1 /* $NetBSD: if_admswvar.h,v 1.1 2007/03/20 08:52:02 dyoung Exp $ */
2
3 /*-
4 * Copyright (c) 2007 Ruslan Ermilov and Vsevolod Lobko.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or
8 * without modification, are permitted provided that the following
9 * conditions are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above
13 * copyright notice, this list of conditions and the following
14 * disclaimer in the documentation and/or other materials provided
15 * with the distribution.
16 * 3. The names of the authors may not be used to endorse or promote
17 * products derived from this software without specific prior
18 * written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY
21 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
23 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
25 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
27 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
29 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
30 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
31 * OF SUCH DAMAGE.
32 */
33 #ifndef _IF_ADMSWVAR_H_
34 #define _IF_ADMSWVAR_H_
35
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
38
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/bus.h>
42 #include <sys/kernel.h>
43 #include <sys/mbuf.h>
44 #include <sys/malloc.h>
45 #include <sys/module.h>
46 #include <sys/rman.h>
47 #include <sys/socket.h>
48 #include <sys/sockio.h>
49 #include <sys/sysctl.h>
50 #include <machine/bus.h>
51
52 #include <net/ethernet.h>
53 #include <net/if.h>
54 #include <net/if_arp.h>
55 #include <net/if_dl.h>
56 #include <net/if_media.h>
57 #include <net/if_mib.h>
58 #include <net/if_types.h>
59
60 #ifdef INET
61 #include <netinet/in.h>
62 #include <netinet/in_systm.h>
63 #include <netinet/in_var.h>
64 #include <netinet/ip.h>
65 #endif
66
67 #include <net/bpf.h>
68 #include <net/bpfdesc.h>
69
70 #include <dev/mii/mii.h>
71 #include <dev/mii/miivar.h>
72
73 #include <mips/adm5120/adm5120reg.h>
74 #include <mips/adm5120/if_admswreg.h>
75
76 #define MAC_BUFLEN 0x07ff
77
78 #define ADMSW_NTXHDESC 4
79 #define ADMSW_NRXHDESC 32
80 #define ADMSW_NTXLDESC 32
81 #define ADMSW_NRXLDESC 32
82
83 #define ADMSW_NTXHDESC_MASK (ADMSW_NTXHDESC - 1)
84 #define ADMSW_NRXHDESC_MASK (ADMSW_NRXHDESC - 1)
85 #define ADMSW_NTXLDESC_MASK (ADMSW_NTXLDESC - 1)
86 #define ADMSW_NRXLDESC_MASK (ADMSW_NRXLDESC - 1)
87
88 #define ADMSW_NEXTTXH(x) (((x) + 1) & ADMSW_NTXHDESC_MASK)
89 #define ADMSW_NEXTRXH(x) (((x) + 1) & ADMSW_NRXHDESC_MASK)
90 #define ADMSW_NEXTTXL(x) (((x) + 1) & ADMSW_NTXLDESC_MASK)
91 #define ADMSW_NEXTRXL(x) (((x) + 1) & ADMSW_NRXLDESC_MASK)
92
93 #define ADMSW_IRQ 9
94
95 struct admsw_control_data {
96 /* The transmit descriptors. */
97 struct admsw_desc acd_txhdescs[ADMSW_NTXHDESC];
98
99 /* The receive descriptors. */
100 struct admsw_desc acd_rxhdescs[ADMSW_NRXHDESC];
101
102 /* The transmit descriptors. */
103 struct admsw_desc acd_txldescs[ADMSW_NTXLDESC];
104
105 /* The receive descriptors. */
106 struct admsw_desc acd_rxldescs[ADMSW_NRXLDESC];
107 };
108
109 #define ADMSW_CDOFF(x) offsetof(struct admsw_control_data, x)
110 #define ADMSW_CDTXHOFF(x) ADMSW_CDOFF(acd_txhdescs[(x)])
111 #define ADMSW_CDTXLOFF(x) ADMSW_CDOFF(acd_txldescs[(x)])
112 #define ADMSW_CDRXHOFF(x) ADMSW_CDOFF(acd_rxhdescs[(x)])
113 #define ADMSW_CDRXLOFF(x) ADMSW_CDOFF(acd_rxldescs[(x)])
114
115 struct admsw_descsoft {
116 struct mbuf *ds_mbuf;
117 bus_dmamap_t ds_dmamap;
118 /* Up to 2 segments */
119 uint32_t ds_addr[2];
120 uint32_t ds_len[2];
121 uint32_t ds_nsegs;
122 };
123
124 /*
125 * Software state per device.
126 */
127 struct admsw_softc {
128 device_t sc_dev; /* generic device information */
129 uint8_t sc_enaddr[ETHER_ADDR_LEN];
130 bus_dma_tag_t sc_control_dmat;
131 /* bus DMA tag for control structs*/
132 bus_dma_tag_t sc_bufs_dmat; /* bus DMA tag for buffers */
133 struct ifmedia sc_ifmedia[SW_DEVS];
134 int ndevs; /* number of IFF_RUNNING interfaces */
135 struct ifnet *sc_ifnet[SW_DEVS];
136 struct callout sc_watchdog;
137 int sc_timer;
138 /* Ethernet common data */
139 void *sc_ih; /* interrupt cookie */
140 struct resource *irq_res;
141 struct resource *mem_res;
142 bus_dmamap_t sc_cddmamap; /* control data DMA map */
143 uint32_t sc_cddma;
144 struct admsw_control_data *sc_control_data;
145
146 struct admsw_descsoft sc_txhsoft[ADMSW_NTXHDESC];
147 struct admsw_descsoft sc_rxhsoft[ADMSW_NRXHDESC];
148 struct admsw_descsoft sc_txlsoft[ADMSW_NTXLDESC];
149 struct admsw_descsoft sc_rxlsoft[ADMSW_NRXLDESC];
150 #define sc_txhdescs sc_control_data->acd_txhdescs
151 #define sc_rxhdescs sc_control_data->acd_rxhdescs
152 #define sc_txldescs sc_control_data->acd_txldescs
153 #define sc_rxldescs sc_control_data->acd_rxldescs
154
155 int sc_txfree; /* number of free Tx descriptors */
156 int sc_txnext; /* next Tx descriptor to use */
157 int sc_txdirty; /* first dirty Tx descriptor */
158 int sc_rxptr; /* next ready Rx descriptor */
159 };
160
161 #define ADMSW_CDTXHADDR(sc, x) ((sc)->sc_cddma + ADMSW_CDTXHOFF((x)))
162 #define ADMSW_CDTXLADDR(sc, x) ((sc)->sc_cddma + ADMSW_CDTXLOFF((x)))
163 #define ADMSW_CDRXHADDR(sc, x) ((sc)->sc_cddma + ADMSW_CDRXHOFF((x)))
164 #define ADMSW_CDRXLADDR(sc, x) ((sc)->sc_cddma + ADMSW_CDRXLOFF((x)))
165
166 #define ADMSW_CDTXHSYNC(sc, x, ops) \
167 bus_dmamap_sync((sc)->sc_control_dmat, (sc)->sc_cddmamap, (ops))
168
169 #define ADMSW_CDTXLSYNC(sc, x, ops) \
170 bus_dmamap_sync((sc)->sc_control_dmat, (sc)->sc_cddmamap, (ops))
171
172 #define ADMSW_CDRXHSYNC(sc, x, ops) \
173 bus_dmamap_sync((sc)->sc_control_dmat, (sc)->sc_cddmamap, (ops))
174
175 #define ADMSW_CDRXLSYNC(sc, x, ops) \
176 bus_dmamap_sync((sc)->sc_control_dmat, (sc)->sc_cddmamap, (ops))
177
178 #define ADMSW_INIT_RXHDESC(sc, x) \
179 do { \
180 struct admsw_descsoft *__ds = &(sc)->sc_rxhsoft[(x)]; \
181 struct admsw_desc *__desc = &(sc)->sc_rxhdescs[(x)]; \
182 struct mbuf *__m = __ds->ds_mbuf; \
183 \
184 __m->m_data = __m->m_ext.ext_buf + 2; \
185 __desc->data = __ds->ds_addr[0] + 2; \
186 __desc->cntl = 0; \
187 __desc->len = min(MCLBYTES - 2, MAC_BUFLEN - 2); \
188 __desc->status = 0; \
189 if ((x) == ADMSW_NRXHDESC - 1) \
190 __desc->data |= ADM5120_DMA_RINGEND; \
191 __desc->data |= ADM5120_DMA_OWN; \
192 ADMSW_CDRXHSYNC((sc), (x), BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \
193 } while (0)
194
195 #define ADMSW_INIT_RXLDESC(sc, x) \
196 do { \
197 struct admsw_descsoft *__ds = &(sc)->sc_rxlsoft[(x)]; \
198 struct admsw_desc *__desc = &(sc)->sc_rxldescs[(x)]; \
199 struct mbuf *__m = __ds->ds_mbuf; \
200 \
201 __m->m_data = __m->m_ext.ext_buf + 2; \
202 __desc->data = __ds->ds_addr[0] + 2; \
203 __desc->cntl = 0; \
204 __desc->len = min(MCLBYTES - 2, MAC_BUFLEN - 2); \
205 __desc->status = 0; \
206 if ((x) == ADMSW_NRXLDESC - 1) \
207 __desc->data |= ADM5120_DMA_RINGEND; \
208 __desc->data |= ADM5120_DMA_OWN; \
209 ADMSW_CDRXLSYNC((sc), (x), BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \
210 } while (0)
211
212 void admwdog_attach(struct admsw_softc *);
213
214 #endif /* _IF_ADMSWVAR_H_ */
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