240 lines
6.6 KiB
C
240 lines
6.6 KiB
C
|
/*
|
||
|
|
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, "Adapter(%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);
|
||
|
|
}
|