2 * Copyright (C) ST-Ericsson AB 2010
3 * Author: Sjur Brendeland/sjur.brandeland@stericsson.com
4 * License terms: GNU General Public License (GPL) version 2
7 #include <linux/kernel.h>
8 #include <linux/types.h>
9 #include <linux/errno.h>
10 #include <linux/slab.h>
11 #include <net/caif/caif_layer.h>
12 #include <net/caif/cfsrvl.h>
13 #include <net/caif/cfpkt.h>
15 #define SRVL_CTRL_PKT_SIZE 1
16 #define SRVL_FLOW_OFF 0x81
17 #define SRVL_FLOW_ON 0x80
18 #define SRVL_SET_PIN 0x82
19 #define SRVL_CTRL_PKT_SIZE 1
21 #define container_obj(layr) container_of(layr, struct cfsrvl, layer)
23 static void cfservl_ctrlcmd(struct cflayer *layr, enum caif_ctrlcmd ctrl,
26 struct cfsrvl *service = container_obj(layr);
27 caif_assert(layr->up != NULL);
28 caif_assert(layr->up->ctrlcmd != NULL);
30 case CAIF_CTRLCMD_INIT_RSP:
32 layr->up->ctrlcmd(layr->up, ctrl, phyid);
34 case CAIF_CTRLCMD_DEINIT_RSP:
35 case CAIF_CTRLCMD_INIT_FAIL_RSP:
36 service->open = false;
37 layr->up->ctrlcmd(layr->up, ctrl, phyid);
39 case _CAIF_CTRLCMD_PHYIF_FLOW_OFF_IND:
40 if (phyid != service->dev_info.id)
42 if (service->modem_flow_on)
43 layr->up->ctrlcmd(layr->up,
44 CAIF_CTRLCMD_FLOW_OFF_IND, phyid);
45 service->phy_flow_on = false;
47 case _CAIF_CTRLCMD_PHYIF_FLOW_ON_IND:
48 if (phyid != service->dev_info.id)
50 if (service->modem_flow_on) {
51 layr->up->ctrlcmd(layr->up,
52 CAIF_CTRLCMD_FLOW_ON_IND,
55 service->phy_flow_on = true;
57 case CAIF_CTRLCMD_FLOW_OFF_IND:
58 if (service->phy_flow_on) {
59 layr->up->ctrlcmd(layr->up,
60 CAIF_CTRLCMD_FLOW_OFF_IND, phyid);
62 service->modem_flow_on = false;
64 case CAIF_CTRLCMD_FLOW_ON_IND:
65 if (service->phy_flow_on) {
66 layr->up->ctrlcmd(layr->up,
67 CAIF_CTRLCMD_FLOW_ON_IND, phyid);
69 service->modem_flow_on = true;
71 case _CAIF_CTRLCMD_PHYIF_DOWN_IND:
72 /* In case interface is down, let's fake a remove shutdown */
73 layr->up->ctrlcmd(layr->up,
74 CAIF_CTRLCMD_REMOTE_SHUTDOWN_IND, phyid);
76 case CAIF_CTRLCMD_REMOTE_SHUTDOWN_IND:
77 layr->up->ctrlcmd(layr->up, ctrl, phyid);
80 pr_warning("CAIF: %s(): "
81 "Unexpected ctrl in cfsrvl (%d)\n", __func__, ctrl);
82 /* We have both modem and phy flow on, send flow on */
83 layr->up->ctrlcmd(layr->up, ctrl, phyid);
84 service->phy_flow_on = true;
89 static int cfservl_modemcmd(struct cflayer *layr, enum caif_modemcmd ctrl)
91 struct cfsrvl *service = container_obj(layr);
92 caif_assert(layr != NULL);
93 caif_assert(layr->dn != NULL);
94 caif_assert(layr->dn->transmit != NULL);
96 case CAIF_MODEMCMD_FLOW_ON_REQ:
99 struct caif_payload_info *info;
100 u8 flow_on = SRVL_FLOW_ON;
101 pkt = cfpkt_create(SRVL_CTRL_PKT_SIZE);
103 pr_warning("CAIF: %s(): Out of memory\n",
108 if (cfpkt_add_head(pkt, &flow_on, 1) < 0) {
109 pr_err("CAIF: %s(): Packet is erroneous!\n",
114 info = cfpkt_info(pkt);
115 info->channel_id = service->layer.id;
117 info->dev_info = &service->dev_info;
118 return layr->dn->transmit(layr->dn, pkt);
120 case CAIF_MODEMCMD_FLOW_OFF_REQ:
123 struct caif_payload_info *info;
124 u8 flow_off = SRVL_FLOW_OFF;
125 pkt = cfpkt_create(SRVL_CTRL_PKT_SIZE);
127 pr_warning("CAIF: %s(): Out of memory\n",
132 if (cfpkt_add_head(pkt, &flow_off, 1) < 0) {
133 pr_err("CAIF: %s(): Packet is erroneous!\n",
138 info = cfpkt_info(pkt);
139 info->channel_id = service->layer.id;
141 info->dev_info = &service->dev_info;
142 return layr->dn->transmit(layr->dn, pkt);
150 void cfservl_destroy(struct cflayer *layer)
155 void cfsrvl_init(struct cfsrvl *service,
157 struct dev_info *dev_info)
159 caif_assert(offsetof(struct cfsrvl, layer) == 0);
160 service->open = false;
161 service->modem_flow_on = true;
162 service->phy_flow_on = true;
163 service->layer.id = channel_id;
164 service->layer.ctrlcmd = cfservl_ctrlcmd;
165 service->layer.modemcmd = cfservl_modemcmd;
166 service->dev_info = *dev_info;
167 kref_init(&service->ref);
170 void cfsrvl_release(struct kref *kref)
172 struct cfsrvl *service = container_of(kref, struct cfsrvl, ref);
176 bool cfsrvl_ready(struct cfsrvl *service, int *err)
178 if (service->open && service->modem_flow_on && service->phy_flow_on)
180 if (!service->open) {
184 caif_assert(!(service->modem_flow_on && service->phy_flow_on));
188 u8 cfsrvl_getphyid(struct cflayer *layer)
190 struct cfsrvl *servl = container_obj(layer);
191 return servl->dev_info.id;
194 bool cfsrvl_phyid_match(struct cflayer *layer, int phyid)
196 struct cfsrvl *servl = container_obj(layer);
197 return servl->dev_info.id == phyid;