/* Allocate the key transfer structures from the previously allocated pool */

@@ -169,7 +150,7 @@
ehci->sitd_pool = NULL;

if (ehci->periodic)
- dma_free_coherent (ehci->hcd.self.controller,
+ dma_free_coherent (ehci_to_hcd(ehci)->self.controller,
ehci->periodic_size * sizeof (u32),
ehci->periodic, ehci->periodic_dma);
ehci->periodic = NULL;
@@ -187,7 +168,7 @@

/* QTDs for control/bulk/intr transfers */
ehci->qtd_pool = dma_pool_create ("ehci_qtd",
- ehci->hcd.self.controller,
+ ehci_to_hcd(ehci)->self.controller,
sizeof (struct ehci_qtd),
32 /* byte alignment (for hw parts) */,
4096 /* can't cross 4K */);
@@ -197,7 +178,7 @@

/* QHs for control/bulk/intr transfers */
ehci->qh_pool = dma_pool_create ("ehci_qh",
- ehci->hcd.self.controller,
+ ehci_to_hcd(ehci)->self.controller,
sizeof (struct ehci_qh),
32 /* byte alignment (for hw parts) */,
4096 /* can't cross 4K */);
@@ -211,7 +192,7 @@

/* ITD for high speed ISO transfers */
ehci->itd_pool = dma_pool_create ("ehci_itd",
- ehci->hcd.self.controller,
+ ehci_to_hcd(ehci)->self.controller,
sizeof (struct ehci_itd),
32 /* byte alignment (for hw parts) */,
4096 /* can't cross 4K */);
@@ -221,7 +202,7 @@

/* SITD for full/low speed split ISO transfers */
ehci->sitd_pool = dma_pool_create ("ehci_sitd",
- ehci->hcd.self.controller,
+ ehci_to_hcd(ehci)->self.controller,
sizeof (struct ehci_sitd),
32 /* byte alignment (for hw parts) */,
4096 /* can't cross 4K */);
@@ -231,7 +212,7 @@

/* Hardware periodic table */
ehci->periodic = (__le32 *)
- dma_alloc_coherent (ehci->hcd.self.controller,
+ dma_alloc_coherent (ehci_to_hcd(ehci)->self.controller,
ehci->periodic_size * sizeof(__le32),
&ehci->periodic_dma, 0);
if (ehci->periodic == 0) {
diff -Nru a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c
--- a/drivers/usb/host/ehci-q.c 2005-01-07 15:43:52 -08:00
+++ b/drivers/usb/host/ehci-q.c 2005-01-07 15:43:52 -08:00
@@ -200,7 +200,7 @@
|| QTD_CERR(token) == 0)
&& (!ehci_is_ARC(ehci)
|| urb->dev->tt->hub !=
- ehci->hcd.self.root_hub)) {
+ ehci_to_hcd(ehci)->self.root_hub)) {
#ifdef DEBUG
struct usb_device *tt = urb->dev->tt->hub;
dev_dbg (&tt->dev,
@@ -225,7 +225,7 @@
if ((qh->hw_info2 & __constant_cpu_to_le32 (0x00ff)) != 0) {

/* ... update hc-wide periodic stats (for usbfs) */
- hcd_to_bus (&ehci->hcd)->bandwidth_int_reqs--;
+ ehci_to_hcd(ehci)->self.bandwidth_int_reqs--;
}
qh_put (qh);
}
@@ -262,7 +262,7 @@

/* complete() can reenter this HCD */
spin_unlock (&ehci->lock);
- usb_hcd_giveback_urb (&ehci->hcd, urb, regs);
+ usb_hcd_giveback_urb (ehci_to_hcd(ehci), urb, regs);
spin_lock (&ehci->lock);
}

@@ -347,13 +347,13 @@

/* stop scanning when we reach qtds the hc is using */
} else if (likely (!stopped
- && HCD_IS_RUNNING (ehci->hcd.state))) {
+ && HCD_IS_RUNNING (ehci_to_hcd(ehci)->state))) {
break;

} else {
stopped = 1;

- if (unlikely (!HCD_IS_RUNNING (ehci->hcd.state)))
+ if (unlikely (!HCD_IS_RUNNING (ehci_to_hcd(ehci)->state)))
urb->status = -ESHUTDOWN;

/* ignore active urbs unless some previous qtd
@@ -717,7 +717,8 @@
* root hub tt, leave it zeroed.
*/
if (!ehci_is_ARC(ehci)
- || urb->dev->tt->hub != ehci->hcd.self.root_hub)
+ || urb->dev->tt->hub !=
+ ehci_to_hcd(ehci)->self.root_hub)
info2 |= urb->dev->tt->hub->devnum << 16;

/* NOTE: if (PIPE_INTERRUPT) { scheduler sets c-mask } */
@@ -778,7 +779,7 @@
(void) handshake (&ehci->regs->status, STS_ASS, 0, 150);
cmd |= CMD_ASE | CMD_RUN;
writel (cmd, &ehci->regs->command);
- ehci->hcd.state = USB_STATE_RUNNING;
+ ehci_to_hcd(ehci)->state = USB_STATE_RUNNING;
/* posted write need not be known to HC yet ... */
}
}
@@ -957,7 +958,7 @@
qh_completions (ehci, qh, regs);

if (!list_empty (&qh->qtd_list)
- && HCD_IS_RUNNING (ehci->hcd.state))
+ && HCD_IS_RUNNING (ehci_to_hcd(ehci)->state))
qh_link_async (ehci, qh);
else {
qh_put (qh); // refcount from async list
@@ -965,7 +966,7 @@
/* it's not free to turn the async schedule on/off; leave it
* active but idle for a while once it empties.
*/
- if (HCD_IS_RUNNING (ehci->hcd.state)
+ if (HCD_IS_RUNNING (ehci_to_hcd(ehci)->state)
&& ehci->async->qh_next.qh == 0)
timer_action (ehci, TIMER_ASYNC_OFF);
}
@@ -999,7 +1000,7 @@
/* stop async schedule right now? */
if (unlikely (qh == ehci->async)) {
/* can't get here without STS_ASS set */
- if (ehci->hcd.state != USB_STATE_HALT) {
+ if (ehci_to_hcd(ehci)->state != USB_STATE_HALT) {
writel (cmd & ~CMD_ASE, &ehci->regs->command);
wmb ();
// handshake later, if we need to
@@ -1019,7 +1020,7 @@
prev->qh_next = qh->qh_next;
wmb ();

- if (unlikely (ehci->hcd.state == USB_STATE_HALT)) {
+ if (unlikely (ehci_to_hcd(ehci)->state == USB_STATE_HALT)) {
/* if (unlikely (qh->reclaim != 0))
* this will recurse, probably not much
*/
diff -Nru a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c
--- a/drivers/usb/host/ehci-sched.c 2005-01-07 15:43:52 -08:00
+++ b/drivers/usb/host/ehci-sched.c 2005-01-07 15:43:52 -08:00
@@ -249,14 +249,14 @@
*/
status = handshake (&ehci->regs->status, STS_PSS, 0, 9 * 125);
if (status != 0) {
- ehci->hcd.state = USB_STATE_HALT;
+ ehci_to_hcd(ehci)->state = USB_STATE_HALT;
return status;
}

cmd = readl (&ehci->regs->command) | CMD_PSE;
writel (cmd, &ehci->regs->command);
/* posted write ... PSS happens later */
- ehci->hcd.state = USB_STATE_RUNNING;
+ ehci_to_hcd(ehci)->state = USB_STATE_RUNNING;

/* make sure ehci_work scans these */
ehci->next_uframe = readl (&ehci->regs->frame_index)
@@ -274,7 +274,7 @@
*/
status = handshake (&ehci->regs->status, STS_PSS, STS_PSS, 9 * 125);
if (status != 0) {
- ehci->hcd.state = USB_STATE_HALT;
+ ehci_to_hcd(ehci)->state = USB_STATE_HALT;
return status;
}

@@ -348,7 +348,7 @@
qh_get (qh);

/* update per-qh bandwidth for usbfs */
- hcd_to_bus (&ehci->hcd)->bandwidth_allocated += qh->period
+ ehci_to_hcd(ehci)->self.bandwidth_allocated += qh->period
? ((qh->usecs + qh->c_usecs) / qh->period)
: (qh->usecs * 8);

@@ -379,7 +379,7 @@
periodic_unlink (ehci, i, qh);

/* update per-qh bandwidth for usbfs */
- hcd_to_bus (&ehci->hcd)->bandwidth_allocated -= qh->period
+ ehci_to_hcd(ehci)->self.bandwidth_allocated -= qh->period
? ((qh->usecs + qh->c_usecs) / qh->period)
: (qh->usecs * 8);

@@ -618,7 +618,7 @@
BUG_ON (qh == 0);

/* ... update usbfs periodic stats */
- hcd_to_bus (&ehci->hcd)->bandwidth_int_reqs++;
+ ehci_to_hcd(ehci)->self.bandwidth_int_reqs++;

done:
spin_unlock_irqrestore (&ehci->lock, flags);
@@ -1258,7 +1258,7 @@
next_uframe = stream->next_uframe % mod;

if (unlikely (list_empty(&stream->td_list))) {
- hcd_to_bus (&ehci->hcd)->bandwidth_allocated
+ ehci_to_hcd(ehci)->self.bandwidth_allocated
+= stream->bandwidth;
ehci_vdbg (ehci,
"schedule devp %s ep%d%s-iso period %d start %d.%d\n",
@@ -1268,7 +1268,7 @@
next_uframe >> 3, next_uframe & 0x7);
stream->start = jiffies;
}
- hcd_to_bus (&ehci->hcd)->bandwidth_isoc_reqs++;
+ ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs++;

/* fill iTDs uframe by uframe */
for (packet = 0, itd = NULL; packet < urb->number_of_packets; ) {
@@ -1390,10 +1390,10 @@
ehci->periodic_sched--;
if (unlikely (!ehci->periodic_sched))
(void) disable_periodic (ehci);
- hcd_to_bus (&ehci->hcd)->bandwidth_isoc_reqs--;
+ ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs--;

if (unlikely (list_empty (&stream->td_list))) {
- hcd_to_bus (&ehci->hcd)->bandwidth_allocated
+ ehci_to_hcd(ehci)->self.bandwidth_allocated
-= stream->bandwidth;
ehci_vdbg (ehci,
"deschedule devp %s ep%d%s-iso\n",
@@ -1643,7 +1643,7 @@

if (list_empty(&stream->td_list)) {
/* usbfs ignores TT bandwidth */
- hcd_to_bus (&ehci->hcd)->bandwidth_allocated
+ ehci_to_hcd(ehci)->self.bandwidth_allocated
+= stream->bandwidth;
ehci_vdbg (ehci,
"sched dev%s ep%d%s-iso [%d] %dms/%04x\n",
@@ -1653,7 +1653,7 @@
stream->interval, le32_to_cpu (stream->splits));
stream->start = jiffies;
}
- hcd_to_bus (&ehci->hcd)->bandwidth_isoc_reqs++;
+ ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs++;

/* fill sITDs frame by frame */
for (packet = 0, sitd = NULL;
@@ -1753,10 +1753,10 @@
ehci->periodic_sched--;
if (!ehci->periodic_sched)
(void) disable_periodic (ehci);
- hcd_to_bus (&ehci->hcd)->bandwidth_isoc_reqs--;
+ ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs--;

if (list_empty (&stream->td_list)) {
- hcd_to_bus (&ehci->hcd)->bandwidth_allocated
+ ehci_to_hcd(ehci)->self.bandwidth_allocated
-= stream->bandwidth;
ehci_vdbg (ehci,
"deschedule devp %s ep%d%s-iso\n",
@@ -1860,7 +1860,7 @@
* Touches as few pages as possible: cache-friendly.
*/
now_uframe = ehci->next_uframe;
- if (HCD_IS_RUNNING (ehci->hcd.state))
+ if (HCD_IS_RUNNING (ehci_to_hcd(ehci)->state))
clock = readl (&ehci->regs->frame_index);
else
clock = now_uframe + mod - 1;
@@ -1894,7 +1894,7 @@
union ehci_shadow temp;
int live;

- live = HCD_IS_RUNNING (ehci->hcd.state);
+ live = HCD_IS_RUNNING (ehci_to_hcd(ehci)->state);
switch (type) {
case Q_TYPE_QH:
/* handle any completions */
@@ -1983,7 +1983,7 @@
if (now_uframe == clock) {
unsigned now;

- if (!HCD_IS_RUNNING (ehci->hcd.state))
+ if (!HCD_IS_RUNNING (ehci_to_hcd(ehci)->state))
break;
ehci->next_uframe = now_uframe;
now = readl (&ehci->regs->frame_index) % mod;
diff -Nru a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
--- a/drivers/usb/host/ehci.h 2005-01-07 15:43:52 -08:00
+++ b/drivers/usb/host/ehci.h 2005-01-07 15:43:52 -08:00
@@ -47,13 +47,6 @@
#define EHCI_MAX_ROOT_PORTS 15 /* see HCS_N_PORTS */

struct ehci_hcd { /* one per controller */
-
- /* glue to PCI and HCD framework */
- struct usb_hcd hcd; /* must come first! */
- struct ehci_caps __iomem *caps;
- struct ehci_regs __iomem *regs;
- __u32 hcs_params; /* cached register copy */
-
spinlock_t lock;

/* async schedule support */
@@ -91,6 +84,11 @@

unsigned is_arc_rh_tt:1; /* ARC roothub with TT */

+ /* glue to PCI and HCD framework */
+ struct ehci_caps __iomem *caps;
+ struct ehci_regs __iomem *regs;
+ __u32 hcs_params; /* cached register copy */
+
/* irq statistics */
#ifdef EHCI_STATS
struct ehci_stats stats;
@@ -100,8 +98,15 @@
#endif
};

-/* unwrap an HCD pointer to get an EHCI_HCD pointer */
-#define hcd_to_ehci(hcd_ptr) container_of(hcd_ptr, struct ehci_hcd, hcd)
+/* convert between an HCD pointer and the corresponding EHCI_HCD */
+static inline struct ehci_hcd *hcd_to_ehci (struct usb_hcd *hcd)
+{
+ return (struct ehci_hcd *) (hcd->hcd_priv);
+}
+static inline struct usb_hcd *ehci_to_hcd (struct ehci_hcd *ehci)
+{
+ return container_of ((void *) ehci, struct usb_hcd, hcd_priv);
+}


enum ehci_timer_action {

-
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