1 /* $NetBSD: ixp425_ixme.c,v 1.7 2021/08/07 16:18:46 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2006 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Steve C. Woodford.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: ixp425_ixme.c,v 1.7 2021/08/07 16:18:46 thorpej Exp $");
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/device.h>
39
40 #define _ARM32_BUS_DMA_PRIVATE
41 #include <sys/bus.h>
42
43 #include <arm/xscale/ixp425var.h>
44 #include <arm/xscale/ixp425_qmgr.h>
45 #include <arm/xscale/ixp425_ixmevar.h>
46
47 #include "locators.h"
48
49 static int ixme_match(device_t, cfdata_t, void *);
50 static void ixme_attach(device_t, device_t, void *);
51 static int ixme_search(device_t, cfdata_t, const int *, void *);
52 static int ixme_print(void *, const char *);
53
54 struct ixme_softc {
55 struct arm32_dma_range sc_dr;
56 struct arm32_bus_dma_tag sc_dt;
57 void *sc_qmgr;
58 };
59
60 CFATTACH_DECL_NEW(ixme, sizeof(struct ixme_softc),
61 ixme_match, ixme_attach, NULL, NULL);
62
63 static int
ixme_match(device_t parent,cfdata_t self,void * arg)64 ixme_match(device_t parent, cfdata_t self, void *arg)
65 {
66
67 return (1);
68 }
69
70 static void
ixme_attach(device_t parent,device_t self,void * arg)71 ixme_attach(device_t parent, device_t self, void *arg)
72 {
73 struct ixme_softc *sc = device_private(self);
74 extern paddr_t physical_start, physical_end;
75
76 aprint_naive("\n");
77 aprint_normal(": IXP4xx MicroEngine Support\n");
78
79 sc->sc_qmgr = ixpqmgr_init(&ixp425_bs_tag);
80 if (sc->sc_qmgr == NULL) {
81 panic("%s: ixme_attach: Failed to init Queue Manager",
82 device_xname(self));
83 }
84
85 sc->sc_dr.dr_sysbase = physical_start;
86 sc->sc_dr.dr_busbase = 0;
87 sc->sc_dr.dr_len = physical_end - physical_start;
88 sc->sc_dt._ranges = &sc->sc_dr;
89 sc->sc_dt._nranges = 1;
90
91 sc->sc_dt._dmamap_create = _bus_dmamap_create;
92 sc->sc_dt._dmamap_destroy = _bus_dmamap_destroy;
93 sc->sc_dt._dmamap_load = _bus_dmamap_load;
94 sc->sc_dt._dmamap_load_mbuf = _bus_dmamap_load_mbuf;
95 sc->sc_dt._dmamap_load_uio = _bus_dmamap_load_uio;
96 sc->sc_dt._dmamap_load_raw = _bus_dmamap_load_raw;
97 sc->sc_dt._dmamap_unload = _bus_dmamap_unload;
98 sc->sc_dt._dmamap_sync_pre = _bus_dmamap_sync;
99 sc->sc_dt._dmamap_sync_post = NULL;
100
101 sc->sc_dt._dmamem_alloc = _bus_dmamem_alloc;
102 sc->sc_dt._dmamem_free = _bus_dmamem_free;
103 sc->sc_dt._dmamem_map = _bus_dmamem_map;
104 sc->sc_dt._dmamem_unmap = _bus_dmamem_unmap;
105 sc->sc_dt._dmamem_mmap = _bus_dmamem_mmap;
106
107 sc->sc_dt._dmatag_subregion = _bus_dmatag_subregion;
108 sc->sc_dt._dmatag_destroy = _bus_dmatag_destroy;
109
110 config_search(self, NULL,
111 CFARGS(.search = ixme_search));
112 }
113
114 static int
ixme_search(device_t parent,cfdata_t cf,const int * ldesc,void * arg)115 ixme_search(device_t parent, cfdata_t cf, const int *ldesc, void *arg)
116 {
117 struct ixme_softc *sc = device_private(parent);
118 struct ixme_attach_args ixa;
119
120 if (cf->cf_loc[IXMECF_NPE] < 0 || cf->cf_loc[IXMECF_NPE] > 2)
121 return (0);
122
123 ixa.ixa_iot = &ixp425_bs_tag;
124 ixa.ixa_dt = &sc->sc_dt;
125 ixa.ixa_npe = cf->cf_loc[IXMECF_NPE];
126
127 if (config_probe(parent, cf, &ixa)) {
128 config_attach(parent, cf, &ixa, ixme_print, CFARGS_NONE);
129 return (1);
130 }
131
132 return (0);
133 }
134
135 static int
ixme_print(void * arg,const char * name)136 ixme_print(void *arg, const char *name)
137 {
138 struct ixme_attach_args *ixa = arg;
139
140 aprint_normal(" NPE-%c", 'A' + ixa->ixa_npe);
141
142 return (UNCONF);
143 }
144