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linux/drivers/media/dvb/mantis/mantis_hif.c
Alexey Dobriyan b7f080cfe2 net: remove mm.h inclusion from netdevice.h 
Remove linux/mm.h inclusion from netdevice.h -- it's unused (I've checked manually).

To prevent mm.h inclusion via other channels also extract "enum dma_data_direction"
definition into separate header. This tiny piece is what gluing netdevice.h with mm.h
via "netdevice.h => dmaengine.h => dma-mapping.h => scatterlist.h => mm.h".
Removal of mm.h from scatterlist.h was tried and was found not feasible
on most archs, so the link was cutoff earlier.

Hope people are OK with tiny include file.

Note, that mm_types.h is still dragged in, but it is a separate story.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-21 19:17:20 -07:00

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/*
Mantis PCI bridge driver
Copyright (C) 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 <linux/kernel.h>
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <asm/io.h>
#include "dmxdev.h"
#include "dvbdev.h"
#include "dvb_demux.h"
#include "dvb_frontend.h"
#include "dvb_net.h"
#include "mantis_common.h"
#include "mantis_hif.h"
#include "mantis_link.h" /* temporary due to physical layer stuff */
#include "mantis_reg.h"
static int mantis_hif_sbuf_opdone_wait(struct mantis_ca *ca)
{
struct mantis_pci *mantis = ca->ca_priv;
int rc = 0;
if (wait_event_timeout(ca->hif_opdone_wq,
ca->hif_event & MANTIS_SBUF_OPDONE,
msecs_to_jiffies(500)) == -ERESTARTSYS) {
dprintk(MANTIS_ERROR, 1, "Adapter(%d) Slot(0): Smart buffer operation timeout !", mantis->num);
rc = -EREMOTEIO;
}
dprintk(MANTIS_DEBUG, 1, "Smart Buffer Operation complete");
ca->hif_event &= ~MANTIS_SBUF_OPDONE;
return rc;
}
static int mantis_hif_write_wait(struct mantis_ca *ca)
{
struct mantis_pci *mantis = ca->ca_priv;
u32 opdone = 0, timeout = 0;
int rc = 0;
if (wait_event_timeout(ca->hif_write_wq,
mantis->gpif_status & MANTIS_GPIF_WRACK,
msecs_to_jiffies(500)) == -ERESTARTSYS) {
dprintk(MANTIS_ERROR, 1, "Adapter(%d) Slot(0): Write ACK timed out !", mantis->num);
rc = -EREMOTEIO;
}
dprintk(MANTIS_DEBUG, 1, "Write Acknowledged");
mantis->gpif_status &= ~MANTIS_GPIF_WRACK;
while (!opdone) {
opdone = (mmread(MANTIS_GPIF_STATUS) & MANTIS_SBUF_OPDONE);
udelay(500);
timeout++;
if (timeout > 100) {
dprintk(MANTIS_ERROR, 1, "Adater(%d) Slot(0): Write operation timed out!", mantis->num);
rc = -ETIMEDOUT;
break;
}
}
dprintk(MANTIS_DEBUG, 1, "HIF Write success");
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(MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF Mem Read", mantis->num);
mutex_lock(&ca->ca_lock);
hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
hif_addr &= ~MANTIS_GPIF_PCMCIAIOM;
hif_addr |= MANTIS_HIF_STATUS;
hif_addr |= addr;
mmwrite(hif_addr, MANTIS_GPIF_BRADDR);
mmwrite(count, MANTIS_GPIF_BRBYTES);
udelay(20);
mmwrite(hif_addr | MANTIS_GPIF_HIFRDWRN, MANTIS_GPIF_ADDR);
if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
dprintk(MANTIS_ERROR, 1, "Adapter(%d) Slot(0): GPIF Smart Buffer operation failed", mantis->num);
mutex_unlock(&ca->ca_lock);
return -EREMOTEIO;
}
data = mmread(MANTIS_GPIF_DIN);
mutex_unlock(&ca->ca_lock);
dprintk(MANTIS_DEBUG, 1, "Mem Read: 0x%02x", data);
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(MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF Mem Write", mantis->num);
mutex_lock(&ca->ca_lock);
hif_addr &= ~MANTIS_GPIF_HIFRDWRN;
hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
hif_addr &= ~MANTIS_GPIF_PCMCIAIOM;
hif_addr |= MANTIS_HIF_STATUS;
hif_addr |= addr;
mmwrite(slot->slave_cfg, MANTIS_GPIF_CFGSLA); /* Slot0 alone for now */
mmwrite(hif_addr, MANTIS_GPIF_ADDR);
mmwrite(data, MANTIS_GPIF_DOUT);
if (mantis_hif_write_wait(ca) != 0) {
dprintk(MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
mutex_unlock(&ca->ca_lock);
return -EREMOTEIO;
}
dprintk(MANTIS_DEBUG, 1, "Mem Write: (0x%02x to 0x%02x)", data, addr);
mutex_unlock(&ca->ca_lock);
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(MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF I/O Read", mantis->num);
mutex_lock(&ca->ca_lock);
hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
hif_addr |= MANTIS_GPIF_PCMCIAIOM;
hif_addr |= MANTIS_HIF_STATUS;
hif_addr |= addr;
mmwrite(hif_addr, MANTIS_GPIF_BRADDR);
mmwrite(1, MANTIS_GPIF_BRBYTES);
udelay(20);
mmwrite(hif_addr | MANTIS_GPIF_HIFRDWRN, MANTIS_GPIF_ADDR);
if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
dprintk(MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
mutex_unlock(&ca->ca_lock);
return -EREMOTEIO;
}
data = mmread(MANTIS_GPIF_DIN);
dprintk(MANTIS_DEBUG, 1, "I/O Read: 0x%02x", data);
udelay(50);
mutex_unlock(&ca->ca_lock);
return (u8) 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(MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF I/O Write", mantis->num);
mutex_lock(&ca->ca_lock);
hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
hif_addr &= ~MANTIS_GPIF_HIFRDWRN;
hif_addr |= MANTIS_GPIF_PCMCIAIOM;
hif_addr |= MANTIS_HIF_STATUS;
hif_addr |= addr;
mmwrite(hif_addr, MANTIS_GPIF_ADDR);
mmwrite(data, MANTIS_GPIF_DOUT);
if (mantis_hif_write_wait(ca) != 0) {
dprintk(MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
mutex_unlock(&ca->ca_lock);
return -EREMOTEIO;
}
dprintk(MANTIS_DEBUG, 1, "I/O Write: (0x%02x to 0x%02x)", data, addr);
mutex_unlock(&ca->ca_lock);
udelay(50);
return 0;
}
int mantis_hif_init(struct mantis_ca *ca)
{
struct mantis_slot *slot = ca->slot;
struct mantis_pci *mantis = ca->ca_priv;
u32 irqcfg;
slot[0].slave_cfg = 0x70773028;
dprintk(MANTIS_ERROR, 1, "Adapter(%d) Initializing Mantis Host Interface", mantis->num);
mutex_lock(&ca->ca_lock);
irqcfg = mmread(MANTIS_GPIF_IRQCFG);
irqcfg = MANTIS_MASK_BRRDY |
MANTIS_MASK_WRACK |
MANTIS_MASK_EXTIRQ |
MANTIS_MASK_WSTO |
MANTIS_MASK_OTHERR |
MANTIS_MASK_OVFLW;
mmwrite(irqcfg, MANTIS_GPIF_IRQCFG);
mutex_unlock(&ca->ca_lock);
return 0;
}
void mantis_hif_exit(struct mantis_ca *ca)
{
struct mantis_pci *mantis = ca->ca_priv;
u32 irqcfg;
dprintk(MANTIS_ERROR, 1, "Adapter(%d) Exiting Mantis Host Interface", mantis->num);
mutex_lock(&ca->ca_lock);
irqcfg = mmread(MANTIS_GPIF_IRQCFG);
irqcfg &= ~MANTIS_MASK_BRRDY;
mmwrite(irqcfg, MANTIS_GPIF_IRQCFG);
mutex_unlock(&ca->ca_lock);
}
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