[mirror_ubuntu-artful-kernel.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");

#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)

static int debug = 0;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "set debug level (1=info,2=regs,4=TS,8=irqdma (|-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;

	spinlock_t irq_lock;

	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;
}

/* 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_irq(int irq, void *dev_id, struct pt_regs *regs)
{
	struct flexcop_pci *fc_pci = dev_id;
	struct flexcop_device *fc = fc_pci->fc_dev;
	flexcop_ibi_value v = fc->read_ibi_reg(fc,irq_20c);
	irqreturn_t ret = IRQ_HANDLED;

	spin_lock_irq(&fc_pci->irq_lock);

	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("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) - 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
		ret = IRQ_NONE;

	spin_unlock_irq(&fc_pci->irq_lock);

/* packet count would be ideal for hw filtering, but it isn't working. Either
 * the data book is wrong, or I'm unable to read it correctly */

/*	if (v.irq_20c.DMA1_Size_IRQ_Status == 1) { packet counter */

	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,FC_DMA_SUBADDR_0 | FC_DMA_SUBADDR_1);
		flexcop_dma_config(fc,&fc_pci->dma[1],FC_DMA_2,FC_DMA_SUBADDR_0 | FC_DMA_SUBADDR_1);
		flexcop_dma_config_timer(fc,FC_DMA_1,1);

		if (fc_pci->fc_dev->pid_filtering) {
			fc_pci->last_dma1_cur_pos = 0;
			flexcop_dma_control_timer_irq(fc,FC_DMA_1,1);
		} else {
			fc_pci->active_dma1_addr = 0;
			flexcop_dma_control_size_irq(fc,FC_DMA_1,1);
		}

/*		flexcop_dma_config_packet_count(fc,FC_DMA_1,0xc0);
		flexcop_dma_control_packet_irq(fc,FC_DMA_1,1); */

		deb_irq("irqs enabled\n");
	} else {
		if (fc_pci->fc_dev->pid_filtering)
			flexcop_dma_control_timer_irq(fc,FC_DMA_1,0);
		else
			flexcop_dma_control_size_irq(fc,FC_DMA_1,0);

//		flexcop_dma_control_packet_irq(fc,FC_DMA_1,0);
		deb_irq("irqs 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)
		goto dma1_free;

	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;
	goto success;
dma1_free:
	flexcop_dma_free(&fc_pci->dma[0]);

success:
	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);

	if ((ret = request_irq(fc_pci->pdev->irq, flexcop_pci_irq,
					SA_SHIRQ, DRIVER_NAME, fc_pci)) != 0)
		goto err_pci_iounmap;

	spin_lock_init(&fc_pci->irq_lock);

	fc_pci->init_state |= FC_PCI_INIT;
	goto success;

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);

success:
	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;

	goto success;
err_fc_exit:
	flexcop_device_exit(fc);
err_pci_exit:
	flexcop_pci_exit(fc_pci);
err_kfree:
	flexcop_device_kfree(fc);
success:
	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);

	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) }, PCI FlexCopIII ? */
	{ },
};

MODULE_DEVICE_TABLE(pci, flexcop_pci_tbl);

static struct pci_driver flexcop_pci_driver = {
	.name = "Technisat/B2C2 FlexCop II/IIb/III 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
	16	#ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG
	17	#define dprintk(level,args...) \
	18	do { if ((debug & level)) printk(args); } while (0)
	19	#define DEBSTATUS ""
	20	#else
	21	#define dprintk(level,args...)
	22	#define DEBSTATUS " (debugging is not enabled)"
	23	#endif
	24
	25	#define deb_info(args...) dprintk(0x01,args)
	26	#define deb_reg(args...) dprintk(0x02,args)
	27	#define deb_ts(args...) dprintk(0x04,args)
	28	#define deb_irq(args...) dprintk(0x08,args)
	29
	30	static int debug = 0;
	31	module_param(debug, int, 0644);
	32	MODULE_PARM_DESC(debug, "set debug level (1=info,2=regs,4=TS,8=irqdma (\|-able))." DEBSTATUS);
	33
	34	#define DRIVER_VERSION "0.1"
	35	#define DRIVER_NAME "Technisat/B2C2 FlexCop II/IIb/III Digital TV PCI Driver"
	36	#define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@desy.de>"
	37
	38	struct flexcop_pci {
	39	struct pci_dev *pdev;
	40
	41	#define FC_PCI_INIT 0x01
	42	#define FC_PCI_DMA_INIT 0x02
	43	int init_state;
	44
	45	void __iomem *io_mem;
	46	u32 irq;
	47	/* buffersize (at least for DMA1, need to be % 188 == 0,
c4ee3fd4	48	* this logic is required */
2add87a9 JS	49	#define FC_DEFAULT_DMA1_BUFSIZE (1280 * 188)
	50	#define FC_DEFAULT_DMA2_BUFSIZE (10 * 188)
	51	struct flexcop_dma dma[2];
	52
	53	int active_dma1_addr; /* 0 = addr0 of dma1; 1 = addr1 of dma1 */
	54	u32 last_dma1_cur_pos; /* position of the pointer last time the timer/packet irq occured */
c4ee3fd4	55	int count;
2add87a9	56
4853f16a JS	57	spinlock_t irq_lock;
4853f16a JS	58
2add87a9 JS	59	struct flexcop_device *fc_dev;
	60	};
	61
	62	static int lastwreg,lastwval,lastrreg,lastrval;
	63
	64	static flexcop_ibi_value flexcop_pci_read_ibi_reg (struct flexcop_device *fc, flexcop_ibi_register r)
	65	{
	66	struct flexcop_pci *fc_pci = fc->bus_specific;
	67	flexcop_ibi_value v;
	68	v.raw = readl(fc_pci->io_mem + r);
	69
	70	if (lastrreg != r \|\| lastrval != v.raw) {
	71	lastrreg = r; lastrval = v.raw;
	72	deb_reg("new rd: %3x: %08x\n",r,v.raw);
	73	}
	74
	75	return v;
	76	}
	77
	78	static int flexcop_pci_write_ibi_reg(struct flexcop_device *fc, flexcop_ibi_register r, flexcop_ibi_value v)
	79	{
	80	struct flexcop_pci *fc_pci = fc->bus_specific;
	81
	82	if (lastwreg != r \|\| lastwval != v.raw) {
	83	lastwreg = r; lastwval = v.raw;
	84	deb_reg("new wr: %3x: %08x\n",r,v.raw);
	85	}
	86
	87	writel(v.raw, fc_pci->io_mem + r);
	88	return 0;
	89	}
	90
	91	/* When PID filtering is turned on, we use the timer IRQ, because small amounts
	92	* of data need to be passed to the user space instantly as well. When PID
	93	* filtering is turned off, we use the page-change-IRQ */
	94	static irqreturn_t flexcop_pci_irq(int irq, void dev_id, struct pt_regs regs)
	95	{
	96	struct flexcop_pci *fc_pci = dev_id;
	97	struct flexcop_device *fc = fc_pci->fc_dev;
	98	flexcop_ibi_value v = fc->read_ibi_reg(fc,irq_20c);
4853f16a JS	99	irqreturn_t ret = IRQ_HANDLED;
	100
	101	spin_lock_irq(&fc_pci->irq_lock);
2add87a9	102
2add87a9 JS	103	if (v.irq_20c.DMA1_IRQ_Status == 1) {
	104	if (fc_pci->active_dma1_addr == 0)
	105	flexcop_pass_dmx_packets(fc_pci->fc_dev,fc_pci->dma[0].cpu_addr0,fc_pci->dma[0].size / 188);
	106	else
	107	flexcop_pass_dmx_packets(fc_pci->fc_dev,fc_pci->dma[0].cpu_addr1,fc_pci->dma[0].size / 188);
	108
	109	deb_irq("page change to page: %d\n",!fc_pci->active_dma1_addr);
	110	fc_pci->active_dma1_addr = !fc_pci->active_dma1_addr;
	111	} else if (v.irq_20c.DMA1_Timer_Status == 1) {
	112	/* for the timer IRQ we only can use buffer dmx feeding, because we don't have
	113	* complete TS packets when reading from the DMA memory */
	114	dma_addr_t cur_addr =
	115	fc->read_ibi_reg(fc,dma1_008).dma_0x8.dma_cur_addr << 2;
	116	u32 cur_pos = cur_addr - fc_pci->dma[0].dma_addr0;
	117
c4ee3fd4 JS	118	deb_irq("irq: %08x cur_addr: %08x: cur_pos: %08x, last_cur_pos: %08x ",
	119	v.raw,cur_addr,cur_pos,fc_pci->last_dma1_cur_pos);
	120
2add87a9 JS	121	/* buffer end was reached, restarted from the beginning
	122	* pass the data from last_cur_pos to the buffer end to the demux
	123	*/
	124	if (cur_pos < fc_pci->last_dma1_cur_pos) {
c4ee3fd4	125	deb_irq(" end was reached: passing %d bytes ",(fc_pci->dma[0].size*2 - 1) - fc_pci->last_dma1_cur_pos);
2add87a9 JS	126	flexcop_pass_dmx_data(fc_pci->fc_dev,
2add87a9 JS	127	fc_pci->dma[0].cpu_addr0 + fc_pci->last_dma1_cur_pos,
c4ee3fd4	128	(fc_pci->dma[0].size*2) - fc_pci->last_dma1_cur_pos);
2add87a9	129	fc_pci->last_dma1_cur_pos = 0;
c4ee3fd4	130	fc_pci->count = 0;
2add87a9 JS	131	}
	132
	133	if (cur_pos > fc_pci->last_dma1_cur_pos) {
c4ee3fd4	134	deb_irq(" passing %d bytes ",cur_pos - fc_pci->last_dma1_cur_pos);
2add87a9 JS	135	flexcop_pass_dmx_data(fc_pci->fc_dev,
	136	fc_pci->dma[0].cpu_addr0 + fc_pci->last_dma1_cur_pos,
	137	cur_pos - fc_pci->last_dma1_cur_pos);
	138	}
c4ee3fd4	139	deb_irq("\n");
2add87a9 JS	140
2add87a9 JS	141	fc_pci->last_dma1_cur_pos = cur_pos;
4853f16a JS	142	} else
	143	ret = IRQ_NONE;
	144
	145	spin_unlock_irq(&fc_pci->irq_lock);
2add87a9 JS	146
	147	/* packet count would be ideal for hw filtering, but it isn't working. Either
	148	* the data book is wrong, or I'm unable to read it correctly */
	149
	150	/* if (v.irq_20c.DMA1_Size_IRQ_Status == 1) { packet counter */
	151
4853f16a	152	return ret;
2add87a9 JS	153	}
	154
	155	static int flexcop_pci_stream_control(struct flexcop_device *fc, int onoff)
	156	{
	157	struct flexcop_pci *fc_pci = fc->bus_specific;
	158	if (onoff) {
	159	flexcop_dma_config(fc,&fc_pci->dma[0],FC_DMA_1,FC_DMA_SUBADDR_0 \| FC_DMA_SUBADDR_1);
	160	flexcop_dma_config(fc,&fc_pci->dma[1],FC_DMA_2,FC_DMA_SUBADDR_0 \| FC_DMA_SUBADDR_1);
	161	flexcop_dma_config_timer(fc,FC_DMA_1,1);
	162
	163	if (fc_pci->fc_dev->pid_filtering) {
	164	fc_pci->last_dma1_cur_pos = 0;
	165	flexcop_dma_control_timer_irq(fc,FC_DMA_1,1);
	166	} else {
	167	fc_pci->active_dma1_addr = 0;
	168	flexcop_dma_control_size_irq(fc,FC_DMA_1,1);
	169	}
	170
	171	/* flexcop_dma_config_packet_count(fc,FC_DMA_1,0xc0);
	172	flexcop_dma_control_packet_irq(fc,FC_DMA_1,1); */
	173
	174	deb_irq("irqs enabled\n");
	175	} else {
	176	if (fc_pci->fc_dev->pid_filtering)
	177	flexcop_dma_control_timer_irq(fc,FC_DMA_1,0);
	178	else
	179	flexcop_dma_control_size_irq(fc,FC_DMA_1,0);
	180
	181	// flexcop_dma_control_packet_irq(fc,FC_DMA_1,0);
	182	deb_irq("irqs disabled\n");
	183	}
	184
	185	return 0;
	186	}
	187
	188	static int flexcop_pci_dma_init(struct flexcop_pci *fc_pci)
	189	{
	190	int ret;
	191	if ((ret = flexcop_dma_allocate(fc_pci->pdev,&fc_pci->dma[0],FC_DEFAULT_DMA1_BUFSIZE)) != 0)
	192	return ret;
	193
	194	if ((ret = flexcop_dma_allocate(fc_pci->pdev,&fc_pci->dma[1],FC_DEFAULT_DMA2_BUFSIZE)) != 0)
	195	goto dma1_free;
	196
	197	flexcop_sram_set_dest(fc_pci->fc_dev,FC_SRAM_DEST_MEDIA \| FC_SRAM_DEST_NET, FC_SRAM_DEST_TARGET_DMA1);
	198	flexcop_sram_set_dest(fc_pci->fc_dev,FC_SRAM_DEST_CAO \| FC_SRAM_DEST_CAI, FC_SRAM_DEST_TARGET_DMA2);
	199
	200	fc_pci->init_state \|= FC_PCI_DMA_INIT;
	201	goto success;
	202	dma1_free:
	203	flexcop_dma_free(&fc_pci->dma[0]);
	204
	205	success:
	206	return ret;
	207	}
	208
	209	static void flexcop_pci_dma_exit(struct flexcop_pci *fc_pci)
	210	{
	211	if (fc_pci->init_state & FC_PCI_DMA_INIT) {
	212	flexcop_dma_free(&fc_pci->dma[0]);
	213	flexcop_dma_free(&fc_pci->dma[1]);
	214	}
	215	fc_pci->init_state &= ~FC_PCI_DMA_INIT;
	216	}
217
218	static int flexcop_pci_init(struct flexcop_pci *fc_pci)
219	{
220	int ret;
221	u8 card_rev;
222
223	pci_read_config_byte(fc_pci->pdev, PCI_CLASS_REVISION, &card_rev);
224	info("card revision %x", card_rev);
225
226	if ((ret = pci_enable_device(fc_pci->pdev)) != 0)
227	return ret;
228
229	pci_set_master(fc_pci->pdev);
230
231	/* enable interrupts */
232	// pci_write_config_dword(pdev, 0x6c, 0x8000);
233
234	if ((ret = pci_request_regions(fc_pci->pdev, DRIVER_NAME)) != 0)
235	goto err_pci_disable_device;
236
237	fc_pci->io_mem = pci_iomap(fc_pci->pdev, 0, 0x800);
238
239	if (!fc_pci->io_mem) {
240	err("cannot map io memory\n");
241	ret = -EIO;
242	goto err_pci_release_regions;
243	}
244
245	pci_set_drvdata(fc_pci->pdev, fc_pci);
246
247	if ((ret = request_irq(fc_pci->pdev->irq, flexcop_pci_irq,
248	SA_SHIRQ, DRIVER_NAME, fc_pci)) != 0)
249	goto err_pci_iounmap;
250
4853f16a JS	251	spin_lock_init(&fc_pci->irq_lock);
4853f16a JS	252
2add87a9 JS	253	fc_pci->init_state \|= FC_PCI_INIT;
	254	goto success;
	255
	256	err_pci_iounmap:
	257	pci_iounmap(fc_pci->pdev, fc_pci->io_mem);
	258	pci_set_drvdata(fc_pci->pdev, NULL);
	259	err_pci_release_regions:
	260	pci_release_regions(fc_pci->pdev);
	261	err_pci_disable_device:
	262	pci_disable_device(fc_pci->pdev);
	263
	264	success:
	265	return ret;
	266	}
	267
	268	static void flexcop_pci_exit(struct flexcop_pci *fc_pci)
	269	{
	270	if (fc_pci->init_state & FC_PCI_INIT) {
	271	free_irq(fc_pci->pdev->irq, fc_pci);
	272	pci_iounmap(fc_pci->pdev, fc_pci->io_mem);
	273	pci_set_drvdata(fc_pci->pdev, NULL);
	274	pci_release_regions(fc_pci->pdev);
	275	pci_disable_device(fc_pci->pdev);
	276	}
	277	fc_pci->init_state &= ~FC_PCI_INIT;
	278	}
	279
	280
	281	static int flexcop_pci_probe(struct pci_dev pdev, const struct pci_device_id ent)
	282	{
	283	struct flexcop_device *fc;
	284	struct flexcop_pci *fc_pci;
	285	int ret = -ENOMEM;
	286
	287	if ((fc = flexcop_device_kmalloc(sizeof(struct flexcop_pci))) == NULL) {
	288	err("out of memory\n");
	289	return -ENOMEM;
	290	}
	291
	292	/* general flexcop init */
	293	fc_pci = fc->bus_specific;
	294	fc_pci->fc_dev = fc;
	295
	296	fc->read_ibi_reg = flexcop_pci_read_ibi_reg;
	297	fc->write_ibi_reg = flexcop_pci_write_ibi_reg;
	298	fc->i2c_request = flexcop_i2c_request;
	299	fc->get_mac_addr = flexcop_eeprom_check_mac_addr;
	300
	301	fc->stream_control = flexcop_pci_stream_control;
	302
c4ee3fd4 JS	303	if (enable_pid_filtering)
	304	info("will use the HW PID filter.");
	305	else
	306	info("will pass the complete TS to the demuxer.");
	307
2add87a9 JS	308	fc->pid_filtering = enable_pid_filtering;
	309	fc->bus_type = FC_PCI;
	310
	311	fc->dev = &pdev->dev;
59a7ad6c	312	fc->owner = THIS_MODULE;
2add87a9 JS	313
	314	/* bus specific part */
	315	fc_pci->pdev = pdev;
	316	if ((ret = flexcop_pci_init(fc_pci)) != 0)
	317	goto err_kfree;
	318
	319	/* init flexcop */
	320	if ((ret = flexcop_device_initialize(fc)) != 0)
	321	goto err_pci_exit;
	322
	323	/* init dma */
	324	if ((ret = flexcop_pci_dma_init(fc_pci)) != 0)
	325	goto err_fc_exit;
	326
	327	goto success;
	328	err_fc_exit:
	329	flexcop_device_exit(fc);
	330	err_pci_exit:
	331	flexcop_pci_exit(fc_pci);
	332	err_kfree:
	333	flexcop_device_kfree(fc);
	334	success:
	335	return ret;
	336	}
	337
	338	/* in theory every _exit function should be called exactly two times,
	339	* here and in the bail-out-part of the _init-function
	340	*/
	341	static void flexcop_pci_remove(struct pci_dev *pdev)
	342	{
	343	struct flexcop_pci *fc_pci = pci_get_drvdata(pdev);
	344
	345	flexcop_pci_dma_exit(fc_pci);
	346	flexcop_device_exit(fc_pci->fc_dev);
	347	flexcop_pci_exit(fc_pci);
	348	flexcop_device_kfree(fc_pci->fc_dev);
	349	}
	350
	351	static struct pci_device_id flexcop_pci_tbl[] = {
	352	{ PCI_DEVICE(0x13d0, 0x2103) },
	353	/* { PCI_DEVICE(0x13d0, 0x2200) }, PCI FlexCopIII ? */
	354	{ },
	355	};
	356
	357	MODULE_DEVICE_TABLE(pci, flexcop_pci_tbl);
	358
	359	static struct pci_driver flexcop_pci_driver = {
	360	.name = "Technisat/B2C2 FlexCop II/IIb/III PCI",
	361	.id_table = flexcop_pci_tbl,
	362	.probe = flexcop_pci_probe,
	363	.remove = flexcop_pci_remove,
	364	};
	365
	366	static int __init flexcop_pci_module_init(void)
	367	{
	368	return pci_register_driver(&flexcop_pci_driver);
	369	}
	370
	371	static void __exit flexcop_pci_module_exit(void)
	372	{
	373	pci_unregister_driver(&flexcop_pci_driver);
	374	}
	375
	376	module_init(flexcop_pci_module_init);
377	module_exit(flexcop_pci_module_exit);
378
379	MODULE_AUTHOR(DRIVER_AUTHOR);
380	MODULE_DESCRIPTION(DRIVER_NAME);
381	MODULE_LICENSE("GPL");