/*
* Copyright (c) 2001-2002 by David Brownell
- *
+ *
* 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
for (i = 0; i < HCS_N_PORTS (params); i++) {
// FIXME MIPS won't readb() ...
byte = readb (&ehci->caps->portroute[(i>>1)]);
- sprintf(tmp, "%d ",
+ sprintf(tmp, "%d ",
((i & 0x1) ? ((byte)&0xf) : ((byte>>4)&0xf)));
strcat(buf, tmp);
}
}
static void __attribute__((__unused__))
-dbg_itd (const char *label, struct ehci_hcd *ehci, struct ehci_itd *itd)
+dbg_itd (const char *label, struct ehci_hcd *ehci, struct ehci_itd *itd)
{
ehci_dbg (ehci, "%s [%d] itd %p, next %08x, urb %p\n",
label, itd->frame, itd, le32_to_cpu(itd->hw_next), itd->urb);
ehci_dbg (ehci,
- " trans: %08x %08x %08x %08x %08x %08x %08x %08x\n",
+ " trans: %08x %08x %08x %08x %08x %08x %08x %08x\n",
le32_to_cpu(itd->hw_transaction[0]),
le32_to_cpu(itd->hw_transaction[1]),
le32_to_cpu(itd->hw_transaction[2]),
le32_to_cpu(itd->hw_transaction[6]),
le32_to_cpu(itd->hw_transaction[7]));
ehci_dbg (ehci,
- " buf: %08x %08x %08x %08x %08x %08x %08x\n",
+ " buf: %08x %08x %08x %08x %08x %08x %08x\n",
le32_to_cpu(itd->hw_bufp[0]),
le32_to_cpu(itd->hw_bufp[1]),
le32_to_cpu(itd->hw_bufp[2]),
}
static void __attribute__((__unused__))
-dbg_sitd (const char *label, struct ehci_hcd *ehci, struct ehci_sitd *sitd)
+dbg_sitd (const char *label, struct ehci_hcd *ehci, struct ehci_sitd *sitd)
{
ehci_dbg (ehci, "%s [%d] sitd %p, next %08x, urb %p\n",
label, sitd->frame, sitd, le32_to_cpu(sitd->hw_next), sitd->urb);
ehci_dbg (ehci,
- " addr %08x sched %04x result %08x buf %08x %08x\n",
+ " addr %08x sched %04x result %08x buf %08x %08x\n",
le32_to_cpu(sitd->hw_fullspeed_ep),
le32_to_cpu(sitd->hw_uframe),
le32_to_cpu(sitd->hw_results),
/*
* Copyright (c) 2000-2004 by David Brownell
- *
+ *
* 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
* 2002-08-06 Handling for bulk and interrupt transfers is mostly shared;
* only scheduling is different, no arbitrary limitations.
* 2002-07-25 Sanity check PCI reads, mostly for better cardbus support,
- * clean up HC run state handshaking.
+ * clean up HC run state handshaking.
* 2002-05-24 Preliminary FS/LS interrupts, using scheduling shortcuts
* 2002-05-11 Clear TT errors for FS/LS ctrl/bulk. Fill in some other
* missing pieces: enabling 64bit dma, handoff from BIOS/SMM.
/* controllers may cache some of the periodic schedule ... */
hcc_params = readl(&ehci->caps->hcc_params);
- if (HCC_ISOC_CACHE(hcc_params)) // full frame cache
+ if (HCC_ISOC_CACHE(hcc_params)) // full frame cache
ehci->i_thresh = 8;
else // N microframes cached
ehci->i_thresh = 2 + HCC_ISOC_THRES(hcc_params);
/*
* Copyright (C) 2001-2004 by David Brownell
- *
+ *
* 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
/* re-init operational registers in case we lost power */
if (readl (&ehci->regs->intr_enable) == 0) {
- /* at least some APM implementations will try to deliver
+ /* at least some APM implementations will try to deliver
* IRQs right away, so delay them until we're ready.
- */
- intr_enable = 1;
+ */
+ intr_enable = 1;
writel (0, &ehci->regs->segment);
writel (ehci->periodic_dma, &ehci->regs->frame_list);
writel ((u32)ehci->async->qh_dma, &ehci->regs->async_next);
buf [1] = 0;
retval++;
}
-
+
/* no hub change reports (bit 0) for now (power, ...) */
/* port N changes (bit N)? */
/*-------------------------------------------------------------------------*/
-#define PORT_WAKE_BITS (PORT_WKOC_E|PORT_WKDISC_E|PORT_WKCONN_E)
+#define PORT_WAKE_BITS (PORT_WKOC_E|PORT_WKDISC_E|PORT_WKCONN_E)
static int ehci_hub_control (
struct usb_hcd *hcd,
/*
* Copyright (c) 2001 by David Brownell
- *
+ *
* 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
* - data used only by the HCD ... kmalloc is fine
* - async and periodic schedules, shared by HC and HCD ... these
* need to use dma_pool or dma_alloc_coherent
- * - driver buffers, read/written by HC ... single shot DMA mapped
+ * - driver buffers, read/written by HC ... single shot DMA mapped
*
* There's also PCI "register" data, which is memory mapped.
* No memory seen by this driver is pageable.
/*-------------------------------------------------------------------------*/
-/* The queue heads and transfer descriptors are managed from pools tied
+/* The queue heads and transfer descriptors are managed from pools tied
* to each of the "per device" structures.
* This is the initialisation and cleanup code.
*/
int i;
/* QTDs for control/bulk/intr transfers */
- ehci->qtd_pool = dma_pool_create ("ehci_qtd",
+ ehci->qtd_pool = dma_pool_create ("ehci_qtd",
ehci_to_hcd(ehci)->self.controller,
sizeof (struct ehci_qtd),
32 /* byte alignment (for hw parts) */,
}
/* QHs for control/bulk/intr transfers */
- ehci->qh_pool = dma_pool_create ("ehci_qh",
+ ehci->qh_pool = dma_pool_create ("ehci_qh",
ehci_to_hcd(ehci)->self.controller,
sizeof (struct ehci_qh),
32 /* byte alignment (for hw parts) */,
}
/* ITD for high speed ISO transfers */
- ehci->itd_pool = dma_pool_create ("ehci_itd",
+ ehci->itd_pool = dma_pool_create ("ehci_itd",
ehci_to_hcd(ehci)->self.controller,
sizeof (struct ehci_itd),
32 /* byte alignment (for hw parts) */,
}
/* SITD for full/low speed split ISO transfers */
- ehci->sitd_pool = dma_pool_create ("ehci_sitd",
+ ehci->sitd_pool = dma_pool_create ("ehci_sitd",
ehci_to_hcd(ehci)->self.controller,
sizeof (struct ehci_sitd),
32 /* byte alignment (for hw parts) */,
/*
* Copyright (C) 2001-2004 by David Brownell
- *
+ *
* 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
* ISO traffic uses "ISO TD" (itd, and sitd) records, and (along with
* interrupts) needs careful scheduling. Performance improvements can be
* an ongoing challenge. That's in "ehci-sched.c".
- *
+ *
* USB 1.1 devices are handled (a) by "companion" OHCI or UHCI root hubs,
* or otherwise through transaction translators (TTs) in USB 2.0 hubs using
* (b) special fields in qh entries or (c) split iso entries. TTs will
&& ((token & QTD_STS_MMF) != 0
|| QTD_CERR(token) == 0)
&& (!ehci_is_TDI(ehci)
- || urb->dev->tt->hub !=
+ || urb->dev->tt->hub !=
ehci_to_hcd(ehci)->self.root_hub)) {
#ifdef DEBUG
struct usb_device *tt = urb->dev->tt->hub;
*/
if (likely (urb->status == -EINPROGRESS))
continue;
-
+
/* issue status after short control reads */
if (unlikely (do_status != 0)
&& QTD_PID (token) == 0 /* OUT */) {
wmb ();
}
}
-
+
/* remove it from the queue */
spin_lock (&urb->lock);
qtd_copy_status (ehci, urb, qtd->length, token);
/* for zero length DATA stages, STATUS is always IN */
if (len == 0)
token |= (1 /* "in" */ << 8);
- }
+ }
/*
* data transfer stage: buffer setup
}
break;
default:
- dbg ("bogus dev %p speed %d", urb->dev, urb->dev->speed);
+ dbg ("bogus dev %p speed %d", urb->dev, urb->dev->speed);
done:
qh_put (qh);
return NULL;
// qh->hw_next = cpu_to_le32 (qh->qh_dma);
qh->qh_state = QH_STATE_IDLE;
qh->qh_next.qh = NULL;
- qh_put (qh); // refcount from reclaim
+ qh_put (qh); // refcount from reclaim
/* other unlink(s) may be pending (in QH_STATE_UNLINK_WAIT) */
next = qh->reclaim;
timer_action_done (ehci, TIMER_ASYNC_OFF);
}
return;
- }
+ }
qh->qh_state = QH_STATE_UNLINK;
ehci->reclaim = qh = qh_get (qh);
if (unlikely (ehci_to_hcd(ehci)->state == HC_STATE_HALT)) {
/* if (unlikely (qh->reclaim != 0))
- * this will recurse, probably not much
+ * this will recurse, probably not much
*/
end_unlink_async (ehci, NULL);
return;
/*
* Copyright (c) 2001-2004 by David Brownell
* Copyright (c) 2003 Michal Sojka, for high-speed iso transfers
- *
+ *
* 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
/*-------------------------------------------------------------------------*/
static int check_period (
- struct ehci_hcd *ehci,
+ struct ehci_hcd *ehci,
unsigned frame,
unsigned uframe,
unsigned period,
/*
* 80% periodic == 100 usec/uframe available
- * convert "usecs we need" to "max already claimed"
+ * convert "usecs we need" to "max already claimed"
*/
usecs = 100 - usecs;
}
static int check_intr_schedule (
- struct ehci_hcd *ehci,
+ struct ehci_hcd *ehci,
unsigned frame,
unsigned uframe,
const struct ehci_qh *qh,
__le32 *c_maskp
)
{
- int retval = -ENOSPC;
+ int retval = -ENOSPC;
u8 mask = 0;
if (qh->c_usecs && uframe >= 6) /* FSTN territory? */
/* Make sure this tt's buffer is also available for CSPLITs.
* We pessimize a bit; probably the typical full speed case
* doesn't need the second CSPLIT.
- *
+ *
* NOTE: both SPLIT and CSPLIT could be checked in just
* one smart pass...
*/
*/
static int qh_schedule (struct ehci_hcd *ehci, struct ehci_qh *qh)
{
- int status;
+ int status;
unsigned uframe;
__le32 c_mask;
unsigned frame; /* 0..(qh->period - 1), or NO_FRAME */
ehci_dbg (ehci, "reused qh %p schedule\n", qh);
/* stuff into the periodic schedule */
- status = qh_link_periodic (ehci, qh);
+ status = qh_link_periodic (ehci, qh);
done:
return status;
}
status = -ESHUTDOWN;
else
status = iso_stream_schedule (ehci, urb, stream);
- if (likely (status == 0))
+ if (likely (status == 0))
itd_link_urb (ehci, urb, ehci->periodic_size << 3, stream);
spin_unlock_irqrestore (&ehci->lock, flags);
if (packet->buf1 != (buf & ~(u64)0x0fff))
packet->cross = 1;
- /* OUT uses multiple start-splits */
+ /* OUT uses multiple start-splits */
if (stream->bEndpointAddress & USB_DIR_IN)
continue;
length = (length + 187) / 188;
/*-------------------------------------------------------------------------*/
#define SITD_ERRS (SITD_STS_ERR | SITD_STS_DBE | SITD_STS_BABBLE \
- | SITD_STS_XACT | SITD_STS_MMF)
+ | SITD_STS_XACT | SITD_STS_MMF)
static unsigned
sitd_complete (
status = -ESHUTDOWN;
else
status = iso_stream_schedule (ehci, urb, stream);
- if (status == 0)
+ if (status == 0)
sitd_link_urb (ehci, urb, ehci->periodic_size << 3, stream);
spin_unlock_irqrestore (&ehci->lock, flags);
now_uframe++;
now_uframe %= mod;
}
- }
+ }
}
/*
* Copyright (c) 2001-2002 by David Brownell
- *
+ *
* 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
#endif
};
-/* convert between an HCD pointer and the corresponding EHCI_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);
#define HCS_INDICATOR(p) ((p)&(1 << 16)) /* true: has port indicators */
#define HCS_N_CC(p) (((p)>>12)&0xf) /* bits 15:12, #companion HCs */
#define HCS_N_PCC(p) (((p)>>8)&0xf) /* bits 11:8, ports per CC */
-#define HCS_PORTROUTED(p) ((p)&(1 << 7)) /* true: port routing */
-#define HCS_PPC(p) ((p)&(1 << 4)) /* true: port power control */
+#define HCS_PORTROUTED(p) ((p)&(1 << 7)) /* true: port routing */
+#define HCS_PPC(p) ((p)&(1 << 4)) /* true: port power control */
#define HCS_N_PORTS(p) (((p)>>0)&0xf) /* bits 3:0, ports on HC */
u32 hcc_params; /* HCCPARAMS - offset 0x8 */
#define CMD_LRESET (1<<7) /* partial reset (no ports, etc) */
#define CMD_IAAD (1<<6) /* "doorbell" interrupt async advance */
#define CMD_ASE (1<<5) /* async schedule enable */
-#define CMD_PSE (1<<4) /* periodic schedule enable */
+#define CMD_PSE (1<<4) /* periodic schedule enable */
/* 3:2 is periodic frame list size */
#define CMD_RESET (1<<1) /* reset HC not bus */
#define CMD_RUN (1<<0) /* start/stop HC */
/* FRINDEX: offset 0x0C */
u32 frame_index; /* current microframe number */
/* CTRLDSSEGMENT: offset 0x10 */
- u32 segment; /* address bits 63:32 if needed */
+ u32 segment; /* address bits 63:32 if needed */
/* PERIODICLISTBASE: offset 0x14 */
- u32 frame_list; /* points to periodic list */
+ u32 frame_list; /* points to periodic list */
/* ASYNCLISTADDR: offset 0x18 */
u32 async_next; /* address of next async queue head */
/*
* EHCI Specification 0.95 Section 3.5
- * QTD: describe data transfer components (buffer, direction, ...)
+ * QTD: describe data transfer components (buffer, direction, ...)
* See Fig 3-6 "Queue Element Transfer Descriptor Block Diagram".
*
* These are associated only with "QH" (Queue Head) structures,
/* first part defined by EHCI spec */
__le32 hw_next; /* see EHCI 3.5.1 */
__le32 hw_alt_next; /* see EHCI 3.5.2 */
- __le32 hw_token; /* see EHCI 3.5.3 */
+ __le32 hw_token; /* see EHCI 3.5.3 */
#define QTD_TOGGLE (1 << 31) /* data toggle */
#define QTD_LENGTH(tok) (((tok)>>16) & 0x7fff)
#define QTD_IOC (1 << 15) /* interrupt on complete */
/* values for that type tag */
#define Q_TYPE_ITD __constant_cpu_to_le32 (0 << 1)
#define Q_TYPE_QH __constant_cpu_to_le32 (1 << 1)
-#define Q_TYPE_SITD __constant_cpu_to_le32 (2 << 1)
-#define Q_TYPE_FSTN __constant_cpu_to_le32 (3 << 1)
+#define Q_TYPE_SITD __constant_cpu_to_le32 (2 << 1)
+#define Q_TYPE_FSTN __constant_cpu_to_le32 (3 << 1)
/* next async queue entry, or pointer to interrupt/periodic QH */
#define QH_NEXT(dma) (cpu_to_le32(((u32)dma)&~0x01f)|Q_TYPE_QH)
* For entries in the async schedule, the type tag always says "qh".
*/
union ehci_shadow {
- struct ehci_qh *qh; /* Q_TYPE_QH */
+ struct ehci_qh *qh; /* Q_TYPE_QH */
struct ehci_itd *itd; /* Q_TYPE_ITD */
struct ehci_sitd *sitd; /* Q_TYPE_SITD */
struct ehci_fstn *fstn; /* Q_TYPE_FSTN */
#define QH_HUBPORT 0x3f800000
#define QH_MULT 0xc0000000
__le32 hw_current; /* qtd list - see EHCI 3.6.4 */
-
+
/* qtd overlay (hardware parts of a struct ehci_qtd) */
__le32 hw_qtd_next;
__le32 hw_alt_next;
struct list_head td_list; /* queued itds/sitds */
struct list_head free_list; /* list of unused itds/sitds */
struct usb_device *udev;
- struct usb_host_endpoint *ep;
+ struct usb_host_endpoint *ep;
/* output of (re)scheduling */
unsigned long start; /* jiffies */
unsigned bandwidth;
/* This is used to initialize iTD's hw_bufp fields */
- __le32 buf0;
- __le32 buf1;
+ __le32 buf0;
+ __le32 buf1;
__le32 buf2;
/* this is used to initialize sITD's tt info */
#define ITD_ACTIVE __constant_cpu_to_le32(EHCI_ISOC_ACTIVE)
- __le32 hw_bufp [7]; /* see EHCI 3.3.3 */
+ __le32 hw_bufp [7]; /* see EHCI 3.3.3 */
__le32 hw_bufp_hi [7]; /* Appendix B */
/* the rest is HCD-private */
/*-------------------------------------------------------------------------*/
/*
- * EHCI Specification 0.95 Section 3.4
+ * EHCI Specification 0.95 Section 3.4
* siTD, aka split-transaction isochronous Transfer Descriptor
* ... describe full speed iso xfers through TT in hubs
* see Figure 3-5 "Split-transaction Isochronous Transaction Descriptor (siTD)
projects / linux-2.6 / commitdiff