/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright (c) 1991-1998 by Sun Microsystems, Inc. * All rights reserved. */ #ifndef _SYS_SER_ASYNC_H #define _SYS_SER_ASYNC_H /* * Initial port setup parameters for async lines */ #include <sys/ksynch.h> #ifdef __cplusplus extern "C" { #endif /* * The following macro can be used to generate the baud rate generator's * time constants. The parameters are the input clock to the BRG (eg, * 5000000 for 5MHz) and the desired baud rate. This macro assumes that * the clock needed is 16x the desired baud rate. */ #define ZSTimeConst(InputClock, BaudRate) \ (ushort_t)((((int)InputClock+(BaudRate*16)) \ / (2*(int)(BaudRate*16))) - 2) #define ZSDelayConst(Hertz, FifoSize, BitsByte, BaudRate) \ (ushort_t)((((int)(Hertz)*(FifoSize)*(BitsByte)) \ / (int)(BaudRate)) + 1) #define ZSPEED(n) ZSTimeConst(PCLK, n) #define ZFIFOSZ 3 /* * This macro needs a constant 100 Hz, but hires_tick or hz may change that. * ztdelay in zs_async.c converts to a true delay based on hz so we * can use 100 Hz here. */ #define ZDELAY(n) ZSDelayConst(100, ZFIFOSZ, NBBY, n) #define ISPEED B9600 #define ISPEED_SVID B300 #define IFLAGS (CS7|CREAD|PARENB) #define IFLAGS_SVID (CS8|CREAD|HUPCL) #define I_IFLAGS 0 #define I_CFLAGS ((ISPEED << IBSHIFT) | ISPEED | CS8 | CREAD | HUPCL) /* * Ring buffer and async line management definitions for CPU lines: */ #ifdef _KERNEL #ifndef _ASM #define RINGBITS 8 /* # of bits in ring ptrs */ #define RINGSIZE (1<<RINGBITS) /* size of ring */ #define RINGMASK (RINGSIZE-1) #define RINGFRAC 2 /* fraction of ring to force flush */ #define RING_INIT(zap) ((zap)->za_rput = (zap)->za_rget = 0) #define RING_CNT(zap) (((zap)->za_rput - (zap)->za_rget) & RINGMASK) #define RING_FRAC(zap) ((int)RING_CNT(zap) >= (int)(RINGSIZE/RINGFRAC)) #define RING_POK(zap, n) ((int)RING_CNT(zap) < (int)(RINGSIZE-(n))) #define RING_PUT(zap, c) \ ((zap)->za_ring[(zap)->za_rput++ & RINGMASK] = (uchar_t)(c)) #define RING_UNPUT(zap) ((zap)->za_rput--) #define RING_GOK(zap, n) ((int)RING_CNT(zap) >= (int)(n)) #define RING_GET(zap) ((zap)->za_ring[(zap)->za_rget++ & RINGMASK]) #define RING_EAT(zap, n) ((zap)->za_rget += (n)) /* * To process parity errors/breaks in-band */ #define SBITS 8 #define S_UNMARK 0x00FF #define S_PARERR (0x01<<SBITS) #define S_BREAK (0x02<<SBITS) #define RING_MARK(zap, c, s) \ ((zap)->za_ring[(zap)->za_rput++ & RINGMASK] = ((uchar_t)(c)|(s))) #define RING_UNMARK(zap) \ ((zap)->za_ring[((zap)->za_rget) & RINGMASK] &= S_UNMARK) #define RING_ERR(zap, c) \ ((zap)->za_ring[((zap)->za_rget) & RINGMASK] & (c)) /* * These flags are shared with mcp_async.c and should be kept in sync. */ #define ZAS_WOPEN 0x00000001 /* waiting for open to complete */ #define ZAS_ISOPEN 0x00000002 /* open is complete */ #define ZAS_OUT 0x00000004 /* line being used for dialout */ #define ZAS_CARR_ON 0x00000008 /* carrier on last time we looked */ #define ZAS_STOPPED 0x00000010 /* output is stopped */ #define ZAS_DELAY 0x00000020 /* waiting for delay to finish */ #define ZAS_BREAK 0x00000040 /* waiting for break to finish */ #define ZAS_BUSY 0x00000080 /* waiting for transmission to finish */ #define ZAS_DRAINING 0x00000100 /* waiting for output to drain */ /* from chip */ #define ZAS_SERVICEIMM 0x00000200 /* queue soft interrupt as soon as */ /* receiver interrupt occurs */ #define ZAS_SOFTC_ATTN 0x00000400 /* check soft carrier state in close */ #define ZAS_PAUSED 0x00000800 /* MCP: dma interrupted and pending */ #define ZAS_LNEXT 0x00001000 /* MCP: next input char is quoted */ #define ZAS_XMIT_ACTIVE 0x00002000 /* MCP: Transmit dma running */ #define ZAS_DMA_DONE 0x00004000 /* MCP: DMA done interrupt received */ #define ZAS_ZSA_START 0x00010000 /* MCP: DMA done interrupt received */ /* * Asynchronous protocol private data structure for ZS and MCP/ALM2 */ #define ZSA_MIN_RSTANDBY 12 #define ZSA_MAX_RSTANDBY 256 #define ZSA_RDONE_MIN 60 #define ZSA_RDONE_MAX 350 struct asyncline { int za_flags; /* random flags */ kcondvar_t za_flags_cv; /* condition variable for flags */ dev_t za_dev; /* device major/minor numbers */ mblk_t *za_xmitblk; /* transmit: active msg block */ mblk_t *za_rcvblk; /* receive: active msg block */ struct zscom *za_common; /* device common data */ tty_common_t za_ttycommon; /* tty driver common data */ bufcall_id_t za_wbufcid; /* id of pending write-side bufcall */ timeout_id_t za_polltid; /* softint poll timeout id */ /* * The following fields are protected by the zs_excl_hi lock. * Some, such as za_flowc, are set only at the base level and * cleared (without the lock) only by the interrupt level. */ uchar_t *za_optr; /* output pointer */ int za_ocnt; /* output count */ uchar_t za_rput; /* producing pointer for input */ uchar_t za_rget; /* consuming pointer for input */ uchar_t za_flowc; /* flow control char to send */ uchar_t za_rr0; /* status latch for break detection */ /* * Each character stuffed into the ring has two bytes associated * with it. The first byte is used to indicate special conditions * and the second byte is the actual data. The ring buffer * needs to be defined as ushort_t to accomodate this. */ ushort_t za_ring[RINGSIZE]; timeout_id_t za_kick_rcv_id; int za_kick_rcv_count; timeout_id_t za_zsa_restart_id; bufcall_id_t za_bufcid; mblk_t *za_rstandby[ZSA_MAX_RSTANDBY]; /* receive: standby message blocks */ mblk_t *za_rdone[ZSA_RDONE_MAX]; /* complete messages to be sent up */ int za_rdone_wptr; int za_rdone_rptr; int za_bad_count_int; uint_t za_rcv_flags_mask; #ifdef ZSA_DEBUG int za_wr; int za_rd; #endif volatile uchar_t za_soft_active; volatile uchar_t za_kick_active; #define DO_STOPC (1<<8) #define DO_ESC (1<<9) #define DO_SERVICEIMM (1<<10) #define DO_TRANSMIT (1<<11) #define DO_RETRANSMIT (1<<12) /* * ZS exclusive stuff. */ short za_break; /* break count */ union { struct { uchar_t _hw; /* overrun (hw) */ uchar_t _sw; /* overrun (sw) */ } _z; ushort_t uover_overrun; } za_uover; #define za_overrun za_uover.uover_overrun #define za_hw_overrun za_uover._z._hw #define za_sw_overrun za_uover._z._sw short za_ext; /* modem status change count */ short za_work; /* work to do flag */ short za_grace_flow_control; uchar_t za_do_kick_rcv_in_softint; uchar_t za_m_error; /* * MCP exclusive stuff. * These should all be protected by a high priority lock. */ uchar_t *za_xoff; /* xoff char in h/w XOFF buffer */ uchar_t za_lnext; /* treat next char as literal */ uchar_t *za_devctl; /* device control reg for this port */ uchar_t *za_dmabuf; /* dma ram buffer for this port */ int za_breakoff; /* SLAVIO */ int za_slav_break; /* SLAVIO */ /* * NTP PPS exclusive stuff. */ short za_pps; /* PPS on? */ }; #endif /* _ASM */ #endif /* _KERNEL */ #ifdef __cplusplus } #endif #endif /* !_SYS_SER_ASYNC_H */
