1// SPDX-License-Identifier: GPL-2.0 2/* 3 * Linux driver for digital TV devices equipped with B2C2 FlexcopII(b)/III 4 * flexcop-hw-filter.c - pid and mac address filtering and control functions 5 * see flexcop.c for copyright information 6 */ 7#include "flexcop.h" 8 9static void flexcop_rcv_data_ctrl(struct flexcop_device *fc, int onoff) 10{ 11 flexcop_set_ibi_value(ctrl_208, Rcv_Data_sig, onoff); 12 deb_ts("rcv_data is now: '%s'\n", onoff ? "on" : "off"); 13} 14 15void flexcop_smc_ctrl(struct flexcop_device *fc, int onoff) 16{ 17 flexcop_set_ibi_value(ctrl_208, SMC_Enable_sig, onoff); 18} 19 20static void flexcop_null_filter_ctrl(struct flexcop_device *fc, int onoff) 21{ 22 flexcop_set_ibi_value(ctrl_208, Null_filter_sig, onoff); 23} 24 25void flexcop_set_mac_filter(struct flexcop_device *fc, u8 mac[6]) 26{ 27 flexcop_ibi_value v418, v41c; 28 v41c = fc->read_ibi_reg(fc, mac_address_41c); 29 30 v418.mac_address_418.MAC1 = mac[0]; 31 v418.mac_address_418.MAC2 = mac[1]; 32 v418.mac_address_418.MAC3 = mac[2]; 33 v418.mac_address_418.MAC6 = mac[3]; 34 v41c.mac_address_41c.MAC7 = mac[4]; 35 v41c.mac_address_41c.MAC8 = mac[5]; 36 37 fc->write_ibi_reg(fc, mac_address_418, v418); 38 fc->write_ibi_reg(fc, mac_address_41c, v41c); 39} 40 41void flexcop_mac_filter_ctrl(struct flexcop_device *fc, int onoff) 42{ 43 flexcop_set_ibi_value(ctrl_208, MAC_filter_Mode_sig, onoff); 44} 45 46static void flexcop_pid_group_filter(struct flexcop_device *fc, 47 u16 pid, u16 mask) 48{ 49 /* index_reg_310.extra_index_reg need to 0 or 7 to work */ 50 flexcop_ibi_value v30c; 51 v30c.pid_filter_30c_ext_ind_0_7.Group_PID = pid; 52 v30c.pid_filter_30c_ext_ind_0_7.Group_mask = mask; 53 fc->write_ibi_reg(fc, pid_filter_30c, v30c); 54} 55 56static void flexcop_pid_group_filter_ctrl(struct flexcop_device *fc, int onoff) 57{ 58 flexcop_set_ibi_value(ctrl_208, Mask_filter_sig, onoff); 59} 60 61/* this fancy define reduces the code size of the quite similar PID controlling of 62 * the first 6 PIDs 63 */ 64 65#define pid_ctrl(vregname,field,enablefield,trans_field,transval) \ 66 flexcop_ibi_value vpid = fc->read_ibi_reg(fc, vregname), \ 67v208 = fc->read_ibi_reg(fc, ctrl_208); \ 68vpid.vregname.field = onoff ? pid : 0x1fff; \ 69vpid.vregname.trans_field = transval; \ 70v208.ctrl_208.enablefield = onoff; \ 71fc->write_ibi_reg(fc, vregname, vpid); \ 72fc->write_ibi_reg(fc, ctrl_208, v208) 73 74static void flexcop_pid_Stream1_PID_ctrl(struct flexcop_device *fc, 75 u16 pid, int onoff) 76{ 77 pid_ctrl(pid_filter_300, Stream1_PID, Stream1_filter_sig, 78 Stream1_trans, 0); 79} 80 81static void flexcop_pid_Stream2_PID_ctrl(struct flexcop_device *fc, 82 u16 pid, int onoff) 83{ 84 pid_ctrl(pid_filter_300, Stream2_PID, Stream2_filter_sig, 85 Stream2_trans, 0); 86} 87 88static void flexcop_pid_PCR_PID_ctrl(struct flexcop_device *fc, 89 u16 pid, int onoff) 90{ 91 pid_ctrl(pid_filter_304, PCR_PID, PCR_filter_sig, PCR_trans, 0); 92} 93 94static void flexcop_pid_PMT_PID_ctrl(struct flexcop_device *fc, 95 u16 pid, int onoff) 96{ 97 pid_ctrl(pid_filter_304, PMT_PID, PMT_filter_sig, PMT_trans, 0); 98} 99 100static void flexcop_pid_EMM_PID_ctrl(struct flexcop_device *fc, 101 u16 pid, int onoff) 102{ 103 pid_ctrl(pid_filter_308, EMM_PID, EMM_filter_sig, EMM_trans, 0); 104} 105 106static void flexcop_pid_ECM_PID_ctrl(struct flexcop_device *fc, 107 u16 pid, int onoff) 108{ 109 pid_ctrl(pid_filter_308, ECM_PID, ECM_filter_sig, ECM_trans, 0); 110} 111 112static void flexcop_pid_control(struct flexcop_device *fc, 113 int index, u16 pid, int onoff) 114{ 115 if (pid == 0x2000) 116 return; 117 118 deb_ts("setting pid: %5d %04x at index %d '%s'\n", 119 pid, pid, index, onoff ? "on" : "off"); 120 121 /* First 6 can be buggy - skip over them if option set */ 122 if (fc->skip_6_hw_pid_filter) 123 index += 6; 124 125 /* We could use bit magic here to reduce source code size. 126 * I decided against it, but to use the real register names */ 127 switch (index) { 128 case 0: 129 flexcop_pid_Stream1_PID_ctrl(fc, pid, onoff); 130 break; 131 case 1: 132 flexcop_pid_Stream2_PID_ctrl(fc, pid, onoff); 133 break; 134 case 2: 135 flexcop_pid_PCR_PID_ctrl(fc, pid, onoff); 136 break; 137 case 3: 138 flexcop_pid_PMT_PID_ctrl(fc, pid, onoff); 139 break; 140 case 4: 141 flexcop_pid_EMM_PID_ctrl(fc, pid, onoff); 142 break; 143 case 5: 144 flexcop_pid_ECM_PID_ctrl(fc, pid, onoff); 145 break; 146 default: 147 if (fc->has_32_hw_pid_filter && index < 38) { 148 flexcop_ibi_value vpid, vid; 149 150 /* set the index */ 151 vid = fc->read_ibi_reg(fc, index_reg_310); 152 vid.index_reg_310.index_reg = index - 6; 153 fc->write_ibi_reg(fc, index_reg_310, vid); 154 155 vpid = fc->read_ibi_reg(fc, pid_n_reg_314); 156 vpid.pid_n_reg_314.PID = onoff ? pid : 0x1fff; 157 vpid.pid_n_reg_314.PID_enable_bit = onoff; 158 fc->write_ibi_reg(fc, pid_n_reg_314, vpid); 159 } 160 break; 161 } 162} 163 164static int flexcop_toggle_fullts_streaming(struct flexcop_device *fc, int onoff) 165{ 166 if (fc->fullts_streaming_state != onoff) { 167 deb_ts("%s full TS transfer\n",onoff ? "enabling" : "disabling"); 168 flexcop_pid_group_filter(fc, 0, 0x1fe0 * (!onoff)); 169 flexcop_pid_group_filter_ctrl(fc, onoff); 170 fc->fullts_streaming_state = onoff; 171 } 172 return 0; 173} 174 175int flexcop_pid_feed_control(struct flexcop_device *fc, 176 struct dvb_demux_feed *dvbdmxfeed, int onoff) 177{ 178 int max_pid_filter = 6; 179 180 max_pid_filter -= 6 * fc->skip_6_hw_pid_filter; 181 max_pid_filter += 32 * fc->has_32_hw_pid_filter; 182 183 fc->feedcount += onoff ? 1 : -1; /* the number of PIDs/Feed currently requested */ 184 if (dvbdmxfeed->index >= max_pid_filter) 185 fc->extra_feedcount += onoff ? 1 : -1; 186 187 /* toggle complete-TS-streaming when: 188 * - pid_filtering is not enabled and it is the first or last feed requested 189 * - pid_filtering is enabled, 190 * - but the number of requested feeds is exceeded 191 * - or the requested pid is 0x2000 */ 192 193 if (!fc->pid_filtering && fc->feedcount == onoff) 194 flexcop_toggle_fullts_streaming(fc, onoff); 195 196 if (fc->pid_filtering) { 197 flexcop_pid_control \ 198 (fc, dvbdmxfeed->index, dvbdmxfeed->pid, onoff); 199 200 if (fc->extra_feedcount > 0) 201 flexcop_toggle_fullts_streaming(fc, 1); 202 else if (dvbdmxfeed->pid == 0x2000) 203 flexcop_toggle_fullts_streaming(fc, onoff); 204 else 205 flexcop_toggle_fullts_streaming(fc, 0); 206 } 207 208 /* if it was the first or last feed request change the stream-status */ 209 if (fc->feedcount == onoff) { 210 flexcop_rcv_data_ctrl(fc, onoff); 211 if (fc->stream_control) /* device specific stream control */ 212 fc->stream_control(fc, onoff); 213 214 /* feeding stopped -> reset the flexcop filter*/ 215 if (onoff == 0) { 216 flexcop_reset_block_300(fc); 217 flexcop_hw_filter_init(fc); 218 } 219 } 220 return 0; 221} 222EXPORT_SYMBOL(flexcop_pid_feed_control); 223 224void flexcop_hw_filter_init(struct flexcop_device *fc) 225{ 226 int i; 227 flexcop_ibi_value v; 228 int max_pid_filter = 6; 229 230 max_pid_filter -= 6 * fc->skip_6_hw_pid_filter; 231 max_pid_filter += 32 * fc->has_32_hw_pid_filter; 232 233 for (i = 0; i < max_pid_filter; i++) 234 flexcop_pid_control(fc, i, 0x1fff, 0); 235 236 flexcop_pid_group_filter(fc, 0, 0x1fe0); 237 flexcop_pid_group_filter_ctrl(fc, 0); 238 239 v = fc->read_ibi_reg(fc, pid_filter_308); 240 v.pid_filter_308.EMM_filter_4 = 1; 241 v.pid_filter_308.EMM_filter_6 = 0; 242 fc->write_ibi_reg(fc, pid_filter_308, v); 243 244 flexcop_null_filter_ctrl(fc, 1); 245} 246