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
65 struct 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
73 STAILQ_HEAD(cuda_pktq, cuda_packet);
74
75 struct 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_ */
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