[deliverable/linux.git] / drivers / media / dvb / b2c2 / flexcop-pci.c

/*
 * This file is part of linux driver the digital TV devices equipped with B2C2 FlexcopII(b)/III
 *
 * flexcop-pci.c - covers the PCI part including DMA transfers.
 *
 * see flexcop.c for copyright information.
 */

#define FC_LOG_PREFIX "flexcop-pci"
#include "flexcop-common.h"

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");

static int irq_chk_intv = 100;
module_param(irq_chk_intv, int, 0644);
MODULE_PARM_DESC(irq_chk_intv, "set the interval for IRQ streaming watchdog.");

#ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG
#define dprintk(level,args...) \
	do { if ((debug & level)) printk(args); } while (0)
#define DEBSTATUS ""
#else
#define dprintk(level,args...)
#define DEBSTATUS " (debugging is not enabled)"
#endif

#define deb_info(args...)  dprintk(0x01,args)
#define deb_reg(args...)   dprintk(0x02,args)
#define deb_ts(args...)    dprintk(0x04,args)
#define deb_irq(args...)   dprintk(0x08,args)
#define deb_chk(args...)   dprintk(0x10,args)

static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug,
	"set debug level (1=info,2=regs,4=TS,8=irqdma,16=check (|-able))."
	 DEBSTATUS);

#define DRIVER_VERSION "0.1"
#define DRIVER_NAME "Technisat/B2C2 FlexCop II/IIb/III Digital TV PCI Driver"
#define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@desy.de>"

struct flexcop_pci {
	struct pci_dev *pdev;

#define FC_PCI_INIT     0x01
#define FC_PCI_DMA_INIT 0x02
	int init_state;

	void __iomem *io_mem;
	u32 irq;
/* buffersize (at least for DMA1, need to be % 188 == 0,
 * 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;
	int count_prev;
	int stream_problem;

	spinlock_t irq_lock;

	unsigned long last_irq;

	struct delayed_work irq_check_work;

	struct flexcop_device *fc_dev;
};

static int lastwreg,lastwval,lastrreg,lastrval;

static flexcop_ibi_value flexcop_pci_read_ibi_reg (struct flexcop_device *fc, flexcop_ibi_register r)
{
	struct flexcop_pci *fc_pci = fc->bus_specific;
	flexcop_ibi_value v;
	v.raw = readl(fc_pci->io_mem + r);

	if (lastrreg != r || lastrval != v.raw) {
		lastrreg = r; lastrval = v.raw;
		deb_reg("new rd: %3x: %08x\n",r,v.raw);
	}

	return v;
}

static int flexcop_pci_write_ibi_reg(struct flexcop_device *fc, flexcop_ibi_register r, flexcop_ibi_value v)
{
	struct flexcop_pci *fc_pci = fc->bus_specific;

	if (lastwreg != r || lastwval != v.raw) {
		lastwreg = r; lastwval = v.raw;
		deb_reg("new wr: %3x: %08x\n",r,v.raw);
	}

	writel(v.raw, fc_pci->io_mem + r);
	return 0;
}

static void flexcop_pci_irq_check_work(struct work_struct *work)
{
	struct flexcop_pci *fc_pci =
		container_of(work, struct flexcop_pci, irq_check_work.work);
	struct flexcop_device *fc = fc_pci->fc_dev;

	if (fc->feedcount) {

		if (fc_pci->count == fc_pci->count_prev) {
			deb_chk("no IRQ since the last check\n");
			if (fc_pci->stream_problem++ == 3) {
				struct dvb_demux_feed *feed;

				spin_lock_irq(&fc->demux.lock);
				list_for_each_entry(feed, &fc->demux.feed_list,
					list_head) {
					flexcop_pid_feed_control(fc, feed, 0);
				}

				list_for_each_entry(feed, &fc->demux.feed_list,
					list_head) {
					flexcop_pid_feed_control(fc, feed, 1);
				}
				spin_unlock_irq(&fc->demux.lock);

				fc_pci->stream_problem = 0;
			}
		} else {
			fc_pci->stream_problem = 0;
			fc_pci->count_prev = fc_pci->count;
		}
	}

	schedule_delayed_work(&fc_pci->irq_check_work,
			msecs_to_jiffies(irq_chk_intv < 100 ? 100 : irq_chk_intv));
}

/* When PID filtering is turned on, we use the timer IRQ, because small amounts
 * of data need to be passed to the user space instantly as well. When PID
 * filtering is turned off, we use the page-change-IRQ */
static irqreturn_t flexcop_pci_isr(int irq, void *dev_id)
{
	struct flexcop_pci *fc_pci = dev_id;
	struct flexcop_device *fc = fc_pci->fc_dev;
	unsigned long flags;
	flexcop_ibi_value v;
	irqreturn_t ret = IRQ_HANDLED;

	spin_lock_irqsave(&fc_pci->irq_lock,flags);

	v = fc->read_ibi_reg(fc,irq_20c);

   /* errors */
	if (v.irq_20c.Data_receiver_error)
		deb_chk("data receiver error\n");
	if (v.irq_20c.Continuity_error_flag)
		deb_chk("Contunuity error flag is set\n");
	if (v.irq_20c.LLC_SNAP_FLAG_set)
		deb_chk("LLC_SNAP_FLAG_set is set\n");
	if (v.irq_20c.Transport_Error)
		deb_chk("Transport error\n");

	if ((fc_pci->count % 1000) == 0)
		deb_chk("%d valid irq took place so far\n",fc_pci->count);

	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);
		else
			flexcop_pass_dmx_packets(fc_pci->fc_dev,fc_pci->dma[0].cpu_addr1,fc_pci->dma[0].size / 188);

		deb_irq("page change to page: %d\n",!fc_pci->active_dma1_addr);
		fc_pci->active_dma1_addr = !fc_pci->active_dma1_addr;
	} else if (v.irq_20c.DMA1_Timer_Status == 1) {
		/* for the timer IRQ we only can use buffer dmx feeding, because we don't have
		 * complete TS packets when reading from the DMA memory */
		dma_addr_t cur_addr =
			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("%u irq: %08x cur_addr: %llx: cur_pos: %08x, last_cur_pos: %08x ",
				jiffies_to_usecs(jiffies - fc_pci->last_irq),
				v.raw, (unsigned long long)cur_addr, cur_pos,
				fc_pci->last_dma1_cur_pos);
		fc_pci->last_irq = jiffies;

		/* 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) - fc_pci->last_dma1_cur_pos);
			fc_pci->last_dma1_cur_pos = 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;
		fc_pci->count++;
	} else {
		deb_irq("isr for flexcop called, apparently without reason (%08x)\n",v.raw);
		ret = IRQ_NONE;
	}

	spin_unlock_irqrestore(&fc_pci->irq_lock,flags);

	return ret;
}

static int flexcop_pci_stream_control(struct flexcop_device *fc, int onoff)
{
	struct flexcop_pci *fc_pci = fc->bus_specific;
	if (onoff) {
		flexcop_dma_config(fc,&fc_pci->dma[0],FC_DMA_1);
		flexcop_dma_config(fc,&fc_pci->dma[1],FC_DMA_2);

		flexcop_dma_config_timer(fc,FC_DMA_1,0);

		flexcop_dma_xfer_control(fc,FC_DMA_1,FC_DMA_SUBADDR_0 | FC_DMA_SUBADDR_1,1);
		deb_irq("DMA xfer enabled\n");

		fc_pci->last_dma1_cur_pos = 0;
		flexcop_dma_control_timer_irq(fc,FC_DMA_1,1);
		deb_irq("IRQ enabled\n");

		fc_pci->count_prev = fc_pci->count;

//		fc_pci->active_dma1_addr = 0;
//		flexcop_dma_control_size_irq(fc,FC_DMA_1,1);

	} else {
		flexcop_dma_control_timer_irq(fc,FC_DMA_1,0);
		deb_irq("IRQ disabled\n");

//		flexcop_dma_control_size_irq(fc,FC_DMA_1,0);

		flexcop_dma_xfer_control(fc,FC_DMA_1,FC_DMA_SUBADDR_0 | FC_DMA_SUBADDR_1,0);
		deb_irq("DMA xfer disabled\n");
	}

	return 0;
}

static int flexcop_pci_dma_init(struct flexcop_pci *fc_pci)
{
	int ret;
	if ((ret = flexcop_dma_allocate(fc_pci->pdev,&fc_pci->dma[0],FC_DEFAULT_DMA1_BUFSIZE)) != 0)
		return ret;

	if ((ret = flexcop_dma_allocate(fc_pci->pdev,&fc_pci->dma[1],FC_DEFAULT_DMA2_BUFSIZE)) != 0) {
		flexcop_dma_free(&fc_pci->dma[0]);
		return ret;
	}

	flexcop_sram_set_dest(fc_pci->fc_dev,FC_SRAM_DEST_MEDIA | FC_SRAM_DEST_NET, FC_SRAM_DEST_TARGET_DMA1);
	flexcop_sram_set_dest(fc_pci->fc_dev,FC_SRAM_DEST_CAO   | FC_SRAM_DEST_CAI, FC_SRAM_DEST_TARGET_DMA2);

	fc_pci->init_state |= FC_PCI_DMA_INIT;

	return ret;
}

static void flexcop_pci_dma_exit(struct flexcop_pci *fc_pci)
{
	if (fc_pci->init_state & FC_PCI_DMA_INIT) {
		flexcop_dma_free(&fc_pci->dma[0]);
		flexcop_dma_free(&fc_pci->dma[1]);
	}
	fc_pci->init_state &= ~FC_PCI_DMA_INIT;
}

static int flexcop_pci_init(struct flexcop_pci *fc_pci)
{
	int ret;
	u8 card_rev;

	pci_read_config_byte(fc_pci->pdev, PCI_CLASS_REVISION, &card_rev);
	info("card revision %x", card_rev);

	if ((ret = pci_enable_device(fc_pci->pdev)) != 0)
		return ret;

	pci_set_master(fc_pci->pdev);

	/* enable interrupts */
	// pci_write_config_dword(pdev, 0x6c, 0x8000);

	if ((ret = pci_request_regions(fc_pci->pdev, DRIVER_NAME)) != 0)
		goto err_pci_disable_device;

	fc_pci->io_mem = pci_iomap(fc_pci->pdev, 0, 0x800);

	if (!fc_pci->io_mem) {
		err("cannot map io memory\n");
		ret = -EIO;
		goto err_pci_release_regions;
	}

	pci_set_drvdata(fc_pci->pdev, fc_pci);
	spin_lock_init(&fc_pci->irq_lock);
	if ((ret = request_irq(fc_pci->pdev->irq, flexcop_pci_isr,
					IRQF_SHARED, DRIVER_NAME, fc_pci)) != 0)
		goto err_pci_iounmap;

	fc_pci->init_state |= FC_PCI_INIT;
	return ret;

err_pci_iounmap:
	pci_iounmap(fc_pci->pdev, fc_pci->io_mem);
	pci_set_drvdata(fc_pci->pdev, NULL);
err_pci_release_regions:
	pci_release_regions(fc_pci->pdev);
err_pci_disable_device:
	pci_disable_device(fc_pci->pdev);
	return ret;
}

static void flexcop_pci_exit(struct flexcop_pci *fc_pci)
{
	if (fc_pci->init_state & FC_PCI_INIT) {
		free_irq(fc_pci->pdev->irq, fc_pci);
		pci_iounmap(fc_pci->pdev, fc_pci->io_mem);
		pci_set_drvdata(fc_pci->pdev, NULL);
		pci_release_regions(fc_pci->pdev);
		pci_disable_device(fc_pci->pdev);
	}
	fc_pci->init_state &= ~FC_PCI_INIT;
}


static int flexcop_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	struct flexcop_device *fc;
	struct flexcop_pci *fc_pci;
	int ret = -ENOMEM;

	if ((fc = flexcop_device_kmalloc(sizeof(struct flexcop_pci))) == NULL) {
		err("out of memory\n");
		return -ENOMEM;
	}

/* general flexcop init */
	fc_pci = fc->bus_specific;
	fc_pci->fc_dev = fc;

	fc->read_ibi_reg = flexcop_pci_read_ibi_reg;
	fc->write_ibi_reg = flexcop_pci_write_ibi_reg;
	fc->i2c_request = flexcop_i2c_request;
	fc->get_mac_addr = flexcop_eeprom_check_mac_addr;

	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;

	fc->dev = &pdev->dev;
	fc->owner = THIS_MODULE;

/* bus specific part */
	fc_pci->pdev = pdev;
	if ((ret = flexcop_pci_init(fc_pci)) != 0)
		goto err_kfree;

/* init flexcop */
	if ((ret = flexcop_device_initialize(fc)) != 0)
		goto err_pci_exit;

/* init dma */
	if ((ret = flexcop_pci_dma_init(fc_pci)) != 0)
		goto err_fc_exit;

	INIT_DELAYED_WORK(&fc_pci->irq_check_work, flexcop_pci_irq_check_work);

		if (irq_chk_intv > 0)
			schedule_delayed_work(&fc_pci->irq_check_work,
		msecs_to_jiffies(irq_chk_intv < 100 ? 100 : irq_chk_intv));

	return ret;

err_fc_exit:
	flexcop_device_exit(fc);
err_pci_exit:
	flexcop_pci_exit(fc_pci);
err_kfree:
	flexcop_device_kfree(fc);
	return ret;
}

/* in theory every _exit function should be called exactly two times,
 * here and in the bail-out-part of the _init-function
 */
static void flexcop_pci_remove(struct pci_dev *pdev)
{
	struct flexcop_pci *fc_pci = pci_get_drvdata(pdev);

	if (irq_chk_intv > 0)
		cancel_delayed_work(&fc_pci->irq_check_work);

	flexcop_pci_dma_exit(fc_pci);
	flexcop_device_exit(fc_pci->fc_dev);
	flexcop_pci_exit(fc_pci);
	flexcop_device_kfree(fc_pci->fc_dev);
}

static struct pci_device_id flexcop_pci_tbl[] = {
	{ PCI_DEVICE(0x13d0, 0x2103) },
/*	{ PCI_DEVICE(0x13d0, 0x2200) }, ? */
	{ },
};

MODULE_DEVICE_TABLE(pci, flexcop_pci_tbl);

static struct pci_driver flexcop_pci_driver = {
	.name     = "b2c2_flexcop_pci",
	.id_table = flexcop_pci_tbl,
	.probe    = flexcop_pci_probe,
	.remove   = flexcop_pci_remove,
};

static int __init flexcop_pci_module_init(void)
{
	return pci_register_driver(&flexcop_pci_driver);
}

static void __exit flexcop_pci_module_exit(void)
{
	pci_unregister_driver(&flexcop_pci_driver);
}

module_init(flexcop_pci_module_init);
module_exit(flexcop_pci_module_exit);

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_NAME);
MODULE_LICENSE("GPL");
Commit	Line	Data
2add87a9 JS	1	/*
	2	* This file is part of linux driver the digital TV devices equipped with B2C2 FlexcopII(b)/III
	3	*
	4	* flexcop-pci.c - covers the PCI part including DMA transfers.
	5	*
	6	* see flexcop.c for copyright information.
	7	*/
	8
	9	#define FC_LOG_PREFIX "flexcop-pci"
	10	#include "flexcop-common.h"
	11
c4ee3fd4	12	static int enable_pid_filtering = 1;
2add87a9 JS	13	module_param(enable_pid_filtering, int, 0444);
	14	MODULE_PARM_DESC(enable_pid_filtering, "enable hardware pid filtering: supported values: 0 (fullts), 1");
	15
382c5546	16	static int irq_chk_intv = 100;
64221be7	17	module_param(irq_chk_intv, int, 0644);
382c5546	18	MODULE_PARM_DESC(irq_chk_intv, "set the interval for IRQ streaming watchdog.");
64221be7	19
2add87a9 JS	20	#ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG
	21	#define dprintk(level,args...) \
	22	do { if ((debug & level)) printk(args); } while (0)
	23	#define DEBSTATUS ""
	24	#else
	25	#define dprintk(level,args...)
	26	#define DEBSTATUS " (debugging is not enabled)"
	27	#endif
	28
	29	#define deb_info(args...) dprintk(0x01,args)
	30	#define deb_reg(args...) dprintk(0x02,args)
	31	#define deb_ts(args...) dprintk(0x04,args)
	32	#define deb_irq(args...) dprintk(0x08,args)
64221be7	33	#define deb_chk(args...) dprintk(0x10,args)
2add87a9	34
ff699e6b	35	static int debug;
2add87a9	36	module_param(debug, int, 0644);
382c5546 PB	37	MODULE_PARM_DESC(debug,
	38	"set debug level (1=info,2=regs,4=TS,8=irqdma,16=check (\|-able))."
	39	DEBSTATUS);
2add87a9 JS	40
	41	#define DRIVER_VERSION "0.1"
	42	#define DRIVER_NAME "Technisat/B2C2 FlexCop II/IIb/III Digital TV PCI Driver"
	43	#define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@desy.de>"
	44
	45	struct flexcop_pci {
	46	struct pci_dev *pdev;
	47
	48	#define FC_PCI_INIT 0x01
	49	#define FC_PCI_DMA_INIT 0x02
	50	int init_state;
	51
	52	void __iomem *io_mem;
	53	u32 irq;
	54	/* buffersize (at least for DMA1, need to be % 188 == 0,
c4ee3fd4	55	* this logic is required */
2add87a9 JS	56	#define FC_DEFAULT_DMA1_BUFSIZE (1280 * 188)
	57	#define FC_DEFAULT_DMA2_BUFSIZE (10 * 188)
	58	struct flexcop_dma dma[2];
	59
	60	int active_dma1_addr; /* 0 = addr0 of dma1; 1 = addr1 of dma1 */
	61	u32 last_dma1_cur_pos; /* position of the pointer last time the timer/packet irq occured */
c4ee3fd4	62	int count;
382c5546 PB	63	int count_prev;
382c5546 PB	64	int stream_problem;
2add87a9	65
4853f16a JS	66	spinlock_t irq_lock;
4853f16a JS	67
64221be7 PB	68	unsigned long last_irq;
64221be7 PB	69
c4028958	70	struct delayed_work irq_check_work;
64221be7	71
2add87a9 JS	72	struct flexcop_device *fc_dev;
	73	};
	74
	75	static int lastwreg,lastwval,lastrreg,lastrval;
	76
	77	static flexcop_ibi_value flexcop_pci_read_ibi_reg (struct flexcop_device *fc, flexcop_ibi_register r)
	78	{
	79	struct flexcop_pci *fc_pci = fc->bus_specific;
	80	flexcop_ibi_value v;
	81	v.raw = readl(fc_pci->io_mem + r);
	82
	83	if (lastrreg != r \|\| lastrval != v.raw) {
	84	lastrreg = r; lastrval = v.raw;
	85	deb_reg("new rd: %3x: %08x\n",r,v.raw);
	86	}
	87
	88	return v;
	89	}
	90
	91	static int flexcop_pci_write_ibi_reg(struct flexcop_device *fc, flexcop_ibi_register r, flexcop_ibi_value v)
	92	{
	93	struct flexcop_pci *fc_pci = fc->bus_specific;
	94
	95	if (lastwreg != r \|\| lastwval != v.raw) {
	96	lastwreg = r; lastwval = v.raw;
	97	deb_reg("new wr: %3x: %08x\n",r,v.raw);
	98	}
	99
	100	writel(v.raw, fc_pci->io_mem + r);
	101	return 0;
	102	}
	103
c4028958	104	static void flexcop_pci_irq_check_work(struct work_struct *work)
64221be7	105	{
c4028958 DH	106	struct flexcop_pci *fc_pci =
c4028958 DH	107	container_of(work, struct flexcop_pci, irq_check_work.work);
64221be7 PB	108	struct flexcop_device *fc = fc_pci->fc_dev;
64221be7 PB	109
382c5546 PB	110	if (fc->feedcount) {
	111
	112	if (fc_pci->count == fc_pci->count_prev) {
	113	deb_chk("no IRQ since the last check\n");
	114	if (fc_pci->stream_problem++ == 3) {
	115	struct dvb_demux_feed *feed;
	116
	117	spin_lock_irq(&fc->demux.lock);
	118	list_for_each_entry(feed, &fc->demux.feed_list,
	119	list_head) {
	120	flexcop_pid_feed_control(fc, feed, 0);
	121	}
	122
	123	list_for_each_entry(feed, &fc->demux.feed_list,
	124	list_head) {
	125	flexcop_pid_feed_control(fc, feed, 1);
	126	}
	127	spin_unlock_irq(&fc->demux.lock);
	128
	129	fc_pci->stream_problem = 0;
	130	}
	131	} else {
	132	fc_pci->stream_problem = 0;
	133	fc_pci->count_prev = fc_pci->count;
	134	}
	135	}
64221be7 PB	136
	137	schedule_delayed_work(&fc_pci->irq_check_work,
	138	msecs_to_jiffies(irq_chk_intv < 100 ? 100 : irq_chk_intv));
	139	}
	140
2add87a9 JS	141	/* When PID filtering is turned on, we use the timer IRQ, because small amounts
	142	* of data need to be passed to the user space instantly as well. When PID
	143	* filtering is turned off, we use the page-change-IRQ */
7d12e780	144	static irqreturn_t flexcop_pci_isr(int irq, void *dev_id)
2add87a9 JS	145	{
	146	struct flexcop_pci *fc_pci = dev_id;
	147	struct flexcop_device *fc = fc_pci->fc_dev;
4f210e07	148	unsigned long flags;
64221be7	149	flexcop_ibi_value v;
4853f16a JS	150	irqreturn_t ret = IRQ_HANDLED;
4853f16a JS	151
4f210e07	152	spin_lock_irqsave(&fc_pci->irq_lock,flags);
2add87a9	153
64221be7 PB	154	v = fc->read_ibi_reg(fc,irq_20c);
	155
	156	/* errors */
	157	if (v.irq_20c.Data_receiver_error)
	158	deb_chk("data receiver error\n");
	159	if (v.irq_20c.Continuity_error_flag)
	160	deb_chk("Contunuity error flag is set\n");
	161	if (v.irq_20c.LLC_SNAP_FLAG_set)
	162	deb_chk("LLC_SNAP_FLAG_set is set\n");
	163	if (v.irq_20c.Transport_Error)
	164	deb_chk("Transport error\n");
	165
	166	if ((fc_pci->count % 1000) == 0)
	167	deb_chk("%d valid irq took place so far\n",fc_pci->count);
	168
2add87a9 JS	169	if (v.irq_20c.DMA1_IRQ_Status == 1) {
	170	if (fc_pci->active_dma1_addr == 0)
	171	flexcop_pass_dmx_packets(fc_pci->fc_dev,fc_pci->dma[0].cpu_addr0,fc_pci->dma[0].size / 188);
	172	else
	173	flexcop_pass_dmx_packets(fc_pci->fc_dev,fc_pci->dma[0].cpu_addr1,fc_pci->dma[0].size / 188);
	174
	175	deb_irq("page change to page: %d\n",!fc_pci->active_dma1_addr);
	176	fc_pci->active_dma1_addr = !fc_pci->active_dma1_addr;
	177	} else if (v.irq_20c.DMA1_Timer_Status == 1) {
	178	/* for the timer IRQ we only can use buffer dmx feeding, because we don't have
	179	* complete TS packets when reading from the DMA memory */
	180	dma_addr_t cur_addr =
	181	fc->read_ibi_reg(fc,dma1_008).dma_0x8.dma_cur_addr << 2;
	182	u32 cur_pos = cur_addr - fc_pci->dma[0].dma_addr0;
	183
608268b2 RD	184	deb_irq("%u irq: %08x cur_addr: %llx: cur_pos: %08x, last_cur_pos: %08x ",
	185	jiffies_to_usecs(jiffies - fc_pci->last_irq),
	186	v.raw, (unsigned long long)cur_addr, cur_pos,
	187	fc_pci->last_dma1_cur_pos);
64221be7	188	fc_pci->last_irq = jiffies;
c4ee3fd4	189
2add87a9 JS	190	/* buffer end was reached, restarted from the beginning
	191	* pass the data from last_cur_pos to the buffer end to the demux
	192	*/
	193	if (cur_pos < fc_pci->last_dma1_cur_pos) {
c4ee3fd4	194	deb_irq(" end was reached: passing %d bytes ",(fc_pci->dma[0].size*2 - 1) - fc_pci->last_dma1_cur_pos);
2add87a9 JS	195	flexcop_pass_dmx_data(fc_pci->fc_dev,
2add87a9 JS	196	fc_pci->dma[0].cpu_addr0 + fc_pci->last_dma1_cur_pos,
c4ee3fd4	197	(fc_pci->dma[0].size*2) - fc_pci->last_dma1_cur_pos);
2add87a9 JS	198	fc_pci->last_dma1_cur_pos = 0;
	199	}
	200
	201	if (cur_pos > fc_pci->last_dma1_cur_pos) {
c4ee3fd4	202	deb_irq(" passing %d bytes ",cur_pos - fc_pci->last_dma1_cur_pos);
2add87a9 JS	203	flexcop_pass_dmx_data(fc_pci->fc_dev,
	204	fc_pci->dma[0].cpu_addr0 + fc_pci->last_dma1_cur_pos,
	205	cur_pos - fc_pci->last_dma1_cur_pos);
	206	}
c4ee3fd4	207	deb_irq("\n");
2add87a9 JS	208
2add87a9 JS	209	fc_pci->last_dma1_cur_pos = cur_pos;
64221be7 PB	210	fc_pci->count++;
	211	} else {
	212	deb_irq("isr for flexcop called, apparently without reason (%08x)\n",v.raw);
4853f16a	213	ret = IRQ_NONE;
64221be7	214	}
4853f16a	215
4f210e07	216	spin_unlock_irqrestore(&fc_pci->irq_lock,flags);
2add87a9	217
4853f16a	218	return ret;
2add87a9 JS	219	}
	220
	221	static int flexcop_pci_stream_control(struct flexcop_device *fc, int onoff)
	222	{
	223	struct flexcop_pci *fc_pci = fc->bus_specific;
	224	if (onoff) {
64221be7 PB	225	flexcop_dma_config(fc,&fc_pci->dma[0],FC_DMA_1);
64221be7 PB	226	flexcop_dma_config(fc,&fc_pci->dma[1],FC_DMA_2);
2add87a9	227
64221be7	228	flexcop_dma_config_timer(fc,FC_DMA_1,0);
2add87a9	229
64221be7 PB	230	flexcop_dma_xfer_control(fc,FC_DMA_1,FC_DMA_SUBADDR_0 \| FC_DMA_SUBADDR_1,1);
64221be7 PB	231	deb_irq("DMA xfer enabled\n");
2add87a9	232
64221be7 PB	233	fc_pci->last_dma1_cur_pos = 0;
	234	flexcop_dma_control_timer_irq(fc,FC_DMA_1,1);
	235	deb_irq("IRQ enabled\n");
	236
382c5546 PB	237	fc_pci->count_prev = fc_pci->count;
382c5546 PB	238
64221be7 PB	239	// fc_pci->active_dma1_addr = 0;
	240	// flexcop_dma_control_size_irq(fc,FC_DMA_1,1);
	241
2add87a9	242	} else {
64221be7 PB	243	flexcop_dma_control_timer_irq(fc,FC_DMA_1,0);
64221be7 PB	244	deb_irq("IRQ disabled\n");
2add87a9	245
64221be7 PB	246	// flexcop_dma_control_size_irq(fc,FC_DMA_1,0);
	247
	248	flexcop_dma_xfer_control(fc,FC_DMA_1,FC_DMA_SUBADDR_0 \| FC_DMA_SUBADDR_1,0);
	249	deb_irq("DMA xfer disabled\n");
2add87a9 JS	250	}
	251
	252	return 0;
	253	}
	254
	255	static int flexcop_pci_dma_init(struct flexcop_pci *fc_pci)
	256	{
	257	int ret;
	258	if ((ret = flexcop_dma_allocate(fc_pci->pdev,&fc_pci->dma[0],FC_DEFAULT_DMA1_BUFSIZE)) != 0)
	259	return ret;
	260
8397703e TP	261	if ((ret = flexcop_dma_allocate(fc_pci->pdev,&fc_pci->dma[1],FC_DEFAULT_DMA2_BUFSIZE)) != 0) {
	262	flexcop_dma_free(&fc_pci->dma[0]);
	263	return ret;
	264	}
2add87a9 JS	265
	266	flexcop_sram_set_dest(fc_pci->fc_dev,FC_SRAM_DEST_MEDIA \| FC_SRAM_DEST_NET, FC_SRAM_DEST_TARGET_DMA1);
	267	flexcop_sram_set_dest(fc_pci->fc_dev,FC_SRAM_DEST_CAO \| FC_SRAM_DEST_CAI, FC_SRAM_DEST_TARGET_DMA2);
	268
	269	fc_pci->init_state \|= FC_PCI_DMA_INIT;
64221be7	270
2add87a9 JS	271	return ret;
	272	}
	273
	274	static void flexcop_pci_dma_exit(struct flexcop_pci *fc_pci)
	275	{
	276	if (fc_pci->init_state & FC_PCI_DMA_INIT) {
	277	flexcop_dma_free(&fc_pci->dma[0]);
	278	flexcop_dma_free(&fc_pci->dma[1]);
	279	}
	280	fc_pci->init_state &= ~FC_PCI_DMA_INIT;
	281	}
	282
	283	static int flexcop_pci_init(struct flexcop_pci *fc_pci)
	284	{
	285	int ret;
	286	u8 card_rev;
	287
	288	pci_read_config_byte(fc_pci->pdev, PCI_CLASS_REVISION, &card_rev);
	289	info("card revision %x", card_rev);
	290
	291	if ((ret = pci_enable_device(fc_pci->pdev)) != 0)
	292	return ret;
	293
	294	pci_set_master(fc_pci->pdev);
	295
	296	/* enable interrupts */
	297	// pci_write_config_dword(pdev, 0x6c, 0x8000);
	298
	299	if ((ret = pci_request_regions(fc_pci->pdev, DRIVER_NAME)) != 0)
	300	goto err_pci_disable_device;
	301
	302	fc_pci->io_mem = pci_iomap(fc_pci->pdev, 0, 0x800);
	303
	304	if (!fc_pci->io_mem) {
	305	err("cannot map io memory\n");
	306	ret = -EIO;
	307	goto err_pci_release_regions;
	308	}
	309
	310	pci_set_drvdata(fc_pci->pdev, fc_pci);
4f210e07	311	spin_lock_init(&fc_pci->irq_lock);
64221be7	312	if ((ret = request_irq(fc_pci->pdev->irq, flexcop_pci_isr,
8076fe32	313	IRQF_SHARED, DRIVER_NAME, fc_pci)) != 0)
2add87a9 JS	314	goto err_pci_iounmap;
	315
	316	fc_pci->init_state \|= FC_PCI_INIT;
8397703e	317	return ret;
2add87a9 JS	318
	319	err_pci_iounmap:
	320	pci_iounmap(fc_pci->pdev, fc_pci->io_mem);
	321	pci_set_drvdata(fc_pci->pdev, NULL);
	322	err_pci_release_regions:
	323	pci_release_regions(fc_pci->pdev);
	324	err_pci_disable_device:
	325	pci_disable_device(fc_pci->pdev);
2add87a9 JS	326	return ret;
	327	}
	328
	329	static void flexcop_pci_exit(struct flexcop_pci *fc_pci)
	330	{
	331	if (fc_pci->init_state & FC_PCI_INIT) {
	332	free_irq(fc_pci->pdev->irq, fc_pci);
	333	pci_iounmap(fc_pci->pdev, fc_pci->io_mem);
	334	pci_set_drvdata(fc_pci->pdev, NULL);
	335	pci_release_regions(fc_pci->pdev);
	336	pci_disable_device(fc_pci->pdev);
	337	}
	338	fc_pci->init_state &= ~FC_PCI_INIT;
	339	}
	340
	341
	342	static int flexcop_pci_probe(struct pci_dev pdev, const struct pci_device_id ent)
	343	{
	344	struct flexcop_device *fc;
	345	struct flexcop_pci *fc_pci;
	346	int ret = -ENOMEM;
	347
	348	if ((fc = flexcop_device_kmalloc(sizeof(struct flexcop_pci))) == NULL) {
	349	err("out of memory\n");
	350	return -ENOMEM;
	351	}
	352
	353	/* general flexcop init */
	354	fc_pci = fc->bus_specific;
	355	fc_pci->fc_dev = fc;
	356
	357	fc->read_ibi_reg = flexcop_pci_read_ibi_reg;
	358	fc->write_ibi_reg = flexcop_pci_write_ibi_reg;
	359	fc->i2c_request = flexcop_i2c_request;
	360	fc->get_mac_addr = flexcop_eeprom_check_mac_addr;
	361
	362	fc->stream_control = flexcop_pci_stream_control;
	363
c4ee3fd4 JS	364	if (enable_pid_filtering)
	365	info("will use the HW PID filter.");
	366	else
	367	info("will pass the complete TS to the demuxer.");
	368
2add87a9 JS	369	fc->pid_filtering = enable_pid_filtering;
	370	fc->bus_type = FC_PCI;
	371
	372	fc->dev = &pdev->dev;
59a7ad6c	373	fc->owner = THIS_MODULE;
2add87a9 JS	374
	375	/* bus specific part */
	376	fc_pci->pdev = pdev;
	377	if ((ret = flexcop_pci_init(fc_pci)) != 0)
	378	goto err_kfree;
	379
	380	/* init flexcop */
	381	if ((ret = flexcop_device_initialize(fc)) != 0)
	382	goto err_pci_exit;
	383
	384	/* init dma */
	385	if ((ret = flexcop_pci_dma_init(fc_pci)) != 0)
	386	goto err_fc_exit;
	387
c4028958	388	INIT_DELAYED_WORK(&fc_pci->irq_check_work, flexcop_pci_irq_check_work);
64221be7	389
382c5546 PB	390	if (irq_chk_intv > 0)
	391	schedule_delayed_work(&fc_pci->irq_check_work,
	392	msecs_to_jiffies(irq_chk_intv < 100 ? 100 : irq_chk_intv));
	393
8397703e TP	394	return ret;
8397703e TP	395
2add87a9 JS	396	err_fc_exit:
	397	flexcop_device_exit(fc);
	398	err_pci_exit:
	399	flexcop_pci_exit(fc_pci);
	400	err_kfree:
	401	flexcop_device_kfree(fc);
2add87a9 JS	402	return ret;
	403	}
	404
	405	/* in theory every _exit function should be called exactly two times,
	406	* here and in the bail-out-part of the _init-function
	407	*/
	408	static void flexcop_pci_remove(struct pci_dev *pdev)
	409	{
	410	struct flexcop_pci *fc_pci = pci_get_drvdata(pdev);
	411
382c5546 PB	412	if (irq_chk_intv > 0)
	413	cancel_delayed_work(&fc_pci->irq_check_work);
	414
2add87a9 JS	415	flexcop_pci_dma_exit(fc_pci);
	416	flexcop_device_exit(fc_pci->fc_dev);
	417	flexcop_pci_exit(fc_pci);
	418	flexcop_device_kfree(fc_pci->fc_dev);
	419	}
	420
	421	static struct pci_device_id flexcop_pci_tbl[] = {
	422	{ PCI_DEVICE(0x13d0, 0x2103) },
64221be7	423	/* { PCI_DEVICE(0x13d0, 0x2200) }, ? */
2add87a9 JS	424	{ },
	425	};
	426
	427	MODULE_DEVICE_TABLE(pci, flexcop_pci_tbl);
	428
	429	static struct pci_driver flexcop_pci_driver = {
63b5c1c4	430	.name = "b2c2_flexcop_pci",
2add87a9	431	.id_table = flexcop_pci_tbl,
64221be7 PB	432	.probe = flexcop_pci_probe,
64221be7 PB	433	.remove = flexcop_pci_remove,
2add87a9 JS	434	};
	435
	436	static int __init flexcop_pci_module_init(void)
	437	{
	438	return pci_register_driver(&flexcop_pci_driver);
	439	}
	440
	441	static void __exit flexcop_pci_module_exit(void)
	442	{
	443	pci_unregister_driver(&flexcop_pci_driver);
	444	}
	445
	446	module_init(flexcop_pci_module_init);
	447	module_exit(flexcop_pci_module_exit);
	448
	449	MODULE_AUTHOR(DRIVER_AUTHOR);
	450	MODULE_DESCRIPTION(DRIVER_NAME);
	451	MODULE_LICENSE("GPL");