1 | /* $NetBSD: bhavar.h,v 1.25 2012/10/27 17:18:19 chs Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * This code is derived from software contributed to The NetBSD Foundation |
8 | * by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace |
9 | * Simulation Facility, NASA Ames Research Center. |
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 | * |
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 | |
33 | #ifndef _DEV_IC_BHAVAR_H_ |
34 | #define _DEV_IC_BHAVAR_H_ |
35 | |
36 | #include <sys/queue.h> |
37 | |
38 | /* XXX adjust hash for large numbers of CCBs */ |
39 | #define CCB_HASH_SIZE 32 /* hash table size for phystokv */ |
40 | #define CCB_HASH_SHIFT 9 |
41 | #define CCB_HASH(x) ((((long)(x))>>CCB_HASH_SHIFT) & (CCB_HASH_SIZE - 1)) |
42 | |
43 | /* |
44 | * A CCB allocation group. Each group is a page size. We can find |
45 | * the allocation group for a CCB by truncating the CCB address to |
46 | * a page boundary, and the offset from the group's DMA mapping |
47 | * by taking the offset of the CCB into the page. |
48 | */ |
49 | #define BHA_CCBS_PER_GROUP ((PAGE_SIZE - sizeof(bus_dmamap_t)) / \ |
50 | sizeof(struct bha_ccb)) |
51 | struct bha_ccb_group { |
52 | bus_dmamap_t bcg_dmamap; |
53 | struct bha_ccb bcg_ccbs[1]; /* determined at run-time */ |
54 | }; |
55 | |
56 | #define BHA_CCB_GROUP(ccb) \ |
57 | (struct bha_ccb_group *)(trunc_page((vaddr_t)ccb)) |
58 | #define BHA_CCB_OFFSET(ccb) ((vaddr_t)(ccb) & PAGE_MASK) |
59 | |
60 | #define BHA_CCB_SYNC(sc, ccb, ops) \ |
61 | do { \ |
62 | struct bha_ccb_group *bcg = BHA_CCB_GROUP((ccb)); \ |
63 | \ |
64 | bus_dmamap_sync((sc)->sc_dmat, bcg->bcg_dmamap, \ |
65 | BHA_CCB_OFFSET(ccb), sizeof(struct bha_ccb), (ops)); \ |
66 | } while (0) |
67 | |
68 | /* |
69 | * Offset in the DMA mapping for mailboxes. |
70 | * Since all mailboxes are allocated on a single DMA'able memory |
71 | * due to the hardware limitation, an offset of any mailboxes can be |
72 | * calculated using same expression. |
73 | */ |
74 | #define BHA_MBX_OFFSET(sc, mbx) ((u_long)(mbx) - (u_long)(sc)->sc_mbo) |
75 | |
76 | #define BHA_MBI_SYNC(sc, mbi, ops) \ |
77 | do { \ |
78 | bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap_mbox, \ |
79 | BHA_MBX_OFFSET((sc), (mbi)), sizeof(struct bha_mbx_in), (ops)); \ |
80 | } while (0) |
81 | |
82 | #define BHA_MBO_SYNC(sc, mbo, ops) \ |
83 | do { \ |
84 | bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap_mbox, \ |
85 | BHA_MBX_OFFSET((sc), (mbo)), sizeof(struct bha_mbx_out), (ops)); \ |
86 | } while (0) |
87 | |
88 | struct bha_softc { |
89 | device_t sc_dev; |
90 | |
91 | bus_space_tag_t sc_iot; |
92 | bus_space_handle_t sc_ioh; |
93 | bus_dma_tag_t sc_dmat; |
94 | bus_dmamap_t sc_dmamap_mbox; /* maps the mailboxes */ |
95 | int sc_dmaflags; /* bus-specific dma map flags */ |
96 | void *sc_ih; |
97 | |
98 | int sc_scsi_id; /* host adapter SCSI ID */ |
99 | |
100 | int sc_flags; |
101 | #define BHAF_WIDE 0x01 /* device is wide */ |
102 | #define BHAF_DIFFERENTIAL 0x02 /* device is differential */ |
103 | #define BHAF_ULTRA 0x04 /* device is ultra-scsi */ |
104 | #define BHAF_TAGGED_QUEUEING 0x08 /* device supports tagged queueing */ |
105 | #define BHAF_WIDE_LUN 0x10 /* device supported wide lun CCBs */ |
106 | #define BHAF_STRICT_ROUND_ROBIN 0x20 /* device supports strict RR mode */ |
107 | |
108 | int sc_max_dmaseg; /* maximum number of DMA segments */ |
109 | int sc_max_ccbs; /* maximum number of CCBs (HW) */ |
110 | int sc_cur_ccbs; /* current number of CCBs */ |
111 | |
112 | int sc_disc_mask; /* mask of targets allowing discnnct */ |
113 | int sc_ultra_mask; /* mask of targets allowing ultra */ |
114 | int sc_fast_mask; /* mask of targets allowing fast */ |
115 | int sc_sync_mask; /* mask of targets allowing sync */ |
116 | int sc_wide_mask; /* mask of targets allowing wide */ |
117 | int sc_tag_mask; /* mask of targets allowing t/q'ing */ |
118 | |
119 | /* |
120 | * In and Out mailboxes. |
121 | */ |
122 | struct bha_mbx_out *sc_mbo; |
123 | struct bha_mbx_in *sc_mbi; |
124 | |
125 | struct bha_mbx_out *sc_cmbo; /* Collection Mail Box out */ |
126 | struct bha_mbx_out *sc_tmbo; /* Target Mail Box out */ |
127 | |
128 | int sc_mbox_count; /* number of mailboxes */ |
129 | int sc_mbofull; /* number of full Mail Box Out */ |
130 | |
131 | struct bha_mbx_in *sc_tmbi; /* Target Mail Box in */ |
132 | |
133 | struct bha_ccb *sc_ccbhash[CCB_HASH_SIZE]; |
134 | TAILQ_HEAD(, bha_ccb) sc_free_ccb, |
135 | sc_waiting_ccb, |
136 | sc_allocating_ccbs; |
137 | |
138 | struct scsipi_adapter sc_adapter; |
139 | struct scsipi_channel sc_channel; |
140 | |
141 | char sc_model[7], |
142 | sc_firmware[6]; |
143 | }; |
144 | |
145 | struct bha_probe_data { |
146 | int sc_irq, sc_drq; |
147 | }; |
148 | |
149 | int bha_find(bus_space_tag_t, bus_space_handle_t); |
150 | int bha_inquire_config(bus_space_tag_t, bus_space_handle_t, |
151 | struct bha_probe_data *); |
152 | void bha_attach(struct bha_softc *); |
153 | int bha_info(struct bha_softc *); |
154 | int bha_intr(void *); |
155 | |
156 | int bha_disable_isacompat(struct bha_softc *); |
157 | int bha_probe_inquiry(bus_space_tag_t, bus_space_handle_t, |
158 | struct bha_probe_data *); |
159 | |
160 | #endif /* _DEV_IC_BHAVAR_H_ */ |
161 | |