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