summaryrefslogtreecommitdiff
path: root/drivers/media/dvb/bt8xx/dst_ca.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/dvb/bt8xx/dst_ca.c')
-rw-r--r--drivers/media/dvb/bt8xx/dst_ca.c349
1 files changed, 126 insertions, 223 deletions
diff --git a/drivers/media/dvb/bt8xx/dst_ca.c b/drivers/media/dvb/bt8xx/dst_ca.c
index d781504cc2fa..bfaacd5fc20f 100644
--- a/drivers/media/dvb/bt8xx/dst_ca.c
+++ b/drivers/media/dvb/bt8xx/dst_ca.c
@@ -32,7 +32,7 @@
#include "dst_ca.h"
#include "dst_common.h"
-static unsigned int verbose = 1;
+static unsigned int verbose = 5;
module_param(verbose, int, 0644);
MODULE_PARM_DESC(verbose, "verbose startup messages, default is 1 (yes)");
@@ -295,34 +295,28 @@ static int ca_get_message(struct dst_state *state, struct ca_msg *p_ca_message,
return 0;
}
-static int handle_en50221_tag(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer)
+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 reply)
+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, (hw_buffer->length + 1), hw_buffer->msg, reply)) < 0) {
+ 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);
@@ -334,234 +328,141 @@ static int write_to_8820(struct dst_state *state, struct ca_msg *hw_buffer, u8 r
return 0;
}
-
-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 asn_1_decode(u8 *asn_1_array)
{
- u32 hw_offset, buf_offset, i, k;
- u32 program_info_length = 0, es_info_length = 0, length = 0, words = 0;
- u8 found_prog_ca_desc = 0, found_stream_ca_desc = 0, error_condition = 0, hw_buffer_length = 0;
-
- if (verbose > 3)
- dprintk("%s, p_ca_message length %d (0x%x)\n", __FUNCTION__,p_ca_message->length,p_ca_message->length );
-
- handle_en50221_tag(state, p_ca_message, hw_buffer); /* EN50221 tag */
-
- /* Handle the length field (variable) */
- if (!(p_ca_message->msg[3] & 0x80)) { /* Length = 1 */
- length = p_ca_message->msg[3] & 0x7f;
- words = 0; /* domi's suggestion */
- }
- else { /* Length = words */
- words = p_ca_message->msg[3] & 0x7f;
- for (i = 0; i < words; i++) {
- length = length << 8;
- length = length | p_ca_message->msg[4 + i];
+ 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);
}
}
- if (verbose > 4) {
- dprintk("%s:Length=[%d (0x%x)], Words=[%d]\n", __FUNCTION__, length,length, words);
-
- /* Debug Input string */
- for (i = 0; i < length; i++)
- dprintk(" %02x", p_ca_message->msg[i]);
- dprintk("]\n");
- }
-
- hw_offset = 7;
- buf_offset = words + 4;
-
- /* Program Header */
- if (verbose > 4)
- dprintk("\n%s:Program Header=[", __FUNCTION__);
- for (i = 0; i < 6; i++) {
- hw_buffer->msg[hw_offset] = p_ca_message->msg[buf_offset];
- if (verbose > 4)
- dprintk(" %02x", p_ca_message->msg[buf_offset]);
- hw_offset++, buf_offset++, hw_buffer_length++;
- }
- if (verbose > 4)
- dprintk("]\n");
+ return length;
+}
- program_info_length = 0;
- program_info_length = (((program_info_length | p_ca_message->msg[words + 8]) & 0x0f) << 8) | p_ca_message->msg[words + 9];
- if (verbose > 4)
- dprintk("%s:Program info Length=[%d][%02x], hw_offset=[%d], buf_offset=[%d] \n",
- __FUNCTION__, program_info_length, program_info_length, hw_offset, buf_offset);
+static int init_buffer(u8 *buffer, u32 length)
+{
+ u32 i;
+ for (i = 0; i < length; i++)
+ buffer[i] = 0;
- if (program_info_length && (program_info_length < 256)) { /* If program_info_length */
- hw_buffer->msg[11] = hw_buffer->msg[11] & 0x0f; /* req only 4 bits */
- hw_buffer->msg[12] = hw_buffer->msg[12] + 1; /* increment! ASIC bug! */
+ return 0;
+}
- if (p_ca_message->msg[buf_offset + 1] == 0x09) { /* Check CA descriptor */
- found_prog_ca_desc = 1;
- if (verbose > 4)
- dprintk("%s: Found CA descriptor @ Program level\n", __FUNCTION__);
- }
+static int debug_string(u8 *msg, u32 length, u32 offset)
+{
+ u32 i;
- if (found_prog_ca_desc) { /* Command only if CA descriptor */
- hw_buffer->msg[13] = p_ca_message->msg[buf_offset]; /* CA PMT command ID */
- hw_offset++, buf_offset++, hw_buffer_length++;
- }
+ dprintk(" String=[ ");
+ for (i = offset; i < length; i++)
+ dprintk("%02x ", msg[i]);
+ dprintk("]\n");
- /* Program descriptors */
- if (verbose > 4) {
- dprintk("%s:**********>buf_offset=[%d], hw_offset=[%d]\n", __FUNCTION__, buf_offset, hw_offset);
- dprintk("%s:Program descriptors=[", __FUNCTION__);
- }
- while (program_info_length && !error_condition) { /* Copy prog descriptors */
- if (program_info_length > p_ca_message->length) { /* Error situation */
- dprintk ("%s:\"WARNING\" Length error, line=[%d], prog_info_length=[%d]\n",
- __FUNCTION__, __LINE__, program_info_length);
- dprintk("%s:\"WARNING\" Bailing out of possible loop\n", __FUNCTION__);
- error_condition = 1;
- break;
- }
+ return 0;
+}
- hw_buffer->msg[hw_offset] = p_ca_message->msg[buf_offset];
- dprintk(" %02x", p_ca_message->msg[buf_offset]);
- hw_offset++, buf_offset++, hw_buffer_length++, program_info_length--;
- }
- if (verbose > 4) {
- dprintk("]\n");
- dprintk("%s:**********>buf_offset=[%d], hw_offset=[%d]\n", __FUNCTION__, buf_offset, hw_offset);
- }
- if (found_prog_ca_desc) {
- if (!reply) {
- hw_buffer->msg[13] = 0x01; /* OK descrambling */
- if (verbose > 1)
- dprintk("CA PMT Command = OK Descrambling\n");
- }
- else {
- hw_buffer->msg[13] = 0x02; /* Ok MMI */
- if (verbose > 1)
- dprintk("CA PMT Command = Ok MMI\n");
- }
- if (query) {
- hw_buffer->msg[13] = 0x03; /* Query */
- if (verbose > 1)
- dprintk("CA PMT Command = CA PMT query\n");
- }
- }
- }
- else {
- hw_buffer->msg[11] = hw_buffer->msg[11] & 0xf0; /* Don't write to ASIC */
- hw_buffer->msg[12] = hw_buffer->msg[12] = 0x00;
+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]);
}
- if (verbose > 4)
- dprintk("%s:**********>p_ca_message->length=[%d], buf_offset=[%d], hw_offset=[%d]\n",
- __FUNCTION__, p_ca_message->length, buf_offset, hw_offset);
-
- while ((buf_offset < p_ca_message->length) && !error_condition) {
- /* Bail out in case of an indefinite loop */
- if ((es_info_length > p_ca_message->length) || (buf_offset > p_ca_message->length)) {
- dprintk("%s:\"WARNING\" Length error, line=[%d], prog_info_length=[%d], buf_offset=[%d]\n",
- __FUNCTION__, __LINE__, program_info_length, buf_offset);
-
- dprintk("%s:\"WARNING\" Bailing out of possible loop\n", __FUNCTION__);
- error_condition = 1;
- break;
- }
-
- /* Stream Header */
-
- for (k = 0; k < 5; k++) {
- hw_buffer->msg[hw_offset + k] = p_ca_message->msg[buf_offset + k];
- }
+ dprintk("]\n");
- es_info_length = 0;
- es_info_length = (es_info_length | (p_ca_message->msg[buf_offset + 3] & 0x0f)) << 8 | p_ca_message->msg[buf_offset + 4];
+ return i;
+}
- if (verbose > 4) {
- dprintk("\n%s:----->Stream header=[%02x %02x %02x %02x %02x]\n", __FUNCTION__,
- p_ca_message->msg[buf_offset + 0], p_ca_message->msg[buf_offset + 1],
- p_ca_message->msg[buf_offset + 2], p_ca_message->msg[buf_offset + 3],
- p_ca_message->msg[buf_offset + 4]);
+static int modify_4_bits(u8 *message, u32 pos)
+{
+ message[pos] &= 0x0f;
- dprintk("%s:----->Stream type=[%02x], es length=[%d (0x%x)], Chars=[%02x] [%02x], buf_offset=[%d]\n", __FUNCTION__,
- p_ca_message->msg[buf_offset + 0], es_info_length, es_info_length,
- p_ca_message->msg[buf_offset + 3], p_ca_message->msg[buf_offset + 4], buf_offset);
- }
+ return 0;
+}
- hw_buffer->msg[hw_offset + 3] &= 0x0f; /* req only 4 bits */
- if (found_prog_ca_desc) {
- hw_buffer->msg[hw_offset + 3] = 0x00;
- hw_buffer->msg[hw_offset + 4] = 0x00;
- }
- hw_offset += 5, buf_offset += 5, hw_buffer_length += 5;
+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;
- /* Check for CA descriptor */
- if (p_ca_message->msg[buf_offset + 1] == 0x09) {
- if (verbose > 4)
- dprintk("%s:Found CA descriptor @ Stream level\n", __FUNCTION__);
- found_stream_ca_desc = 1;
- }
+ 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
- /* ES descriptors */
-
- if (es_info_length && !error_condition && !found_prog_ca_desc && found_stream_ca_desc) {
-// if (!ca_pmt_done) {
- hw_buffer->msg[hw_offset] = p_ca_message->msg[buf_offset]; /* CA PMT cmd(es) */
- if (verbose > 4)
- printk("%s:----->CA PMT Command ID=[%02x]\n", __FUNCTION__, p_ca_message->msg[buf_offset]);
-// hw_offset++, buf_offset++, hw_buffer_length++, es_info_length--, ca_pmt_done = 1;
- hw_offset++, buf_offset++, hw_buffer_length++, es_info_length--;
-// }
- if (verbose > 4)
- dprintk("%s:----->ES descriptors=[", __FUNCTION__);
-
- while (es_info_length && !error_condition) { /* ES descriptors */
- if ((es_info_length > p_ca_message->length) || (buf_offset > p_ca_message->length)) {
- if (verbose > 4) {
- dprintk("%s:\"WARNING\" ES Length error, line=[%d], es_info_length=[%d], buf_offset=[%d]\n",
- __FUNCTION__, __LINE__, es_info_length, buf_offset);
-
- dprintk("%s:\"WARNING\" Bailing out of possible loop\n", __FUNCTION__);
- }
- error_condition = 1;
- break;
- }
+ init_buffer(hw_buffer->msg, length);
+ handle_dst_tag(state, p_ca_message, hw_buffer, length);
- hw_buffer->msg[hw_offset] = p_ca_message->msg[buf_offset];
- if (verbose > 3)
- dprintk("%02x ", hw_buffer->msg[hw_offset]);
- hw_offset++, buf_offset++, hw_buffer_length++, es_info_length--;
- }
- found_stream_ca_desc = 0; /* unset for new streams */
- dprintk("]\n");
+ 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));
+ 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
+ dprintk("%s: Descriptors @ STREAM level...!!! \n", __FUNCTION__);
}
- }
-
- /* MCU Magic words */
-
- hw_buffer_length += 7;
- hw_buffer->msg[0] = hw_buffer_length;
- hw_buffer->msg[1] = 64;
- hw_buffer->msg[4] = 3;
- hw_buffer->msg[5] = hw_buffer->msg[0] - 7;
- hw_buffer->msg[6] = 0;
-
- /* Fix length */
- hw_buffer->length = hw_buffer->msg[0];
-
- put_checksum(&hw_buffer->msg[0], hw_buffer->msg[0]);
- /* Do the actual write */
- if (verbose > 4) {
- dprintk("%s:======================DEBUGGING================================\n", __FUNCTION__);
- dprintk("%s: Actual Length=[%d]\n", __FUNCTION__, hw_buffer_length);
}
- /* Only for debugging! */
- if (verbose > 2)
- debug_8820_buffer(hw_buffer);
- if (verbose > 3)
- dprintk("%s: Reply = [%d]\n", __FUNCTION__, reply);
- write_to_8820(state, hw_buffer, reply);
+ 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)
{
@@ -605,7 +506,7 @@ static int ca_send_message(struct dst_state *state, struct ca_msg *p_ca_message,
struct ca_msg *hw_buffer;
if ((hw_buffer = (struct ca_msg *) kmalloc(sizeof (struct ca_msg), GFP_KERNEL)) == NULL) {
- printk("%s: Memory allocation failure\n", __FUNCTION__);
+ dprintk("%s: Memory allocation failure\n", __FUNCTION__);
return -ENOMEM;
}
if (verbose > 3)
@@ -630,8 +531,10 @@ static int ca_send_message(struct dst_state *state, struct ca_msg *p_ca_message,
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) {
+ 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;
}
@@ -664,7 +567,7 @@ static int ca_send_message(struct dst_state *state, struct ca_msg *p_ca_message,
return -1;
}
if (verbose > 3)
- printk("%s: -->CA_APP_INFO_ENQUIRY Success !\n", __FUNCTION__);
+ dprintk("%s: -->CA_APP_INFO_ENQUIRY Success !\n", __FUNCTION__);
break;
}
@@ -681,17 +584,17 @@ static int dst_ca_ioctl(struct inode *inode, struct file *file, unsigned int cmd
struct ca_msg *p_ca_message;
if ((p_ca_message = (struct ca_msg *) kmalloc(sizeof (struct ca_msg), GFP_KERNEL)) == NULL) {
- printk("%s: Memory allocation failure\n", __FUNCTION__);
+ 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) {
- printk("%s: Memory allocation failure\n", __FUNCTION__);
+ dprintk("%s: Memory allocation failure\n", __FUNCTION__);
return -ENOMEM;
}
if ((p_ca_caps = (struct ca_caps *) kmalloc(sizeof (struct ca_caps), GFP_KERNEL)) == NULL) {
- printk("%s: Memory allocation failure\n", __FUNCTION__);
+ dprintk("%s: Memory allocation failure\n", __FUNCTION__);
return -ENOMEM;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-20 16:53:38 +0300