[deliverable/linux.git] / drivers / media / dvb / mantis / mantis_hif.c

/*
	Mantis PCI bridge driver

	Copyright (C) 2005, 2006 Manu Abraham (abraham.manu@gmail.com)

	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 "mantis_common.h"
#include "mantis_hif.h"
#include "mantis_link.h" /* temporary due to physical layer stuff */

static int mantis_hif_data_available(struct mantis_ca *ca)
{
	struct mantis_pci *mantis = ca->ca_priv;
	int rc = 0;

	if (wait_event_interruptible_timeout(ca->hif_data_wq,
					     ca->sbuf_status & MANTIS_SBUF_DATA_AVAIL,
					     msecs_to_jiffies(500)) == -ERESTARTSYS) {

		dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Read wait event timeout !", mantis->num);
		rc = -EREMOTEIO;
	}
	ca->sbuf_status &= ~MANTIS_SBUF_DATA_AVAIL;
	udelay(2);
	return rc;
}

static int mantis_hif_sbuf_opdone_wait(struct mantis_ca *ca)
{
	struct mantis_pci *mantis = ca->ca_priv;
	int rc = 0;

	if (wait_event_interruptible_timeout(ca->hif_opdone_wq,
					     ca->hif_event & MANTIS_SBUF_OPDONE,
					     msecs_to_jiffies(500)) == -ERESTARTSYS) {

		dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): Smart buffer operation timeout !", mantis->num);
		rc = -EREMOTEIO;
	}
	ca->hif_event &= ~MANTIS_SBUF_OPDONE;
	udelay(5);
	return rc;
}

int mantis_hif_read_mem(struct mantis_ca *ca, u32 addr)
{
	struct mantis_pci *mantis = ca->ca_priv;
	u32 hif_addr = 0, data, count = 4;

	dprintk(verbose, MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF Mem Read", mantis->num);
	hif_addr |=  MANTIS_GPIF_HIFRDWRN;
	hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
	hif_addr &= ~MANTIS_GPIF_PCMCIAIOM;
	hif_addr |=  addr;

	mmwrite(hif_addr, MANTIS_GPIF_BRADDR);
	mmwrite(count, MANTIS_GPIF_BRBYTES);

	udelay(20);

	mmwrite(hif_addr, MANTIS_GPIF_HIFADDR);
	if (mantis_hif_data_available(ca) != 0) {
		dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): GPIF Smart Buffer burst read failed", mantis->num);
		return -EREMOTEIO;
	}
	if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
		dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): GPIF Smart Buffer operation failed", mantis->num);
		return -EREMOTEIO;
	}
	data = mmread(MANTIS_GPIF_HIFDIN);

	return (data >> 24) & 0xff;
}

int mantis_hif_write_mem(struct mantis_ca *ca, u32 addr, u8 data)
{
	struct mantis_slot *slot = ca->slot;
	struct mantis_pci *mantis = ca->ca_priv;
	u32 hif_addr = 0;

	dprintk(verbose, MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF Mem Write", mantis->num);
	hif_addr &= ~MANTIS_GPIF_HIFRDWRN;
	hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
	hif_addr &= ~MANTIS_GPIF_PCMCIAIOM;
	hif_addr |= addr;

	mmwrite(slot->slave_cfg, MANTIS_GPIF_CFGSLA); /* Slot0 alone for now */

	mmwrite(hif_addr, MANTIS_GPIF_HIFADDR);
	mmwrite(data, MANTIS_GPIF_HIFDOUT);
	ca->hif_job_queue = MANTIS_HIF_MEMWR;

	if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
		ca->hif_job_queue &= ~MANTIS_HIF_MEMWR;
		dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
		return -EREMOTEIO;
	}
	ca->hif_job_queue &= ~MANTIS_HIF_MEMWR;
	return 0;
}

int mantis_hif_read_iom(struct mantis_ca *ca, u32 addr)
{
	struct mantis_pci *mantis = ca->ca_priv;
	u32 data, hif_addr = 0;

	dprintk(verbose, MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF I/O Read", mantis->num);
	hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
	hif_addr |=  MANTIS_GPIF_HIFRDWRN;
	hif_addr |=  MANTIS_GPIF_PCMCIAIOM;
	hif_addr |=  addr;

	mmwrite(hif_addr, MANTIS_GPIF_HIFADDR);
	ca->hif_job_queue = MANTIS_HIF_IOMRD;

	if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
		ca->hif_job_queue &= ~MANTIS_HIF_IOMRD;
		dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
		return -EREMOTEIO;
	}
	udelay(50);
	ca->hif_job_queue &= ~MANTIS_HIF_IOMRD;
	data = mmread(MANTIS_GPIF_HIFDIN);
	hif_addr |= MANTIS_GPIF_PCMCIAREG;
	mmwrite(hif_addr, MANTIS_GPIF_HIFADDR);

	return data;
}

int mantis_hif_write_iom(struct mantis_ca *ca, u32 addr, u8 data)
{
	struct mantis_pci *mantis = ca->ca_priv;
	u32 hif_addr = 0;

	dprintk(verbose, MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF I/O Write", mantis->num);
	hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
	hif_addr &= ~MANTIS_GPIF_HIFRDWRN;
	hif_addr |=  MANTIS_GPIF_PCMCIAIOM;
	hif_addr |=  addr;

	mmwrite(hif_addr, MANTIS_GPIF_HIFADDR);
	mmwrite(data, MANTIS_GPIF_HIFDOUT);

	ca->hif_job_queue = MANTIS_HIF_IOMWR;
	if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
		ca->hif_job_queue &= ~MANTIS_HIF_IOMWR;
		dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
		return -EREMOTEIO;
	}
	udelay(50);
	ca->hif_job_queue &= ~MANTIS_HIF_IOMWR;
	hif_addr |= MANTIS_GPIF_PCMCIAREG;
	mmwrite(hif_addr, MANTIS_GPIF_HIFADDR);

	return 0;
}

int mantis_hif_init(struct mantis_ca *ca)
{
	struct mantis_pci *mantis = ca->ca_priv;
	u32 irqcfg;

	dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Initializing Mantis Host Interface", mantis->num);
	init_waitqueue_head(&ca->hif_data_wq);
	init_waitqueue_head(&ca->hif_opdone_wq);

	irqcfg  = mmread(MANTIS_GPIF_IRQCFG);
	irqcfg |= MANTIS_MASK_BRRDY;
	mmwrite(irqcfg, MANTIS_GPIF_IRQCFG);

	return 0;
}

void mantis_hif_exit(struct mantis_ca *ca)
{
	struct mantis_pci *mantis = ca->ca_priv;
	u32 irqcfg;

	dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Exiting Mantis Host Interface", mantis->num);
	irqcfg = mmread(MANTIS_GPIF_IRQCFG);
	irqcfg &= ~MANTIS_MASK_BRRDY;
	mmwrite(irqcfg, MANTIS_GPIF_IRQCFG);
}
Commit	Line	Data
d8b14f8a MA	1	/*
	2	Mantis PCI bridge driver
	3
	4	Copyright (C) 2005, 2006 Manu Abraham (abraham.manu@gmail.com)
	5
	6	This program is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 2 of the License, or
	9	(at your option) any later version.
	10
	11	This program is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with this program; if not, write to the Free Software
	18	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	19	*/
	20
	21	#include "mantis_common.h"
	22	#include "mantis_hif.h"
	23	#include "mantis_link.h" /* temporary due to physical layer stuff */
	24
	25	static int mantis_hif_data_available(struct mantis_ca *ca)
	26	{
	27	struct mantis_pci *mantis = ca->ca_priv;
	28	int rc = 0;
	29
	30	if (wait_event_interruptible_timeout(ca->hif_data_wq,
	31	ca->sbuf_status & MANTIS_SBUF_DATA_AVAIL,
	32	msecs_to_jiffies(500)) == -ERESTARTSYS) {
	33
	34	dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Read wait event timeout !", mantis->num);
	35	rc = -EREMOTEIO;
	36	}
	37	ca->sbuf_status &= ~MANTIS_SBUF_DATA_AVAIL;
	38	udelay(2);
	39	return rc;
	40	}
	41
	42	static int mantis_hif_sbuf_opdone_wait(struct mantis_ca *ca)
	43	{
	44	struct mantis_pci *mantis = ca->ca_priv;
	45	int rc = 0;
	46
	47	if (wait_event_interruptible_timeout(ca->hif_opdone_wq,
	48	ca->hif_event & MANTIS_SBUF_OPDONE,
	49	msecs_to_jiffies(500)) == -ERESTARTSYS) {
	50
	51	dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): Smart buffer operation timeout !", mantis->num);
	52	rc = -EREMOTEIO;
	53	}
	54	ca->hif_event &= ~MANTIS_SBUF_OPDONE;
	55	udelay(5);
	56	return rc;
	57	}
	58
	59	int mantis_hif_read_mem(struct mantis_ca *ca, u32 addr)
	60	{
	61	struct mantis_pci *mantis = ca->ca_priv;
	62	u32 hif_addr = 0, data, count = 4;
	63
2133ffbf	64	dprintk(verbose, MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF Mem Read", mantis->num);
d8b14f8a MA	65	hif_addr \|= MANTIS_GPIF_HIFRDWRN;
	66	hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
	67	hif_addr &= ~MANTIS_GPIF_PCMCIAIOM;
	68	hif_addr \|= addr;
	69
	70	mmwrite(hif_addr, MANTIS_GPIF_BRADDR);
	71	mmwrite(count, MANTIS_GPIF_BRBYTES);
	72
	73	udelay(20);
	74
	75	mmwrite(hif_addr, MANTIS_GPIF_HIFADDR);
	76	if (mantis_hif_data_available(ca) != 0) {
	77	dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): GPIF Smart Buffer burst read failed", mantis->num);
	78	return -EREMOTEIO;
	79	}
	80	if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
	81	dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): GPIF Smart Buffer operation failed", mantis->num);
	82	return -EREMOTEIO;
	83	}
	84	data = mmread(MANTIS_GPIF_HIFDIN);
	85
	86	return (data >> 24) & 0xff;
	87	}
	88
	89	int mantis_hif_write_mem(struct mantis_ca *ca, u32 addr, u8 data)
	90	{
	91	struct mantis_slot *slot = ca->slot;
	92	struct mantis_pci *mantis = ca->ca_priv;
	93	u32 hif_addr = 0;
	94
2133ffbf	95	dprintk(verbose, MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF Mem Write", mantis->num);
d8b14f8a MA	96	hif_addr &= ~MANTIS_GPIF_HIFRDWRN;
	97	hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
	98	hif_addr &= ~MANTIS_GPIF_PCMCIAIOM;
	99	hif_addr \|= addr;
	100
	101	mmwrite(slot->slave_cfg, MANTIS_GPIF_CFGSLA); /* Slot0 alone for now */
	102
	103	mmwrite(hif_addr, MANTIS_GPIF_HIFADDR);
	104	mmwrite(data, MANTIS_GPIF_HIFDOUT);
	105	ca->hif_job_queue = MANTIS_HIF_MEMWR;
	106
	107	if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
	108	ca->hif_job_queue &= ~MANTIS_HIF_MEMWR;
	109	dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
	110	return -EREMOTEIO;
	111	}
	112	ca->hif_job_queue &= ~MANTIS_HIF_MEMWR;
	113	return 0;
	114	}
	115
6053240f	116	int mantis_hif_read_iom(struct mantis_ca *ca, u32 addr)
c9a750c9 MA	117	{
c9a750c9 MA	118	struct mantis_pci *mantis = ca->ca_priv;
6053240f	119	u32 data, hif_addr = 0;
c9a750c9	120
2133ffbf	121	dprintk(verbose, MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF I/O Read", mantis->num);
c9a750c9 MA	122	hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
	123	hif_addr \|= MANTIS_GPIF_HIFRDWRN;
	124	hif_addr \|= MANTIS_GPIF_PCMCIAIOM;
	125	hif_addr \|= addr;
	126
	127	mmwrite(hif_addr, MANTIS_GPIF_HIFADDR);
	128	ca->hif_job_queue = MANTIS_HIF_IOMRD;
	129
	130	if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
	131	ca->hif_job_queue &= ~MANTIS_HIF_IOMRD;
	132	dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
	133	return -EREMOTEIO;
	134	}
	135	udelay(50);
	136	ca->hif_job_queue &= ~MANTIS_HIF_IOMRD;
6053240f	137	data = mmread(MANTIS_GPIF_HIFDIN);
c9a750c9 MA	138	hif_addr \|= MANTIS_GPIF_PCMCIAREG;
	139	mmwrite(hif_addr, MANTIS_GPIF_HIFADDR);
	140
6053240f	141	return data;
c9a750c9 MA	142	}
c9a750c9 MA	143
6053240f	144	int mantis_hif_write_iom(struct mantis_ca *ca, u32 addr, u8 data)
c9a750c9 MA	145	{
	146	struct mantis_pci *mantis = ca->ca_priv;
	147	u32 hif_addr = 0;
	148
2133ffbf	149	dprintk(verbose, MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF I/O Write", mantis->num);
c9a750c9 MA	150	hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
	151	hif_addr &= ~MANTIS_GPIF_HIFRDWRN;
	152	hif_addr \|= MANTIS_GPIF_PCMCIAIOM;
	153	hif_addr \|= addr;
	154
	155	mmwrite(hif_addr, MANTIS_GPIF_HIFADDR);
	156	mmwrite(data, MANTIS_GPIF_HIFDOUT);
	157
	158	ca->hif_job_queue = MANTIS_HIF_IOMWR;
	159	if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
	160	ca->hif_job_queue &= ~MANTIS_HIF_IOMWR;
	161	dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
	162	return -EREMOTEIO;
	163	}
	164	udelay(50);
	165	ca->hif_job_queue &= ~MANTIS_HIF_IOMWR;
	166	hif_addr \|= MANTIS_GPIF_PCMCIAREG;
	167	mmwrite(hif_addr, MANTIS_GPIF_HIFADDR);
	168
	169	return 0;
	170	}
	171
d8b14f8a MA	172	int mantis_hif_init(struct mantis_ca *ca)
	173	{
	174	struct mantis_pci *mantis = ca->ca_priv;
	175	u32 irqcfg;
	176
	177	dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Initializing Mantis Host Interface", mantis->num);
	178	init_waitqueue_head(&ca->hif_data_wq);
	179	init_waitqueue_head(&ca->hif_opdone_wq);
	180
	181	irqcfg = mmread(MANTIS_GPIF_IRQCFG);
	182	irqcfg \|= MANTIS_MASK_BRRDY;
	183	mmwrite(irqcfg, MANTIS_GPIF_IRQCFG);
	184
	185	return 0;
	186	}
	187
	188	void mantis_hif_exit(struct mantis_ca *ca)
	189	{
	190	struct mantis_pci *mantis = ca->ca_priv;
	191	u32 irqcfg;
	192
	193	dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Exiting Mantis Host Interface", mantis->num);
	194	irqcfg = mmread(MANTIS_GPIF_IRQCFG);
	195	irqcfg &= ~MANTIS_MASK_BRRDY;
	196	mmwrite(irqcfg, MANTIS_GPIF_IRQCFG);
	197	}