lkml.org 
[lkml]   [2005]   [May]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[DVB patch 07/11] flexcop: use hw pid filter
- enabled the HW PID by default for the PCI cards
- correct the TS demux parsing when PID filter is enabled (and thus the timer IRQ)
- rewrote the PID-filter and FULLTS control part in flexcop-hw-filter
(thanks to Krzysztof Matula for pointing that out)

Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
---

drivers/media/dvb/b2c2/flexcop-common.h | 2
drivers/media/dvb/b2c2/flexcop-hw-filter.c | 73 +++++++++++++++--------------
drivers/media/dvb/b2c2/flexcop-pci.c | 28 ++++++-----
3 files changed, 56 insertions(+), 47 deletions(-)

Index: linux-2.6.12-rc4/drivers/media/dvb/b2c2/flexcop-hw-filter.c
===================================================================
--- linux-2.6.12-rc4.orig/drivers/media/dvb/b2c2/flexcop-hw-filter.c 2005-05-12 01:30:16.000000000 +0200
+++ linux-2.6.12-rc4/drivers/media/dvb/b2c2/flexcop-hw-filter.c 2005-05-12 01:30:45.000000000 +0200
@@ -104,6 +104,9 @@ static void flexcop_pid_ECM_PID_ctrl(str

static void flexcop_pid_control(struct flexcop_device *fc, int index, u16 pid,int onoff)
{
+ if (pid == 0x2000)
+ return;
+
deb_ts("setting pid: %5d %04x at index %d '%s'\n",pid,pid,index,onoff ? "on" : "off");

/* We could use bit magic here to reduce source code size.
@@ -133,50 +136,50 @@ static void flexcop_pid_control(struct f
}
}

+static int flexcop_toggle_fullts_streaming(struct flexcop_device *fc,int onoff)
+{
+ if (fc->fullts_streaming_state != onoff) {
+ deb_ts("%s full TS transfer\n",onoff ? "enabling" : "disabling");
+ flexcop_pid_group_filter(fc, 0, 0x1fe0 * (!onoff));
+ flexcop_pid_group_filter_ctrl(fc,onoff);
+ fc->fullts_streaming_state = onoff;
+ }
+ return 0;
+}
+
int flexcop_pid_feed_control(struct flexcop_device *fc, struct dvb_demux_feed *dvbdmxfeed, int onoff)
{
int max_pid_filter = 6 + fc->has_32_hw_pid_filter*32;

- fc->feedcount += (onoff ? 1 : -1);
+ fc->feedcount += onoff ? 1 : -1;
+ if (dvbdmxfeed->index >= max_pid_filter)
+ fc->extra_feedcount += onoff ? 1 : -1;
+
+ /* toggle complete-TS-streaming when:
+ * - pid_filtering is not enabled and it is the first or last feed requested
+ * - pid_filtering is enabled,
+ * - but the number of requested feeds is exceeded
+ * - or the requested pid is 0x2000 */

- /* when doing hw pid filtering, set the pid */
- if (fc->pid_filtering)
- flexcop_pid_control(fc,dvbdmxfeed->index,dvbdmxfeed->pid,onoff);
+ if (!fc->pid_filtering && fc->feedcount == onoff)
+ flexcop_toggle_fullts_streaming(fc,onoff);

- /* if it was the first feed request */
- if (fc->feedcount == onoff && onoff) {
- if (!fc->pid_filtering) {
- deb_ts("enabling full TS transfer\n");
- flexcop_pid_group_filter(fc, 0,0);
- flexcop_pid_group_filter_ctrl(fc,1);
- }
-
- if (fc->stream_control)
- fc->stream_control(fc,1);
- flexcop_rcv_data_ctrl(fc,1);
-
- /* if there is no more feed left to feed */
- } else if (fc->feedcount == onoff && !onoff) {
- if (!fc->pid_filtering) {
- deb_ts("disabling full TS transfer\n");
- flexcop_pid_group_filter(fc, 0, 0x1fe0);
- flexcop_pid_group_filter_ctrl(fc,0);
- }
+ if (fc->pid_filtering) {
+ flexcop_pid_control(fc,dvbdmxfeed->index,dvbdmxfeed->pid,onoff);

- flexcop_rcv_data_ctrl(fc,0);
- if (fc->stream_control)
- fc->stream_control(fc,0);
+ if (fc->extra_feedcount > 0)
+ flexcop_toggle_fullts_streaming(fc,1);
+ else if (dvbdmxfeed->pid == 0x2000)
+ flexcop_toggle_fullts_streaming(fc,onoff);
+ else
+ flexcop_toggle_fullts_streaming(fc,0);
}

- /* if pid_filtering is on and more pids than the hw-filter can provide are
- * requested enable the whole bandwidth.
- */
- if (fc->pid_filtering && fc->feedcount > max_pid_filter) {
- flexcop_pid_group_filter(fc, 0,0);
- flexcop_pid_group_filter_ctrl(fc,1);
- } else if (fc->pid_filtering && fc->feedcount <= max_pid_filter) {
- flexcop_pid_group_filter(fc, 0,0x1fe0);
- flexcop_pid_group_filter_ctrl(fc,0);
+ /* if it was the first or last feed request change the stream-status */
+ if (fc->feedcount == onoff) {
+ flexcop_rcv_data_ctrl(fc,onoff);
+ if (fc->stream_control)
+ fc->stream_control(fc,onoff);
}

return 0;
Index: linux-2.6.12-rc4/drivers/media/dvb/b2c2/flexcop-pci.c
===================================================================
--- linux-2.6.12-rc4.orig/drivers/media/dvb/b2c2/flexcop-pci.c 2005-05-12 01:30:40.000000000 +0200
+++ linux-2.6.12-rc4/drivers/media/dvb/b2c2/flexcop-pci.c 2005-05-12 01:30:45.000000000 +0200
@@ -9,7 +9,7 @@
#define FC_LOG_PREFIX "flexcop-pci"
#include "flexcop-common.h"

-static int enable_pid_filtering = 0;
+static int enable_pid_filtering = 1;
module_param(enable_pid_filtering, int, 0444);
MODULE_PARM_DESC(enable_pid_filtering, "enable hardware pid filtering: supported values: 0 (fullts), 1");

@@ -45,13 +45,14 @@ struct flexcop_pci {
void __iomem *io_mem;
u32 irq;
/* buffersize (at least for DMA1, need to be % 188 == 0,
- * this is logic is required */
+ * this logic is required */
#define FC_DEFAULT_DMA1_BUFSIZE (1280 * 188)
#define FC_DEFAULT_DMA2_BUFSIZE (10 * 188)
struct flexcop_dma dma[2];

int active_dma1_addr; /* 0 = addr0 of dma1; 1 = addr1 of dma1 */
u32 last_dma1_cur_pos; /* position of the pointer last time the timer/packet irq occured */
+ int count;

spinlock_t irq_lock;

@@ -99,15 +100,6 @@ static irqreturn_t flexcop_pci_irq(int i

spin_lock_irq(&fc_pci->irq_lock);

- deb_irq("irq: %08x cur_addr: %08x (%d), our addrs. 1: %08x 2: %08x; 0x000: "
- "%08x, 0x00c: %08x\n",v.raw,
- fc->read_ibi_reg(fc,dma1_008).dma_0x8.dma_cur_addr << 2,
- fc_pci->active_dma1_addr,
- fc_pci->dma[0].dma_addr0,fc_pci->dma[0].dma_addr1,
- fc->read_ibi_reg(fc,dma1_000).raw,
- fc->read_ibi_reg(fc,dma1_00c).raw);
-
-
if (v.irq_20c.DMA1_IRQ_Status == 1) {
if (fc_pci->active_dma1_addr == 0)
flexcop_pass_dmx_packets(fc_pci->fc_dev,fc_pci->dma[0].cpu_addr0,fc_pci->dma[0].size / 188);
@@ -123,21 +115,28 @@ static irqreturn_t flexcop_pci_irq(int i
fc->read_ibi_reg(fc,dma1_008).dma_0x8.dma_cur_addr << 2;
u32 cur_pos = cur_addr - fc_pci->dma[0].dma_addr0;

+ deb_irq("irq: %08x cur_addr: %08x: cur_pos: %08x, last_cur_pos: %08x ",
+ v.raw,cur_addr,cur_pos,fc_pci->last_dma1_cur_pos);
+
/* buffer end was reached, restarted from the beginning
* pass the data from last_cur_pos to the buffer end to the demux
*/
if (cur_pos < fc_pci->last_dma1_cur_pos) {
+ deb_irq(" end was reached: passing %d bytes ",(fc_pci->dma[0].size*2 - 1) - fc_pci->last_dma1_cur_pos);
flexcop_pass_dmx_data(fc_pci->fc_dev,
fc_pci->dma[0].cpu_addr0 + fc_pci->last_dma1_cur_pos,
- (fc_pci->dma[0].size*2 - 1) - fc_pci->last_dma1_cur_pos);
+ (fc_pci->dma[0].size*2) - fc_pci->last_dma1_cur_pos);
fc_pci->last_dma1_cur_pos = 0;
+ fc_pci->count = 0;
}

if (cur_pos > fc_pci->last_dma1_cur_pos) {
+ deb_irq(" passing %d bytes ",cur_pos - fc_pci->last_dma1_cur_pos);
flexcop_pass_dmx_data(fc_pci->fc_dev,
fc_pci->dma[0].cpu_addr0 + fc_pci->last_dma1_cur_pos,
cur_pos - fc_pci->last_dma1_cur_pos);
}
+ deb_irq("\n");

fc_pci->last_dma1_cur_pos = cur_pos;
} else
@@ -301,6 +300,11 @@ static int flexcop_pci_probe(struct pci_

fc->stream_control = flexcop_pci_stream_control;

+ if (enable_pid_filtering)
+ info("will use the HW PID filter.");
+ else
+ info("will pass the complete TS to the demuxer.");
+
fc->pid_filtering = enable_pid_filtering;
fc->bus_type = FC_PCI;

Index: linux-2.6.12-rc4/drivers/media/dvb/b2c2/flexcop-common.h
===================================================================
--- linux-2.6.12-rc4.orig/drivers/media/dvb/b2c2/flexcop-common.h 2005-05-12 01:30:26.000000000 +0200
+++ linux-2.6.12-rc4/drivers/media/dvb/b2c2/flexcop-common.h 2005-05-12 01:30:45.000000000 +0200
@@ -76,8 +76,10 @@ struct flexcop_device {
struct semaphore i2c_sem;

/* options and status */
+ int extra_feedcount;
int feedcount;
int pid_filtering;
+ int fullts_streaming_state;

/* bus specific callbacks */
flexcop_ibi_value (*read_ibi_reg) (struct flexcop_device *, flexcop_ibi_register);
--

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-05-14 00:31    [W:0.062 / U:7.824 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site