1 /*
2 Mantis PCI bridge driver
3
4 Copyright (C) Manu Abraham (abraham.manu@gmail.com)
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 */
20
21 #include <linux/signal.h>
22 #include <linux/slab.h>
23 #include <linux/sched.h>
24 #include <linux/interrupt.h>
25
26 #include "dmxdev.h"
27 #include "dvbdev.h"
28 #include "dvb_demux.h"
29 #include "dvb_frontend.h"
30 #include "dvb_net.h"
31
32 #include "mantis_common.h"
33 #include "mantis_link.h"
34 #include "mantis_hif.h"
35 #include "mantis_reg.h"
36
37 #include "mantis_ca.h"
38
mantis_ca_read_attr_mem(struct dvb_ca_en50221 * en50221,int slot,int addr)39 static int mantis_ca_read_attr_mem(struct dvb_ca_en50221 *en50221, int slot, int addr)
40 {
41 struct mantis_ca *ca = en50221->data;
42 struct mantis_pci *mantis = ca->ca_priv;
43
44 dprintk(MANTIS_DEBUG, 1, "Slot(%d): Request Attribute Mem Read", slot);
45
46 if (slot != 0)
47 return -EINVAL;
48
49 return mantis_hif_read_mem(ca, addr);
50 }
51
mantis_ca_write_attr_mem(struct dvb_ca_en50221 * en50221,int slot,int addr,u8 data)52 static int mantis_ca_write_attr_mem(struct dvb_ca_en50221 *en50221, int slot, int addr, u8 data)
53 {
54 struct mantis_ca *ca = en50221->data;
55 struct mantis_pci *mantis = ca->ca_priv;
56
57 dprintk(MANTIS_DEBUG, 1, "Slot(%d): Request Attribute Mem Write", slot);
58
59 if (slot != 0)
60 return -EINVAL;
61
62 return mantis_hif_write_mem(ca, addr, data);
63 }
64
mantis_ca_read_cam_ctl(struct dvb_ca_en50221 * en50221,int slot,u8 addr)65 static int mantis_ca_read_cam_ctl(struct dvb_ca_en50221 *en50221, int slot, u8 addr)
66 {
67 struct mantis_ca *ca = en50221->data;
68 struct mantis_pci *mantis = ca->ca_priv;
69
70 dprintk(MANTIS_DEBUG, 1, "Slot(%d): Request CAM control Read", slot);
71
72 if (slot != 0)
73 return -EINVAL;
74
75 return mantis_hif_read_iom(ca, addr);
76 }
77
mantis_ca_write_cam_ctl(struct dvb_ca_en50221 * en50221,int slot,u8 addr,u8 data)78 static int mantis_ca_write_cam_ctl(struct dvb_ca_en50221 *en50221, int slot, u8 addr, u8 data)
79 {
80 struct mantis_ca *ca = en50221->data;
81 struct mantis_pci *mantis = ca->ca_priv;
82
83 dprintk(MANTIS_DEBUG, 1, "Slot(%d): Request CAM control Write", slot);
84
85 if (slot != 0)
86 return -EINVAL;
87
88 return mantis_hif_write_iom(ca, addr, data);
89 }
90
mantis_ca_slot_reset(struct dvb_ca_en50221 * en50221,int slot)91 static int mantis_ca_slot_reset(struct dvb_ca_en50221 *en50221, int slot)
92 {
93 struct mantis_ca *ca = en50221->data;
94 struct mantis_pci *mantis = ca->ca_priv;
95
96 dprintk(MANTIS_DEBUG, 1, "Slot(%d): Slot RESET", slot);
97 udelay(500); /* Wait.. */
98 mmwrite(0xda, MANTIS_PCMCIA_RESET); /* Leading edge assert */
99 udelay(500);
100 mmwrite(0x00, MANTIS_PCMCIA_RESET); /* Trailing edge deassert */
101 msleep(1000);
102 dvb_ca_en50221_camready_irq(&ca->en50221, 0);
103
104 return 0;
105 }
106
mantis_ca_slot_shutdown(struct dvb_ca_en50221 * en50221,int slot)107 static int mantis_ca_slot_shutdown(struct dvb_ca_en50221 *en50221, int slot)
108 {
109 struct mantis_ca *ca = en50221->data;
110 struct mantis_pci *mantis = ca->ca_priv;
111
112 dprintk(MANTIS_DEBUG, 1, "Slot(%d): Slot shutdown", slot);
113
114 return 0;
115 }
116
mantis_ts_control(struct dvb_ca_en50221 * en50221,int slot)117 static int mantis_ts_control(struct dvb_ca_en50221 *en50221, int slot)
118 {
119 struct mantis_ca *ca = en50221->data;
120 struct mantis_pci *mantis = ca->ca_priv;
121
122 dprintk(MANTIS_DEBUG, 1, "Slot(%d): TS control", slot);
123 /* mantis_set_direction(mantis, 1); */ /* Enable TS through CAM */
124
125 return 0;
126 }
127
mantis_slot_status(struct dvb_ca_en50221 * en50221,int slot,int open)128 static int mantis_slot_status(struct dvb_ca_en50221 *en50221, int slot, int open)
129 {
130 struct mantis_ca *ca = en50221->data;
131 struct mantis_pci *mantis = ca->ca_priv;
132
133 dprintk(MANTIS_DEBUG, 1, "Slot(%d): Poll Slot status", slot);
134
135 if (ca->slot_state == MODULE_INSERTED) {
136 dprintk(MANTIS_DEBUG, 1, "CA Module present and ready");
137 return DVB_CA_EN50221_POLL_CAM_PRESENT | DVB_CA_EN50221_POLL_CAM_READY;
138 } else {
139 dprintk(MANTIS_DEBUG, 1, "CA Module not present or not ready");
140 }
141
142 return 0;
143 }
144
mantis_ca_init(struct mantis_pci * mantis)145 int mantis_ca_init(struct mantis_pci *mantis)
146 {
147 struct dvb_adapter *dvb_adapter = &mantis->dvb_adapter;
148 struct mantis_ca *ca;
149 int ca_flags = 0, result;
150
151 dprintk(MANTIS_DEBUG, 1, "Initializing Mantis CA");
152 ca = kzalloc(sizeof(struct mantis_ca), GFP_KERNEL);
153 if (!ca) {
154 dprintk(MANTIS_ERROR, 1, "Out of memory!, exiting ..");
155 result = -ENOMEM;
156 goto err;
157 }
158
159 ca->ca_priv = mantis;
160 mantis->mantis_ca = ca;
161 ca_flags = DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE;
162 /* register CA interface */
163 ca->en50221.owner = THIS_MODULE;
164 ca->en50221.read_attribute_mem = mantis_ca_read_attr_mem;
165 ca->en50221.write_attribute_mem = mantis_ca_write_attr_mem;
166 ca->en50221.read_cam_control = mantis_ca_read_cam_ctl;
167 ca->en50221.write_cam_control = mantis_ca_write_cam_ctl;
168 ca->en50221.slot_reset = mantis_ca_slot_reset;
169 ca->en50221.slot_shutdown = mantis_ca_slot_shutdown;
170 ca->en50221.slot_ts_enable = mantis_ts_control;
171 ca->en50221.poll_slot_status = mantis_slot_status;
172 ca->en50221.data = ca;
173
174 mutex_init(&ca->ca_lock);
175
176 init_waitqueue_head(&ca->hif_data_wq);
177 init_waitqueue_head(&ca->hif_opdone_wq);
178 init_waitqueue_head(&ca->hif_write_wq);
179
180 dprintk(MANTIS_ERROR, 1, "Registering EN50221 device");
181 result = dvb_ca_en50221_init(dvb_adapter, &ca->en50221, ca_flags, 1);
182 if (result != 0) {
183 dprintk(MANTIS_ERROR, 1, "EN50221: Initialization failed <%d>", result);
184 goto err;
185 }
186 dprintk(MANTIS_ERROR, 1, "Registered EN50221 device");
187 mantis_evmgr_init(ca);
188 return 0;
189 err:
190 kfree(ca);
191 return result;
192 }
193 EXPORT_SYMBOL_GPL(mantis_ca_init);
194
mantis_ca_exit(struct mantis_pci * mantis)195 void mantis_ca_exit(struct mantis_pci *mantis)
196 {
197 struct mantis_ca *ca = mantis->mantis_ca;
198
199 dprintk(MANTIS_DEBUG, 1, "Mantis CA exit");
200
201 mantis_evmgr_exit(ca);
202 dprintk(MANTIS_ERROR, 1, "Unregistering EN50221 device");
203 if (ca)
204 dvb_ca_en50221_release(&ca->en50221);
205
206 kfree(ca);
207 }
208 EXPORT_SYMBOL_GPL(mantis_ca_exit);
209