drivers/media/dvb/b2c2/flexcop-hw-filter.c

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