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USB: UHCI: Add support for big endian descriptors

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This patch adds support for universal host controllers that use
big endian descriptors. Support for BE descriptors requires a non-PCI
host controller. For kernels with PCI-only UHCI there should be no
change in behaviour.

This patch tries to replicate the technique used to support BE descriptors
in the EHCI HCD. Parts added to uhci-hcd.h are basically copy'n'paste from
ehci.h.

Signed-off-by: Jan Andersson <jan@gaisler.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jan Andersson 2011-05-18 10:44:51 +02:00 committed by Greg Kroah-Hartman
parent bab1ff1bda
commit 51e2f62fe7
5 changed files with 192 additions and 120 deletions
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4
drivers/usb/host/Kconfig
View file

@ -420,6 +420,10 @@ config USB_UHCI_BIG_ENDIAN_MMIO
bool
depends on USB_UHCI_SUPPORT_NON_PCI_HC
config USB_UHCI_BIG_ENDIAN_DESC
bool
depends on USB_UHCI_SUPPORT_NON_PCI_HC
config USB_FHCI_HCD
tristate "Freescale QE USB Host Controller support"
depends on USB && OF_GPIO && QE_GPIO && QUICC_ENGINE

71
drivers/usb/host/uhci-debug.c
View file

@ -37,7 +37,8 @@ static void lprintk(char *buf)
}
}
static int uhci_show_td(struct uhci_td *td, char *buf, int len, int space)
static int uhci_show_td(struct uhci_hcd *uhci, struct uhci_td *td, char *buf,
int len, int space)
{
char *out = buf;
char *spid;
@ -47,8 +48,9 @@ static int uhci_show_td(struct uhci_td *td, char *buf, int len, int space)
if (len < 160)
return 0;
status = td_status(td);
out += sprintf(out, "%*s[%p] link (%08x) ", space, "", td, le32_to_cpu(td->link));
status = td_status(uhci, td);
out += sprintf(out, "%*s[%p] link (%08x) ", space, "", td,
hc32_to_cpu(uhci, td->link));
out += sprintf(out, "e%d %s%s%s%s%s%s%s%s%s%sLength=%x ",
((status >> 27) & 3),
(status & TD_CTRL_SPD) ? "SPD " : "",
@ -63,7 +65,7 @@ static int uhci_show_td(struct uhci_td *td, char *buf, int len, int space)
(status & TD_CTRL_BITSTUFF) ? "BitStuff " : "",
status & 0x7ff);
token = td_token(td);
token = td_token(uhci, td);
switch (uhci_packetid(token)) {
case USB_PID_SETUP:
spid = "SETUP";
@ -86,12 +88,13 @@ static int uhci_show_td(struct uhci_td *td, char *buf, int len, int space)
(token >> 8) & 127,
(token & 0xff),
spid);
out += sprintf(out, "(buf=%08x)\n", le32_to_cpu(td->buffer));
out += sprintf(out, "(buf=%08x)\n", hc32_to_cpu(uhci, td->buffer));
return out - buf;
}
static int uhci_show_urbp(struct urb_priv *urbp, char *buf, int len, int space)
static int uhci_show_urbp(struct uhci_hcd *uhci, struct urb_priv *urbp,
char *buf, int len, int space)
{
char *out = buf;
struct uhci_td *td;
@ -130,9 +133,10 @@ static int uhci_show_urbp(struct urb_priv *urbp, char *buf, int len, int space)
if (urbp->qh->type != USB_ENDPOINT_XFER_ISOC &&
(++i <= 10 || debug > 2)) {
out += sprintf(out, "%*s%d: ", space + 2, "", i);
out += uhci_show_td(td, out, len - (out - buf), 0);
out += uhci_show_td(uhci, td, out,
len - (out - buf), 0);
} else {
if (td_status(td) & TD_CTRL_ACTIVE)
if (td_status(uhci, td) & TD_CTRL_ACTIVE)
++nactive;
else
++ninactive;
@ -151,7 +155,7 @@ static int uhci_show_qh(struct uhci_hcd *uhci,
{
char *out = buf;
int i, nurbs;
__le32 element = qh_element(qh);
__hc32 element = qh_element(qh);
char *qtype;
/* Try to make sure there's enough memory */
@ -168,7 +172,8 @@ static int uhci_show_qh(struct uhci_hcd *uhci,
out += sprintf(out, "%*s[%p] %s QH link (%08x) element (%08x)\n",
space, "", qh, qtype,
le32_to_cpu(qh->link), le32_to_cpu(element));
hc32_to_cpu(uhci, qh->link),
hc32_to_cpu(uhci, element));
if (qh->type == USB_ENDPOINT_XFER_ISOC)
out += sprintf(out, "%*s period %d phase %d load %d us, "
"frame %x desc [%p]\n",
@ -178,22 +183,22 @@ static int uhci_show_qh(struct uhci_hcd *uhci,
out += sprintf(out, "%*s period %d phase %d load %d us\n",
space, "", qh->period, qh->phase, qh->load);
if (element & UHCI_PTR_QH)
if (element & UHCI_PTR_QH(uhci))
out += sprintf(out, "%*s Element points to QH (bug?)\n", space, "");
if (element & UHCI_PTR_DEPTH)
if (element & UHCI_PTR_DEPTH(uhci))
out += sprintf(out, "%*s Depth traverse\n", space, "");
if (element & cpu_to_le32(8))
if (element & cpu_to_hc32(uhci, 8))
out += sprintf(out, "%*s Bit 3 set (bug?)\n", space, "");
if (!(element & ~(UHCI_PTR_QH | UHCI_PTR_DEPTH)))
if (!(element & ~(UHCI_PTR_QH(uhci) | UHCI_PTR_DEPTH(uhci))))
out += sprintf(out, "%*s Element is NULL (bug?)\n", space, "");
if (list_empty(&qh->queue)) {
out += sprintf(out, "%*s queue is empty\n", space, "");
if (qh == uhci->skel_async_qh)
out += uhci_show_td(uhci->term_td, out,
out += uhci_show_td(uhci, uhci->term_td, out,
len - (out - buf), 0);
} else {
struct urb_priv *urbp = list_entry(qh->queue.next,
@ -201,13 +206,13 @@ static int uhci_show_qh(struct uhci_hcd *uhci,
struct uhci_td *td = list_entry(urbp->td_list.next,
struct uhci_td, list);
if (element != LINK_TO_TD(td))
if (element != LINK_TO_TD(uhci, td))
out += sprintf(out, "%*s Element != First TD\n",
space, "");
i = nurbs = 0;
list_for_each_entry(urbp, &qh->queue, node) {
if (++i <= 10)
out += uhci_show_urbp(urbp, out,
out += uhci_show_urbp(uhci, urbp, out,
len - (out - buf), space + 2);
else
++nurbs;
@ -219,7 +224,8 @@ static int uhci_show_qh(struct uhci_hcd *uhci,
if (qh->dummy_td) {
out += sprintf(out, "%*s Dummy TD\n", space, "");
out += uhci_show_td(qh->dummy_td, out, len - (out - buf), 0);
out += uhci_show_td(uhci, qh->dummy_td, out,
len - (out - buf), 0);
}
return out - buf;
@ -346,8 +352,8 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len)
struct uhci_td *td;
struct list_head *tmp, *head;
int nframes, nerrs;
__le32 link;
__le32 fsbr_link;
__hc32 link;
__hc32 fsbr_link;
static const char * const qh_names[] = {
"unlink", "iso", "int128", "int64", "int32", "int16",
@ -375,7 +381,7 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len)
nframes = 10;
nerrs = 0;
for (i = 0; i < UHCI_NUMFRAMES; ++i) {
__le32 qh_dma;
__hc32 qh_dma;
j = 0;
td = uhci->frame_cpu[i];
@ -385,7 +391,7 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len)
if (nframes > 0) {
out += sprintf(out, "- Frame %d -> (%08x)\n",
i, le32_to_cpu(link));
i, hc32_to_cpu(uhci, link));
j = 1;
}
@ -394,7 +400,7 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len)
do {
td = list_entry(tmp, struct uhci_td, fl_list);
tmp = tmp->next;
if (link != LINK_TO_TD(td)) {
if (link != LINK_TO_TD(uhci, td)) {
if (nframes > 0)
out += sprintf(out, " link does "
"not match list entry!\n");
@ -402,7 +408,7 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len)
++nerrs;
}
if (nframes > 0)
out += uhci_show_td(td, out,
out += uhci_show_td(uhci, td, out,
len - (out - buf), 4);
link = td->link;
} while (tmp != head);
@ -414,11 +420,12 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len)
if (!j) {
out += sprintf(out,
"- Frame %d -> (%08x)\n",
i, le32_to_cpu(link));
i, hc32_to_cpu(uhci, link));
j = 1;
}
out += sprintf(out, " link does not match "
"QH (%08x)!\n", le32_to_cpu(qh_dma));
"QH (%08x)!\n",
hc32_to_cpu(uhci, qh_dma));
} else
++nerrs;
}
@ -439,11 +446,11 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len)
/* Last QH is the Terminating QH, it's different */
if (i == SKEL_TERM) {
if (qh_element(qh) != LINK_TO_TD(uhci->term_td))
if (qh_element(qh) != LINK_TO_TD(uhci, uhci->term_td))
out += sprintf(out, " skel_term_qh element is not set to term_td!\n");
link = fsbr_link;
if (!link)
link = LINK_TO_QH(uhci->skel_term_qh);
link = LINK_TO_QH(uhci, uhci->skel_term_qh);
goto check_qh_link;
}
@ -457,20 +464,20 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len)
out += uhci_show_qh(uhci, qh, out,
len - (out - buf), 4);
if (!fsbr_link && qh->skel >= SKEL_FSBR)
fsbr_link = LINK_TO_QH(qh);
fsbr_link = LINK_TO_QH(uhci, qh);
}
if ((cnt -= 10) > 0)
out += sprintf(out, " Skipped %d QHs\n", cnt);
link = UHCI_PTR_TERM;
link = UHCI_PTR_TERM(uhci);
if (i <= SKEL_ISO)
;
else if (i < SKEL_ASYNC)
link = LINK_TO_QH(uhci->skel_async_qh);
link = LINK_TO_QH(uhci, uhci->skel_async_qh);
else if (!uhci->fsbr_is_on)
;
else
link = LINK_TO_QH(uhci->skel_term_qh);
link = LINK_TO_QH(uhci, uhci->skel_term_qh);
check_qh_link:
if (qh->link != link)
out += sprintf(out, " last QH not linked to next skeleton!\n");

16
drivers/usb/host/uhci-hcd.c
View file

@ -92,7 +92,7 @@ static void uhci_get_current_frame_number(struct uhci_hcd *uhci);
/*
* Calculate the link pointer DMA value for the first Skeleton QH in a frame.
*/
static __le32 uhci_frame_skel_link(struct uhci_hcd *uhci, int frame)
static __hc32 uhci_frame_skel_link(struct uhci_hcd *uhci, int frame)
{
int skelnum;
@ -114,7 +114,7 @@ static __le32 uhci_frame_skel_link(struct uhci_hcd *uhci, int frame)
skelnum = 8 - (int) __ffs(frame | UHCI_NUMFRAMES);
if (skelnum <= 1)
skelnum = 9;
return LINK_TO_QH(uhci->skelqh[skelnum]);
return LINK_TO_QH(uhci, uhci->skelqh[skelnum]);
}
#include "uhci-debug.c"
@ -630,16 +630,16 @@ static int uhci_start(struct usb_hcd *hcd)
* 8 Interrupt queues; link all higher int queues to int1 = async
*/
for (i = SKEL_ISO + 1; i < SKEL_ASYNC; ++i)
uhci->skelqh[i]->link = LINK_TO_QH(uhci->skel_async_qh);
uhci->skel_async_qh->link = UHCI_PTR_TERM;
uhci->skel_term_qh->link = LINK_TO_QH(uhci->skel_term_qh);
uhci->skelqh[i]->link = LINK_TO_QH(uhci, uhci->skel_async_qh);
uhci->skel_async_qh->link = UHCI_PTR_TERM(uhci);
uhci->skel_term_qh->link = LINK_TO_QH(uhci, uhci->skel_term_qh);
/* This dummy TD is to work around a bug in Intel PIIX controllers */
uhci_fill_td(uhci->term_td, 0, uhci_explen(0) |
uhci_fill_td(uhci, uhci->term_td, 0, uhci_explen(0) |
(0x7f << TD_TOKEN_DEVADDR_SHIFT) | USB_PID_IN, 0);
uhci->term_td->link = UHCI_PTR_TERM;
uhci->term_td->link = UHCI_PTR_TERM(uhci);
uhci->skel_async_qh->element = uhci->skel_term_qh->element =
LINK_TO_TD(uhci->term_td);
LINK_TO_TD(uhci, uhci->term_td);
/*
* Fill the frame list: make all entries point to the proper

90
drivers/usb/host/uhci-hcd.h
View file

@ -78,11 +78,11 @@
#define USBPORT1EN 0x01
#define USBPORT2EN 0x02
#define UHCI_PTR_BITS cpu_to_le32(0x000F)
#define UHCI_PTR_TERM cpu_to_le32(0x0001)
#define UHCI_PTR_QH cpu_to_le32(0x0002)
#define UHCI_PTR_DEPTH cpu_to_le32(0x0004)
#define UHCI_PTR_BREADTH cpu_to_le32(0x0000)
#define UHCI_PTR_BITS(uhci) cpu_to_hc32((uhci), 0x000F)
#define UHCI_PTR_TERM(uhci) cpu_to_hc32((uhci), 0x0001)
#define UHCI_PTR_QH(uhci) cpu_to_hc32((uhci), 0x0002)
#define UHCI_PTR_DEPTH(uhci) cpu_to_hc32((uhci), 0x0004)
#define UHCI_PTR_BREADTH(uhci) cpu_to_hc32((uhci), 0x0000)
#define UHCI_NUMFRAMES 1024 /* in the frame list [array] */
#define UHCI_MAX_SOF_NUMBER 2047 /* in an SOF packet */
@ -98,6 +98,22 @@
#define QH_WAIT_TIMEOUT msecs_to_jiffies(200)
/*
* __hc32 and __hc16 are "Host Controller" types, they may be equivalent to
* __leXX (normally) or __beXX (given UHCI_BIG_ENDIAN_DESC), depending on
* the host controller implementation.
*
* To facilitate the strongest possible byte-order checking from "sparse"
* and so on, we use __leXX unless that's not practical.
*/
#ifdef CONFIG_USB_UHCI_BIG_ENDIAN_DESC
typedef __u32 __bitwise __hc32;
typedef __u16 __bitwise __hc16;
#else
#define __hc32 __le32
#define __hc16 __le16
#endif
/*
* Queue Headers
*/
@ -130,8 +146,8 @@
struct uhci_qh {
/* Hardware fields */
__le32 link; /* Next QH in the schedule */
__le32 element; /* Queue element (TD) pointer */
__hc32 link; /* Next QH in the schedule */
__hc32 element; /* Queue element (TD) pointer */
/* Software fields */
dma_addr_t dma_handle;
@ -170,7 +186,8 @@ struct uhci_qh {
*/
#define qh_element(qh) ACCESS_ONCE((qh)->element)
#define LINK_TO_QH(qh) (UHCI_PTR_QH | cpu_to_le32((qh)->dma_handle))
#define LINK_TO_QH(uhci, qh) (UHCI_PTR_QH((uhci)) | \
cpu_to_hc32((uhci), (qh)->dma_handle))
/*
@ -207,7 +224,7 @@ struct uhci_qh {
/*
* for TD <info>: (a.k.a. Token)
*/
#define td_token(td) le32_to_cpu((td)->token)
#define td_token(uhci, td) hc32_to_cpu((uhci), (td)->token)
#define TD_TOKEN_DEVADDR_SHIFT 8
#define TD_TOKEN_TOGGLE_SHIFT 19
#define TD_TOKEN_TOGGLE (1 << 19)
@ -240,10 +257,10 @@ struct uhci_qh {
*/
struct uhci_td {
/* Hardware fields */
__le32 link;
__le32 status;
__le32 token;
__le32 buffer;
__hc32 link;
__hc32 status;
__hc32 token;
__hc32 buffer;
/* Software fields */
dma_addr_t dma_handle;
@ -258,9 +275,10 @@ struct uhci_td {
* We need a special accessor for the control/status word because it is
* subject to asynchronous updates by the controller.
*/
#define td_status(td) le32_to_cpu(ACCESS_ONCE((td)->status))
#define td_status(uhci, td) hc32_to_cpu((uhci), \
ACCESS_ONCE((td)->status))
#define LINK_TO_TD(td) (cpu_to_le32((td)->dma_handle))
#define LINK_TO_TD(uhci, td) (cpu_to_hc32((uhci), (td)->dma_handle))
/*
@ -383,7 +401,7 @@ struct uhci_hcd {
spinlock_t lock;
dma_addr_t frame_dma_handle; /* Hardware frame list */
__le32 *frame;
__hc32 *frame;
void **frame_cpu; /* CPU's frame list */
enum uhci_rh_state rh_state;
@ -412,6 +430,7 @@ struct uhci_hcd {
unsigned int oc_low:1; /* OverCurrent bit active low */
unsigned int wait_for_hp:1; /* Wait for HP port reset */
unsigned int big_endian_mmio:1; /* Big endian registers */
unsigned int big_endian_desc:1; /* Big endian descriptors */
/* Support for port suspend/resume/reset */
unsigned long port_c_suspend; /* Bit-arrays of ports */
@ -603,4 +622,43 @@ static inline void uhci_writeb(const struct uhci_hcd *uhci, u8 val, int reg)
}
#endif /* CONFIG_USB_UHCI_SUPPORT_NON_PCI_HC */
/*
* The GRLIB GRUSBHC controller can use big endian format for its descriptors.
*
* UHCI controllers accessed through PCI work normally (little-endian
* everywhere), so we don't bother supporting a BE-only mode.
*/
#ifdef CONFIG_USB_UHCI_BIG_ENDIAN_DESC
#define uhci_big_endian_desc(u) ((u)->big_endian_desc)
/* cpu to uhci */
static inline __hc32 cpu_to_hc32(const struct uhci_hcd *uhci, const u32 x)
{
return uhci_big_endian_desc(uhci)
? (__force __hc32)cpu_to_be32(x)
: (__force __hc32)cpu_to_le32(x);
}
/* uhci to cpu */
static inline u32 hc32_to_cpu(const struct uhci_hcd *uhci, const __hc32 x)
{
return uhci_big_endian_desc(uhci)
? be32_to_cpu((__force __be32)x)
: le32_to_cpu((__force __le32)x);
}
#else
/* cpu to uhci */
static inline __hc32 cpu_to_hc32(const struct uhci_hcd *uhci, const u32 x)
{
return cpu_to_le32(x);
}
/* uhci to cpu */
static inline u32 hc32_to_cpu(const struct uhci_hcd *uhci, const __hc32 x)
{
return le32_to_cpu(x);
}
#endif
#endif

131
drivers/usb/host/uhci-q.c
View file

@ -29,12 +29,12 @@ static void uhci_set_next_interrupt(struct uhci_hcd *uhci)
{
if (uhci->is_stopped)
mod_timer(&uhci_to_hcd(uhci)->rh_timer, jiffies);
uhci->term_td->status |= cpu_to_le32(TD_CTRL_IOC);
uhci->term_td->status |= cpu_to_hc32(uhci, TD_CTRL_IOC);
}
static inline void uhci_clear_next_interrupt(struct uhci_hcd *uhci)
{
uhci->term_td->status &= ~cpu_to_le32(TD_CTRL_IOC);
uhci->term_td->status &= ~cpu_to_hc32(uhci, TD_CTRL_IOC);
}
@ -53,7 +53,7 @@ static void uhci_fsbr_on(struct uhci_hcd *uhci)
uhci->fsbr_is_on = 1;
lqh = list_entry(uhci->skel_async_qh->node.prev,
struct uhci_qh, node);
lqh->link = LINK_TO_QH(uhci->skel_term_qh);
lqh->link = LINK_TO_QH(uhci, uhci->skel_term_qh);
}
static void uhci_fsbr_off(struct uhci_hcd *uhci)
@ -65,7 +65,7 @@ static void uhci_fsbr_off(struct uhci_hcd *uhci)
uhci->fsbr_is_on = 0;
lqh = list_entry(uhci->skel_async_qh->node.prev,
struct uhci_qh, node);
lqh->link = UHCI_PTR_TERM;
lqh->link = UHCI_PTR_TERM(uhci);
}
static void uhci_add_fsbr(struct uhci_hcd *uhci, struct urb *urb)
@ -131,12 +131,12 @@ static void uhci_free_td(struct uhci_hcd *uhci, struct uhci_td *td)
dma_pool_free(uhci->td_pool, td, td->dma_handle);
}
static inline void uhci_fill_td(struct uhci_td *td, u32 status,
u32 token, u32 buffer)
static inline void uhci_fill_td(struct uhci_hcd *uhci, struct uhci_td *td,
u32 status, u32 token, u32 buffer)
{
td->status = cpu_to_le32(status);
td->token = cpu_to_le32(token);
td->buffer = cpu_to_le32(buffer);
td->status = cpu_to_hc32(uhci, status);
td->token = cpu_to_hc32(uhci, token);
td->buffer = cpu_to_hc32(uhci, buffer);
}
static void uhci_add_td_to_urbp(struct uhci_td *td, struct urb_priv *urbp)
@ -170,11 +170,11 @@ static inline void uhci_insert_td_in_frame_list(struct uhci_hcd *uhci,
td->link = ltd->link;
wmb();
ltd->link = LINK_TO_TD(td);
ltd->link = LINK_TO_TD(uhci, td);
} else {
td->link = uhci->frame[framenum];
wmb();
uhci->frame[framenum] = LINK_TO_TD(td);
uhci->frame[framenum] = LINK_TO_TD(uhci, td);
uhci->frame_cpu[framenum] = td;
}
}
@ -198,7 +198,7 @@ static inline void uhci_remove_td_from_frame_list(struct uhci_hcd *uhci,
ntd = list_entry(td->fl_list.next,
struct uhci_td,
fl_list);
uhci->frame[td->frame] = LINK_TO_TD(ntd);
uhci->frame[td->frame] = LINK_TO_TD(uhci, ntd);
uhci->frame_cpu[td->frame] = ntd;
}
} else {
@ -255,8 +255,8 @@ static struct uhci_qh *uhci_alloc_qh(struct uhci_hcd *uhci,
memset(qh, 0, sizeof(*qh));
qh->dma_handle = dma_handle;
qh->element = UHCI_PTR_TERM;
qh->link = UHCI_PTR_TERM;
qh->element = UHCI_PTR_TERM(uhci);
qh->link = UHCI_PTR_TERM(uhci);
INIT_LIST_HEAD(&qh->queue);
INIT_LIST_HEAD(&qh->node);
@ -348,9 +348,9 @@ static int uhci_cleanup_queue(struct uhci_hcd *uhci, struct uhci_qh *qh,
/* If the QH element pointer is UHCI_PTR_TERM then then currently
* executing URB has already been unlinked, so this one isn't it. */
if (qh_element(qh) == UHCI_PTR_TERM)
if (qh_element(qh) == UHCI_PTR_TERM(uhci))
goto done;
qh->element = UHCI_PTR_TERM;
qh->element = UHCI_PTR_TERM(uhci);
/* Control pipes don't have to worry about toggles */
if (qh->type == USB_ENDPOINT_XFER_CONTROL)
@ -360,7 +360,7 @@ static int uhci_cleanup_queue(struct uhci_hcd *uhci, struct uhci_qh *qh,
WARN_ON(list_empty(&urbp->td_list));
td = list_entry(urbp->td_list.next, struct uhci_td, list);
qh->needs_fixup = 1;
qh->initial_toggle = uhci_toggle(td_token(td));
qh->initial_toggle = uhci_toggle(td_token(uhci, td));
done:
return ret;
@ -370,7 +370,8 @@ static int uhci_cleanup_queue(struct uhci_hcd *uhci, struct uhci_qh *qh,
* Fix up the data toggles for URBs in a queue, when one of them
* terminates early (short transfer, error, or dequeued).
*/
static void uhci_fixup_toggles(struct uhci_qh *qh, int skip_first)
static void uhci_fixup_toggles(struct uhci_hcd *uhci, struct uhci_qh *qh,
int skip_first)
{
struct urb_priv *urbp = NULL;
struct uhci_td *td;
@ -384,7 +385,7 @@ static void uhci_fixup_toggles(struct uhci_qh *qh, int skip_first)
/* When starting with the first URB, if the QH element pointer is
* still valid then we know the URB's toggles are okay. */
else if (qh_element(qh) != UHCI_PTR_TERM)
else if (qh_element(qh) != UHCI_PTR_TERM(uhci))
toggle = 2;
/* Fix up the toggle for the URBs in the queue. Normally this
@ -396,15 +397,15 @@ static void uhci_fixup_toggles(struct uhci_qh *qh, int skip_first)
/* If the first TD has the right toggle value, we don't
* need to change any toggles in this URB */
td = list_entry(urbp->td_list.next, struct uhci_td, list);
if (toggle > 1 || uhci_toggle(td_token(td)) == toggle) {
if (toggle > 1 || uhci_toggle(td_token(uhci, td)) == toggle) {
td = list_entry(urbp->td_list.prev, struct uhci_td,
list);
toggle = uhci_toggle(td_token(td)) ^ 1;
toggle = uhci_toggle(td_token(uhci, td)) ^ 1;
/* Otherwise all the toggles in the URB have to be switched */
} else {
list_for_each_entry(td, &urbp->td_list, list) {
td->token ^= cpu_to_le32(
td->token ^= cpu_to_hc32(uhci,
TD_TOKEN_TOGGLE);
toggle ^= 1;
}
@ -441,7 +442,7 @@ static void link_interrupt(struct uhci_hcd *uhci, struct uhci_qh *qh)
pqh = list_entry(qh->node.prev, struct uhci_qh, node);
qh->link = pqh->link;
wmb();
pqh->link = LINK_TO_QH(qh);
pqh->link = LINK_TO_QH(uhci, qh);
}
/*
@ -451,7 +452,7 @@ static void link_interrupt(struct uhci_hcd *uhci, struct uhci_qh *qh)
static void link_async(struct uhci_hcd *uhci, struct uhci_qh *qh)
{
struct uhci_qh *pqh;
__le32 link_to_new_qh;
__hc32 link_to_new_qh;
/* Find the predecessor QH for our new one and insert it in the list.
* The list of QHs is expected to be short, so linear search won't
@ -465,7 +466,7 @@ static void link_async(struct uhci_hcd *uhci, struct uhci_qh *qh)
/* Link it into the schedule */
qh->link = pqh->link;
wmb();
link_to_new_qh = LINK_TO_QH(qh);
link_to_new_qh = LINK_TO_QH(uhci, qh);
pqh->link = link_to_new_qh;
/* If this is now the first FSBR QH, link the terminating skeleton
@ -483,13 +484,13 @@ static void uhci_activate_qh(struct uhci_hcd *uhci, struct uhci_qh *qh)
/* Set the element pointer if it isn't set already.
* This isn't needed for Isochronous queues, but it doesn't hurt. */
if (qh_element(qh) == UHCI_PTR_TERM) {
if (qh_element(qh) == UHCI_PTR_TERM(uhci)) {
struct urb_priv *urbp = list_entry(qh->queue.next,
struct urb_priv, node);
struct uhci_td *td = list_entry(urbp->td_list.next,
struct uhci_td, list);
qh->element = LINK_TO_TD(td);
qh->element = LINK_TO_TD(uhci, td);
}
/* Treat the queue as if it has just advanced */
@ -533,7 +534,7 @@ static void unlink_interrupt(struct uhci_hcd *uhci, struct uhci_qh *qh)
static void unlink_async(struct uhci_hcd *uhci, struct uhci_qh *qh)
{
struct uhci_qh *pqh;
__le32 link_to_next_qh = qh->link;
__hc32 link_to_next_qh = qh->link;
pqh = list_entry(qh->node.prev, struct uhci_qh, node);
pqh->link = link_to_next_qh;
@ -757,8 +758,8 @@ static void uhci_free_urb_priv(struct uhci_hcd *uhci,
/*
* Map status to standard result codes
*
* <status> is (td_status(td) & 0xF60000), a.k.a.
* uhci_status_bits(td_status(td)).
* <status> is (td_status(uhci, td) & 0xF60000), a.k.a.
* uhci_status_bits(td_status(uhci, td)).
* Note: <status> does not include the TD_CTRL_NAK bit.
* <dir_out> is True for output TDs and False for input TDs.
*/
@ -794,7 +795,7 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb,
int maxsze = le16_to_cpu(qh->hep->desc.wMaxPacketSize);
int len = urb->transfer_buffer_length;
dma_addr_t data = urb->transfer_dma;
__le32 *plink;
__hc32 *plink;
struct urb_priv *urbp = urb->hcpriv;
int skel;
@ -811,7 +812,7 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb,
*/
td = qh->dummy_td;
uhci_add_td_to_urbp(td, urbp);
uhci_fill_td(td, status, destination | uhci_explen(8),
uhci_fill_td(uhci, td, status, destination | uhci_explen(8),
urb->setup_dma);
plink = &td->link;
status |= TD_CTRL_ACTIVE;
@ -844,14 +845,14 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb,
td = uhci_alloc_td(uhci);
if (!td)
goto nomem;
*plink = LINK_TO_TD(td);
*plink = LINK_TO_TD(uhci, td);
/* Alternate Data0/1 (start with Data1) */
destination ^= TD_TOKEN_TOGGLE;
uhci_add_td_to_urbp(td, urbp);
uhci_fill_td(td, status, destination | uhci_explen(pktsze),
data);
uhci_fill_td(uhci, td, status,
destination | uhci_explen(pktsze), data);
plink = &td->link;
data += pktsze;
@ -864,14 +865,14 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb,
td = uhci_alloc_td(uhci);
if (!td)
goto nomem;
*plink = LINK_TO_TD(td);
*plink = LINK_TO_TD(uhci, td);
/* Change direction for the status transaction */
destination ^= (USB_PID_IN ^ USB_PID_OUT);
destination |= TD_TOKEN_TOGGLE; /* End in Data1 */
uhci_add_td_to_urbp(td, urbp);
uhci_fill_td(td, status | TD_CTRL_IOC,
uhci_fill_td(uhci, td, status | TD_CTRL_IOC,
destination | uhci_explen(0), 0);
plink = &td->link;
@ -881,11 +882,11 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb,
td = uhci_alloc_td(uhci);
if (!td)
goto nomem;
*plink = LINK_TO_TD(td);
*plink = LINK_TO_TD(uhci, td);
uhci_fill_td(td, 0, USB_PID_OUT | uhci_explen(0), 0);
uhci_fill_td(uhci, td, 0, USB_PID_OUT | uhci_explen(0), 0);
wmb();
qh->dummy_td->status |= cpu_to_le32(TD_CTRL_ACTIVE);
qh->dummy_td->status |= cpu_to_hc32(uhci, TD_CTRL_ACTIVE);
qh->dummy_td = td;
/* Low-speed transfers get a different queue, and won't hog the bus.
@ -921,7 +922,7 @@ static int uhci_submit_common(struct uhci_hcd *uhci, struct urb *urb,
int len = urb->transfer_buffer_length;
int this_sg_len;
dma_addr_t data;
__le32 *plink;
__hc32 *plink;
struct urb_priv *urbp = urb->hcpriv;
unsigned int toggle;
struct scatterlist *sg;
@ -974,10 +975,10 @@ static int uhci_submit_common(struct uhci_hcd *uhci, struct urb *urb,
td = uhci_alloc_td(uhci);
if (!td)
goto nomem;
*plink = LINK_TO_TD(td);
*plink = LINK_TO_TD(uhci, td);
}
uhci_add_td_to_urbp(td, urbp);
uhci_fill_td(td, status,
uhci_fill_td(uhci, td, status,
destination | uhci_explen(pktsze) |
(toggle << TD_TOKEN_TOGGLE_SHIFT),
data);
@ -1010,10 +1011,10 @@ static int uhci_submit_common(struct uhci_hcd *uhci, struct urb *urb,
td = uhci_alloc_td(uhci);
if (!td)
goto nomem;
*plink = LINK_TO_TD(td);
*plink = LINK_TO_TD(uhci, td);
uhci_add_td_to_urbp(td, urbp);
uhci_fill_td(td, status,
uhci_fill_td(uhci, td, status,
destination | uhci_explen(0) |
(toggle << TD_TOKEN_TOGGLE_SHIFT),
data);
@ -1028,7 +1029,7 @@ static int uhci_submit_common(struct uhci_hcd *uhci, struct urb *urb,
* fast side but not enough to justify delaying an interrupt
* more than 2 or 3 URBs, so we will ignore the URB_NO_INTERRUPT
* flag setting. */
td->status |= cpu_to_le32(TD_CTRL_IOC);
td->status |= cpu_to_hc32(uhci, TD_CTRL_IOC);
/*
* Build the new dummy TD and activate the old one
@ -1036,11 +1037,11 @@ static int uhci_submit_common(struct uhci_hcd *uhci, struct urb *urb,
td = uhci_alloc_td(uhci);
if (!td)
goto nomem;
*plink = LINK_TO_TD(td);
*plink = LINK_TO_TD(uhci, td);
uhci_fill_td(td, 0, USB_PID_OUT | uhci_explen(0), 0);
uhci_fill_td(uhci, td, 0, USB_PID_OUT | uhci_explen(0), 0);
wmb();
qh->dummy_td->status |= cpu_to_le32(TD_CTRL_ACTIVE);
qh->dummy_td->status |= cpu_to_hc32(uhci, TD_CTRL_ACTIVE);
qh->dummy_td = td;
usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
@ -1133,7 +1134,7 @@ static int uhci_fixup_short_transfer(struct uhci_hcd *uhci,
* the queue at the status stage transaction, which is
* the last TD. */
WARN_ON(list_empty(&urbp->td_list));
qh->element = LINK_TO_TD(td);
qh->element = LINK_TO_TD(uhci, td);
tmp = td->list.prev;
ret = -EINPROGRESS;
@ -1142,8 +1143,9 @@ static int uhci_fixup_short_transfer(struct uhci_hcd *uhci,
/* When a bulk/interrupt transfer is short, we have to
* fix up the toggles of the following URBs on the queue
* before restarting the queue at the next URB. */
qh->initial_toggle = uhci_toggle(td_token(qh->post_td)) ^ 1;
uhci_fixup_toggles(qh, 1);
qh->initial_toggle =
uhci_toggle(td_token(uhci, qh->post_td)) ^ 1;
uhci_fixup_toggles(uhci, qh, 1);
if (list_empty(&urbp->td_list))
td = qh->post_td;
@ -1178,7 +1180,7 @@ static int uhci_result_common(struct uhci_hcd *uhci, struct urb *urb)
unsigned int ctrlstat;
int len;
ctrlstat = td_status(td);
ctrlstat = td_status(uhci, td);
status = uhci_status_bits(ctrlstat);
if (status & TD_CTRL_ACTIVE)
return -EINPROGRESS;
@ -1188,7 +1190,7 @@ static int uhci_result_common(struct uhci_hcd *uhci, struct urb *urb)
if (status) {
ret = uhci_map_status(status,
uhci_packetout(td_token(td)));
uhci_packetout(td_token(uhci, td)));
if ((debug == 1 && ret != -EPIPE) || debug > 1) {
/* Some debugging code */
dev_dbg(&urb->dev->dev,
@ -1204,7 +1206,7 @@ static int uhci_result_common(struct uhci_hcd *uhci, struct urb *urb)
}
/* Did we receive a short packet? */
} else if (len < uhci_expected_length(td_token(td))) {
} else if (len < uhci_expected_length(td_token(uhci, td))) {
/* For control transfers, go to the status TD if
* this isn't already the last data TD */
@ -1236,10 +1238,10 @@ static int uhci_result_common(struct uhci_hcd *uhci, struct urb *urb)
if (ret < 0) {
/* Note that the queue has stopped and save
* the next toggle value */
qh->element = UHCI_PTR_TERM;
qh->element = UHCI_PTR_TERM(uhci);
qh->is_stopped = 1;
qh->needs_fixup = (qh->type != USB_ENDPOINT_XFER_CONTROL);
qh->initial_toggle = uhci_toggle(td_token(td)) ^
qh->initial_toggle = uhci_toggle(td_token(uhci, td)) ^
(ret == -EREMOTEIO);
} else /* Short packet received */
@ -1335,14 +1337,14 @@ static int uhci_submit_isochronous(struct uhci_hcd *uhci, struct urb *urb,
return -ENOMEM;
uhci_add_td_to_urbp(td, urbp);
uhci_fill_td(td, status, destination |
uhci_fill_td(uhci, td, status, destination |
uhci_explen(urb->iso_frame_desc[i].length),
urb->transfer_dma +
urb->iso_frame_desc[i].offset);
}
/* Set the interrupt-on-completion flag on the last packet. */
td->status |= cpu_to_le32(TD_CTRL_IOC);
td->status |= cpu_to_hc32(uhci, TD_CTRL_IOC);
/* Add the TDs to the frame list */
frame = urb->start_frame;
@ -1378,7 +1380,7 @@ static int uhci_result_isochronous(struct uhci_hcd *uhci, struct urb *urb)
uhci_remove_tds_from_frame(uhci, qh->iso_frame);
ctrlstat = td_status(td);
ctrlstat = td_status(uhci, td);
if (ctrlstat & TD_CTRL_ACTIVE) {
status = -EXDEV; /* TD was added too late? */
} else {
@ -1629,7 +1631,7 @@ static void uhci_scan_qh(struct uhci_hcd *uhci, struct uhci_qh *qh)
* queue, the QH can now be re-activated. */
if (!list_empty(&qh->queue)) {
if (qh->needs_fixup)
uhci_fixup_toggles(qh, 0);
uhci_fixup_toggles(uhci, qh, 0);
/* If the first URB on the queue wants FSBR but its time
* limit has expired, set the next TD to interrupt on
@ -1639,7 +1641,7 @@ static void uhci_scan_qh(struct uhci_hcd *uhci, struct uhci_qh *qh)
struct uhci_td *td = list_entry(urbp->td_list.next,
struct uhci_td, list);
td->status |= __cpu_to_le32(TD_CTRL_IOC);
td->status |= cpu_to_hc32(uhci, TD_CTRL_IOC);
}
uhci_activate_qh(uhci, qh);
@ -1686,7 +1688,7 @@ static int uhci_advance_check(struct uhci_hcd *uhci, struct uhci_qh *qh)
} else {
urbp = list_entry(qh->queue.next, struct urb_priv, node);
td = list_entry(urbp->td_list.next, struct uhci_td, list);
status = td_status(td);
status = td_status(uhci, td);
if (!(status & TD_CTRL_ACTIVE)) {
/* We're okay, the queue has advanced */
@ -1704,7 +1706,8 @@ static int uhci_advance_check(struct uhci_hcd *uhci, struct uhci_qh *qh)
if (time_after(jiffies, qh->advance_jiffies + QH_WAIT_TIMEOUT)) {
/* Detect the Intel bug and work around it */
if (qh->post_td && qh_element(qh) == LINK_TO_TD(qh->post_td)) {
if (qh->post_td && qh_element(qh) ==
LINK_TO_TD(uhci, qh->post_td)) {
qh->element = qh->post_td->link;
qh->advance_jiffies = jiffies;
ret = 1;