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/*
* 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
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* 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 Hertz, but we can now have a hires_tick.
* ztdelay in zs_async.c converts to a true delay based on hz so we
* can use 100 for Hertz 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 */
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