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V4L/DVB (13741): [Mantis] Implement HIF Mem Read/Write operations

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Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Manu Abraham 2009-12-04 05:09:47 -03:00 committed by Mauro Carvalho Chehab
parent 12855cac87
commit d8b14f8a76
6 changed files with 157 additions and 8 deletions
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1
drivers/media/dvb/mantis/Makefile
View file

@ -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 \

4
drivers/media/dvb/mantis/mantis_dma.c
View file

@ -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 |

3
drivers/media/dvb/mantis/mantis_evm.c
View file

@ -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);
}

139
drivers/media/dvb/mantis/mantis_hif.c Normal file
View file

@ -0,0 +1,139 @@
/*
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);
}

10
drivers/media/dvb/mantis/mantis_link.h
View file

@ -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

8
drivers/media/dvb/mantis/mantis_reg.h
View file

@ -147,16 +147,16 @@
#define MANTIS_CARD_RESET 0xac
#define MANTIS_GPIF_ADDR 0xb0
#define MANTIS_GPIF_RDWRN (0x01 << 31)
#define MANTIS_GPIF_HIFRDWRN (0x01 << 31)
#define MANTIS_GPIF_PCMCIAREG (0x01 << 27)
#define MANTIS_GPIF_PCMCIAIOM (0x01 << 26)
#define MANTIS_GPIF_HIF_ADDR (0xfffffff << 0)
#define MANTIS_GPIF_HIFADDR (0xfffffff << 0)
#define MANTIS_GPIF_DOUT 0xb4
#define MANTIS_GPIF_HIF_DOUT (0xfffffff << 0)
#define MANTIS_GPIF_HIFDOUT (0xfffffff << 0)
#define MANTIS_GPIF_DIN 0xb8
#define MANTIS_GPIF_HIF_DIN (0xfffffff << 0)
#define MANTIS_GPIF_HIFDIN (0xfffffff << 0)
#define MANTIS_GPIF_SPARE 0xbc
#define MANTIS_GPIF_LOGICRD (0xffff << 16)