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path: root/drivers/media/dvb/firewire/firedtv-avc.c
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Diffstat (limited to 'drivers/media/dvb/firewire/firedtv-avc.c')
-rw-r--r--drivers/media/dvb/firewire/firedtv-avc.c92
1 files changed, 50 insertions, 42 deletions
diff --git a/drivers/media/dvb/firewire/firedtv-avc.c b/drivers/media/dvb/firewire/firedtv-avc.c
index d1b67fe0f011..50c42a4b972b 100644
--- a/drivers/media/dvb/firewire/firedtv-avc.c
+++ b/drivers/media/dvb/firewire/firedtv-avc.c
@@ -1050,28 +1050,28 @@ int avc_ca_pmt(struct firedtv *fdtv, char *msg, int length)
c->operand[4] = 0; /* slot */
c->operand[5] = SFE_VENDOR_TAG_CA_PMT; /* ca tag */
c->operand[6] = 0; /* more/last */
- /* c->operand[7] = XXXprogram_info_length + 17; */ /* length */
- c->operand[8] = list_management;
- c->operand[9] = 0x01; /* pmt_cmd=OK_descramble */
+ /* Use three bytes for length field in case length > 127 */
+ c->operand[10] = list_management;
+ c->operand[11] = 0x01; /* pmt_cmd=OK_descramble */
/* TS program map table */
- c->operand[10] = 0x02; /* Table id=2 */
- c->operand[11] = 0x80; /* Section syntax + length */
- /* c->operand[12] = XXXprogram_info_length + 12; */
- c->operand[13] = msg[1]; /* Program number */
- c->operand[14] = msg[2];
- c->operand[15] = 0x01; /* Version number=0 + current/next=1 */
- c->operand[16] = 0x00; /* Section number=0 */
- c->operand[17] = 0x00; /* Last section number=0 */
- c->operand[18] = 0x1f; /* PCR_PID=1FFF */
- c->operand[19] = 0xff;
- c->operand[20] = (program_info_length >> 8); /* Program info length */
- c->operand[21] = (program_info_length & 0xff);
+ c->operand[12] = 0x02; /* Table id=2 */
+ c->operand[13] = 0x80; /* Section syntax + length */
+ /* c->operand[14] = XXXprogram_info_length + 12; */
+ c->operand[15] = msg[1]; /* Program number */
+ c->operand[16] = msg[2];
+ c->operand[17] = 0x01; /* Version number=0 + current/next=1 */
+ c->operand[18] = 0x00; /* Section number=0 */
+ c->operand[19] = 0x00; /* Last section number=0 */
+ c->operand[20] = 0x1f; /* PCR_PID=1FFF */
+ c->operand[21] = 0xff;
+ c->operand[22] = (program_info_length >> 8); /* Program info length */
+ c->operand[23] = (program_info_length & 0xff);
/* CA descriptors at programme level */
read_pos = 6;
- write_pos = 22;
+ write_pos = 24;
if (program_info_length > 0) {
pmt_cmd_id = msg[read_pos++];
if (pmt_cmd_id != 1 && pmt_cmd_id != 4)
@@ -1113,8 +1113,10 @@ int avc_ca_pmt(struct firedtv *fdtv, char *msg, int length)
c->operand[write_pos++] = 0x00;
c->operand[write_pos++] = 0x00;
- c->operand[7] = write_pos - 8;
- c->operand[12] = write_pos - 13;
+ c->operand[7] = 0x82;
+ c->operand[8] = (write_pos - 10) >> 8;
+ c->operand[9] = (write_pos - 10) & 0xff;
+ c->operand[14] = write_pos - 15;
crc32_csum = crc32_be(0, &c->operand[10], c->operand[12] - 1);
c->operand[write_pos - 4] = (crc32_csum >> 24) & 0xff;
@@ -1234,14 +1236,14 @@ int avc_ca_get_mmi(struct firedtv *fdtv, char *mmi_object, unsigned int *len)
#define CMP_OUTPUT_PLUG_CONTROL_REG_0 0xfffff0000904ULL
-static int cmp_read(struct firedtv *fdtv, void *buf, u64 addr, size_t len)
+static int cmp_read(struct firedtv *fdtv, u64 addr, __be32 *data)
{
int ret;
if (mutex_lock_interruptible(&fdtv->avc_mutex))
return -EINTR;
- ret = fdtv->backend->read(fdtv, addr, buf, len);
+ ret = fdtv->backend->read(fdtv, addr, data);
if (ret < 0)
dev_err(fdtv->device, "CMP: read I/O error\n");
@@ -1249,14 +1251,14 @@ static int cmp_read(struct firedtv *fdtv, void *buf, u64 addr, size_t len)
return ret;
}
-static int cmp_lock(struct firedtv *fdtv, void *data, u64 addr, __be32 arg)
+static int cmp_lock(struct firedtv *fdtv, u64 addr, __be32 data[])
{
int ret;
if (mutex_lock_interruptible(&fdtv->avc_mutex))
return -EINTR;
- ret = fdtv->backend->lock(fdtv, addr, data, arg);
+ ret = fdtv->backend->lock(fdtv, addr, data);
if (ret < 0)
dev_err(fdtv->device, "CMP: lock I/O error\n");
@@ -1286,25 +1288,25 @@ static inline void set_opcr(__be32 *opcr, u32 value, u32 mask, u32 shift)
int cmp_establish_pp_connection(struct firedtv *fdtv, int plug, int channel)
{
- __be32 old_opcr, opcr;
+ __be32 old_opcr, opcr[2];
u64 opcr_address = CMP_OUTPUT_PLUG_CONTROL_REG_0 + (plug << 2);
int attempts = 0;
int ret;
- ret = cmp_read(fdtv, &opcr, opcr_address, 4);
+ ret = cmp_read(fdtv, opcr_address, opcr);
if (ret < 0)
return ret;
repeat:
- if (!get_opcr_online(opcr)) {
+ if (!get_opcr_online(*opcr)) {
dev_err(fdtv->device, "CMP: output offline\n");
return -EBUSY;
}
- old_opcr = opcr;
+ old_opcr = *opcr;
- if (get_opcr_p2p_connections(opcr)) {
- if (get_opcr_channel(opcr) != channel) {
+ if (get_opcr_p2p_connections(*opcr)) {
+ if (get_opcr_channel(*opcr) != channel) {
dev_err(fdtv->device, "CMP: cannot change channel\n");
return -EBUSY;
}
@@ -1312,11 +1314,11 @@ repeat:
/* We don't allocate isochronous resources. */
} else {
- set_opcr_channel(&opcr, channel);
- set_opcr_data_rate(&opcr, 2); /* S400 */
+ set_opcr_channel(opcr, channel);
+ set_opcr_data_rate(opcr, 2); /* S400 */
/* FIXME: this is for the worst case - optimize */
- set_opcr_overhead_id(&opcr, 0);
+ set_opcr_overhead_id(opcr, 0);
/*
* FIXME: allocate isochronous channel and bandwidth at IRM
@@ -1324,13 +1326,16 @@ repeat:
*/
}
- set_opcr_p2p_connections(&opcr, get_opcr_p2p_connections(opcr) + 1);
+ set_opcr_p2p_connections(opcr, get_opcr_p2p_connections(*opcr) + 1);
- ret = cmp_lock(fdtv, &opcr, opcr_address, old_opcr);
+ opcr[1] = *opcr;
+ opcr[0] = old_opcr;
+
+ ret = cmp_lock(fdtv, opcr_address, opcr);
if (ret < 0)
return ret;
- if (old_opcr != opcr) {
+ if (old_opcr != *opcr) {
/*
* FIXME: if old_opcr.P2P_Connections > 0,
* deallocate isochronous channel and bandwidth at IRM
@@ -1348,27 +1353,30 @@ repeat:
void cmp_break_pp_connection(struct firedtv *fdtv, int plug, int channel)
{
- __be32 old_opcr, opcr;
+ __be32 old_opcr, opcr[2];
u64 opcr_address = CMP_OUTPUT_PLUG_CONTROL_REG_0 + (plug << 2);
int attempts = 0;
- if (cmp_read(fdtv, &opcr, opcr_address, 4) < 0)
+ if (cmp_read(fdtv, opcr_address, opcr) < 0)
return;
repeat:
- if (!get_opcr_online(opcr) || !get_opcr_p2p_connections(opcr) ||
- get_opcr_channel(opcr) != channel) {
+ if (!get_opcr_online(*opcr) || !get_opcr_p2p_connections(*opcr) ||
+ get_opcr_channel(*opcr) != channel) {
dev_err(fdtv->device, "CMP: no connection to break\n");
return;
}
- old_opcr = opcr;
- set_opcr_p2p_connections(&opcr, get_opcr_p2p_connections(opcr) - 1);
+ old_opcr = *opcr;
+ set_opcr_p2p_connections(opcr, get_opcr_p2p_connections(*opcr) - 1);
+
+ opcr[1] = *opcr;
+ opcr[0] = old_opcr;
- if (cmp_lock(fdtv, &opcr, opcr_address, old_opcr) < 0)
+ if (cmp_lock(fdtv, opcr_address, opcr) < 0)
return;
- if (old_opcr != opcr) {
+ if (old_opcr != *opcr) {
/*
* FIXME: if old_opcr.P2P_Connections == 1, i.e. we were last
* owner, deallocate isochronous channel and bandwidth at IRM
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.