1 /*
2  * Copyright (c) 2013 Broadcom Corporation
3  *
4  * Permission to use, copy, modify, and/or distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 
18  #include <linux/types.h>
19 #include <linux/slab.h>
20 #include <linux/netdevice.h>
21 
22 #include <brcmu_wifi.h>
23 #include "core.h"
24 #include "bus.h"
25 #include "debug.h"
26 #include "proto.h"
27 #include "bcdc.h"
28 #include "msgbuf.h"
29 
30 
31 int brcmf_proto_attach(struct brcmf_pub *drvr)
32 {
33 	struct brcmf_proto *proto;
34 
35 	brcmf_dbg(TRACE, "Enter\n");
36 
37 	proto = kzalloc(sizeof(*proto), GFP_ATOMIC);
38 	if (!proto)
39 		goto fail;
40 
41 	drvr->proto = proto;
42 
43 	if (drvr->bus_if->proto_type == BRCMF_PROTO_BCDC) {
44 		if (brcmf_proto_bcdc_attach(drvr))
45 			goto fail;
46 	} else if (drvr->bus_if->proto_type == BRCMF_PROTO_MSGBUF) {
47 		if (brcmf_proto_msgbuf_attach(drvr))
48 			goto fail;
49 	} else {
50 		brcmf_err("Unsupported proto type %d\n",
51 			  drvr->bus_if->proto_type);
52 		goto fail;
53 	}
54 	if (!proto->tx_queue_data || (proto->hdrpull == NULL) ||
55 	    (proto->query_dcmd == NULL) || (proto->set_dcmd == NULL) ||
56 	    (proto->configure_addr_mode == NULL) ||
57 	    (proto->delete_peer == NULL) || (proto->add_tdls_peer == NULL) ||
58 	    (proto->debugfs_create == NULL)) {
59 		brcmf_err("Not all proto handlers have been installed\n");
60 		goto fail;
61 	}
62 	return 0;
63 
64 fail:
65 	kfree(proto);
66 	drvr->proto = NULL;
67 	return -ENOMEM;
68 }
69 
70 void brcmf_proto_detach(struct brcmf_pub *drvr)
71 {
72 	brcmf_dbg(TRACE, "Enter\n");
73 
74 	if (drvr->proto) {
75 		if (drvr->bus_if->proto_type == BRCMF_PROTO_BCDC)
76 			brcmf_proto_bcdc_detach(drvr);
77 		else if (drvr->bus_if->proto_type == BRCMF_PROTO_MSGBUF)
78 			brcmf_proto_msgbuf_detach(drvr);
79 		kfree(drvr->proto);
80 		drvr->proto = NULL;
81 	}
82 }
83