Commit d8b14f8a authored by Manu Abraham's avatar Manu Abraham Committed by Mauro Carvalho Chehab
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V4L/DVB (13741): [Mantis] Implement HIF Mem Read/Write operations 



Signed-off-by: default avatarManu Abraham <manu@linuxtv.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 12855cac

drivers/media/dvb/mantis/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -4,6 +4,7 @@ mantis-objs = mantis_core.o \ 
		mantis_i2c.o	\

		mantis_dvb.o	\

		mantis_evm.o	\

		mantis_hif.o	\

		mantis_ca.o	\

		mantis_pcmcia.o	\

		mantis_vp1033.o	\

drivers/media/dvb/mantis/mantis_dma.c

+2 −2
Original line number Diff line number Diff line
@@ -190,7 +190,7 @@ void mantis_dma_start(struct mantis_pci *mantis) 


	mantis_risc_program(mantis);

	mmwrite(mantis->risc_dma, MANTIS_RISC_START);

	mmwrite(mmread(MANTIS_GPIF_ADDR) | MANTIS_GPIF_RDWRN, MANTIS_GPIF_ADDR);

	mmwrite(mmread(MANTIS_GPIF_HIFADDR) | MANTIS_GPIF_HIFRDWRN, MANTIS_GPIF_HIFADDR);



	mmwrite(0, MANTIS_DMA_CTL);

	mantis->last_block = mantis->finished_block = 0;
@@ -210,7 +210,7 @@ void mantis_dma_stop(struct mantis_pci *mantis) 
	mask = mmread(MANTIS_INT_MASK);

	dprintk(verbose, MANTIS_DEBUG, 1, "Mantis Stop DMA engine");



	mmwrite((mmread(MANTIS_GPIF_ADDR) & (~(MANTIS_GPIF_RDWRN))), MANTIS_GPIF_ADDR);

	mmwrite((mmread(MANTIS_GPIF_HIFADDR) & (~(MANTIS_GPIF_HIFRDWRN))), MANTIS_GPIF_HIFADDR);



	mmwrite((mmread(MANTIS_DMA_CTL) & ~(MANTIS_FIFO_EN |

					    MANTIS_DCAP_EN |

drivers/media/dvb/mantis/mantis_evm.c

+2 −1
Original line number Diff line number Diff line
@@ -92,7 +92,7 @@ int mantis_evmgr_init(struct mantis_ca *ca) 
	INIT_WORK(&ca->hif_evm_work, mantis_hifevm_work);

	mantis_pcmcia_init(ca);

	schedule_work(&ca->hif_evm_work);



	mantis_hif_init(ca);

	return 0;

}
@@ -102,5 +102,6 @@ void mantis_evmgr_exit(struct mantis_ca *ca) 


	dprintk(verbose, MANTIS_DEBUG, 1, "Mantis Host I/F Event manager exiting");

	flush_scheduled_work();

	mantis_hif_exit(ca);

	mantis_pcmcia_exit(ca);

}

drivers/media/dvb/mantis/mantis_hif.c

0 → 100644
+139 −0
Original line number Diff line number Diff line 
/*

	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;



	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;



	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_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);

}

drivers/media/dvb/mantis/mantis_link.h

+9 −1
Original line number Diff line number Diff line
@@ -31,6 +31,8 @@ enum mantis_sbuf_status { 


struct mantis_slot {

	u32				timeout;

	u32				slave_cfg;

	u32				bar;

};



/* Physical layer */
@@ -40,7 +42,7 @@ enum mantis_slot_state { 
};



struct mantis_ca {

	struct mantis_slot		slot;

	struct mantis_slot		slot[4];



	struct work_struct		hif_evm_work;
@@ -66,4 +68,10 @@ extern void mantis_pcmcia_exit(struct mantis_ca *ca); 
extern int mantis_evmgr_init(struct mantis_ca *ca);

extern void mantis_evmgr_exit(struct mantis_ca *ca);



/* HIF */

extern int mantis_hif_init(struct mantis_ca *ca);

extern void mantis_hif_exit(struct mantis_ca *ca);

extern int mantis_hif_read_mem(struct mantis_ca *ca, u32 addr);

extern int mantis_hif_write_mem(struct mantis_ca *ca, u32 addr, u8 data);



#endif // __MANTIS_LINK_H