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zircon-guest/third_party/linux/refs/heads/linux-rolling-stable/./drivers/gpib/tnt4882/tnt4882_gpib.c
blob: 51a920e1d9a4529d6dc9159a15cc37d9a83b3dd0 [file] [edit]
// SPDX-License-Identifier: GPL-2.0
/***************************************************************************
* National Instruments boards using tnt4882 or compatible chips (at-gpib, etc).
* copyright : (C) 2001, 2002 by Frank Mori Hess
***************************************************************************/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#define dev_fmt pr_fmt
#define DRV_NAME KBUILD_MODNAME
#include <linux/ioport.h>
#include <linux/sched.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/pci_ids.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/isapnp.h>
#include "nec7210.h"
#include "gpibP.h"
#include "mite.h"
#include "tnt4882_registers.h"
static const int ISAPNP_VENDOR_ID_NI = ISAPNP_VENDOR('N', 'I', 'C');
static const int ISAPNP_ID_NI_ATGPIB_TNT = 0xc601;
enum {
PCI_DEVICE_ID_NI_GPIB = 0xc801,
PCI_DEVICE_ID_NI_GPIB_PLUS = 0xc811,
PCI_DEVICE_ID_NI_GPIB_PLUS2 = 0x71ad,
PCI_DEVICE_ID_NI_PXIGPIB = 0xc821,
PCI_DEVICE_ID_NI_PMCGPIB = 0xc831,
PCI_DEVICE_ID_NI_PCIEGPIB = 0x70cf,
PCI_DEVICE_ID_NI_PCIE2GPIB = 0x710e,
// Measurement Computing PCI-488 same design as PCI-GPIB with TNT5004
PCI_DEVICE_ID_MC_PCI488 = 0x7259,
PCI_DEVICE_ID_CEC_NI_GPIB = 0x7258
};
// struct which defines private_data for tnt4882 devices
struct tnt4882_priv {
struct nec7210_priv nec7210_priv;
struct mite_struct *mite;
struct pnp_dev *pnp_dev;
unsigned int irq;
unsigned short imr0_bits;
unsigned short imr3_bits;
unsigned short auxg_bits; // bits written to auxiliary register G
};
static irqreturn_t tnt4882_internal_interrupt(struct gpib_board *board);
// register offset for nec7210 compatible registers
static const int atgpib_reg_offset = 2;
// number of ioports used
static const int atgpib_iosize = 32;
/* paged io */
static inline unsigned int tnt_paged_readb(struct tnt4882_priv *priv, unsigned long offset)
{
iowrite8(AUX_PAGEIN, priv->nec7210_priv.mmiobase + AUXMR * priv->nec7210_priv.offset);
udelay(1);
return ioread8(priv->nec7210_priv.mmiobase + offset);
}
static inline void tnt_paged_writeb(struct tnt4882_priv *priv, unsigned int value,
unsigned long offset)
{
iowrite8(AUX_PAGEIN, priv->nec7210_priv.mmiobase + AUXMR * priv->nec7210_priv.offset);
udelay(1);
iowrite8(value, priv->nec7210_priv.mmiobase + offset);
}
/* readb/writeb wrappers */
static inline unsigned short tnt_readb(struct tnt4882_priv *priv, unsigned long offset)
{
void __iomem *address = priv->nec7210_priv.mmiobase + offset;
unsigned long flags;
unsigned short retval;
spinlock_t *register_lock = &priv->nec7210_priv.register_page_lock;
spin_lock_irqsave(register_lock, flags);
switch (offset) {
case CSR:
case SASR:
case ISR0:
case BSR:
switch (priv->nec7210_priv.type) {
case TNT4882:
case TNT5004:
retval = ioread8(address);
break;
case NAT4882:
retval = tnt_paged_readb(priv, offset - tnt_pagein_offset);
break;
case NEC7210:
retval = 0;
break;
default:
retval = 0;
break;
}
break;
default:
retval = ioread8(address);
break;
}
spin_unlock_irqrestore(register_lock, flags);
return retval;
}
static inline void tnt_writeb(struct tnt4882_priv *priv, unsigned short value, unsigned long offset)
{
void __iomem *address = priv->nec7210_priv.mmiobase + offset;
unsigned long flags;
spinlock_t *register_lock = &priv->nec7210_priv.register_page_lock;
spin_lock_irqsave(register_lock, flags);
switch (offset) {
case KEYREG:
case IMR0:
case BCR:
switch (priv->nec7210_priv.type) {
case TNT4882:
case TNT5004:
iowrite8(value, address);
break;
case NAT4882:
tnt_paged_writeb(priv, value, offset - tnt_pagein_offset);
break;
case NEC7210:
break;
default:
break;
}
break;
default:
iowrite8(value, address);
break;
}
spin_unlock_irqrestore(register_lock, flags);
}
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("GPIB driver for National Instruments boards using tnt4882 or compatible chips");
static int tnt4882_line_status(const struct gpib_board *board)
{
int status = VALID_ALL;
int bcsr_bits;
struct tnt4882_priv *tnt_priv;
tnt_priv = board->private_data;
bcsr_bits = tnt_readb(tnt_priv, BSR);
if (bcsr_bits & BCSR_REN_BIT)
status |= BUS_REN;
if (bcsr_bits & BCSR_IFC_BIT)
status |= BUS_IFC;
if (bcsr_bits & BCSR_SRQ_BIT)
status |= BUS_SRQ;
if (bcsr_bits & BCSR_EOI_BIT)
status |= BUS_EOI;
if (bcsr_bits & BCSR_NRFD_BIT)
status |= BUS_NRFD;
if (bcsr_bits & BCSR_NDAC_BIT)
status |= BUS_NDAC;
if (bcsr_bits & BCSR_DAV_BIT)
status |= BUS_DAV;
if (bcsr_bits & BCSR_ATN_BIT)
status |= BUS_ATN;
return status;
}
static int tnt4882_t1_delay(struct gpib_board *board, unsigned int nano_sec)
{
struct tnt4882_priv *tnt_priv = board->private_data;
struct nec7210_priv *nec_priv = &tnt_priv->nec7210_priv;
unsigned int retval;
retval = nec7210_t1_delay(board, nec_priv, nano_sec);
if (nec_priv->type == NEC7210)
return retval;
if (nano_sec <= 350) {
tnt_writeb(tnt_priv, MSTD, KEYREG);
retval = 350;
} else {
tnt_writeb(tnt_priv, 0, KEYREG);
}
if (nano_sec > 500 && nano_sec <= 1100) {
write_byte(nec_priv, AUXRI | USTD, AUXMR);
retval = 1100;
} else {
write_byte(nec_priv, AUXRI, AUXMR);
}
return retval;
}
static int fifo_word_available(struct tnt4882_priv *tnt_priv)
{
int status2;
int retval;
status2 = tnt_readb(tnt_priv, STS2);
retval = (status2 & AEFN) && (status2 & BEFN);
return retval;
}
static int fifo_byte_available(struct tnt4882_priv *tnt_priv)
{
int status2;
int retval;
status2 = tnt_readb(tnt_priv, STS2);
retval = (status2 & AEFN) || (status2 & BEFN);
return retval;
}
static int fifo_xfer_done(struct tnt4882_priv *tnt_priv)
{
int status1;
int retval;
status1 = tnt_readb(tnt_priv, STS1);
retval = status1 & (S_DONE | S_HALT);
return retval;
}
static int drain_fifo_words(struct tnt4882_priv *tnt_priv, u8 *buffer, int num_bytes)
{
int count = 0;
struct nec7210_priv *nec_priv = &tnt_priv->nec7210_priv;
while (fifo_word_available(tnt_priv) && count + 2 <= num_bytes) {
short word;
word = ioread16(nec_priv->mmiobase + FIFOB);
buffer[count++] = word & 0xff;
buffer[count++] = (word >> 8) & 0xff;
}
return count;
}
static void tnt4882_release_holdoff(struct gpib_board *board, struct tnt4882_priv *tnt_priv)
{
struct nec7210_priv *nec_priv = &tnt_priv->nec7210_priv;
unsigned short sasr_bits;
sasr_bits = tnt_readb(tnt_priv, SASR);
/*
* tnt4882 not in one-chip mode won't always release holdoff unless we
* are in the right mode when release handshake command is given
*/
if (sasr_bits & AEHS_BIT) /* holding off due to holdoff on end mode*/ {
nec7210_set_handshake_mode(board, nec_priv, HR_HLDE);
write_byte(nec_priv, AUX_FH, AUXMR);
} else if (sasr_bits & ANHS1_BIT) { /* held off due to holdoff on all data mode*/
nec7210_set_handshake_mode(board, nec_priv, HR_HLDA);
write_byte(nec_priv, AUX_FH, AUXMR);
nec7210_set_handshake_mode(board, nec_priv, HR_HLDE);
} else { /* held off due to holdoff immediately command */
nec7210_set_handshake_mode(board, nec_priv, HR_HLDE);
write_byte(nec_priv, AUX_FH, AUXMR);
}
}
static int tnt4882_accel_read(struct gpib_board *board, u8 *buffer, size_t length, int *end,
size_t *bytes_read)
{
size_t count = 0;
ssize_t retval = 0;
struct tnt4882_priv *tnt_priv = board->private_data;
struct nec7210_priv *nec_priv = &tnt_priv->nec7210_priv;
unsigned int bits;
s32 hw_count;
unsigned long flags;
*bytes_read = 0;
// FIXME: really, DEV_CLEAR_BN should happen elsewhere to prevent race
clear_bit(DEV_CLEAR_BN, &nec_priv->state);
clear_bit(ADR_CHANGE_BN, &nec_priv->state);
nec7210_set_reg_bits(nec_priv, IMR1, HR_ENDIE, HR_ENDIE);
if (nec_priv->type != TNT4882 && nec_priv->type != TNT5004)
nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAI, HR_DMAI);
else
nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAI, 0);
tnt_writeb(tnt_priv, nec_priv->auxa_bits | HR_HLDA, CCR);
bits = TNT_B_16BIT | TNT_IN | TNT_CCEN;
tnt_writeb(tnt_priv, bits, CFG);
tnt_writeb(tnt_priv, RESET_FIFO, CMDR);
udelay(1);
// load 2's complement of count into hardware counters
hw_count = -length;
tnt_writeb(tnt_priv, hw_count & 0xff, CNT0);
tnt_writeb(tnt_priv, (hw_count >> 8) & 0xff, CNT1);
tnt_writeb(tnt_priv, (hw_count >> 16) & 0xff, CNT2);
tnt_writeb(tnt_priv, (hw_count >> 24) & 0xff, CNT3);
tnt4882_release_holdoff(board, tnt_priv);
tnt_writeb(tnt_priv, GO, CMDR);
udelay(1);
spin_lock_irqsave(&board->spinlock, flags);
tnt_priv->imr3_bits |= HR_DONE | HR_NEF;
tnt_writeb(tnt_priv, tnt_priv->imr3_bits, IMR3);
spin_unlock_irqrestore(&board->spinlock, flags);
while (count + 2 <= length &&
test_bit(RECEIVED_END_BN, &nec_priv->state) == 0 &&
fifo_xfer_done(tnt_priv) == 0) {
// wait until a word is ready
if (wait_event_interruptible(board->wait,
fifo_word_available(tnt_priv) ||
fifo_xfer_done(tnt_priv) ||
test_bit(RECEIVED_END_BN, &nec_priv->state) ||
test_bit(DEV_CLEAR_BN, &nec_priv->state) ||
test_bit(ADR_CHANGE_BN, &nec_priv->state) ||
test_bit(TIMO_NUM, &board->status))) {
retval = -ERESTARTSYS;
break;
}
if (test_bit(TIMO_NUM, &board->status)) {
retval = -ETIMEDOUT;
break;
}
if (test_bit(DEV_CLEAR_BN, &nec_priv->state)) {
retval = -EINTR;
break;
}
if (test_bit(ADR_CHANGE_BN, &nec_priv->state)) {
retval = -EINTR;
break;
}
spin_lock_irqsave(&board->spinlock, flags);
count += drain_fifo_words(tnt_priv, &buffer[count], length - count);
tnt_priv->imr3_bits |= HR_NEF;
tnt_writeb(tnt_priv, tnt_priv->imr3_bits, IMR3);
spin_unlock_irqrestore(&board->spinlock, flags);
if (need_resched())
schedule();
}
// wait for last byte
if (count < length) {
spin_lock_irqsave(&board->spinlock, flags);
tnt_priv->imr3_bits |= HR_DONE | HR_NEF;
tnt_writeb(tnt_priv, tnt_priv->imr3_bits, IMR3);
spin_unlock_irqrestore(&board->spinlock, flags);
if (wait_event_interruptible(board->wait,
fifo_xfer_done(tnt_priv) ||
test_bit(RECEIVED_END_BN, &nec_priv->state) ||
test_bit(DEV_CLEAR_BN, &nec_priv->state) ||
test_bit(ADR_CHANGE_BN, &nec_priv->state) ||
test_bit(TIMO_NUM, &board->status))) {
retval = -ERESTARTSYS;
}
if (test_bit(TIMO_NUM, &board->status))
retval = -ETIMEDOUT;
if (test_bit(DEV_CLEAR_BN, &nec_priv->state))
retval = -EINTR;
if (test_bit(ADR_CHANGE_BN, &nec_priv->state))
retval = -EINTR;
count += drain_fifo_words(tnt_priv, &buffer[count], length - count);
if (fifo_byte_available(tnt_priv) && count < length)
buffer[count++] = tnt_readb(tnt_priv, FIFOB);
}
if (count < length)
tnt_writeb(tnt_priv, STOP, CMDR);
udelay(1);
nec7210_set_reg_bits(nec_priv, IMR1, HR_ENDIE, 0);
nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAI, 0);
/*
* force handling of any pending interrupts (seems to be needed
* to keep interrupts from getting hosed, plus for syncing
* with RECEIVED_END below)
*/
tnt4882_internal_interrupt(board);
/* RECEIVED_END should be in sync now */
if (test_and_clear_bit(RECEIVED_END_BN, &nec_priv->state))
*end = 1;
if (retval < 0) {
// force immediate holdoff
write_byte(nec_priv, AUX_HLDI, AUXMR);
set_bit(RFD_HOLDOFF_BN, &nec_priv->state);
}
*bytes_read = count;
return retval;
}
static int fifo_space_available(struct tnt4882_priv *tnt_priv)
{
int status2;
int retval;
status2 = tnt_readb(tnt_priv, STS2);
retval = (status2 & AFFN) && (status2 & BFFN);
return retval;
}
static unsigned int tnt_transfer_count(struct tnt4882_priv *tnt_priv)
{
unsigned int count = 0;
count |= tnt_readb(tnt_priv, CNT0) & 0xff;
count |= (tnt_readb(tnt_priv, CNT1) << 8) & 0xff00;
count |= (tnt_readb(tnt_priv, CNT2) << 16) & 0xff0000;
count |= (tnt_readb(tnt_priv, CNT3) << 24) & 0xff000000;
// return two's complement
return -count;
};
static int write_wait(struct gpib_board *board, struct tnt4882_priv *tnt_priv,
int wait_for_done, int send_commands)
{
struct nec7210_priv *nec_priv = &tnt_priv->nec7210_priv;
if (wait_event_interruptible(board->wait,
(!wait_for_done && fifo_space_available(tnt_priv)) ||
fifo_xfer_done(tnt_priv) ||
test_bit(BUS_ERROR_BN, &nec_priv->state) ||
test_bit(DEV_CLEAR_BN, &nec_priv->state) ||
test_bit(TIMO_NUM, &board->status)))
return -ERESTARTSYS;
if (test_bit(TIMO_NUM, &board->status))
return -ETIMEDOUT;
if (test_and_clear_bit(BUS_ERROR_BN, &nec_priv->state))
return (send_commands) ? -ENOTCONN : -ECOMM;
if (test_bit(DEV_CLEAR_BN, &nec_priv->state))
return -EINTR;
return 0;
}
static int generic_write(struct gpib_board *board, u8 *buffer, size_t length,
int send_eoi, int send_commands, size_t *bytes_written)
{
size_t count = 0;
ssize_t retval = 0;
struct tnt4882_priv *tnt_priv = board->private_data;
struct nec7210_priv *nec_priv = &tnt_priv->nec7210_priv;
unsigned int bits;
s32 hw_count;
unsigned long flags;
*bytes_written = 0;
// FIXME: really, DEV_CLEAR_BN should happen elsewhere to prevent race
clear_bit(DEV_CLEAR_BN, &nec_priv->state);
nec7210_set_reg_bits(nec_priv, IMR1, HR_ERRIE, HR_ERRIE);
if (nec_priv->type != TNT4882 && nec_priv->type != TNT5004)
nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAO, HR_DMAO);
else
nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAO, 0);
tnt_writeb(tnt_priv, RESET_FIFO, CMDR);
udelay(1);
bits = TNT_B_16BIT;
if (send_eoi) {
bits |= TNT_CCEN;
if (nec_priv->type != TNT4882 && nec_priv->type != TNT5004)
tnt_writeb(tnt_priv, AUX_SEOI, CCR);
}
if (send_commands)
bits |= TNT_COMMAND;
tnt_writeb(tnt_priv, bits, CFG);
// load 2's complement of count into hardware counters
hw_count = -length;
tnt_writeb(tnt_priv, hw_count & 0xff, CNT0);
tnt_writeb(tnt_priv, (hw_count >> 8) & 0xff, CNT1);
tnt_writeb(tnt_priv, (hw_count >> 16) & 0xff, CNT2);
tnt_writeb(tnt_priv, (hw_count >> 24) & 0xff, CNT3);
tnt_writeb(tnt_priv, GO, CMDR);
udelay(1);
spin_lock_irqsave(&board->spinlock, flags);
tnt_priv->imr3_bits |= HR_DONE;
tnt_writeb(tnt_priv, tnt_priv->imr3_bits, IMR3);
spin_unlock_irqrestore(&board->spinlock, flags);
while (count < length) {
// wait until byte is ready to be sent
retval = write_wait(board, tnt_priv, 0, send_commands);
if (retval < 0)
break;
if (fifo_xfer_done(tnt_priv))
break;
spin_lock_irqsave(&board->spinlock, flags);
while (fifo_space_available(tnt_priv) && count < length) {
u16 word;
word = buffer[count++] & 0xff;
if (count < length)
word |= (buffer[count++] << 8) & 0xff00;
iowrite16(word, nec_priv->mmiobase + FIFOB);
}
// avoid unnecessary HR_NFF interrupts
// tnt_priv->imr3_bits |= HR_NFF;
// tnt_writeb(tnt_priv, tnt_priv->imr3_bits, IMR3);
spin_unlock_irqrestore(&board->spinlock, flags);
if (need_resched())
schedule();
}
// wait last byte has been sent
if (retval == 0)
retval = write_wait(board, tnt_priv, 1, send_commands);
tnt_writeb(tnt_priv, STOP, CMDR);
udelay(1);
nec7210_set_reg_bits(nec_priv, IMR1, HR_ERR, 0x0);
nec7210_set_reg_bits(nec_priv, IMR2, HR_DMAO, 0x0);
/*
* force handling of any interrupts that happened
* while they were masked (this appears to be needed)
*/
tnt4882_internal_interrupt(board);
*bytes_written = length - tnt_transfer_count(tnt_priv);
return retval;
}
static int tnt4882_accel_write(struct gpib_board *board, u8 *buffer,
size_t length, int send_eoi, size_t *bytes_written)
{
return generic_write(board, buffer, length, send_eoi, 0, bytes_written);
}
static int tnt4882_command(struct gpib_board *board, u8 *buffer, size_t length,
size_t *bytes_written)
{
return generic_write(board, buffer, length, 0, 1, bytes_written);
}
static irqreturn_t tnt4882_internal_interrupt(struct gpib_board *board)
{
struct tnt4882_priv *priv = board->private_data;
int isr0_bits, isr3_bits, imr3_bits;
unsigned long flags;
spin_lock_irqsave(&board->spinlock, flags);
nec7210_interrupt(board, &priv->nec7210_priv);
isr0_bits = tnt_readb(priv, ISR0);
isr3_bits = tnt_readb(priv, ISR3);
imr3_bits = priv->imr3_bits;
if (isr0_bits & TNT_IFCI_BIT)
push_gpib_event(board, EVENT_IFC);
// XXX don't need this wakeup, one below should do?
// wake_up_interruptible(&board->wait);
if (isr3_bits & HR_NFF)
priv->imr3_bits &= ~HR_NFF;
if (isr3_bits & HR_NEF)
priv->imr3_bits &= ~HR_NEF;
if (isr3_bits & HR_DONE)
priv->imr3_bits &= ~HR_DONE;
if (isr3_bits & (HR_INTR | HR_TLCI)) {
dev_dbg(board->gpib_dev, "minor %i isr0 0x%x imr0 0x%x isr3 0x%x imr3 0x%x\n",
board->minor, isr0_bits, priv->imr0_bits, isr3_bits, imr3_bits);
tnt_writeb(priv, priv->imr3_bits, IMR3);
wake_up_interruptible(&board->wait);
}
spin_unlock_irqrestore(&board->spinlock, flags);
return IRQ_HANDLED;
}
static irqreturn_t tnt4882_interrupt(int irq, void *arg)
{
return tnt4882_internal_interrupt(arg);
}
// wrappers for interface functions
static int tnt4882_read(struct gpib_board *board, u8 *buffer, size_t length, int *end,
size_t *bytes_read)
{
struct tnt4882_priv *priv = board->private_data;
struct nec7210_priv *nec_priv = &priv->nec7210_priv;
int retval;
int dummy;
retval = nec7210_read(board, &priv->nec7210_priv, buffer, length, end, bytes_read);
if (retval < 0) { // force immediate holdoff
write_byte(nec_priv, AUX_HLDI, AUXMR);
set_bit(RFD_HOLDOFF_BN, &nec_priv->state);
nec7210_read_data_in(board, nec_priv, &dummy);
}
return retval;
}
static int tnt4882_write(struct gpib_board *board, u8 *buffer, size_t length, int send_eoi,
size_t *bytes_written)
{
struct tnt4882_priv *priv = board->private_data;
return nec7210_write(board, &priv->nec7210_priv, buffer, length, send_eoi, bytes_written);
}
static int tnt4882_command_unaccel(struct gpib_board *board, u8 *buffer,
size_t length, size_t *bytes_written)
{
struct tnt4882_priv *priv = board->private_data;
return nec7210_command(board, &priv->nec7210_priv, buffer, length, bytes_written);
}
static int tnt4882_take_control(struct gpib_board *board, int synchronous)
{
struct tnt4882_priv *priv = board->private_data;
return nec7210_take_control(board, &priv->nec7210_priv, synchronous);
}
static int tnt4882_go_to_standby(struct gpib_board *board)
{
struct tnt4882_priv *priv = board->private_data;
return nec7210_go_to_standby(board, &priv->nec7210_priv);
}
static int tnt4882_request_system_control(struct gpib_board *board, int request_control)
{
struct tnt4882_priv *priv = board->private_data;
int retval;
if (request_control) {
tnt_writeb(priv, SETSC, CMDR);
udelay(1);
}
retval = nec7210_request_system_control(board, &priv->nec7210_priv, request_control);
if (!request_control) {
tnt_writeb(priv, CLRSC, CMDR);
udelay(1);
}
return retval;
}
static void tnt4882_interface_clear(struct gpib_board *board, int assert)
{
struct tnt4882_priv *priv = board->private_data;
nec7210_interface_clear(board, &priv->nec7210_priv, assert);
}
static void tnt4882_remote_enable(struct gpib_board *board, int enable)
{
struct tnt4882_priv *priv = board->private_data;
nec7210_remote_enable(board, &priv->nec7210_priv, enable);
}
static int tnt4882_enable_eos(struct gpib_board *board, u8 eos_byte, int compare_8_bits)
{
struct tnt4882_priv *priv = board->private_data;
return nec7210_enable_eos(board, &priv->nec7210_priv, eos_byte, compare_8_bits);
}
static void tnt4882_disable_eos(struct gpib_board *board)
{
struct tnt4882_priv *priv = board->private_data;
nec7210_disable_eos(board, &priv->nec7210_priv);
}
static unsigned int tnt4882_update_status(struct gpib_board *board, unsigned int clear_mask)
{
unsigned long flags;
u8 line_status;
struct tnt4882_priv *priv = board->private_data;
spin_lock_irqsave(&board->spinlock, flags);
board->status &= ~clear_mask;
nec7210_update_status_nolock(board, &priv->nec7210_priv);
/* set / clear SRQ state since it is not cleared by interrupt */
line_status = tnt_readb(priv, BSR);
if (line_status & BCSR_SRQ_BIT)
set_bit(SRQI_NUM, &board->status);
else
clear_bit(SRQI_NUM, &board->status);
spin_unlock_irqrestore(&board->spinlock, flags);
return board->status;
}
static int tnt4882_primary_address(struct gpib_board *board, unsigned int address)
{
struct tnt4882_priv *priv = board->private_data;
return nec7210_primary_address(board, &priv->nec7210_priv, address);
}
static int tnt4882_secondary_address(struct gpib_board *board, unsigned int address, int enable)
{
struct tnt4882_priv *priv = board->private_data;
return nec7210_secondary_address(board, &priv->nec7210_priv, address, enable);
}
static int tnt4882_parallel_poll(struct gpib_board *board, u8 *result)
{
struct tnt4882_priv *tnt_priv = board->private_data;
if (tnt_priv->nec7210_priv.type != NEC7210) {
tnt_priv->auxg_bits |= RPP2_BIT;
write_byte(&tnt_priv->nec7210_priv, tnt_priv->auxg_bits, AUXMR);
udelay(2); // FIXME use parallel poll timeout
*result = read_byte(&tnt_priv->nec7210_priv, CPTR);
tnt_priv->auxg_bits &= ~RPP2_BIT;
write_byte(&tnt_priv->nec7210_priv, tnt_priv->auxg_bits, AUXMR);
return 0;
} else {
return nec7210_parallel_poll(board, &tnt_priv->nec7210_priv, result);
}
}
static void tnt4882_parallel_poll_configure(struct gpib_board *board, u8 config)
{
struct tnt4882_priv *priv = board->private_data;
if (priv->nec7210_priv.type == TNT5004) {
/* configure locally */
write_byte(&priv->nec7210_priv, AUXRI | 0x4, AUXMR);
if (config)
/* set response + clear sense */
write_byte(&priv->nec7210_priv, PPR | config, AUXMR);
else
/* disable ppoll */
write_byte(&priv->nec7210_priv, PPR | 0x10, AUXMR);
} else {
nec7210_parallel_poll_configure(board, &priv->nec7210_priv, config);
}
}
static void tnt4882_parallel_poll_response(struct gpib_board *board, int ist)
{
struct tnt4882_priv *priv = board->private_data;
nec7210_parallel_poll_response(board, &priv->nec7210_priv, ist);
}
/*
* this is just used by the old nec7210 isa interfaces, the newer
* boards use tnt4882_serial_poll_response2
*/
static void tnt4882_serial_poll_response(struct gpib_board *board, u8 status)
{
struct tnt4882_priv *priv = board->private_data;
nec7210_serial_poll_response(board, &priv->nec7210_priv, status);
}
static void tnt4882_serial_poll_response2(struct gpib_board *board, u8 status,
int new_reason_for_service)
{
struct tnt4882_priv *priv = board->private_data;
unsigned long flags;
const int MSS = status & request_service_bit;
const int reqt = MSS && new_reason_for_service;
const int reqf = MSS == 0;
spin_lock_irqsave(&board->spinlock, flags);
if (reqt) {
priv->nec7210_priv.srq_pending = 1;
clear_bit(SPOLL_NUM, &board->status);
} else {
if (reqf)
priv->nec7210_priv.srq_pending = 0;
}
if (reqt)
/*
* It may seem like a race to issue reqt before updating
* the status byte, but it is not. The chip does not
* issue the reqt until the SPMR is written to at
* a later time.
*/
write_byte(&priv->nec7210_priv, AUX_REQT, AUXMR);
else if (reqf)
write_byte(&priv->nec7210_priv, AUX_REQF, AUXMR);
/*
* We need to always zero bit 6 of the status byte before writing it to
* the SPMR to insure we are using
* serial poll mode SP1, and not accidentally triggering mode SP3.
*/
write_byte(&priv->nec7210_priv, status & ~request_service_bit, SPMR);
spin_unlock_irqrestore(&board->spinlock, flags);
}
static u8 tnt4882_serial_poll_status(struct gpib_board *board)
{
struct tnt4882_priv *priv = board->private_data;
return nec7210_serial_poll_status(board, &priv->nec7210_priv);
}
static void tnt4882_return_to_local(struct gpib_board *board)
{
struct tnt4882_priv *priv = board->private_data;
nec7210_return_to_local(board, &priv->nec7210_priv);
}
static void tnt4882_board_reset(struct tnt4882_priv *tnt_priv, struct gpib_board *board)
{
struct nec7210_priv *nec_priv = &tnt_priv->nec7210_priv;
tnt_priv->imr0_bits = 0;
tnt_writeb(tnt_priv, tnt_priv->imr0_bits, IMR0);
tnt_priv->imr3_bits = 0;
tnt_writeb(tnt_priv, tnt_priv->imr3_bits, IMR3);
tnt_readb(tnt_priv, IMR0);
tnt_readb(tnt_priv, IMR3);
nec7210_board_reset(nec_priv, board);
}
static int tnt4882_allocate_private(struct gpib_board *board)
{
struct tnt4882_priv *tnt_priv;
board->private_data = kzalloc_obj(struct tnt4882_priv);
if (!board->private_data)
return -ENOMEM;
tnt_priv = board->private_data;
init_nec7210_private(&tnt_priv->nec7210_priv);
return 0;
}
static void tnt4882_free_private(struct gpib_board *board)
{
kfree(board->private_data);
board->private_data = NULL;
}
static void tnt4882_init(struct tnt4882_priv *tnt_priv, const struct gpib_board *board)
{
struct nec7210_priv *nec_priv = &tnt_priv->nec7210_priv;
/* Turbo488 software reset */
tnt_writeb(tnt_priv, SOFT_RESET, CMDR);
udelay(1);
// turn off one-chip mode
tnt_writeb(tnt_priv, NODMA, HSSEL);
tnt_writeb(tnt_priv, 0, ACCWR);
// make sure we are in 7210 mode
tnt_writeb(tnt_priv, AUX_7210, AUXCR);
udelay(1);
// registers might be swapped, so write it to the swapped address too
tnt_writeb(tnt_priv, AUX_7210, SWAPPED_AUXCR);
udelay(1);
// turn on one-chip mode
if (nec_priv->type == TNT4882 || nec_priv->type == TNT5004)
tnt_writeb(tnt_priv, NODMA | TNT_ONE_CHIP_BIT, HSSEL);
else
tnt_writeb(tnt_priv, NODMA, HSSEL);
nec7210_board_reset(nec_priv, board);
// read-clear isr0
tnt_readb(tnt_priv, ISR0);
// enable passing of nat4882 interrupts
tnt_priv->imr3_bits = HR_TLCI;
tnt_writeb(tnt_priv, tnt_priv->imr3_bits, IMR3);
// enable interrupt
tnt_writeb(tnt_priv, 0x1, INTRT);
// force immediate holdoff
write_byte(&tnt_priv->nec7210_priv, AUX_HLDI, AUXMR);
set_bit(RFD_HOLDOFF_BN, &nec_priv->state);
tnt_priv->auxg_bits = AUXRG | NTNL_BIT;
write_byte(&tnt_priv->nec7210_priv, tnt_priv->auxg_bits, AUXMR);
nec7210_board_online(nec_priv, board);
// enable interface clear interrupt for event queue
tnt_priv->imr0_bits = TNT_IMR0_ALWAYS_BITS | TNT_ATNI_BIT | TNT_IFCIE_BIT;
tnt_writeb(tnt_priv, tnt_priv->imr0_bits, IMR0);
}
static int ni_pci_attach(struct gpib_board *board, const struct gpib_board_config *config)
{
struct tnt4882_priv *tnt_priv;
struct nec7210_priv *nec_priv;
int isr_flags = IRQF_SHARED;
int retval;
struct mite_struct *mite;
board->status = 0;
retval = tnt4882_allocate_private(board);
if (retval)
return retval;
tnt_priv = board->private_data;
nec_priv = &tnt_priv->nec7210_priv;
nec_priv->type = TNT4882;
nec_priv->read_byte = nec7210_locking_iomem_read_byte;
nec_priv->write_byte = nec7210_locking_iomem_write_byte;
nec_priv->offset = atgpib_reg_offset;
if (!mite_devices)
return -ENODEV;
for (mite = mite_devices; mite; mite = mite->next) {
short found_board;
if (mite->used)
continue;
if (config->pci_bus >= 0 && config->pci_bus != mite->pcidev->bus->number)
continue;
if (config->pci_slot >= 0 && config->pci_slot != PCI_SLOT(mite->pcidev->devfn))
continue;
switch (mite_device_id(mite)) {
case PCI_DEVICE_ID_NI_GPIB:
case PCI_DEVICE_ID_NI_GPIB_PLUS:
case PCI_DEVICE_ID_NI_GPIB_PLUS2:
case PCI_DEVICE_ID_NI_PXIGPIB:
case PCI_DEVICE_ID_NI_PMCGPIB:
case PCI_DEVICE_ID_NI_PCIEGPIB:
case PCI_DEVICE_ID_NI_PCIE2GPIB:
// support for Measurement Computing PCI-488
case PCI_DEVICE_ID_MC_PCI488:
case PCI_DEVICE_ID_CEC_NI_GPIB:
found_board = 1;
break;
default:
found_board = 0;
break;
}
if (found_board)
break;
}
if (!mite)
return -ENODEV;
tnt_priv->mite = mite;
retval = mite_setup(tnt_priv->mite);
if (retval < 0)
return retval;
nec_priv->mmiobase = tnt_priv->mite->daq_io_addr;
// get irq
retval = request_irq(mite_irq(tnt_priv->mite), tnt4882_interrupt, isr_flags, "ni-pci-gpib",
board);
if (retval) {
dev_err(board->gpib_dev, "failed to obtain pci irq %d\n", mite_irq(tnt_priv->mite));
return retval;
}
tnt_priv->irq = mite_irq(tnt_priv->mite);
// TNT5004 detection
switch (tnt_readb(tnt_priv, CSR) & 0xf0) {
case 0x30:
nec_priv->type = TNT4882;
break;
case 0x40:
nec_priv->type = TNT5004;
break;
}
tnt4882_init(tnt_priv, board);
return 0;
}
static void ni_pci_detach(struct gpib_board *board)
{
struct tnt4882_priv *tnt_priv = board->private_data;
struct nec7210_priv *nec_priv;
if (tnt_priv) {
nec_priv = &tnt_priv->nec7210_priv;
if (nec_priv->mmiobase)
tnt4882_board_reset(tnt_priv, board);
if (tnt_priv->irq)
free_irq(tnt_priv->irq, board);
if (tnt_priv->mite)
mite_unsetup(tnt_priv->mite);
}
tnt4882_free_private(board);
}
static int ni_isapnp_find(struct pnp_dev **dev)
{
*dev = pnp_find_dev(NULL, ISAPNP_VENDOR_ID_NI,
ISAPNP_FUNCTION(ISAPNP_ID_NI_ATGPIB_TNT), NULL);
if (!*dev || !(*dev)->card)
return -ENODEV;
if (pnp_device_attach(*dev) < 0)
return -EBUSY;
if (pnp_activate_dev(*dev) < 0) {
pnp_device_detach(*dev);
return -EAGAIN;
}
if (!pnp_port_valid(*dev, 0) || !pnp_irq_valid(*dev, 0)) {
pnp_device_detach(*dev);
return -EINVAL;
}
return 0;
}
static int ni_isa_attach_common(struct gpib_board *board, const struct gpib_board_config *config,
enum nec7210_chipset chipset)
{
struct tnt4882_priv *tnt_priv;
struct nec7210_priv *nec_priv;
int isr_flags = 0;
u32 iobase;
int irq;
int retval;
board->status = 0;
retval = tnt4882_allocate_private(board);
if (retval)
return retval;
tnt_priv = board->private_data;
nec_priv = &tnt_priv->nec7210_priv;
nec_priv->type = chipset;
nec_priv->read_byte = nec7210_locking_ioport_read_byte;
nec_priv->write_byte = nec7210_locking_ioport_write_byte;
nec_priv->offset = atgpib_reg_offset;
// look for plug-n-play board
if (config->ibbase == 0) {
struct pnp_dev *dev;
retval = ni_isapnp_find(&dev);
if (retval < 0)
return retval;
tnt_priv->pnp_dev = dev;
iobase = pnp_port_start(dev, 0);
irq = pnp_irq(dev, 0);
} else {
iobase = config->ibbase;
irq = config->ibirq;
}
// allocate ioports
if (!request_region(iobase, atgpib_iosize, "atgpib"))
return -EBUSY;
nec_priv->mmiobase = ioport_map(iobase, atgpib_iosize);
if (!nec_priv->mmiobase)
return -EBUSY;
// get irq
retval = request_irq(irq, tnt4882_interrupt, isr_flags, "atgpib", board);
if (retval) {
dev_err(board->gpib_dev, "failed to request ISA irq %d\n", irq);
return retval;
}
tnt_priv->irq = irq;
tnt4882_init(tnt_priv, board);
return 0;
}
static int ni_tnt_isa_attach(struct gpib_board *board, const struct gpib_board_config *config)
{
return ni_isa_attach_common(board, config, TNT4882);
}
static int ni_nat4882_isa_attach(struct gpib_board *board, const struct gpib_board_config *config)
{
return ni_isa_attach_common(board, config, NAT4882);
}
static int ni_nec_isa_attach(struct gpib_board *board, const struct gpib_board_config *config)
{
return ni_isa_attach_common(board, config, NEC7210);
}
static void ni_isa_detach(struct gpib_board *board)
{
struct tnt4882_priv *tnt_priv = board->private_data;
struct nec7210_priv *nec_priv;
if (tnt_priv) {
nec_priv = &tnt_priv->nec7210_priv;
if (nec_priv->iobase)
tnt4882_board_reset(tnt_priv, board);
if (tnt_priv->irq)
free_irq(tnt_priv->irq, board);
if (nec_priv->mmiobase)
ioport_unmap(nec_priv->mmiobase);
if (nec_priv->iobase)
release_region(nec_priv->iobase, atgpib_iosize);
if (tnt_priv->pnp_dev)
pnp_device_detach(tnt_priv->pnp_dev);
}
tnt4882_free_private(board);
}
static int tnt4882_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
{
return 0;
}
static struct gpib_interface ni_pci_interface = {
.name = "ni_pci",
.attach = ni_pci_attach,
.detach = ni_pci_detach,
.read = tnt4882_accel_read,
.write = tnt4882_accel_write,
.command = tnt4882_command,
.take_control = tnt4882_take_control,
.go_to_standby = tnt4882_go_to_standby,
.request_system_control = tnt4882_request_system_control,
.interface_clear = tnt4882_interface_clear,
.remote_enable = tnt4882_remote_enable,
.enable_eos = tnt4882_enable_eos,
.disable_eos = tnt4882_disable_eos,
.parallel_poll = tnt4882_parallel_poll,
.parallel_poll_configure = tnt4882_parallel_poll_configure,
.parallel_poll_response = tnt4882_parallel_poll_response,
.local_parallel_poll_mode = NULL, // XXX
.line_status = tnt4882_line_status,
.update_status = tnt4882_update_status,
.primary_address = tnt4882_primary_address,
.secondary_address = tnt4882_secondary_address,
.serial_poll_response2 = tnt4882_serial_poll_response2,
.serial_poll_status = tnt4882_serial_poll_status,
.t1_delay = tnt4882_t1_delay,
.return_to_local = tnt4882_return_to_local,
};
static struct gpib_interface ni_pci_accel_interface = {
.name = "ni_pci_accel",
.attach = ni_pci_attach,
.detach = ni_pci_detach,
.read = tnt4882_accel_read,
.write = tnt4882_accel_write,
.command = tnt4882_command,
.take_control = tnt4882_take_control,
.go_to_standby = tnt4882_go_to_standby,
.request_system_control = tnt4882_request_system_control,
.interface_clear = tnt4882_interface_clear,
.remote_enable = tnt4882_remote_enable,
.enable_eos = tnt4882_enable_eos,
.disable_eos = tnt4882_disable_eos,
.parallel_poll = tnt4882_parallel_poll,
.parallel_poll_configure = tnt4882_parallel_poll_configure,
.parallel_poll_response = tnt4882_parallel_poll_response,
.local_parallel_poll_mode = NULL, // XXX
.line_status = tnt4882_line_status,
.update_status = tnt4882_update_status,
.primary_address = tnt4882_primary_address,
.secondary_address = tnt4882_secondary_address,
.serial_poll_response2 = tnt4882_serial_poll_response2,
.serial_poll_status = tnt4882_serial_poll_status,
.t1_delay = tnt4882_t1_delay,
.return_to_local = tnt4882_return_to_local,
};
static struct gpib_interface ni_isa_interface = {
.name = "ni_isa",
.attach = ni_tnt_isa_attach,
.detach = ni_isa_detach,
.read = tnt4882_accel_read,
.write = tnt4882_accel_write,
.command = tnt4882_command,
.take_control = tnt4882_take_control,
.go_to_standby = tnt4882_go_to_standby,
.request_system_control = tnt4882_request_system_control,
.interface_clear = tnt4882_interface_clear,
.remote_enable = tnt4882_remote_enable,
.enable_eos = tnt4882_enable_eos,
.disable_eos = tnt4882_disable_eos,
.parallel_poll = tnt4882_parallel_poll,
.parallel_poll_configure = tnt4882_parallel_poll_configure,
.parallel_poll_response = tnt4882_parallel_poll_response,
.local_parallel_poll_mode = NULL, // XXX
.line_status = tnt4882_line_status,
.update_status = tnt4882_update_status,
.primary_address = tnt4882_primary_address,
.secondary_address = tnt4882_secondary_address,
.serial_poll_response2 = tnt4882_serial_poll_response2,
.serial_poll_status = tnt4882_serial_poll_status,
.t1_delay = tnt4882_t1_delay,
.return_to_local = tnt4882_return_to_local,
};
static struct gpib_interface ni_nat4882_isa_interface = {
.name = "ni_nat4882_isa",
.attach = ni_nat4882_isa_attach,
.detach = ni_isa_detach,
.read = tnt4882_read,
.write = tnt4882_write,
.command = tnt4882_command_unaccel,
.take_control = tnt4882_take_control,
.go_to_standby = tnt4882_go_to_standby,
.request_system_control = tnt4882_request_system_control,
.interface_clear = tnt4882_interface_clear,
.remote_enable = tnt4882_remote_enable,
.enable_eos = tnt4882_enable_eos,
.disable_eos = tnt4882_disable_eos,
.parallel_poll = tnt4882_parallel_poll,
.parallel_poll_configure = tnt4882_parallel_poll_configure,
.parallel_poll_response = tnt4882_parallel_poll_response,
.local_parallel_poll_mode = NULL, // XXX
.line_status = tnt4882_line_status,
.update_status = tnt4882_update_status,
.primary_address = tnt4882_primary_address,
.secondary_address = tnt4882_secondary_address,
.serial_poll_response2 = tnt4882_serial_poll_response2,
.serial_poll_status = tnt4882_serial_poll_status,
.t1_delay = tnt4882_t1_delay,
.return_to_local = tnt4882_return_to_local,
};
static struct gpib_interface ni_nec_isa_interface = {
.name = "ni_nec_isa",
.attach = ni_nec_isa_attach,
.detach = ni_isa_detach,
.read = tnt4882_read,
.write = tnt4882_write,
.command = tnt4882_command_unaccel,
.take_control = tnt4882_take_control,
.go_to_standby = tnt4882_go_to_standby,
.request_system_control = tnt4882_request_system_control,
.interface_clear = tnt4882_interface_clear,
.remote_enable = tnt4882_remote_enable,
.enable_eos = tnt4882_enable_eos,
.disable_eos = tnt4882_disable_eos,
.parallel_poll = tnt4882_parallel_poll,
.parallel_poll_configure = tnt4882_parallel_poll_configure,
.parallel_poll_response = tnt4882_parallel_poll_response,
.local_parallel_poll_mode = NULL, // XXX
.line_status = NULL,
.update_status = tnt4882_update_status,
.primary_address = tnt4882_primary_address,
.secondary_address = tnt4882_secondary_address,
.serial_poll_response = tnt4882_serial_poll_response,
.serial_poll_status = tnt4882_serial_poll_status,
.t1_delay = tnt4882_t1_delay,
.return_to_local = tnt4882_return_to_local,
};
static struct gpib_interface ni_isa_accel_interface = {
.name = "ni_isa_accel",
.attach = ni_tnt_isa_attach,
.detach = ni_isa_detach,
.read = tnt4882_accel_read,
.write = tnt4882_accel_write,
.command = tnt4882_command,
.take_control = tnt4882_take_control,
.go_to_standby = tnt4882_go_to_standby,
.request_system_control = tnt4882_request_system_control,
.interface_clear = tnt4882_interface_clear,
.remote_enable = tnt4882_remote_enable,
.enable_eos = tnt4882_enable_eos,
.disable_eos = tnt4882_disable_eos,
.parallel_poll = tnt4882_parallel_poll,
.parallel_poll_configure = tnt4882_parallel_poll_configure,
.parallel_poll_response = tnt4882_parallel_poll_response,
.local_parallel_poll_mode = NULL, // XXX
.line_status = tnt4882_line_status,
.update_status = tnt4882_update_status,
.primary_address = tnt4882_primary_address,
.secondary_address = tnt4882_secondary_address,
.serial_poll_response2 = tnt4882_serial_poll_response2,
.serial_poll_status = tnt4882_serial_poll_status,
.t1_delay = tnt4882_t1_delay,
.return_to_local = tnt4882_return_to_local,
};
static struct gpib_interface ni_nat4882_isa_accel_interface = {
.name = "ni_nat4882_isa_accel",
.attach = ni_nat4882_isa_attach,
.detach = ni_isa_detach,
.read = tnt4882_accel_read,
.write = tnt4882_accel_write,
.command = tnt4882_command_unaccel,
.take_control = tnt4882_take_control,
.go_to_standby = tnt4882_go_to_standby,
.request_system_control = tnt4882_request_system_control,
.interface_clear = tnt4882_interface_clear,
.remote_enable = tnt4882_remote_enable,
.enable_eos = tnt4882_enable_eos,
.disable_eos = tnt4882_disable_eos,
.parallel_poll = tnt4882_parallel_poll,
.parallel_poll_configure = tnt4882_parallel_poll_configure,
.parallel_poll_response = tnt4882_parallel_poll_response,
.local_parallel_poll_mode = NULL, // XXX
.line_status = tnt4882_line_status,
.update_status = tnt4882_update_status,
.primary_address = tnt4882_primary_address,
.secondary_address = tnt4882_secondary_address,
.serial_poll_response2 = tnt4882_serial_poll_response2,
.serial_poll_status = tnt4882_serial_poll_status,
.t1_delay = tnt4882_t1_delay,
.return_to_local = tnt4882_return_to_local,
};
static struct gpib_interface ni_nec_isa_accel_interface = {
.name = "ni_nec_isa_accel",
.attach = ni_nec_isa_attach,
.detach = ni_isa_detach,
.read = tnt4882_accel_read,
.write = tnt4882_accel_write,
.command = tnt4882_command_unaccel,
.take_control = tnt4882_take_control,
.go_to_standby = tnt4882_go_to_standby,
.request_system_control = tnt4882_request_system_control,
.interface_clear = tnt4882_interface_clear,
.remote_enable = tnt4882_remote_enable,
.enable_eos = tnt4882_enable_eos,
.disable_eos = tnt4882_disable_eos,
.parallel_poll = tnt4882_parallel_poll,
.parallel_poll_configure = tnt4882_parallel_poll_configure,
.parallel_poll_response = tnt4882_parallel_poll_response,
.local_parallel_poll_mode = NULL, // XXX
.line_status = NULL,
.update_status = tnt4882_update_status,
.primary_address = tnt4882_primary_address,
.secondary_address = tnt4882_secondary_address,
.serial_poll_response = tnt4882_serial_poll_response,
.serial_poll_status = tnt4882_serial_poll_status,
.t1_delay = tnt4882_t1_delay,
.return_to_local = tnt4882_return_to_local,
};
static const struct pci_device_id tnt4882_pci_table[] = {
{PCI_DEVICE(PCI_VENDOR_ID_NATINST, PCI_DEVICE_ID_NI_GPIB)},
{PCI_DEVICE(PCI_VENDOR_ID_NATINST, PCI_DEVICE_ID_NI_GPIB_PLUS)},
{PCI_DEVICE(PCI_VENDOR_ID_NATINST, PCI_DEVICE_ID_NI_GPIB_PLUS2)},
{PCI_DEVICE(PCI_VENDOR_ID_NATINST, PCI_DEVICE_ID_NI_PXIGPIB)},
{PCI_DEVICE(PCI_VENDOR_ID_NATINST, PCI_DEVICE_ID_NI_PMCGPIB)},
{PCI_DEVICE(PCI_VENDOR_ID_NATINST, PCI_DEVICE_ID_NI_PCIEGPIB)},
{PCI_DEVICE(PCI_VENDOR_ID_NATINST, PCI_DEVICE_ID_NI_PCIE2GPIB)},
// support for Measurement Computing PCI-488
{PCI_DEVICE(PCI_VENDOR_ID_NATINST, PCI_DEVICE_ID_MC_PCI488)},
{PCI_DEVICE(PCI_VENDOR_ID_NATINST, PCI_DEVICE_ID_CEC_NI_GPIB)},
{ 0 }
};
MODULE_DEVICE_TABLE(pci, tnt4882_pci_table);
static struct pci_driver tnt4882_pci_driver = {
.name = DRV_NAME,
.id_table = tnt4882_pci_table,
.probe = &tnt4882_pci_probe
};
#if 0
/* unused, will be needed when the driver is turned into a pnp_driver */
static const struct pnp_device_id tnt4882_pnp_table[] = {
{.id = "NICC601"},
{.id = ""}
};
MODULE_DEVICE_TABLE(pnp, tnt4882_pnp_table);
#endif
#ifdef CONFIG_GPIB_PCMCIA
static struct gpib_interface ni_pcmcia_interface;
static struct gpib_interface ni_pcmcia_accel_interface;
static int __init init_ni_gpib_cs(void);
static void __exit exit_ni_gpib_cs(void);
#endif
static int __init tnt4882_init_module(void)
{
int result;
result = pci_register_driver(&tnt4882_pci_driver);
if (result) {
pr_err("pci_register_driver failed: error = %d\n", result);
return result;
}
result = gpib_register_driver(&ni_isa_interface, THIS_MODULE);
if (result) {
pr_err("gpib_register_driver failed: error = %d\n", result);
goto err_isa;
}
result = gpib_register_driver(&ni_isa_accel_interface, THIS_MODULE);
if (result) {
pr_err("gpib_register_driver failed: error = %d\n", result);
goto err_isa_accel;
}
result = gpib_register_driver(&ni_nat4882_isa_interface, THIS_MODULE);
if (result) {
pr_err("gpib_register_driver failed: error = %d\n", result);
goto err_nat4882_isa;
}
result = gpib_register_driver(&ni_nat4882_isa_accel_interface, THIS_MODULE);
if (result) {
pr_err("gpib_register_driver failed: error = %d\n", result);
goto err_nat4882_isa_accel;
}
result = gpib_register_driver(&ni_nec_isa_interface, THIS_MODULE);
if (result) {
pr_err("gpib_register_driver failed: error = %d\n", result);
goto err_nec_isa;
}
result = gpib_register_driver(&ni_nec_isa_accel_interface, THIS_MODULE);
if (result) {
pr_err("gpib_register_driver failed: error = %d\n", result);
goto err_nec_isa_accel;
}
result = gpib_register_driver(&ni_pci_interface, THIS_MODULE);
if (result) {
pr_err("gpib_register_driver failed: error = %d\n", result);
goto err_pci;
}
result = gpib_register_driver(&ni_pci_accel_interface, THIS_MODULE);
if (result) {
pr_err("gpib_register_driver failed: error = %d\n", result);
goto err_pci_accel;
}
#ifdef CONFIG_GPIB_PCMCIA
result = gpib_register_driver(&ni_pcmcia_interface, THIS_MODULE);
if (result) {
pr_err("gpib_register_driver failed: error = %d\n", result);
goto err_pcmcia;
}
result = gpib_register_driver(&ni_pcmcia_accel_interface, THIS_MODULE);
if (result) {
pr_err("gpib_register_driver failed: error = %d\n", result);
goto err_pcmcia_accel;
}
result = init_ni_gpib_cs();
if (result) {
pr_err("pcmcia_register_driver failed: error = %d\n", result);
goto err_pcmcia_driver;
}
#endif
mite_init();
return 0;
#ifdef CONFIG_GPIB_PCMCIA
err_pcmcia_driver:
gpib_unregister_driver(&ni_pcmcia_accel_interface);
err_pcmcia_accel:
gpib_unregister_driver(&ni_pcmcia_interface);
err_pcmcia:
#endif
gpib_unregister_driver(&ni_pci_accel_interface);
err_pci_accel:
gpib_unregister_driver(&ni_pci_interface);
err_pci:
gpib_unregister_driver(&ni_nec_isa_accel_interface);
err_nec_isa_accel:
gpib_unregister_driver(&ni_nec_isa_interface);
err_nec_isa:
gpib_unregister_driver(&ni_nat4882_isa_accel_interface);
err_nat4882_isa_accel:
gpib_unregister_driver(&ni_nat4882_isa_interface);
err_nat4882_isa:
gpib_unregister_driver(&ni_isa_accel_interface);
err_isa_accel:
gpib_unregister_driver(&ni_isa_interface);
err_isa:
pci_unregister_driver(&tnt4882_pci_driver);
return result;
}
static void __exit tnt4882_exit_module(void)
{
gpib_unregister_driver(&ni_isa_interface);
gpib_unregister_driver(&ni_isa_accel_interface);
gpib_unregister_driver(&ni_nat4882_isa_interface);
gpib_unregister_driver(&ni_nat4882_isa_accel_interface);
gpib_unregister_driver(&ni_nec_isa_interface);
gpib_unregister_driver(&ni_nec_isa_accel_interface);
gpib_unregister_driver(&ni_pci_interface);
gpib_unregister_driver(&ni_pci_accel_interface);
#ifdef CONFIG_GPIB_PCMCIA
gpib_unregister_driver(&ni_pcmcia_interface);
gpib_unregister_driver(&ni_pcmcia_accel_interface);
exit_ni_gpib_cs();
#endif
mite_cleanup();
pci_unregister_driver(&tnt4882_pci_driver);
}
#ifdef CONFIG_GPIB_PCMCIA
#include <linux/kernel.h>
#include <linux/moduleparam.h>
#include <linux/ptrace.h>
#include <linux/timer.h>
#include <linux/io.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ds.h>
static int ni_gpib_config(struct pcmcia_device *link);
static void ni_gpib_release(struct pcmcia_device *link);
static void ni_pcmcia_detach(struct gpib_board *board);
/*
* A linked list of "instances" of the dummy device. Each actual
* PCMCIA card corresponds to one device instance, and is described
* by one dev_link_t structure (defined in ds.h).
*
* You may not want to use a linked list for this -- for example, the
* memory card driver uses an array of dev_link_t pointers, where minor
* device numbers are used to derive the corresponding array index.
*
* I think this dev_list is obsolete but the pointer is needed to keep
* the module instance for the ni_pcmcia_attach function.
*/
static struct pcmcia_device *curr_dev;
struct local_info_t {
struct pcmcia_device *p_dev;
struct gpib_board *dev;
int stop;
struct bus_operations *bus;
};
/*
* ni_gpib_probe() creates an "instance" of the driver, allocating
* local data structures for one device. The device is registered
* with Card Services.
*/
static int ni_gpib_probe(struct pcmcia_device *link)
{
struct local_info_t *info;
//struct struct gpib_board *dev;
/* Allocate space for private device-specific data */
info = kzalloc_obj(*info);
if (!info)
return -ENOMEM;
info->p_dev = link;
link->priv = info;
/*
* General socket configuration defaults can go here. In this
* client, we assume very little, and rely on the CIS for almost
* everything. In most clients, many details (i.e., number, sizes,
* and attributes of IO windows) are fixed by the nature of the
* device, and can be hard-wired here.
*/
link->config_flags = CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
/* Register with Card Services */
curr_dev = link;
return ni_gpib_config(link);
}
/*
* This deletes a driver "instance". The device is de-registered
* with Card Services. If it has been released, all local data
* structures are freed. Otherwise, the structures will be freed
* when the device is released.
*/
static void ni_gpib_remove(struct pcmcia_device *link)
{
struct local_info_t *info = link->priv;
//struct struct gpib_board *dev = info->dev;
if (info->dev)
ni_pcmcia_detach(info->dev);
ni_gpib_release(link);
//free_netdev(dev);
kfree(info);
}
static int ni_gpib_config_iteration(struct pcmcia_device *link, void *priv_data)
{
int retval;
retval = pcmcia_request_io(link);
if (retval != 0)
return retval;
return 0;
}
/*
* ni_gpib_config() is scheduled to run after a CARD_INSERTION event
* is received, to configure the PCMCIA socket, and to make the
* device available to the system.
*/
static int ni_gpib_config(struct pcmcia_device *link)
{
//struct local_info_t *info = link->priv;
//struct gpib_board *dev = info->dev;
int last_ret;
last_ret = pcmcia_loop_config(link, &ni_gpib_config_iteration, NULL);
if (last_ret) {
dev_warn(&link->dev, "no configuration found\n");
ni_gpib_release(link);
return last_ret;
}
last_ret = pcmcia_enable_device(link);
if (last_ret) {
ni_gpib_release(link);
return last_ret;
}
return 0;
} /* ni_gpib_config */
/*
* After a card is removed, ni_gpib_release() will unregister the
* device, and release the PCMCIA configuration. If the device is
* still open, this will be postponed until it is closed.
*/
static void ni_gpib_release(struct pcmcia_device *link)
{
pcmcia_disable_device(link);
} /* ni_gpib_release */
static int ni_gpib_suspend(struct pcmcia_device *link)
{
//struct local_info_t *info = link->priv;
//struct struct gpib_board *dev = info->dev;
if (link->open)
dev_warn(&link->dev, "Device still open\n");
//netif_device_detach(dev);
return 0;
}
static int ni_gpib_resume(struct pcmcia_device *link)
{
//struct local_info_t *info = link->priv;
//struct struct gpib_board *dev = info->dev;
/*if (link->open) {
* ni_gpib_probe(dev); / really?
* //netif_device_attach(dev);
*}
*/
return ni_gpib_config(link);
}
static struct pcmcia_device_id ni_pcmcia_ids[] = {
PCMCIA_DEVICE_MANF_CARD(0x010b, 0x4882),
PCMCIA_DEVICE_MANF_CARD(0x010b, 0x0c71), // NI PCMCIA-GPIB+
PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, ni_pcmcia_ids);
static struct pcmcia_driver ni_gpib_cs_driver = {
.name = "ni_gpib_cs",
.owner = THIS_MODULE,
.drv = { .name = "ni_gpib_cs", },
.id_table = ni_pcmcia_ids,
.probe = ni_gpib_probe,
.remove = ni_gpib_remove,
.suspend = ni_gpib_suspend,
.resume = ni_gpib_resume,
};
static int __init init_ni_gpib_cs(void)
{
return pcmcia_register_driver(&ni_gpib_cs_driver);
}
static void __exit exit_ni_gpib_cs(void)
{
pcmcia_unregister_driver(&ni_gpib_cs_driver);
}
static const int pcmcia_gpib_iosize = 32;
static int ni_pcmcia_attach(struct gpib_board *board, const struct gpib_board_config *config)
{
struct local_info_t *info;
struct tnt4882_priv *tnt_priv;
struct nec7210_priv *nec_priv;
int isr_flags = IRQF_SHARED;
int retval;
if (!curr_dev)
return -ENODEV;
info = curr_dev->priv;
info->dev = board;
board->status = 0;
retval = tnt4882_allocate_private(board);
if (retval)
return retval;
tnt_priv = board->private_data;
nec_priv = &tnt_priv->nec7210_priv;
nec_priv->type = TNT4882;
nec_priv->read_byte = nec7210_locking_ioport_read_byte;
nec_priv->write_byte = nec7210_locking_ioport_write_byte;
nec_priv->offset = atgpib_reg_offset;
if (!request_region(curr_dev->resource[0]->start, resource_size(curr_dev->resource[0]),
DRV_NAME))
return -ENOMEM;
nec_priv->mmiobase = ioport_map(curr_dev->resource[0]->start,
resource_size(curr_dev->resource[0]));
if (!nec_priv->mmiobase)
return -ENOMEM;
// get irq
retval = request_irq(curr_dev->irq, tnt4882_interrupt, isr_flags, DRV_NAME, board);
if (retval) {
dev_err(board->gpib_dev, "failed to obtain PCMCIA irq %d\n", curr_dev->irq);
return retval;
}
tnt_priv->irq = curr_dev->irq;
tnt4882_init(tnt_priv, board);
return 0;
}
static void ni_pcmcia_detach(struct gpib_board *board)
{
struct tnt4882_priv *tnt_priv = board->private_data;
struct nec7210_priv *nec_priv;
if (tnt_priv) {
nec_priv = &tnt_priv->nec7210_priv;
if (tnt_priv->irq)
free_irq(tnt_priv->irq, board);
if (nec_priv->mmiobase)
ioport_unmap(nec_priv->mmiobase);
if (nec_priv->iobase) {
tnt4882_board_reset(tnt_priv, board);
release_region(nec_priv->iobase, pcmcia_gpib_iosize);
}
}
tnt4882_free_private(board);
}
static struct gpib_interface ni_pcmcia_interface = {
.name = "ni_pcmcia",
.attach = ni_pcmcia_attach,
.detach = ni_pcmcia_detach,
.read = tnt4882_accel_read,
.write = tnt4882_accel_write,
.command = tnt4882_command,
.take_control = tnt4882_take_control,
.go_to_standby = tnt4882_go_to_standby,
.request_system_control = tnt4882_request_system_control,
.interface_clear = tnt4882_interface_clear,
.remote_enable = tnt4882_remote_enable,
.enable_eos = tnt4882_enable_eos,
.disable_eos = tnt4882_disable_eos,
.parallel_poll = tnt4882_parallel_poll,
.parallel_poll_configure = tnt4882_parallel_poll_configure,
.parallel_poll_response = tnt4882_parallel_poll_response,
.local_parallel_poll_mode = NULL, // XXX
.line_status = tnt4882_line_status,
.update_status = tnt4882_update_status,
.primary_address = tnt4882_primary_address,
.secondary_address = tnt4882_secondary_address,
.serial_poll_response = tnt4882_serial_poll_response,
.serial_poll_status = tnt4882_serial_poll_status,
.t1_delay = tnt4882_t1_delay,
.return_to_local = tnt4882_return_to_local,
};
static struct gpib_interface ni_pcmcia_accel_interface = {
.name = "ni_pcmcia_accel",
.attach = ni_pcmcia_attach,
.detach = ni_pcmcia_detach,
.read = tnt4882_accel_read,
.write = tnt4882_accel_write,
.command = tnt4882_command,
.take_control = tnt4882_take_control,
.go_to_standby = tnt4882_go_to_standby,
.request_system_control = tnt4882_request_system_control,
.interface_clear = tnt4882_interface_clear,
.remote_enable = tnt4882_remote_enable,
.enable_eos = tnt4882_enable_eos,
.disable_eos = tnt4882_disable_eos,
.parallel_poll = tnt4882_parallel_poll,
.parallel_poll_configure = tnt4882_parallel_poll_configure,
.parallel_poll_response = tnt4882_parallel_poll_response,
.local_parallel_poll_mode = NULL, // XXX
.line_status = tnt4882_line_status,
.update_status = tnt4882_update_status,
.primary_address = tnt4882_primary_address,
.secondary_address = tnt4882_secondary_address,
.serial_poll_response = tnt4882_serial_poll_response,
.serial_poll_status = tnt4882_serial_poll_status,
.t1_delay = tnt4882_t1_delay,
.return_to_local = tnt4882_return_to_local,
};
#endif // CONFIG_GPIB_PCMCIA
module_init(tnt4882_init_module);
module_exit(tnt4882_exit_module);