Annotation of sys/dev/pci/if_en_pci.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: if_en_pci.c,v 1.11 2005/09/11 18:17:08 mickey Exp $ */
2:
3: /*
4: *
5: * Copyright (c) 1996 Charles D. Cranor and Washington University.
6: * All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by Charles D. Cranor and
19: * Washington University.
20: * 4. The name of the author may not be used to endorse or promote products
21: * derived from this software without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33: */
34:
35: /*
36: *
37: * i f _ e n _ p c i . c
38: *
39: * author: Chuck Cranor <chuck@ccrc.wustl.edu>
40: * started: spring, 1996.
41: *
42: * PCI glue for the eni155p card.
43: */
44:
45: #include <sys/param.h>
46: #include <sys/systm.h>
47: #include <sys/device.h>
48: #include <sys/mbuf.h>
49: #include <sys/socket.h>
50: #include <sys/socketvar.h>
51:
52: #include <net/if.h>
53:
54: #include <dev/pci/pcivar.h>
55: #include <dev/pci/pcireg.h>
56: #include <dev/pci/pcidevs.h>
57:
58: #include <dev/ic/midwayreg.h>
59: #include <dev/ic/midwayvar.h>
60:
61:
62: /*
63: * local structures
64: */
65:
66: struct en_pci_softc {
67: /* bus independent stuff */
68: struct en_softc esc; /* includes "device" structure */
69:
70: /* PCI bus glue */
71: void *sc_ih; /* interrupt handle */
72: pci_chipset_tag_t en_pc; /* for PCI calls */
73:
74: };
75:
76: /*
77: * local defines (PCI specific stuff)
78: */
79:
80: /*
81: * address of config base memory address register in PCI config space
82: * (this is card specific)
83: */
84:
85: #define PCI_CBMA 0x10
86:
87: /*
88: * tonga (pci bridge). ENI cards only!
89: */
90:
91: #define EN_TONGA 0x60 /* PCI config addr of tonga reg */
92:
93: #define TONGA_SWAP_DMA 0x80 /* endian swap control */
94: #define TONGA_SWAP_BYTE 0x40
95: #define TONGA_SWAP_WORD 0x20
96:
97: /*
98: * adaptec pci bridge. ADP cards only!
99: */
100:
101: #define ADP_PCIREG 0x050040 /* PCI control register */
102:
103: #define ADP_PCIREG_RESET 0x1 /* reset card */
104: #define ADP_PCIREG_IENABLE 0x2 /* interrupt enable */
105: #define ADP_PCIREG_SWAP_WORD 0x4 /* swap byte on slave access */
106: #define ADP_PCIREG_SWAP_DMA 0x8 /* swap bytes on DMA */
107:
108: /*
109: * prototypes
110: */
111:
112: static int en_pci_match(struct device *, void *, void *);
113: static void en_pci_attach(struct device *, struct device *, void *);
114:
115: /*
116: * PCI autoconfig attachments
117: */
118:
119: struct cfattach en_pci_ca = {
120: sizeof(struct en_pci_softc), en_pci_match, en_pci_attach,
121: };
122:
123: #if !defined(MIDWAY_ENIONLY)
124:
125: static void adp_busreset(void *);
126:
127: /*
128: * bus specific reset function [ADP only!]
129: */
130:
131: static void adp_busreset(v)
132:
133: void *v;
134:
135: {
136: struct en_softc *sc = (struct en_softc *) v;
137: u_int32_t dummy;
138:
139: bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, ADP_PCIREG_RESET);
140: DELAY(1000); /* let it reset */
141: dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG);
142: bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG,
143: (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA|ADP_PCIREG_IENABLE));
144: dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG);
145: if ((dummy & (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA)) !=
146: (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA))
147: printf("adp_busreset: Adaptec ATM did NOT reset!\n");
148:
149: }
150: #endif
151:
152: /***********************************************************************/
153:
154: /*
155: * autoconfig stuff
156: */
157:
158: static int en_pci_match(parent, match, aux)
159:
160: struct device *parent;
161: void *match;
162: void *aux;
163:
164: {
165: struct pci_attach_args *pa = (struct pci_attach_args *) aux;
166:
167: #if !defined(MIDWAY_ADPONLY)
168: if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_EFFICIENTNETS &&
169: (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PF ||
170: PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PA))
171: return 1;
172: #endif
173:
174: #if !defined(MIDWAY_ENIONLY)
175: if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ADP &&
176: (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ADP_AIC5900 ||
177: PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ADP_AIC5905))
178: return 1;
179: #endif
180:
181: return 0;
182: }
183:
184:
185: static void en_pci_attach(parent, self, aux)
186:
187: struct device *parent, *self;
188: void *aux;
189:
190: {
191: struct en_softc *sc = (void *)self;
192: struct en_pci_softc *scp = (void *)self;
193: struct pci_attach_args *pa = aux;
194: pci_intr_handle_t ih;
195: const char *intrstr;
196: int retval;
197:
198: sc->is_adaptec = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ADP) ? 1 : 0;
199: scp->en_pc = pa->pa_pc;
200:
201: /*
202: * interrupt map
203: */
204:
205: if (pci_intr_map(pa, &ih)) {
206: printf(": couldn't map interrupt\n");
207: return;
208: }
209: intrstr = pci_intr_string(scp->en_pc, ih);
210: scp->sc_ih = pci_intr_establish(scp->en_pc, ih, IPL_NET, en_intr, sc,
211: sc->sc_dev.dv_xname);
212: if (scp->sc_ih == NULL) {
213: printf(": couldn't establish interrupt");
214: if (intrstr != NULL)
215: printf(" at %s", intrstr);
216: printf("\n");
217: return;
218: }
219: sc->ipl = 1; /* XXX */
220:
221: /*
222: * memory map
223: */
224:
225: retval = pci_mapreg_map(pa, PCI_CBMA, PCI_MAPREG_TYPE_MEM, 0,
226: &sc->en_memt, &sc->en_base, NULL, &sc->en_obmemsz, 0);
227:
228: if (retval) {
229: printf(": couldn't map memory\n");
230: return;
231: }
232:
233: printf(": %s\n", intrstr);
234:
235: /*
236: * set up pci bridge
237: */
238:
239: #if !defined(MIDWAY_ENIONLY)
240: if (sc->is_adaptec) {
241: sc->en_busreset = adp_busreset;
242: adp_busreset(sc);
243: }
244: #endif
245:
246: #if !defined(MIDWAY_ADPONLY)
247: if (!sc->is_adaptec) {
248: sc->en_busreset = NULL;
249: pci_conf_write(scp->en_pc, pa->pa_tag, EN_TONGA,
250: (TONGA_SWAP_DMA|TONGA_SWAP_WORD));
251: }
252: #endif
253:
254: /*
255: * done PCI specific stuff
256: */
257:
258: en_attach(sc);
259:
260: }
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