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      1 /*	$NetBSD: pscvar.h,v 1.1 2026/06/27 13:28:35 rkujawa Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2008, 2026 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Radoslaw Kujawa and Robert Swindells.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _POWERPC_MPC5200_PSCVAR_H_
     33 #define _POWERPC_MPC5200_PSCVAR_H_
     34 
     35 #include <sys/device.h>
     36 #include <sys/bus.h>
     37 #include <sys/mutex.h>
     38 #include <sys/tty.h>
     39 
     40 #include <dev/cons.h>
     41 
     42 #define	PSC_RING_SIZE	1024		/* receive ring (power of two) */
     43 #define	PSC_RING_MASK	(PSC_RING_SIZE - 1)
     44 
     45 struct psc_softc {
     46 	device_t		sc_dev;
     47 	bus_space_tag_t		sc_iot;
     48 	bus_space_handle_t	sc_ioh;
     49 	int			sc_node;
     50 	bool			sc_console;
     51 
     52 	int			sc_irq;
     53 	void			*sc_ih;		/* hard interrupt */
     54 	void			*sc_si;		/* soft interrupt */
     55 	kmutex_t		sc_lock;	/* protects the register set */
     56 	struct tty		*sc_tty;
     57 	uint16_t		sc_imr;		/* shadow of PSC_IMR */
     58 
     59 	/* Receive ring, filled at IPL_HIGH, drained at IPL_SOFTSERIAL. */
     60 	uint8_t			sc_rbuf[PSC_RING_SIZE];
     61 	u_int			sc_rbput;	/* producer (interrupt) */
     62 	u_int			sc_rbget;	/* consumer (soft) */
     63 	volatile bool		sc_rx_ready;
     64 
     65 	/* Transmit state. */
     66 	uint8_t			*sc_tba;	/* next byte to send */
     67 	u_int			sc_tbc;		/* bytes remaining */
     68 	volatile bool		sc_tx_busy;
     69 	volatile bool		sc_tx_done;
     70 };
     71 
     72 /* MPC5200 PSC console device, exported for the OFW console selection. */
     73 extern struct consdev psccons;
     74 
     75 #endif /* _POWERPC_MPC5200_PSCVAR_H_ */
     76