1/*-
2 * Copyright (c) 2001 Doug Rabson
3 * Copyright (c) 2002, 2006 Marcel Moolenaar
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD$");
30
31#include <sys/param.h>
32#include <netinet/in.h>
33#include <netinet/in_systm.h>
34
35#include <stand.h>
36#include <net.h>
37#include <netif.h>
38
39#include <dev_net.c>
40
41#include <efi.h>
42#include <efilib.h>
43
44static EFI_GUID sn_guid = EFI_SIMPLE_NETWORK_PROTOCOL;
45
46static void efinet_end(struct netif *);
47static int efinet_get(struct iodesc *, void *, size_t, time_t);
48static void efinet_init(struct iodesc *, void *);
49static int efinet_match(struct netif *, void *);
50static int efinet_probe(struct netif *, void *);
51static int efinet_put(struct iodesc *, void *, size_t);
52
53struct netif_driver efinetif = {
54	.netif_bname = "efinet",
55	.netif_match = efinet_match,
56	.netif_probe = efinet_probe,
57	.netif_init = efinet_init,
58	.netif_get = efinet_get,
59	.netif_put = efinet_put,
60	.netif_end = efinet_end,
61	.netif_ifs = NULL,
62	.netif_nifs = 0
63};
64
65#ifdef EFINET_DEBUG
66static void
67dump_mode(EFI_SIMPLE_NETWORK_MODE *mode)
68{
69	int i;
70
71	printf("State                 = %x\n", mode->State);
72	printf("HwAddressSize         = %u\n", mode->HwAddressSize);
73	printf("MediaHeaderSize       = %u\n", mode->MediaHeaderSize);
74	printf("MaxPacketSize         = %u\n", mode->MaxPacketSize);
75	printf("NvRamSize             = %u\n", mode->NvRamSize);
76	printf("NvRamAccessSize       = %u\n", mode->NvRamAccessSize);
77	printf("ReceiveFilterMask     = %x\n", mode->ReceiveFilterMask);
78	printf("ReceiveFilterSetting  = %u\n", mode->ReceiveFilterSetting);
79	printf("MaxMCastFilterCount   = %u\n", mode->MaxMCastFilterCount);
80	printf("MCastFilterCount      = %u\n", mode->MCastFilterCount);
81	printf("MCastFilter           = {");
82	for (i = 0; i < mode->MCastFilterCount; i++)
83		printf(" %s", ether_sprintf(mode->MCastFilter[i].Addr));
84	printf(" }\n");
85	printf("CurrentAddress        = %s\n",
86	    ether_sprintf(mode->CurrentAddress.Addr));
87	printf("BroadcastAddress      = %s\n",
88	    ether_sprintf(mode->BroadcastAddress.Addr));
89	printf("PermanentAddress      = %s\n",
90	    ether_sprintf(mode->PermanentAddress.Addr));
91	printf("IfType                = %u\n", mode->IfType);
92	printf("MacAddressChangeable  = %d\n", mode->MacAddressChangeable);
93	printf("MultipleTxSupported   = %d\n", mode->MultipleTxSupported);
94	printf("MediaPresentSupported = %d\n", mode->MediaPresentSupported);
95	printf("MediaPresent          = %d\n", mode->MediaPresent);
96}
97#endif
98
99static int
100efinet_match(struct netif *nif, void *machdep_hint)
101{
102
103	return (1);
104}
105
106static int
107efinet_probe(struct netif *nif, void *machdep_hint)
108{
109
110	return (0);
111}
112
113static int
114efinet_put(struct iodesc *desc, void *pkt, size_t len)
115{
116	struct netif *nif = desc->io_netif;
117	EFI_SIMPLE_NETWORK *net;
118	EFI_STATUS status;
119	void *buf;
120
121	net = nif->nif_devdata;
122
123	status = net->Transmit(net, 0, len, pkt, 0, 0, 0);
124	if (status != EFI_SUCCESS)
125		return (-1);
126
127	/* Wait for the buffer to be transmitted */
128	do {
129		buf = 0;	/* XXX Is this needed? */
130		status = net->GetStatus(net, 0, &buf);
131		/*
132		 * XXX EFI1.1 and the E1000 card returns a different
133		 * address than we gave.  Sigh.
134		 */
135	} while (status == EFI_SUCCESS && buf == 0);
136
137	/* XXX How do we deal with status != EFI_SUCCESS now? */
138	return ((status == EFI_SUCCESS) ? len : -1);
139}
140
141static int
142efinet_get(struct iodesc *desc, void *pkt, size_t len, time_t timeout)
143{
144	struct netif *nif = desc->io_netif;
145	EFI_SIMPLE_NETWORK *net;
146	EFI_STATUS status;
147	UINTN bufsz;
148	time_t t;
149	char buf[2048];
150
151	net = nif->nif_devdata;
152
153	t = time(0);
154	while ((time(0) - t) < timeout) {
155		bufsz = sizeof(buf);
156		status = net->Receive(net, 0, &bufsz, buf, 0, 0, 0);
157		if (status == EFI_SUCCESS) {
158			/*
159			 * XXX EFI1.1 and the E1000 card trash our
160			 * workspace if we do not do this silly copy.
161			 * Either they are not respecting the len
162			 * value or do not like the alignment.
163			 */
164			if (bufsz > len)
165				bufsz = len;
166			bcopy(buf, pkt, bufsz);
167			return (bufsz);
168		}
169		if (status != EFI_NOT_READY)
170			return (0);
171	}
172
173	return (0);
174}
175
176static void
177efinet_init(struct iodesc *desc, void *machdep_hint)
178{
179	struct netif *nif = desc->io_netif;
180	EFI_SIMPLE_NETWORK *net;
181	EFI_HANDLE h;
182	EFI_STATUS status;
183
184	h = nif->nif_driver->netif_ifs[nif->nif_unit].dif_private;
185	status = BS->HandleProtocol(h, &sn_guid, (VOID **)&nif->nif_devdata);
186	if (status != EFI_SUCCESS) {
187		printf("net%d: cannot start interface (status=%ld)\n",
188		    nif->nif_unit, (long)status);
189		return;
190	}
191
192	net = nif->nif_devdata;
193	if (net->Mode->State == EfiSimpleNetworkStopped) {
194		status = net->Start(net);
195		if (status != EFI_SUCCESS) {
196			printf("net%d: cannot start interface (status=%ld)\n",
197			    nif->nif_unit, (long)status);
198			return;
199		}
200	}
201
202	if (net->Mode->State != EfiSimpleNetworkInitialized) {
203		status = net->Initialize(net, 0, 0);
204		if (status != EFI_SUCCESS) {
205			printf("net%d: cannot init. interface (status=%ld)\n",
206			    nif->nif_unit, (long)status);
207			return;
208		}
209	}
210
211	if (net->Mode->ReceiveFilterSetting == 0) {
212		UINT32 mask = EFI_SIMPLE_NETWORK_RECEIVE_UNICAST |
213		    EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST;
214
215		status = net->ReceiveFilters(net, mask, 0, FALSE, 0, 0);
216		if (status != EFI_SUCCESS) {
217			printf("net%d: cannot set rx. filters (status=%ld)\n",
218			    nif->nif_unit, (long)status);
219			return;
220		}
221	}
222
223#ifdef EFINET_DEBUG
224	dump_mode(net->Mode);
225#endif
226
227	bcopy(net->Mode->CurrentAddress.Addr, desc->myea, 6);
228	desc->xid = 1;
229}
230
231static void
232efinet_end(struct netif *nif)
233{
234	EFI_SIMPLE_NETWORK *net = nif->nif_devdata;
235
236	net->Shutdown(net);
237}
238
239static int efinet_dev_init(void);
240static void efinet_dev_print(int);
241
242struct devsw efinet_dev = {
243	.dv_name = "net",
244	.dv_type = DEVT_NET,
245	.dv_init = efinet_dev_init,
246	.dv_strategy = net_strategy,
247	.dv_open = net_open,
248	.dv_close = net_close,
249	.dv_ioctl = noioctl,
250	.dv_print = efinet_dev_print,
251	.dv_cleanup = NULL
252};
253
254static int
255efinet_dev_init()
256{
257	struct netif_dif *dif;
258	struct netif_stats *stats;
259	EFI_HANDLE *handles;
260	EFI_STATUS status;
261	UINTN sz;
262	int err, i, nifs;
263
264	sz = 0;
265	handles = NULL;
266	status = BS->LocateHandle(ByProtocol, &sn_guid, 0, &sz, 0);
267	if (status == EFI_BUFFER_TOO_SMALL) {
268		handles = (EFI_HANDLE *)malloc(sz);
269		status = BS->LocateHandle(ByProtocol, &sn_guid, 0, &sz,
270		    handles);
271		if (EFI_ERROR(status))
272			free(handles);
273	}
274	if (EFI_ERROR(status))
275		return (efi_status_to_errno(status));
276	nifs = sz / sizeof(EFI_HANDLE);
277	err = efi_register_handles(&efinet_dev, handles, nifs);
278	free(handles);
279	if (err != 0)
280		return (err);
281
282	efinetif.netif_nifs = nifs;
283	efinetif.netif_ifs = calloc(nifs, sizeof(struct netif_dif));
284
285	stats = calloc(nifs, sizeof(struct netif_stats));
286
287	for (i = 0; i < nifs; i++) {
288		dif = &efinetif.netif_ifs[i];
289		dif->dif_unit = i;
290		dif->dif_nsel = 1;
291		dif->dif_stats = &stats[i];
292		dif->dif_private = efi_find_handle(&efinet_dev, i);
293	}
294
295	return (0);
296}
297
298static void
299efinet_dev_print(int verbose)
300{
301	char line[80];
302	EFI_HANDLE h;
303	int unit;
304
305	for (unit = 0, h = efi_find_handle(&efinet_dev, 0);
306	    h != NULL; h = efi_find_handle(&efinet_dev, ++unit)) {
307		sprintf(line, "    %s%d:\n", efinet_dev.dv_name, unit);
308		pager_output(line);
309	}
310}
311