blob: a9d7795a8e143563ed155c109d474d725671012e [file] [log] [blame]
/*
*
* Support for the mpeg transport stream transfers
* PCI function #2 of the cx2388x.
*
* (c) 2004 Jelle Foks <jelle@foks.8m.com>
* (c) 2004 Chris Pascoe <c.pascoe@itee.uq.edu.au>
* (c) 2004 Gerd Knorr <kraxel@bytesex.org>
*
* 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/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <asm/delay.h>
#include "cx88.h"
/* ------------------------------------------------------------------ */
MODULE_DESCRIPTION("mpeg driver for cx2388x based TV cards");
MODULE_AUTHOR("Jelle Foks <jelle@foks.8m.com>");
MODULE_AUTHOR("Chris Pascoe <c.pascoe@itee.uq.edu.au>");
MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
MODULE_LICENSE("GPL");
static unsigned int debug = 0;
module_param(debug,int,0644);
MODULE_PARM_DESC(debug,"enable debug messages [mpeg]");
#define dprintk(level,fmt, arg...) if (debug >= level) \
printk(KERN_DEBUG "%s/2: " fmt, dev->core->name , ## arg)
/* ------------------------------------------------------------------ */
static int cx8802_start_dma(struct cx8802_dev *dev,
struct cx88_dmaqueue *q,
struct cx88_buffer *buf)
{
struct cx88_core *core = dev->core;
dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n", dev->width, dev->height, buf->vb.field);
/* setup fifo + format */
cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
dev->ts_packet_size, buf->risc.dma);
/* write TS length to chip */
cx_write(MO_TS_LNGTH, buf->vb.width);
/* FIXME: this needs a review.
* also: move to cx88-blackbird + cx88-dvb source files? */
if (cx88_boards[core->board].dvb) {
/* negedge driven & software reset */
cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
udelay(100);
cx_write(MO_PINMUX_IO, 0x00);
cx_write(TS_HW_SOP_CNTRL,0x47<<16|188<<4|0x01);
switch (core->board) {
case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
case CX88_BOARD_PCHDTV_HD5500:
cx_write(TS_SOP_STAT, 1<<13);
break;
case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
udelay(100);
break;
default:
cx_write(TS_SOP_STAT, 0x00);
break;
}
cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
udelay(100);
}
if (cx88_boards[core->board].blackbird) {
cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
udelay(100);
cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
cx_write(TS_VALERR_CNTRL, 0x2000);
cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
udelay(100);
}
/* reset counter */
cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
q->count = 1;
/* enable irqs */
dprintk( 1, "setting the interrupt mask\n" );
cx_set(MO_PCI_INTMSK, core->pci_irqmask | 0x04);
cx_set(MO_TS_INTMSK, 0x1f0011);
/* start dma */
cx_set(MO_DEV_CNTRL2, (1<<5));
cx_set(MO_TS_DMACNTRL, 0x11);
return 0;
}
static int cx8802_stop_dma(struct cx8802_dev *dev)
{
struct cx88_core *core = dev->core;
dprintk( 1, "cx8802_stop_dma\n" );
/* stop dma */
cx_clear(MO_TS_DMACNTRL, 0x11);
/* disable irqs */
cx_clear(MO_PCI_INTMSK, 0x000004);
cx_clear(MO_TS_INTMSK, 0x1f0011);
/* Reset the controller */
cx_write(TS_GEN_CNTRL, 0xcd);
return 0;
}
static int cx8802_restart_queue(struct cx8802_dev *dev,
struct cx88_dmaqueue *q)
{
struct cx88_buffer *buf;
struct list_head *item;
dprintk( 1, "cx8802_restart_queue\n" );
if (list_empty(&q->active))
{
struct cx88_buffer *prev;
prev = NULL;
dprintk(1, "cx8802_restart_queue: queue is empty\n" );
for (;;) {
if (list_empty(&q->queued))
return 0;
buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
if (NULL == prev) {
list_del(&buf->vb.queue);
list_add_tail(&buf->vb.queue,&q->active);
cx8802_start_dma(dev, q, buf);
buf->vb.state = STATE_ACTIVE;
buf->count = q->count++;
mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
dprintk(1,"[%p/%d] restart_queue - first active\n",
buf,buf->vb.i);
} else if (prev->vb.width == buf->vb.width &&
prev->vb.height == buf->vb.height &&
prev->fmt == buf->fmt) {
list_del(&buf->vb.queue);
list_add_tail(&buf->vb.queue,&q->active);
buf->vb.state = STATE_ACTIVE;
buf->count = q->count++;
prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
dprintk(1,"[%p/%d] restart_queue - move to active\n",
buf,buf->vb.i);
} else {
return 0;
}
prev = buf;
}
return 0;
}
buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
dprintk(2,"restart_queue [%p/%d]: restart dma\n",
buf, buf->vb.i);
cx8802_start_dma(dev, q, buf);
list_for_each(item,&q->active) {
buf = list_entry(item, struct cx88_buffer, vb.queue);
buf->count = q->count++;
}
mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
return 0;
}
/* ------------------------------------------------------------------ */
int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
struct cx88_buffer *buf, enum v4l2_field field)
{
int size = dev->ts_packet_size * dev->ts_packet_count;
int rc;
dprintk(1, "%s: %p\n", __FUNCTION__, buf);
if (0 != buf->vb.baddr && buf->vb.bsize < size)
return -EINVAL;
if (STATE_NEEDS_INIT == buf->vb.state) {
buf->vb.width = dev->ts_packet_size;
buf->vb.height = dev->ts_packet_count;
buf->vb.size = size;
buf->vb.field = field /*V4L2_FIELD_TOP*/;
if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
goto fail;
cx88_risc_databuffer(dev->pci, &buf->risc,
buf->vb.dma.sglist,
buf->vb.width, buf->vb.height);
}
buf->vb.state = STATE_PREPARED;
return 0;
fail:
cx88_free_buffer(q,buf);
return rc;
}
void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
{
struct cx88_buffer *prev;
struct cx88_dmaqueue *cx88q = &dev->mpegq;
dprintk( 1, "cx8802_buf_queue\n" );
/* add jump to stopper */
buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
if (list_empty(&cx88q->active)) {
dprintk( 1, "queue is empty - first active\n" );
list_add_tail(&buf->vb.queue,&cx88q->active);
cx8802_start_dma(dev, cx88q, buf);
buf->vb.state = STATE_ACTIVE;
buf->count = cx88q->count++;
mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
dprintk(1,"[%p/%d] %s - first active\n",
buf, buf->vb.i, __FUNCTION__);
} else {
dprintk( 1, "queue is not empty - append to active\n" );
prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
list_add_tail(&buf->vb.queue,&cx88q->active);
buf->vb.state = STATE_ACTIVE;
buf->count = cx88q->count++;
prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
dprintk( 1, "[%p/%d] %s - append to active\n",
buf, buf->vb.i, __FUNCTION__);
}
}
/* ----------------------------------------------------------- */
static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
{
struct cx88_dmaqueue *q = &dev->mpegq;
struct cx88_buffer *buf;
unsigned long flags;
spin_lock_irqsave(&dev->slock,flags);
while (!list_empty(&q->active)) {
buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
list_del(&buf->vb.queue);
buf->vb.state = STATE_ERROR;
wake_up(&buf->vb.done);
dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
}
if (restart)
{
dprintk(1, "restarting queue\n" );
cx8802_restart_queue(dev,q);
}
spin_unlock_irqrestore(&dev->slock,flags);
}
void cx8802_cancel_buffers(struct cx8802_dev *dev)
{
struct cx88_dmaqueue *q = &dev->mpegq;
dprintk( 1, "cx8802_cancel_buffers" );
del_timer_sync(&q->timeout);
cx8802_stop_dma(dev);
do_cancel_buffers(dev,"cancel",0);
}
static void cx8802_timeout(unsigned long data)
{
struct cx8802_dev *dev = (struct cx8802_dev*)data;
dprintk(0, "%s\n",__FUNCTION__);
if (debug)
cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
cx8802_stop_dma(dev);
do_cancel_buffers(dev,"timeout",1);
}
static char *cx88_mpeg_irqs[32] = {
"ts_risci1", NULL, NULL, NULL,
"ts_risci2", NULL, NULL, NULL,
"ts_oflow", NULL, NULL, NULL,
"ts_sync", NULL, NULL, NULL,
"opc_err", "par_err", "rip_err", "pci_abort",
"ts_err?",
};
static void cx8802_mpeg_irq(struct cx8802_dev *dev)
{
struct cx88_core *core = dev->core;
u32 status, mask, count;
dprintk( 1, "cx8802_mpeg_irq\n" );
status = cx_read(MO_TS_INTSTAT);
mask = cx_read(MO_TS_INTMSK);
if (0 == (status & mask))
return;
cx_write(MO_TS_INTSTAT, status);
if (debug || (status & mask & ~0xff))
cx88_print_irqbits(core->name, "irq mpeg ",
cx88_mpeg_irqs, status, mask);
/* risc op code error */
if (status & (1 << 16)) {
printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
cx_clear(MO_TS_DMACNTRL, 0x11);
cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
}
/* risc1 y */
if (status & 0x01) {
dprintk( 1, "wake up\n" );
spin_lock(&dev->slock);
count = cx_read(MO_TS_GPCNT);
cx88_wakeup(dev->core, &dev->mpegq, count);
spin_unlock(&dev->slock);
}
/* risc2 y */
if (status & 0x10) {
spin_lock(&dev->slock);
cx8802_restart_queue(dev,&dev->mpegq);
spin_unlock(&dev->slock);
}
/* other general errors */
if (status & 0x1f0100) {
dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
spin_lock(&dev->slock);
cx8802_stop_dma(dev);
cx8802_restart_queue(dev,&dev->mpegq);
spin_unlock(&dev->slock);
}
}
#define MAX_IRQ_LOOP 10
static irqreturn_t cx8802_irq(int irq, void *dev_id, struct pt_regs *regs)
{
struct cx8802_dev *dev = dev_id;
struct cx88_core *core = dev->core;
u32 status;
int loop, handled = 0;
for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | 0x04);
if (0 == status)
goto out;
dprintk( 1, "cx8802_irq\n" );
dprintk( 1, " loop: %d/%d\n", loop, MAX_IRQ_LOOP );
dprintk( 1, " status: %d\n", status );
handled = 1;
cx_write(MO_PCI_INTSTAT, status);
if (status & core->pci_irqmask)
cx88_core_irq(core,status);
if (status & 0x04)
cx8802_mpeg_irq(dev);
};
if (MAX_IRQ_LOOP == loop) {
dprintk( 0, "clearing mask\n" );
printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
core->name);
cx_write(MO_PCI_INTMSK,0);
}
out:
return IRQ_RETVAL(handled);
}
/* ----------------------------------------------------------- */
/* exported stuff */
int cx8802_init_common(struct cx8802_dev *dev)
{
struct cx88_core *core = dev->core;
int err;
/* pci init */
if (pci_enable_device(dev->pci))
return -EIO;
pci_set_master(dev->pci);
if (!pci_dma_supported(dev->pci,0xffffffff)) {
printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
return -EIO;
}
pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER, &dev->pci_lat);
printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
"latency: %d, mmio: 0x%lx\n", dev->core->name,
pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
dev->pci_lat,pci_resource_start(dev->pci,0));
/* initialize driver struct */
spin_lock_init(&dev->slock);
/* init dma queue */
INIT_LIST_HEAD(&dev->mpegq.active);
INIT_LIST_HEAD(&dev->mpegq.queued);
dev->mpegq.timeout.function = cx8802_timeout;
dev->mpegq.timeout.data = (unsigned long)dev;
init_timer(&dev->mpegq.timeout);
cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
MO_TS_DMACNTRL,0x11,0x00);
/* get irq */
err = request_irq(dev->pci->irq, cx8802_irq,
SA_SHIRQ | SA_INTERRUPT, dev->core->name, dev);
if (err < 0) {
printk(KERN_ERR "%s: can't get IRQ %d\n",
dev->core->name, dev->pci->irq);
return err;
}
cx_set(MO_PCI_INTMSK, core->pci_irqmask);
/* everything worked */
pci_set_drvdata(dev->pci,dev);
return 0;
}
void cx8802_fini_common(struct cx8802_dev *dev)
{
dprintk( 2, "cx8802_fini_common\n" );
cx8802_stop_dma(dev);
pci_disable_device(dev->pci);
/* unregister stuff */
free_irq(dev->pci->irq, dev);
pci_set_drvdata(dev->pci, NULL);
/* free memory */
btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
}
/* ----------------------------------------------------------- */
int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
{
struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
struct cx88_core *core = dev->core;
/* stop mpeg dma */
spin_lock(&dev->slock);
if (!list_empty(&dev->mpegq.active)) {
dprintk( 2, "suspend\n" );
printk("%s: suspend mpeg\n", core->name);
cx8802_stop_dma(dev);
del_timer(&dev->mpegq.timeout);
}
spin_unlock(&dev->slock);
/* FIXME -- shutdown device */
cx88_shutdown(dev->core);
pci_save_state(pci_dev);
if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
pci_disable_device(pci_dev);
dev->state.disabled = 1;
}
return 0;
}
int cx8802_resume_common(struct pci_dev *pci_dev)
{
struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
struct cx88_core *core = dev->core;
int err;
if (dev->state.disabled) {
err=pci_enable_device(pci_dev);
if (err) {
printk(KERN_ERR "%s: can't enable device\n",
dev->core->name);
return err;
}
dev->state.disabled = 0;
}
err=pci_set_power_state(pci_dev, PCI_D0);
if (err) {
printk(KERN_ERR "%s: can't enable device\n",
dev->core->name);
pci_disable_device(pci_dev);
dev->state.disabled = 1;
return err;
}
pci_restore_state(pci_dev);
/* FIXME: re-initialize hardware */
cx88_reset(dev->core);
/* restart video+vbi capture */
spin_lock(&dev->slock);
if (!list_empty(&dev->mpegq.active)) {
printk("%s: resume mpeg\n", core->name);
cx8802_restart_queue(dev,&dev->mpegq);
}
spin_unlock(&dev->slock);
return 0;
}
/* ----------------------------------------------------------- */
EXPORT_SYMBOL(cx8802_buf_prepare);
EXPORT_SYMBOL(cx8802_buf_queue);
EXPORT_SYMBOL(cx8802_cancel_buffers);
EXPORT_SYMBOL(cx8802_init_common);
EXPORT_SYMBOL(cx8802_fini_common);
EXPORT_SYMBOL(cx8802_suspend_common);
EXPORT_SYMBOL(cx8802_resume_common);
/* ----------------------------------------------------------- */
/*
* Local variables:
* c-basic-offset: 8
* End:
* kate: eol "unix"; indent-width 3; remove-trailing-space on; replace-trailing-space-save on; tab-width 8; replace-tabs off; space-indent off; mixed-indent off
*/