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path: root/drivers/usb/host/ehci.h
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Diffstat (limited to 'drivers/usb/host/ehci.h')
-rw-r--r--drivers/usb/host/ehci.h59
1 files changed, 33 insertions, 26 deletions
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index 679c1cdcc915..6aac39f50e07 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -1,6 +1,6 @@
/*
* 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
@@ -58,7 +58,6 @@ struct ehci_hcd { /* one per controller */
/* async schedule support */
struct ehci_qh *async;
struct ehci_qh *reclaim;
- unsigned reclaim_ready : 1;
unsigned scanning : 1;
/* periodic schedule support */
@@ -81,8 +80,8 @@ struct ehci_hcd { /* one per controller */
struct dma_pool *itd_pool; /* itd per iso urb */
struct dma_pool *sitd_pool; /* sitd per split iso urb */
+ struct timer_list iaa_watchdog;
struct timer_list watchdog;
- struct notifier_block reboot_notifier;
unsigned long actions;
unsigned stamp;
unsigned long next_statechange;
@@ -104,7 +103,7 @@ struct ehci_hcd { /* one per controller */
#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);
@@ -115,9 +114,21 @@ static inline struct usb_hcd *ehci_to_hcd (struct ehci_hcd *ehci)
}
+static inline void
+iaa_watchdog_start (struct ehci_hcd *ehci)
+{
+ WARN_ON(timer_pending(&ehci->iaa_watchdog));
+ mod_timer (&ehci->iaa_watchdog,
+ jiffies + msecs_to_jiffies(EHCI_IAA_MSECS));
+}
+
+static inline void iaa_watchdog_done (struct ehci_hcd *ehci)
+{
+ del_timer (&ehci->iaa_watchdog);
+}
+
enum ehci_timer_action {
TIMER_IO_WATCHDOG,
- TIMER_IAA_WATCHDOG,
TIMER_ASYNC_SHRINK,
TIMER_ASYNC_OFF,
};
@@ -135,9 +146,6 @@ timer_action (struct ehci_hcd *ehci, enum ehci_timer_action action)
unsigned long t;
switch (action) {
- case TIMER_IAA_WATCHDOG:
- t = EHCI_IAA_JIFFIES;
- break;
case TIMER_IO_WATCHDOG:
t = EHCI_IO_JIFFIES;
break;
@@ -154,8 +162,7 @@ timer_action (struct ehci_hcd *ehci, enum ehci_timer_action action)
// async queue SHRINK often precedes IAA. while it's ready
// to go OFF neither can matter, and afterwards the IO
// watchdog stops unless there's still periodic traffic.
- if (action != TIMER_IAA_WATCHDOG
- && t > ehci->watchdog.expires
+ if (time_before_eq(t, ehci->watchdog.expires)
&& timer_pending (&ehci->watchdog))
return;
mod_timer (&ehci->watchdog, t);
@@ -179,8 +186,8 @@ struct ehci_caps {
#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 */
@@ -205,7 +212,7 @@ struct ehci_regs {
#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 */
@@ -231,9 +238,9 @@ struct ehci_regs {
/* 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 */
@@ -302,7 +309,7 @@ struct ehci_dbg_port {
/*
* 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,
@@ -312,7 +319,7 @@ struct ehci_qtd {
/* 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 */
@@ -349,8 +356,8 @@ struct ehci_qtd {
/* 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)
@@ -367,7 +374,7 @@ struct ehci_qtd {
* 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 */
@@ -397,7 +404,7 @@ struct ehci_qh {
#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;
@@ -472,7 +479,7 @@ struct ehci_iso_stream {
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 */
@@ -492,8 +499,8 @@ struct ehci_iso_stream {
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 */
@@ -521,7 +528,7 @@ struct ehci_itd {
#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 */
@@ -542,7 +549,7 @@ struct ehci_itd {
/*-------------------------------------------------------------------------*/
/*
- * 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)
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-20 00:37:42 +0300