cudavar.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-3-Clause
    3  *
    4  * Copyright (c) 2006 Michael Lorenz
    5  * Copyright (c) 2008 Nathan Whitehorn
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  * 3. Neither the name of The NetBSD Foundation nor the names of its
   17  *    contributors may be used to endorse or promote products derived
   18  *    from this software without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   30  * POSSIBILITY OF SUCH DAMAGE.
   31  *
   32  * $FreeBSD$
   33  *
   34  */
   35 
   36 #ifndef _POWERPC_CUDAVAR_H_
   37 #define _POWERPC_CUDAVAR_H_
   38 
   39 #define CUDA_DEVSTR     "Apple CUDA I/O Controller"
   40 #define CUDA_MAXPACKETS 10
   41 
   42 /* Cuda addresses */
   43 #define CUDA_ADB        0
   44 #define CUDA_PSEUDO     1
   45 #define CUDA_ERROR      2       /* error codes? */
   46 #define CUDA_TIMER      3
   47 #define CUDA_POWER      4
   48 #define CUDA_IIC        5       /* XXX ??? */
   49 #define CUDA_PMU        6
   50 #define CUDA_ADB_QUERY  7
   51 
   52 /* Cuda commands */
   53 #define CMD_AUTOPOLL    1
   54 #define CMD_READ_RTC    3
   55 #define CMD_WRITE_RTC   9
   56 #define CMD_POWEROFF    10
   57 #define CMD_RESET       17
   58 #define CMD_IIC         34
   59 
   60 /* Cuda state codes */
   61 #define CUDA_NOTREADY   0x1     /* has not been initialized yet */
   62 #define CUDA_IDLE       0x2     /* the bus is currently idle */
   63 #define CUDA_OUT        0x3     /* sending out a command */
   64 #define CUDA_IN         0x4     /* receiving data */
   65 #define CUDA_POLLING    0x5     /* polling - II only */
   66 
   67 struct cuda_packet {
   68         uint8_t len;
   69         uint8_t type;
   70 
   71         uint8_t data[253];
   72         STAILQ_ENTRY(cuda_packet) pkt_q;
   73 };
   74 
   75 STAILQ_HEAD(cuda_pktq, cuda_packet);
   76 
   77 struct cuda_softc {
   78         device_t        sc_dev;
   79         int             sc_memrid;
   80         struct resource *sc_memr;
   81         int             sc_irqrid;
   82         struct resource *sc_irq;
   83         void            *sc_ih;
   84 
   85         struct mtx      sc_mutex;
   86 
   87         device_t        adb_bus;
   88 
   89         int             sc_node;
   90         volatile int    sc_state;
   91         int             sc_waiting;
   92         int             sc_polling;
   93         int             sc_iic_done;
   94         volatile int    sc_autopoll;
   95         uint32_t        sc_rtc;
   96 
   97         int sc_i2c_read_len;
   98 
   99         /* internal buffers */
  100         uint8_t         sc_in[256];
  101         uint8_t         sc_out[256];
  102         int             sc_sent;
  103         int             sc_out_length;
  104         int             sc_received;
  105 
  106         struct cuda_packet sc_pkts[CUDA_MAXPACKETS];
  107         struct cuda_pktq sc_inq;
  108         struct cuda_pktq sc_outq;
  109         struct cuda_pktq sc_freeq;
  110 };
  111 
  112 #endif /* _POWERPC_CUDAVAR_H_ */

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sys/powerpc/powermac/cudavar.h