Annotation of sys/dev/sbus/qecvar.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: qecvar.h,v 1.3 2006/06/02 20:00:56 miod Exp $ */
2: /* $NetBSD: qecvar.h,v 1.4 1999/01/17 20:47:50 pk Exp $ */
3:
4: /*-
5: * Copyright (c) 1998 The NetBSD Foundation, Inc.
6: * All rights reserved.
7: *
8: * This code is derived from software contributed to The NetBSD Foundation
9: * by Paul Kranenburg.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the NetBSD
22: * Foundation, Inc. and its contributors.
23: * 4. Neither the name of The NetBSD Foundation nor the names of its
24: * contributors may be used to endorse or promote products derived
25: * from this software without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37: * POSSIBILITY OF SUCH DAMAGE.
38: */
39:
40: struct qec_softc {
41: struct device sc_dev; /* us as a device */
42: bus_space_tag_t sc_bustag; /* bus & dma tags */
43: bus_dma_tag_t sc_dmatag;
44: struct sbus_range *sc_range; /* PROM ranges */
45: int sc_nrange; /* */
46: struct sbus_intr *sc_intr; /* interrupt info */
47:
48: bus_space_handle_t sc_regs; /* QEC registers */
49: int sc_nchannels; /* # of channels on board */
50: int sc_burst; /* DVMA burst size in effect */
51: caddr_t sc_buffer; /* VA of the buffer we provide */
52: int sc_bufsiz; /* Size of buffer */
53:
54: u_int sc_msize; /* QEC buffer offset per channel */
55: u_int sc_rsize; /* QEC buffer size for receive */
56: };
57:
58: struct qec_ring {
59: /* Ring Descriptors */
60: caddr_t rb_membase; /* Packet buffer: CPU address */
61: bus_addr_t rb_dmabase; /* Packet buffer: DMA address */
62: struct qec_xd *rb_txd; /* Transmit descriptors */
63: bus_addr_t rb_txddma; /* DMA address of same */
64: struct qec_xd *rb_rxd; /* Receive descriptors */
65: bus_addr_t rb_rxddma; /* DMA address of same */
66: caddr_t rb_txbuf; /* Transmit buffers */
67: caddr_t rb_rxbuf; /* Receive buffers */
68: int rb_ntbuf; /* # of transmit buffers */
69: int rb_nrbuf; /* # of receive buffers */
70:
71: /* Ring Descriptor state */
72: int rb_tdhead, rb_tdtail;
73: int rb_rdtail;
74: int rb_td_nbusy;
75: };
76:
77: void qec_meminit(struct qec_ring *, unsigned int);
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