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