summaryrefslogtreecommitdiff
path: root/sys/dev/pci/if_atw_pci.c
blob: 1a3f1e4279fb3a791218629b5bf171f3b5defbc2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
/*	$OpenBSD: if_atw_pci.c,v 1.12 2009/06/02 15:13:58 jsg Exp $	*/
/*	$NetBSD: if_atw_pci.c,v 1.7 2004/07/23 07:07:55 dyoung Exp $	*/

/*-
 * Copyright (c) 1998, 1999, 2000, 2002 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
 * NASA Ames Research Center; Charles M. Hannum; and David Young.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * PCI bus front-end for the ADMtek ADM8211 802.11 MAC/BBP chip.
 *
 * Derived from the ``Tulip'' PCI bus front-end.
 */

#include <sys/param.h>
#include <sys/systm.h> 
#include <sys/mbuf.h>   
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/device.h>

#include <machine/endian.h>
 
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/if_ether.h>
#endif

#include <net80211/ieee80211_radiotap.h>
#include <net80211/ieee80211_var.h>

#include <machine/bus.h>
#include <machine/intr.h>

#include <dev/ic/atwreg.h>
#include <dev/ic/rf3000reg.h>
#include <dev/ic/si4136reg.h>
#include <dev/ic/atwvar.h>

#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcidevs.h>

/*
 * PCI configuration space registers used by the ADM8211.
 */
#define	ATW_PCI_IOBA		0x10	/* i/o mapped base */
#define	ATW_PCI_MMBA		0x14	/* memory mapped base */

struct atw_pci_softc {
	struct atw_softc	psc_atw;	/* real ADM8211 softc */

	pci_intr_handle_t	psc_ih;		/* interrupt handle */
	void			*psc_intrcookie;

	pci_chipset_tag_t	psc_pc;		/* our PCI chipset */
	pcitag_t		psc_pcitag;	/* our PCI tag */
};

int	atw_pci_match(struct device *, void *, void *);
void	atw_pci_attach(struct device *, struct device *, void *);
int	atw_pci_detach(struct device *, int);

struct cfattach atw_pci_ca = {
    sizeof (struct atw_softc), atw_pci_match, atw_pci_attach, atw_pci_detach
};

const struct pci_matchid atw_pci_devices[] = {
	{ PCI_VENDOR_ADMTEK,		PCI_PRODUCT_ADMTEK_ADM8211 },
	{ PCI_VENDOR_3COM,		PCI_PRODUCT_3COM_3CRSHPW796 }
};

int
atw_pci_match(struct device *parent, void *match, void *aux)
{
	return (pci_matchbyid((struct pci_attach_args *)aux, atw_pci_devices,
	    sizeof(atw_pci_devices)/sizeof(atw_pci_devices[0])));
}

static int
atw_pci_enable(struct atw_softc *sc)
{
	struct atw_pci_softc *psc = (void *)sc;

	/* Establish the interrupt. */
	psc->psc_intrcookie = pci_intr_establish(psc->psc_pc, psc->psc_ih,
	    IPL_NET, atw_intr, sc, sc->sc_dev.dv_xname);
	if (psc->psc_intrcookie == NULL) {
		printf("%s: unable to establish interrupt\n",
		    sc->sc_dev.dv_xname);
		return (1);
	}

	return (0);
}

static void
atw_pci_disable(struct atw_softc *sc)
{
	struct atw_pci_softc *psc = (void *)sc;

	/* Unhook the interrupt handler. */
	pci_intr_disestablish(psc->psc_pc, psc->psc_intrcookie);
	psc->psc_intrcookie = NULL;
}

void
atw_pci_attach(struct device *parent, struct device *self, void *aux)
{
	struct atw_pci_softc *psc = (void *) self;
	struct atw_softc *sc = &psc->psc_atw;
	struct pci_attach_args *pa = aux;
	pci_chipset_tag_t pc = pa->pa_pc;
	const char *intrstr = NULL;
	bus_space_tag_t iot, memt;
	bus_space_handle_t ioh, memh;
	bus_size_t iosize, memsize;
	int ioh_valid, memh_valid;
	int state;

	psc->psc_pc = pa->pa_pc;
	psc->psc_pcitag = pa->pa_tag;

	/*
	 * No power management hooks.
	 * XXX Maybe we should add some!
	 */
	sc->sc_flags |= ATWF_ENABLED;

	/*
	 * Get revision info, and set some chip-specific variables.
	 */
	sc->sc_rev = PCI_REVISION(pa->pa_class);

	/*
	 * Check to see if the device is in power-save mode, and
	 * being it out if necessary.
	 *
	 * XXX This code comes almost verbatim from if_tlp_pci.c. I do
	 * not understand it. Tulip clears the "sleep mode" bit in the
	 * CFDA register, first.  There is an equivalent (?) register at the
	 * same place in the ADM8211, but the docs do not assign its bits
	 * any meanings. -dcy
	 */
	state = pci_set_powerstate(pc, pa->pa_tag, PCI_PMCSR_STATE_D0);
	if (state == PCI_PMCSR_STATE_D3) {
		/*
		 * The card has lost all configuration data in
		 * this state, so punt.
		 */
		printf(": unable to wake up from power state D3, "
		    "reboot required.\n");
		return;
	}

	/*
	 * Map the device.
	 */
	ioh_valid = (pci_mapreg_map(pa, ATW_PCI_IOBA,
	    PCI_MAPREG_TYPE_IO, 0,
	    &iot, &ioh, NULL, &iosize, 0) == 0);
	memh_valid = (pci_mapreg_map(pa, ATW_PCI_MMBA,
	    PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0,
	    &memt, &memh, NULL, &memsize, 0) == 0);

	if (memh_valid) {
		sc->sc_st = memt;
		sc->sc_sh = memh;
		sc->sc_mapsize = memsize;
	} else if (ioh_valid) {
		sc->sc_st = iot;
		sc->sc_sh = ioh;
		sc->sc_mapsize = iosize;
	} else {
		printf(": unable to map device registers\n");
		return;
	}

	sc->sc_dmat = pa->pa_dmat;

	/*
	 * Get the cacheline size.
	 */
	sc->sc_cacheline = PCI_CACHELINE(pci_conf_read(pc, pa->pa_tag,
	    PCI_BHLC_REG));

	/*
	 * Get PCI data moving command info.
	 */
	if (pa->pa_flags & PCI_FLAGS_MRL_OKAY) /* read line */
		sc->sc_flags |= ATWF_MRL;
	if (pa->pa_flags & PCI_FLAGS_MRM_OKAY) /* read multiple */
		sc->sc_flags |= ATWF_MRM;
	if (pa->pa_flags & PCI_FLAGS_MWI_OKAY) /* write invalidate */
		sc->sc_flags |= ATWF_MWI;

	/*
	 * Map and establish our interrupt.
	 */
	if (pci_intr_map(pa, &psc->psc_ih)) {
		printf(": unable to map interrupt\n");
		return;
	}
	intrstr = pci_intr_string(pc, psc->psc_ih); 
	psc->psc_intrcookie = pci_intr_establish(pc, psc->psc_ih, IPL_NET,
	    atw_intr, sc, sc->sc_dev.dv_xname);
	if (psc->psc_intrcookie == NULL) {
		printf(": unable to establish interrupt");
		if (intrstr != NULL)
			printf(" at %s", intrstr);
		printf("\n");
		return;
	}

	printf(": %s\n", intrstr);

	sc->sc_enable = atw_pci_enable;
	sc->sc_disable = atw_pci_disable;

	/*
	 * Finish off the attach.
	 */
	atw_attach(sc);
}

int
atw_pci_detach(struct device *self, int flags)
{
	struct atw_pci_softc *psc = (void *)self;
	struct atw_softc *sc = &psc->psc_atw;
	int rv;

	rv = atw_detach(sc);
	if (rv)
		return (rv);

	if (psc->psc_intrcookie != NULL)
		pci_intr_disestablish(psc->psc_pc, psc->psc_intrcookie);

	bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_mapsize);

	return (0);
}