diff options
Diffstat (limited to 'usr/src/uts/common/sys/asy.h')
| -rw-r--r-- | usr/src/uts/common/sys/asy.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/usr/src/uts/common/sys/asy.h b/usr/src/uts/common/sys/asy.h index 491a222cd0..3b3d0c2a63 100644 --- a/usr/src/uts/common/sys/asy.h +++ b/usr/src/uts/common/sys/asy.h @@ -275,6 +275,15 @@ struct asycom { ddi_iblock_cookie_t asy_iblock; kmutex_t asy_excl; /* asy adaptive mutex */ kmutex_t asy_excl_hi; /* asy spinlock mutex */ + + /* + * The asy_soft_sr mutex should only be taken by the soft interrupt + * handler and the driver DDI_SUSPEND/DDI_RESUME code. It + * shouldn't be taken by any code that may get called indirectly + * by the soft interrupt handler (e.g. as a result of a put or + * putnext call). + */ + kmutex_t asy_soft_sr; /* soft int suspend/resume mutex */ uchar_t asy_msr; /* saved modem status */ uchar_t asy_mcr; /* soft carrier bits */ uchar_t asy_lcr; /* console lcr bits */ @@ -300,11 +309,13 @@ struct asycom { struct asyncline { int async_flags; /* random flags */ kcondvar_t async_flags_cv; /* condition variable for flags */ + kcondvar_t async_ops_cv; /* condition variable for async_ops */ dev_t async_dev; /* device major/minor numbers */ mblk_t *async_xmitblk; /* transmit: active msg block */ struct asycom *async_common; /* device common data */ tty_common_t async_ttycommon; /* tty driver common data */ bufcall_id_t async_wbufcid; /* id for pending write-side bufcall */ + size_t async_wbufcds; /* Buffer size requested in bufcall */ timeout_id_t async_polltid; /* softint poll timeout id */ timeout_id_t async_dtrtid; /* delaying DTR turn on */ timeout_id_t async_utbrktid; /* hold minimum untimed break time id */ @@ -343,6 +354,10 @@ struct asyncline { short async_ext; /* modem status change count */ short async_work; /* work to do flag */ timeout_id_t async_timer; /* close drain progress timer */ + + mblk_t *async_suspqf; /* front of suspend queue */ + mblk_t *async_suspqb; /* back of suspend queue */ + int async_ops; /* active operations counter */ }; /* definitions for async_flags field */ @@ -372,6 +387,8 @@ struct asyncline { #define ASYNC_OUT_FLW_RESUME 0x00100000 /* output need to be resumed */ /* because of transition of flow */ /* control from stop to start */ +#define ASYNC_DDI_SUSPENDED 0x00200000 /* suspended by DDI */ +#define ASYNC_RESUME_BUFCALL 0x00400000 /* call bufcall when resumed by DDI */ /* asy_hwtype definitions */ #define ASY8250A 0x2 /* 8250A or 16450 */ @@ -389,6 +406,7 @@ struct asyncline { #define ASY_RTS_DTR_OFF 0x00000020 #define ASY_IGNORE_CD 0x00000040 #define ASY_CONSOLE 0x00000080 +#define ASY_DDI_SUSPENDED 0x00000100 /* suspended by DDI */ /* definitions for asy_flags2 field */ #define ASY2_NO_LOOPBACK 0x00000001 /* Device doesn't support loopback */ |