Thanks for your info, I will look at this and see what I can do :)
Oivind
On 6/24/05, Manu Abraham <manu@xxxxxxxxxxx> wrote:
> Oivind wrote:
> > I agree to that. I just want to inform that I am working on exactly
>
> What about an EN50221 parser in the same lines as that of the PMT
> parser.. That would be quite simple and straight forward ..
>
> I was thinking in that lines ..
>
> > that right now. Maybe that code can give some ideas, I'll hopefull be
> > finished tonight.
> >
>
> Try to make it simple ... Originall i had a PMT parser like this, after
> an unhappy ending, i switched on to the current PMT style of parsing ..
>
> The current EN50221 style parsing was quick enough for me, but did not
> seem so in a wider sense ..
>
>
> I wrote a couple of lines for that, but staring at that code and all the
> messages gave me an extreme headache.. If you can give it a shot would
> be nice .. Need to be off this for a few hours at least ..
>
> If you need to take a look at it, here it is .. If you give it a shot in
> similar lines, that would be nice .. since it looks a bit modular..
> Maybe the code could be reused (the same concept i had in userspace with
> ca_zap, ended up making it into a library) by some other driver too ..
>
>
>
> Just to know which parameters are masked i have a function in dst_ca.c,
> debug_twinhan_ca_parameters()..
>
> What that function did was just to modify the EN50221 style message for
> the hardware requirements..
>
> That would be helpful there.. You will find the ASIC bug also there ..
>
>
> Manu
>
>
> /*
> CA-driver for TwinHan DST Frontend/Card
>
> Copyright (C) 2004, 2005 Manu Abraham (manu@xxxxxxxxxxx)
>
> This program is free software; you can redistribute it and/or modify
> it under the terms of the GNU General Public License as published by
> the Free Software Foundation; either version 2 of the License, or
> (at your option) any later version.
>
> This program is distributed in the hope that it will be useful,
> but WITHOUT ANY WARRANTY; without even the implied warranty of
> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> GNU General Public License for more details.
>
> You should have received a copy of the GNU General Public License
> along with this program; if not, write to the Free Software
> Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
> */
>
>
>
> #include <linux/kernel.h>
> #include <linux/module.h>
> #include <linux/init.h>
> #include <linux/string.h>
>
> #include <linux/dvb/ca.h>
> #include "dvbdev.h"
> #include "dvb_frontend.h"
>
> #include "dst_ca.h"
> #include "dst_common.h"
>
> static unsigned int verbose = 5;
> module_param(verbose, int, 0644);
> MODULE_PARM_DESC(verbose, "verbose startup messages, default is 1 (yes)");
>
> static unsigned int debug = 1;
> module_param(debug, int, 0644);
> MODULE_PARM_DESC(debug, "debug messages, default is 1 (yes)");
>
> #define dprintk if (debug) printk
>
> /* Need some more work */
> static int ca_set_slot_descr(void)
> {
> /* We could make this more graceful ? */
> return -EOPNOTSUPP;
> }
>
> /* Need some more work */
> static int ca_set_pid(void)
> {
> /* We could make this more graceful ? */
> return -EOPNOTSUPP;
> }
>
>
> static int put_checksum(u8 *check_string, int length)
> {
> u8 i = 0, checksum = 0;
>
> if (verbose > 3) {
> dprintk("%s: ========================= Checksum calculation ===========================\n", __FUNCTION__);
> dprintk("%s: String Length=[0x%02x]\n", __FUNCTION__, length);
>
> dprintk("%s: String=[", __FUNCTION__);
> }
> while (i < length) {
> if (verbose > 3)
> dprintk(" %02x", check_string[i]);
> checksum += check_string[i];
> i++;
> }
> if (verbose > 3) {
> dprintk(" ]\n");
> dprintk("%s: Sum=[%02x]\n", __FUNCTION__, checksum);
> }
> check_string[length] = ~checksum + 1;
> if (verbose > 3) {
> dprintk("%s: Checksum=[%02x]\n", __FUNCTION__, check_string[length]);
> dprintk("%s: ==========================================================================\n", __FUNCTION__);
> }
>
> return 0;
> }
>
> static int dst_ci_command(struct dst_state* state, u8 * data, u8 *ca_string, u8 len, int read)
> {
> u8 reply;
>
> dst_comm_init(state);
> msleep(65);
>
> if (write_dst(state, data, len)) {
> dprintk("%s: Write not successful, trying to recover\n", __FUNCTION__);
> dst_error_recovery(state);
> return -1;
> }
>
> if ((dst_pio_disable(state)) < 0) {
> dprintk("%s: DST PIO disable failed.\n", __FUNCTION__);
> return -1;
> }
>
> if (read_dst(state, &reply, GET_ACK) < 0) {
> dprintk("%s: Read not successful, trying to recover\n", __FUNCTION__);
> dst_error_recovery(state);
> return -1;
> }
>
> if (read) {
> if (! dst_wait_dst_ready(state, LONG_DELAY)) {
> dprintk("%s: 8820 not ready\n", __FUNCTION__);
> return -1;
> }
>
> if (read_dst(state, ca_string, 128) < 0) { /* Try to make this dynamic */
> dprintk("%s: Read not successful, trying to recover\n", __FUNCTION__);
> dst_error_recovery(state);
> return -1;
> }
> }
>
> return 0;
> }
>
>
> static int dst_put_ci(struct dst_state *state, u8 *data, int len, u8 *ca_string, int read)
> {
> u8 dst_ca_comm_err = 0;
>
> while (dst_ca_comm_err < RETRIES) {
> dst_comm_init(state);
> if (verbose > 2)
> dprintk("%s: Put Command\n", __FUNCTION__);
> if (dst_ci_command(state, data, ca_string, len, read)) { // If error
> dst_error_recovery(state);
> dst_ca_comm_err++; // work required here.
> }
> break;
> }
>
> return 0;
> }
>
>
>
> static int ca_get_app_info(struct dst_state *state)
> {
> static u8 command[8] = {0x07, 0x40, 0x01, 0x00, 0x01, 0x00, 0x00, 0xff};
>
> put_checksum(&command[0], command[0]);
> if ((dst_put_ci(state, command, sizeof(command), state->messages, GET_REPLY)) < 0) {
> dprintk("%s: -->dst_put_ci FAILED !\n", __FUNCTION__);
> return -1;
> }
> if (verbose > 1) {
> dprintk("%s: -->dst_put_ci SUCCESS !\n", __FUNCTION__);
>
> dprintk("%s: ================================ CI Module Application Info ======================================\n", __FUNCTION__);
> dprintk("%s: Application Type=[%d], Application Vendor=[%d], Vendor Code=[%d]\n%s: Application info=[%s]\n",
> __FUNCTION__, state->messages[7], (state->messages[8] << 8) | state->messages[9],
> (state->messages[10] << 8) | state->messages[11], __FUNCTION__, (char *)(&state->messages[12]));
> dprintk("%s: ==================================================================================================\n", __FUNCTION__);
> }
>
> return 0;
> }
>
> static int ca_get_slot_caps(struct dst_state *state, struct ca_caps *p_ca_caps, void *arg)
> {
> int i;
> u8 slot_cap[256];
> static u8 slot_command[8] = {0x07, 0x40, 0x02, 0x00, 0x02, 0x00, 0x00, 0xff};
>
> put_checksum(&slot_command[0], slot_command[0]);
> if ((dst_put_ci(state, slot_command, sizeof (slot_command), slot_cap, GET_REPLY)) < 0) {
> dprintk("%s: -->dst_put_ci FAILED !\n", __FUNCTION__);
> return -1;
> }
> if (verbose > 1)
> dprintk("%s: -->dst_put_ci SUCCESS !\n", __FUNCTION__);
>
> /* Will implement the rest soon */
>
> if (verbose > 1) {
> dprintk("%s: Slot cap = [%d]\n", __FUNCTION__, slot_cap[7]);
> dprintk("===================================\n");
> for (i = 0; i < 8; i++)
> dprintk(" %d", slot_cap[i]);
> dprintk("\n");
> }
>
> p_ca_caps->slot_num = 1;
> p_ca_caps->slot_type = 1;
> p_ca_caps->descr_num = slot_cap[7];
> p_ca_caps->descr_type = 1;
>
>
> if (copy_to_user((struct ca_caps *)arg, p_ca_caps, sizeof (struct ca_caps))) {
> return -EFAULT;
> }
>
> return 0;
> }
>
> /* Need some more work */
> static int ca_get_slot_descr(struct dst_state *state, struct ca_msg *p_ca_message, void *arg)
> {
> return -EOPNOTSUPP;
> }
>
>
> static int ca_get_slot_info(struct dst_state *state, struct ca_slot_info *p_ca_slot_info, void *arg)
> {
> int i;
> static u8 slot_command[8] = {0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff};
>
> u8 *slot_info = state->rxbuffer;
>
> put_checksum(&slot_command[0], 7);
> if ((dst_put_ci(state, slot_command, sizeof (slot_command), slot_info, GET_REPLY)) < 0) {
> dprintk("%s: -->dst_put_ci FAILED !\n", __FUNCTION__);
> return -1;
> }
> if (verbose > 1)
> dprintk("%s: -->dst_put_ci SUCCESS !\n", __FUNCTION__);
>
> /* Will implement the rest soon */
>
> if (verbose > 1) {
> dprintk("%s: Slot info = [%d]\n", __FUNCTION__, slot_info[3]);
> dprintk("===================================\n");
> for (i = 0; i < 8; i++)
> dprintk(" %d", slot_info[i]);
> dprintk("\n");
> }
>
> if (slot_info[4] & 0x80) {
> p_ca_slot_info->flags = CA_CI_MODULE_PRESENT;
> p_ca_slot_info->num = 1;
> p_ca_slot_info->type = CA_CI;
> }
> else if (slot_info[4] & 0x40) {
> p_ca_slot_info->flags = CA_CI_MODULE_READY;
> p_ca_slot_info->num = 1;
> p_ca_slot_info->type = CA_CI;
> }
> else {
> p_ca_slot_info->flags = 0;
> }
>
> if (copy_to_user((struct ca_slot_info *)arg, p_ca_slot_info, sizeof (struct ca_slot_info))) {
> return -EFAULT;
> }
>
> return 0;
> }
>
>
>
>
> static int ca_get_message(struct dst_state *state, struct ca_msg *p_ca_message, void *arg)
> {
> u8 i = 0;
> u32 command = 0;
>
> if (copy_from_user(p_ca_message, (void *)arg, sizeof (struct ca_msg)))
> return -EFAULT;
>
>
> if (p_ca_message->msg) {
> if (verbose > 3)
> dprintk("Message = [%02x %02x %02x]\n", p_ca_message->msg[0], p_ca_message->msg[1], p_ca_message->msg[2]);
>
> for (i = 0; i < 3; i++) {
> command = command | p_ca_message->msg[i];
> if (i < 2)
> command = command << 8;
> }
> if (verbose > 3)
> dprintk("%s:Command=[0x%x]\n", __FUNCTION__, command);
>
> switch (command) {
> case CA_APP_INFO:
> memcpy(p_ca_message->msg, state->messages, 128);
> if (copy_to_user((void *)arg, p_ca_message, sizeof (struct ca_msg)) )
> return -EFAULT;
> break;
> }
> }
>
> return 0;
> }
>
> static int handle_dst_tag(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer, u32 length)
> {
> if (state->dst_hw_cap & DST_TYPE_HAS_SESSION) {
> hw_buffer->msg[2] = p_ca_message->msg[1]; /* MSB */
> hw_buffer->msg[3] = p_ca_message->msg[2]; /* LSB */
> }
> else {
> hw_buffer->msg[0] = (length & 0xff) + 7;
> hw_buffer->msg[1] = 0x40;
> hw_buffer->msg[2] = 0x03;
> hw_buffer->msg[3] = 0x00;
> hw_buffer->msg[4] = 0x03;
> hw_buffer->msg[5] = length & 0xff;
> hw_buffer->msg[6] = 0x00;
> }
> return 0;
> }
>
>
> static int debug_8820_buffer(struct ca_msg *hw_buffer)
> {
> unsigned int i;
>
> dprintk("%s:Debug=[", __FUNCTION__);
> for (i = 0; i < (hw_buffer->msg[0] + 1); i++)
> dprintk(" %02x", hw_buffer->msg[i]);
> dprintk("]\n");
>
> return 0;
> }
>
> static int write_to_8820(struct dst_state *state, struct ca_msg *hw_buffer, u8 length, u8 reply)
> {
> if ((dst_put_ci(state, hw_buffer->msg, length, hw_buffer->msg, reply)) < 0) {
> dprintk("%s: DST-CI Command failed.\n", __FUNCTION__);
> dprintk("%s: Resetting DST.\n", __FUNCTION__);
> rdc_reset_state(state);
> return -1;
> }
> if (verbose > 2)
> dprintk("%s: DST-CI Command succes.\n", __FUNCTION__);
>
> return 0;
> }
>
> u32 asn_1_decode(u8 *asn_1_array)
> {
> u8 length_field = 0, word_count = 0, count = 0;
> u32 length = 0;
>
> length_field = asn_1_array[0];
> dprintk("%s: Length field=[%02x]\n", __FUNCTION__, length_field);
> if (length_field < 0x80) {
> length = length_field & 0x7f;
> dprintk("%s: Length=[%02x]\n", __FUNCTION__, length);
> } else {
> word_count = length_field & 0x7f;
> for (count = 0; count < word_count; count++) {
> length = (length | asn_1_array[count + 1]) << 8;
> dprintk("%s: Length=[%04x]\n", __FUNCTION__, length);
> }
> }
> return length;
> }
>
> static int init_buffer(u8 *buffer, u32 length)
> {
> u32 i;
> for (i = 0; i < length; i++)
> buffer[i] = 0;
>
> return 0;
> }
>
> static int debug_string(u8 *msg, u32 length, u32 offset)
> {
> u32 i;
>
> dprintk(" String=[ ");
> for (i = offset; i < length; i++)
> dprintk("%02x ", msg[i]);
> dprintk("]\n");
>
> return 0;
> }
>
> static int copy_string(u8 *destination, u8 *source, u32 dest_offset, u32 source_offset, u32 length)
> {
> u32 i;
> dprintk("%s: Copying [", __FUNCTION__);
> for (i = 0; i < length; i++) {
> destination[i + dest_offset] = source[i + source_offset];
> dprintk(" %02x", source[i + source_offset]);
> }
> dprintk("]\n");
>
> return i;
> }
>
> static int debug_twinhan_ca_params(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer,
> u8 reply, u8 query, u32 length, u32 hw_offset, u32 buf_offset)
> {
> u32 count = 0;
>
> count = copy_string(hw_buffer->msg, p_ca_message->msg, hw_offset, buf_offset, length);
> dprintk("%s: Hw Buffer ", __FUNCTION__);
> hw_buffer->msg[length + hw_offset + 1] = dst_check_sum(hw_buffer->msg, (length + hw_offset));
> debug_string(hw_buffer->msg, (length + hw_offset + 1), 0);
> dprintk("%s: Reply = [%d]\n", __FUNCTION__, reply);
> hw_buffer->msg[11] = 0;
> hw_buffer->msg[12] += 1; // maybe a asic bug !
> hw_buffer->msg[23] &= 0x0f;
> hw_buffer->msg[25] = 0; // a test only
> hw_buffer->msg[28] &= 0x0f;
> hw_buffer->msg[30] = 0;
> hw_buffer->msg[length + hw_offset] = dst_check_sum(hw_buffer->msg, (length + hw_offset - 1));
> dprintk("%s: Checksum=[%02x]\n", __FUNCTION__, hw_buffer->msg[length + hw_offset + 1]);
> write_to_8820(state, hw_buffer, (length + hw_offset + 1), reply);
>
> return 0;
> }
>
> static int modify_string(u8 *message, u32 pos)
> {
> message[pos] &= 0x0f;
>
> return 0;
> }
>
> static int modify_3_bits(u8 *message, u32 pos)
> {
> message[pos] &= 0x1f;
>
> return 0;
> }
>
> static int modify_4_bits(u8 *message, u32 pos)
> {
> message[pos] &= 0x0f;
>
> return 0;
> }
>
> struct ca_descriptor {
> u8 descriptor_tag;
> u8 descriptor_length;
> u16 ca_system_id;
> u8 reserved;
> u16 ca_pid;
> u8 *p_private_data;
> };
>
> struct streams {
> u8 stream_type;
> u8 reserved;
> u16 es_pid;
> u8 reserved;
> u16 es_info_length;
> u8 ca_pmt_cmd_id;
> struct ca_descriptor *p_stream_descriptor;
> };
>
> struct en50221 {
> u32 ca_pmt_tag;
> u32 length_field;
> u8 ca_pmt_list_management;
> u16 program_number;
> u8 reserved_1;
> u8 version_number;
> u8 current_next;
> u8 reserved_2;
> u16 program_info_length;
> u8 ca_pmt_cmd_id;
> struct ca_descriptor *p_prog_descriptor;
> struct streams *p_streams;
>
> };
>
> static int parse_en50221_descriptor(struct ca_descriptor *p_descriptor, u8 *buf, u16 pos)
> {
> p_descriptor->descriptor_tag = buf[pos + 0];
> p_descriptor->descriptor_length = buf[pos + 1];
>
> }
>
> static int parse_en50021_header(struct en50221 *p_en50221, u8 *buf, u16 pos)
> {
> p_en50221->ca_pmt_tag = 0;
> p_en50221->ca_pmt_tag = (p_en50221->ca_pmt_tag | buf[pos + 0]) << 8) | buf[pos + 1]) << 8) | buf[pos + 2];
> p_en50221->length_field = asn_1_decode(&p_ca_message[pos + 3]); // should change this, length field is variable
> p_en50221->ca_pmt_list_management = [pos + 4];
> p_en50221->program_number = ((p_en50221->program_number | buf[pos + 5]) << 8) | buf[pos + 6];
> p_en50221->reserved_1 = buf[pos + 7] >> 6;
> p_en50221->version_number = (buf[pos + 7] >> 1) & 0x1f;
> p_en50221->current_next = buf[pos + 7] & 0x01;
> p_en50221->reserved_2 = buf[pos + 8] >> 4;
> p_en50221->program_info_length = ((p_en50221->program_info_length | (buf[pos + 8] & 0x0f)) << 8) | buf[pos + 9];
>
> if (p_en50221->program_info_length)
> p_en50221->ca_pmt_cmd_id = buf[pos + 10];
>
> pos += 10;
>
> return pos;
> }
>
>
>
> static int parse_en50221_message(struct en50221 *p_en50221, struct ca_msg *p_ca_message)
> {
> u16 pos = 0;
>
> pos = parse_en50221_header(p_en50221, p_ca_message->msg, pos);
>
>
> }
>
>
> static int ca_set_pmt(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer, u8 reply, u8 query)
> {
> u32 length = 0, count = 0;
> u8 asn_1_words, program_header_length;
> u16 program_info_length = 0, es_info_length = 0;
> u32 hw_offset = 0, buf_offset = 0, i;
> u8 dst_tag_length;
>
> length = asn_1_decode(&p_ca_message->msg[3]);
> dprintk("%s: CA Message length=[%d]\n", __FUNCTION__, length);
> dprintk("%s: ASN.1 ", __FUNCTION__);
> debug_string(&p_ca_message->msg[4], length, 0); // length does not include tag and length
>
> init_buffer(hw_buffer->msg, length);
> handle_dst_tag(state, p_ca_message, hw_buffer, length);
>
> hw_offset = 7;
> asn_1_words = 1; // just a hack to test, should compute this one
> buf_offset = 3;
> program_header_length = 6;
> dst_tag_length = 7;
>
> // debug_twinhan_ca_params(state, p_ca_message, hw_buffer, reply, query, length, hw_offset, buf_offset);
> // dprintk("%s: Program Header(BUF)", __FUNCTION__);
> // debug_string(&p_ca_message->msg[4], program_header_length, 0);
> // dprintk("%s: Copying Program header\n", __FUNCTION__);
> copy_string(hw_buffer->msg, p_ca_message->msg, hw_offset, (buf_offset + asn_1_words), program_header_length);
> buf_offset += program_header_length, hw_offset += program_header_length;
> modify_4_bits(hw_buffer->msg, (hw_offset - 2));
> if (state->type_flags & DST_TYPE_HAS_INC_COUNT) { // workaround
> dprintk("%s: Probably an ASIC bug !!!\n", __FUNCTION__);
> debug_string(hw_buffer->msg, (hw_offset + program_header_length), 0);
> hw_buffer->msg[hw_offset - 1] += 1;
> }
>
> // dprintk("%s: Program Header(HW), Count=[%d]", __FUNCTION__, count);
> // debug_string(hw_buffer->msg, hw_offset, 0);
>
> program_info_length = ((program_info_length | (p_ca_message->msg[buf_offset - 1] & 0x0f)) << 8) | p_ca_message->msg[buf_offset];
> dprintk("%s: Program info length=[%02x]\n", __FUNCTION__, program_info_length);
> if (program_info_length) {
>
> count = copy_string(hw_buffer->msg, p_ca_message->msg, hw_offset, (buf_offset + 1), (program_info_length + 1) ); // copy next elem, not current
> buf_offset += count, hw_offset += count;
> // dprintk("%s: Program level ", __FUNCTION__);
> // debug_string(hw_buffer->msg, hw_offset, 0);
> }
>
> buf_offset += 1;// hw_offset += 1;
> for (i = buf_offset; i < length; i++) {
> // dprintk("%s: Stream Header ", __FUNCTION__);
> count = copy_string(hw_buffer->msg, p_ca_message->msg, hw_offset, buf_offset, 5);
> modify_4_bits(hw_buffer->msg, (hw_offset + 3));
>
> hw_offset += 5, buf_offset += 5, i += 4;
> // debug_string(hw_buffer->msg, hw_offset, (hw_offset - 5));
> dprintk("%s: ES Info length bytes = [%02x %02x]\n", __FUNCTION__, p_ca_message->msg[buf_offset - 1], p_ca_message->msg[buf_offset]);
> es_info_length = 0;
> es_info_length = ((es_info_length | (p_ca_message->msg[buf_offset - 1] & 0x0f)) << 8) | p_ca_message->msg[buf_offset];
> dprintk("%s: ES info length=[%02x]\n", __FUNCTION__, es_info_length);
> if (es_info_length) {
> // copy descriptors @ STREAM level
> if (p_ca_message->msg[buf_offset + 2] == 0x09) { // Copy CA descriptor only
> copy_string(hw_buffer->msg, p_ca_message->msg, hw_offset, buf_offset, (es_info_length - 1));
> dprintk("%s: Descriptors @ STREAM level...!!! \n", __FUNCTION__);
> }
> }
>
> }
> hw_buffer->msg[length + dst_tag_length] = dst_check_sum(hw_buffer->msg, (length + dst_tag_length));
> // dprintk("%s: Total length=[%d], Checksum=[%02x]\n", __FUNCTION__, (length + dst_tag_length), hw_buffer->msg[length + dst_tag_length]);
> debug_string(hw_buffer->msg, (length + dst_tag_length + 1), 0); // dst tags also
> write_to_8820(state, hw_buffer, (length + dst_tag_length + 1), reply); // checksum
>
> return 0;
> }
>
>
> /* Board supports CA PMT reply ? */
> static int dst_check_ca_pmt(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer)
> {
> int ca_pmt_reply_test = 0;
>
> /* Do test board */
> /* Not there yet but soon */
>
>
> /* CA PMT Reply capable */
> if (ca_pmt_reply_test) {
> if ((ca_set_pmt(state, p_ca_message, hw_buffer, 1, GET_REPLY)) < 0) {
> dprintk("%s: ca_set_pmt.. failed !\n", __FUNCTION__);
> return -1;
> }
>
> /* Process CA PMT Reply */
> /* will implement soon */
> dprintk("%s: Not there yet\n", __FUNCTION__);
> }
> /* CA PMT Reply not capable */
> if (!ca_pmt_reply_test) {
> if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, NO_REPLY)) < 0) {
> dprintk("%s: ca_set_pmt.. failed !\n", __FUNCTION__);
> return -1;
> }
> if (verbose > 3)
> dprintk("%s: ca_set_pmt.. success !\n", __FUNCTION__);
> /* put a dummy message */
>
> }
> return 0;
> }
>
> static int ca_send_message(struct dst_state *state, struct ca_msg *p_ca_message, void *arg)
> {
> int i = 0;
> unsigned int ca_message_header_len;
>
> u32 command = 0;
> struct ca_msg *hw_buffer;
>
> if ((hw_buffer = (struct ca_msg *) kmalloc(sizeof (struct ca_msg), GFP_KERNEL)) == NULL) {
> dprintk("%s: Memory allocation failure\n", __FUNCTION__);
> return -ENOMEM;
> }
> if (verbose > 3)
> dprintk("%s\n", __FUNCTION__);
>
> if (copy_from_user(p_ca_message, (void *)arg, sizeof (struct ca_msg)))
> return -EFAULT;
>
> if (p_ca_message->msg) {
> ca_message_header_len = p_ca_message->length; /* Restore it back when you are done */
> /* EN50221 tag */
> command = 0;
>
> for (i = 0; i < 3; i++) {
> command = command | p_ca_message->msg[i];
> if (i < 2)
> command = command << 8;
> }
> if (verbose > 3)
> dprintk("%s:Command=[0x%x]\n", __FUNCTION__, command);
>
> switch (command) {
> case CA_PMT:
> if (verbose > 3)
> // dprintk("Command = SEND_CA_PMT\n");
> dprintk("Command = SEND_CA_PMT\n");
> // if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, 0)) < 0) {
> if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, 0)) < 0) { // code simplification started
> dprintk("%s: -->CA_PMT Failed !\n", __FUNCTION__);
> return -1;
> }
> if (verbose > 3)
> dprintk("%s: -->CA_PMT Success !\n", __FUNCTION__);
> // retval = dummy_set_pmt(state, p_ca_message, hw_buffer, 0, 0);
>
> break;
>
> case CA_PMT_REPLY:
> if (verbose > 3)
> dprintk("Command = CA_PMT_REPLY\n");
> /* Have to handle the 2 basic types of cards here */
> if ((dst_check_ca_pmt(state, p_ca_message, hw_buffer)) < 0) {
> dprintk("%s: -->CA_PMT_REPLY Failed !\n", __FUNCTION__);
> return -1;
> }
> if (verbose > 3)
> dprintk("%s: -->CA_PMT_REPLY Success !\n", __FUNCTION__);
>
> /* Certain boards do behave different ? */
> // retval = ca_set_pmt(state, p_ca_message, hw_buffer, 1, 1);
>
> case CA_APP_INFO_ENQUIRY: // only for debugging
> if (verbose > 3)
> dprintk("%s: Getting Cam Application information\n", __FUNCTION__);
>
> if ((ca_get_app_info(state)) < 0) {
> dprintk("%s: -->CA_APP_INFO_ENQUIRY Failed !\n", __FUNCTION__);
> return -1;
> }
> if (verbose > 3)
> dprintk("%s: -->CA_APP_INFO_ENQUIRY Success !\n", __FUNCTION__);
>
> break;
> }
> }
> return 0;
> }
>
> static int dst_ca_ioctl(struct inode *inode, struct file *file, unsigned int cmd, void *arg)
> {
> struct dvb_device* dvbdev = (struct dvb_device*) file->private_data;
> struct dst_state* state = (struct dst_state*) dvbdev->priv;
> struct ca_slot_info *p_ca_slot_info;
> struct ca_caps *p_ca_caps;
> struct ca_msg *p_ca_message;
>
> if ((p_ca_message = (struct ca_msg *) kmalloc(sizeof (struct ca_msg), GFP_KERNEL)) == NULL) {
> dprintk("%s: Memory allocation failure\n", __FUNCTION__);
> return -ENOMEM;
> }
>
> if ((p_ca_slot_info = (struct ca_slot_info *) kmalloc(sizeof (struct ca_slot_info), GFP_KERNEL)) == NULL) {
> dprintk("%s: Memory allocation failure\n", __FUNCTION__);
> return -ENOMEM;
> }
>
> if ((p_ca_caps = (struct ca_caps *) kmalloc(sizeof (struct ca_caps), GFP_KERNEL)) == NULL) {
> dprintk("%s: Memory allocation failure\n", __FUNCTION__);
> return -ENOMEM;
> }
>
> /* We have now only the standard ioctl's, the driver is upposed to handle internals. */
> switch (cmd) {
> case CA_SEND_MSG:
> if (verbose > 1)
> dprintk("%s: Sending message\n", __FUNCTION__);
> if ((ca_send_message(state, p_ca_message, arg)) < 0) {
> dprintk("%s: -->CA_SEND_MSG Failed !\n", __FUNCTION__);
> return -1;
> }
>
> break;
>
> case CA_GET_MSG:
> if (verbose > 1)
> dprintk("%s: Getting message\n", __FUNCTION__);
> if ((ca_get_message(state, p_ca_message, arg)) < 0) {
> dprintk("%s: -->CA_GET_MSG Failed !\n", __FUNCTION__);
> return -1;
> }
> if (verbose > 1)
> dprintk("%s: -->CA_GET_MSG Success !\n", __FUNCTION__);
>
> break;
>
> case CA_RESET:
> if (verbose > 1)
> dprintk("%s: Resetting DST\n", __FUNCTION__);
> dst_error_bailout(state);
> msleep(4000);
>
> break;
>
> case CA_GET_SLOT_INFO:
> if (verbose > 1)
> dprintk("%s: Getting Slot info\n", __FUNCTION__);
> if ((ca_get_slot_info(state, p_ca_slot_info, arg)) < 0) {
> dprintk("%s: -->CA_GET_SLOT_INFO Failed !\n", __FUNCTION__);
> return -1;
> }
> if (verbose > 1)
> dprintk("%s: -->CA_GET_SLOT_INFO Success !\n", __FUNCTION__);
>
> break;
>
> case CA_GET_CAP:
> if (verbose > 1)
> dprintk("%s: Getting Slot capabilities\n", __FUNCTION__);
> if ((ca_get_slot_caps(state, p_ca_caps, arg)) < 0) {
> dprintk("%s: -->CA_GET_CAP Failed !\n", __FUNCTION__);
> return -1;
> }
> if (verbose > 1)
> dprintk("%s: -->CA_GET_CAP Success !\n", __FUNCTION__);
>
> break;
>
> case CA_GET_DESCR_INFO:
> if (verbose > 1)
> dprintk("%s: Getting descrambler description\n", __FUNCTION__);
> if ((ca_get_slot_descr(state, p_ca_message, arg)) < 0) {
> dprintk("%s: -->CA_GET_DESCR_INFO Failed !\n", __FUNCTION__);
> return -1;
> }
> if (verbose > 1)
> dprintk("%s: -->CA_GET_DESCR_INFO Success !\n", __FUNCTION__);
>
> break;
>
> case CA_SET_DESCR:
> if (verbose > 1)
> dprintk("%s: Setting descrambler\n", __FUNCTION__);
> if ((ca_set_slot_descr()) < 0) {
> dprintk("%s: -->CA_SET_DESCR Failed !\n", __FUNCTION__);
> return -1;
> }
> if (verbose > 1)
> dprintk("%s: -->CA_SET_DESCR Success !\n", __FUNCTION__);
>
> break;
>
> case CA_SET_PID:
> if (verbose > 1)
> dprintk("%s: Setting PID\n", __FUNCTION__);
> if ((ca_set_pid()) < 0) {
> dprintk("%s: -->CA_SET_PID Failed !\n", __FUNCTION__);
> return -1;
> }
> if (verbose > 1)
> dprintk("%s: -->CA_SET_PID Success !\n", __FUNCTION__);
>
> default:
> return -EOPNOTSUPP;
> };
>
> return 0;
> }
>
> static int dst_ca_open(struct inode *inode, struct file *file)
> {
> if (verbose > 4)
> dprintk("%s:Device opened [%p]\n", __FUNCTION__, file);
> try_module_get(THIS_MODULE);
>
> return 0;
> }
>
> static int dst_ca_release(struct inode *inode, struct file *file)
> {
> if (verbose > 4)
> dprintk("%s:Device closed.\n", __FUNCTION__);
> module_put(THIS_MODULE);
>
> return 0;
> }
>
> static int dst_ca_read(struct file *file, char __user * buffer, size_t length, loff_t * offset)
> {
> int bytes_read = 0;
>
> if (verbose > 4)
> dprintk("%s:Device read.\n", __FUNCTION__);
>
> return bytes_read;
> }
>
> static int dst_ca_write(struct file *file, const char __user * buffer, size_t length, loff_t * offset)
> {
> if (verbose > 4)
> dprintk("%s:Device write.\n", __FUNCTION__);
>
> return 0;
> }
>
> static struct file_operations dst_ca_fops = {
> .owner = THIS_MODULE,
> .ioctl = (void *)dst_ca_ioctl,
> .open = dst_ca_open,
> .release = dst_ca_release,
> .read = dst_ca_read,
> .write = dst_ca_write
> };
>
> static struct dvb_device dvbdev_ca = {
> .priv = NULL,
> .users = 1,
> .readers = 1,
> .writers = 1,
> .fops = &dst_ca_fops
> };
>
> int dst_ca_attach(struct dst_state *dst, struct dvb_adapter *dvb_adapter)
> {
> struct dvb_device *dvbdev;
> if (verbose > 4)
> dprintk("%s:registering DST-CA device\n", __FUNCTION__);
> dvb_register_device(dvb_adapter, &dvbdev, &dvbdev_ca, dst, DVB_DEVICE_CA);
> return 0;
> }
>
> EXPORT_SYMBOL(dst_ca_attach);
>
> MODULE_DESCRIPTION("DST DVB-S/T/C Combo CA driver");
> MODULE_AUTHOR("Manu Abraham");
> MODULE_LICENSE("GPL");
>
>
>
