--- /dev/null
+// 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
+ ***************************************************************************/
+
+#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
+ void (*io_writeb)(unsigned int value, void *address);
+ void (*io_writew)(unsigned int value, void *address);
+ unsigned int (*io_readb)(void *address);
+ unsigned int (*io_readw)(void *address);
+};
+
+// interface functions
+static int tnt4882_read(gpib_board_t *board, uint8_t *buffer, size_t length,
+ int *end, size_t *bytes_read);
+static int tnt4882_accel_read(gpib_board_t *board, uint8_t *buffer, size_t length,
+ int *end, size_t *bytes_read);
+static int tnt4882_write(gpib_board_t *board, uint8_t *buffer, size_t length,
+ int send_eoi, size_t *bytes_written);
+static int tnt4882_accel_write(gpib_board_t *board, uint8_t *buffer, size_t length,
+ int send_eoi, size_t *bytes_written);
+static int tnt4882_command(gpib_board_t *board, uint8_t *buffer, size_t length,
+ size_t *bytes_written);
+static int tnt4882_command_unaccel(gpib_board_t *board, uint8_t *buffer,
+ size_t length, size_t *bytes_written);
+static int tnt4882_take_control(gpib_board_t *board, int synchronous);
+static int tnt4882_go_to_standby(gpib_board_t *board);
+static void tnt4882_request_system_control(gpib_board_t *board, int request_control);
+static void tnt4882_interface_clear(gpib_board_t *board, int assert);
+static void tnt4882_remote_enable(gpib_board_t *board, int enable);
+static int tnt4882_enable_eos(gpib_board_t *board, uint8_t eos_byte, int
+ compare_8_bits);
+static void tnt4882_disable_eos(gpib_board_t *board);
+static unsigned int tnt4882_update_status(gpib_board_t *board, unsigned int clear_mask);
+static int tnt4882_primary_address(gpib_board_t *board, unsigned int address);
+static int tnt4882_secondary_address(gpib_board_t *board, unsigned int address,
+ int enable);
+static int tnt4882_parallel_poll(gpib_board_t *board, uint8_t *result);
+static void tnt4882_parallel_poll_configure(gpib_board_t *board, uint8_t config);
+static void tnt4882_parallel_poll_response(gpib_board_t *board, int ist);
+static void tnt4882_serial_poll_response(gpib_board_t *board, uint8_t status);
+static uint8_t tnt4882_serial_poll_status(gpib_board_t *board);
+static int tnt4882_line_status(const gpib_board_t *board);
+static unsigned int tnt4882_t1_delay(gpib_board_t *board, unsigned int nano_sec);
+static void tnt4882_return_to_local(gpib_board_t *board);
+
+// interrupt service routines
+static irqreturn_t tnt4882_internal_interrupt(gpib_board_t *board);
+static irqreturn_t tnt4882_interrupt(int irq, void *arg);
+
+// utility functions
+static int tnt4882_allocate_private(gpib_board_t *board);
+static void tnt4882_free_private(gpib_board_t *board);
+static void tnt4882_init(struct tnt4882_priv *tnt_priv, const gpib_board_t *board);
+static void tnt4882_board_reset(struct tnt4882_priv *tnt_priv, gpib_board_t *board);
+
+// register offset for nec7210 compatible registers
+static const int atgpib_reg_offset = 2;
+
+// number of ioports used
+static const int atgpib_iosize = 32;
+static const int pcmcia_gpib_iosize = 32;
+
+/* paged io */
+static inline unsigned int tnt_paged_readb(struct tnt4882_priv *priv, unsigned long offset)
+{
+ priv->io_writeb(AUX_PAGEIN, priv->nec7210_priv.iobase + AUXMR * priv->nec7210_priv.offset);
+ udelay(1);
+ return priv->io_readb(priv->nec7210_priv.iobase + offset);
+}
+
+static inline void tnt_paged_writeb(struct tnt4882_priv *priv, unsigned int value,
+ unsigned long offset)
+{
+ priv->io_writeb(AUX_PAGEIN, priv->nec7210_priv.iobase + AUXMR * priv->nec7210_priv.offset);
+ udelay(1);
+ priv->io_writeb(value, priv->nec7210_priv.iobase + offset);
+}
+
+/* readb/writeb wrappers */
+static inline unsigned short tnt_readb(struct tnt4882_priv *priv, unsigned long offset)
+{
+ void *address = priv->nec7210_priv.iobase + 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 = priv->io_readb(address);
+ break;
+ case NAT4882:
+ retval = tnt_paged_readb(priv, offset - tnt_pagein_offset);
+ break;
+ case NEC7210:
+ retval = 0;
+ break;
+ default:
+ pr_err("tnt4882: bug! unsupported ni_chipset\n");
+ retval = 0;
+ break;
+ }
+ break;
+ default:
+ retval = priv->io_readb(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 *address = priv->nec7210_priv.iobase + 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:
+ priv->io_writeb(value, address);
+ break;
+ case NAT4882:
+ tnt_paged_writeb(priv, value, offset - tnt_pagein_offset);
+ break;
+ case NEC7210:
+ break;
+ default:
+ pr_err("tnt4882: bug! unsupported ni_chipset\n");
+ break;
+ }
+ break;
+ default:
+ priv->io_writeb(value, address);
+ break;
+ }
+ spin_unlock_irqrestore(register_lock, flags);
+}
+
+MODULE_LICENSE("GPL");
+
+int tnt4882_line_status(const gpib_board_t *board)
+{
+ int status = ValidALL;
+ 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 |= BusREN;
+ if (bcsr_bits & BCSR_IFC_BIT)
+ status |= BusIFC;
+ if (bcsr_bits & BCSR_SRQ_BIT)
+ status |= BusSRQ;
+ if (bcsr_bits & BCSR_EOI_BIT)
+ status |= BusEOI;
+ if (bcsr_bits & BCSR_NRFD_BIT)
+ status |= BusNRFD;
+ if (bcsr_bits & BCSR_NDAC_BIT)
+ status |= BusNDAC;
+ if (bcsr_bits & BCSR_DAV_BIT)
+ status |= BusDAV;
+ if (bcsr_bits & BCSR_ATN_BIT)
+ status |= BusATN;
+
+ return status;
+}
+
+unsigned int tnt4882_t1_delay(gpib_board_t *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, uint8_t *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 = tnt_priv->io_readw(nec_priv->iobase + FIFOB);
+ buffer[count++] = word & 0xff;
+ buffer[count++] = (word >> 8) & 0xff;
+ }
+ return count;
+}
+
+static void tnt4882_release_holdoff(gpib_board_t *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);
+ }
+}
+
+int tnt4882_accel_read(gpib_board_t *board, uint8_t *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))) {
+ pr_err("tnt4882: read interrupted\n");
+ retval = -ERESTARTSYS;
+ break;
+ }
+ if (test_bit(TIMO_NUM, &board->status)) {
+ //pr_info("tnt4882: minor %i read timed out\n", board->minor);
+ retval = -ETIMEDOUT;
+ break;
+ }
+ if (test_bit(DEV_CLEAR_BN, &nec_priv->state)) {
+ pr_err("tnt4882: device clear interrupted read\n");
+ retval = -EINTR;
+ break;
+ }
+ if (test_bit(ADR_CHANGE_BN, &nec_priv->state)) {
+ pr_err("tnt4882: address change interrupted read\n");
+ 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))) {
+ pr_err("tnt4882: read interrupted\n");
+ retval = -ERESTARTSYS;
+ }
+ if (test_bit(TIMO_NUM, &board->status))
+ //pr_info("tnt4882: read timed out\n");
+ retval = -ETIMEDOUT;
+ if (test_bit(DEV_CLEAR_BN, &nec_priv->state)) {
+ pr_err("tnt4882: device clear interrupted read\n");
+ retval = -EINTR;
+ }
+ if (test_bit(ADR_CHANGE_BN, &nec_priv->state)) {
+ pr_err("tnt4882: address change interrupted read\n");
+ 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(gpib_board_t *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))) {
+ GPIB_DPRINTK("gpib write interrupted\n");
+ return -ERESTARTSYS;
+ }
+ if (test_bit(TIMO_NUM, &board->status)) {
+ pr_info("tnt4882: write timed out\n");
+ return -ETIMEDOUT;
+ }
+ if (test_and_clear_bit(BUS_ERROR_BN, &nec_priv->state)) {
+ pr_err("tnt4882: write bus error\n");
+ return (send_commands) ? -ENOTCONN : -ECOMM;
+ }
+ if (test_bit(DEV_CLEAR_BN, &nec_priv->state)) {
+ pr_err("tnt4882: device clear interrupted write\n");
+ return -EINTR;
+ }
+ return 0;
+}
+
+static int generic_write(gpib_board_t *board, uint8_t *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;
+ tnt_priv->io_writew(word, nec_priv->iobase + 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;
+}
+
+int tnt4882_accel_write(gpib_board_t *board, uint8_t *buffer, size_t length, int send_eoi,
+ size_t *bytes_written)
+{
+ return generic_write(board, buffer, length, send_eoi, 0, bytes_written);
+}
+
+int tnt4882_command(gpib_board_t *board, uint8_t *buffer, size_t length, size_t *bytes_written)
+{
+ return generic_write(board, buffer, length, 0, 1, bytes_written);
+}
+
+irqreturn_t tnt4882_internal_interrupt(gpib_board_t *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, EventIFC);
+ //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)) {
+ GPIB_DPRINTK("tnt4882: 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;
+}
+
+irqreturn_t tnt4882_interrupt(int irq, void *arg)
+{
+ return tnt4882_internal_interrupt(arg);
+}
+
+static int ni_tnt_isa_attach(gpib_board_t *board, const gpib_board_config_t *config);
+static int ni_nat4882_isa_attach(gpib_board_t *board, const gpib_board_config_t *config);
+static int ni_nec_isa_attach(gpib_board_t *board, const gpib_board_config_t *config);
+static int ni_pci_attach(gpib_board_t *board, const gpib_board_config_t *config);
+
+static void ni_isa_detach(gpib_board_t *board);
+static void ni_pci_detach(gpib_board_t *board);
+
+#ifdef GPIB_PCMCIA
+static int ni_pcmcia_attach(gpib_board_t *board, const gpib_board_config_t *config);
+static void ni_pcmcia_detach(gpib_board_t *board);
+static int init_ni_gpib_cs(void);
+static void __exit exit_ni_gpib_cs(void);
+#endif
+
+// wrappers for interface functions
+int tnt4882_read(gpib_board_t *board, uint8_t *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;
+}
+
+int tnt4882_write(gpib_board_t *board, uint8_t *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);
+}
+
+int tnt4882_command_unaccel(gpib_board_t *board, uint8_t *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);
+}
+
+int tnt4882_take_control(gpib_board_t *board, int synchronous)
+{
+ struct tnt4882_priv *priv = board->private_data;
+
+ return nec7210_take_control(board, &priv->nec7210_priv, synchronous);
+}
+
+int tnt4882_go_to_standby(gpib_board_t *board)
+{
+ struct tnt4882_priv *priv = board->private_data;
+
+ return nec7210_go_to_standby(board, &priv->nec7210_priv);
+}
+
+void tnt4882_request_system_control(gpib_board_t *board, int request_control)
+{
+ struct tnt4882_priv *priv = board->private_data;
+
+ if (request_control) {
+ tnt_writeb(priv, SETSC, CMDR);
+ udelay(1);
+ }
+ nec7210_request_system_control(board, &priv->nec7210_priv, request_control);
+ if (!request_control) {
+ tnt_writeb(priv, CLRSC, CMDR);
+ udelay(1);
+ }
+}
+
+void tnt4882_interface_clear(gpib_board_t *board, int assert)
+{
+ struct tnt4882_priv *priv = board->private_data;
+
+ nec7210_interface_clear(board, &priv->nec7210_priv, assert);
+}
+
+void tnt4882_remote_enable(gpib_board_t *board, int enable)
+{
+ struct tnt4882_priv *priv = board->private_data;
+
+ nec7210_remote_enable(board, &priv->nec7210_priv, enable);
+}
+
+int tnt4882_enable_eos(gpib_board_t *board, uint8_t 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);
+}
+
+void tnt4882_disable_eos(gpib_board_t *board)
+{
+ struct tnt4882_priv *priv = board->private_data;
+
+ nec7210_disable_eos(board, &priv->nec7210_priv);
+}
+
+unsigned int tnt4882_update_status(gpib_board_t *board, unsigned int clear_mask)
+{
+ unsigned long flags;
+ u8 line_status;
+ unsigned int retval;
+ struct tnt4882_priv *priv = board->private_data;
+
+ spin_lock_irqsave(&board->spinlock, flags);
+ board->status &= ~clear_mask;
+ retval = 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;
+}
+
+int tnt4882_primary_address(gpib_board_t *board, unsigned int address)
+{
+ struct tnt4882_priv *priv = board->private_data;
+
+ return nec7210_primary_address(board, &priv->nec7210_priv, address);
+}
+
+int tnt4882_secondary_address(gpib_board_t *board, unsigned int address, int enable)
+{
+ struct tnt4882_priv *priv = board->private_data;
+
+ return nec7210_secondary_address(board, &priv->nec7210_priv, address, enable);
+}
+
+int tnt4882_parallel_poll(gpib_board_t *board, uint8_t *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);
+ }
+}
+
+void tnt4882_parallel_poll_configure(gpib_board_t *board, uint8_t 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);
+ }
+}
+
+void tnt4882_parallel_poll_response(gpib_board_t *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
+ */
+void tnt4882_serial_poll_response(gpib_board_t *board, uint8_t status)
+{
+ struct tnt4882_priv *priv = board->private_data;
+
+ nec7210_serial_poll_response(board, &priv->nec7210_priv, status);
+}
+
+static void tnt4882_serial_poll_response2(gpib_board_t *board, uint8_t 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);
+}
+
+uint8_t tnt4882_serial_poll_status(gpib_board_t *board)
+{
+ struct tnt4882_priv *priv = board->private_data;
+
+ return nec7210_serial_poll_status(board, &priv->nec7210_priv);
+}
+
+void tnt4882_return_to_local(gpib_board_t *board)
+{
+ struct tnt4882_priv *priv = board->private_data;
+
+ nec7210_return_to_local(board, &priv->nec7210_priv);
+}
+
+gpib_interface_t 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,
+};
+
+gpib_interface_t 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,
+};
+
+gpib_interface_t 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,
+};
+
+gpib_interface_t 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,
+};
+
+gpib_interface_t 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,
+};
+
+gpib_interface_t 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,
+};
+
+gpib_interface_t 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,
+};
+
+gpib_interface_t 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,
+};
+
+#ifdef GPIB_PCMCIA
+gpib_interface_t 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,
+};
+
+gpib_interface_t 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
+
+void tnt4882_board_reset(struct tnt4882_priv *tnt_priv, gpib_board_t *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);
+}
+
+int tnt4882_allocate_private(gpib_board_t *board)
+{
+ struct tnt4882_priv *tnt_priv;
+
+ board->private_data = kmalloc(sizeof(struct tnt4882_priv), GFP_KERNEL);
+ if (!board->private_data)
+ return -1;
+ tnt_priv = board->private_data;
+ memset(tnt_priv, 0, sizeof(struct tnt4882_priv));
+ init_nec7210_private(&tnt_priv->nec7210_priv);
+ return 0;
+}
+
+void tnt4882_free_private(gpib_board_t *board)
+{
+ kfree(board->private_data);
+ board->private_data = NULL;
+}
+
+void tnt4882_init(struct tnt4882_priv *tnt_priv, const gpib_board_t *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);
+}
+
+int ni_pci_attach(gpib_board_t *board, const gpib_board_config_t *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;
+
+ if (tnt4882_allocate_private(board))
+ return -ENOMEM;
+ tnt_priv = board->private_data;
+ tnt_priv->io_writeb = writeb_wrapper;
+ tnt_priv->io_readb = readb_wrapper;
+ tnt_priv->io_writew = writew_wrapper;
+ tnt_priv->io_readw = readw_wrapper;
+ 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) {
+ pr_err("no National Instruments PCI boards found\n");
+ return -1;
+ }
+
+ 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) {
+ pr_err("no NI PCI-GPIB boards found\n");
+ return -1;
+ }
+ tnt_priv->mite = mite;
+ retval = mite_setup(tnt_priv->mite);
+ if (retval < 0) {
+ pr_err("tnt4882: error setting up mite.\n");
+ return retval;
+ }
+
+ nec_priv->iobase = tnt_priv->mite->daq_io_addr;
+
+ // get irq
+ if (request_irq(mite_irq(tnt_priv->mite), tnt4882_interrupt, isr_flags,
+ "ni-pci-gpib", board)) {
+ pr_err("gpib: can't request IRQ %d\n", mite_irq(tnt_priv->mite));
+ return -1;
+ }
+ tnt_priv->irq = mite_irq(tnt_priv->mite);
+ pr_info("tnt4882: irq %i\n", tnt_priv->irq);
+
+ // TNT5004 detection
+ switch (tnt_readb(tnt_priv, CSR) & 0xf0) {
+ case 0x30:
+ nec_priv->type = TNT4882;
+ pr_info("tnt4882: TNT4882 chipset detected\n");
+ break;
+ case 0x40:
+ nec_priv->type = TNT5004;
+ pr_info("tnt4882: TNT5004 chipset detected\n");
+ break;
+ }
+ tnt4882_init(tnt_priv, board);
+
+ return 0;
+}
+
+void ni_pci_detach(gpib_board_t *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 (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) {
+ pr_err("tnt4882: failed to find isapnp board\n");
+ return -ENODEV;
+ }
+ if (pnp_device_attach(*dev) < 0) {
+ pr_err("tnt4882: atgpib/tnt board already active, skipping\n");
+ return -EBUSY;
+ }
+ if (pnp_activate_dev(*dev) < 0) {
+ pnp_device_detach(*dev);
+ pr_err("tnt4882: failed to activate() atgpib/tnt, aborting\n");
+ return -EAGAIN;
+ }
+ if (!pnp_port_valid(*dev, 0) || !pnp_irq_valid(*dev, 0)) {
+ pnp_device_detach(*dev);
+ pr_err("tnt4882: invalid port or irq for atgpib/tnt, aborting\n");
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+static int ni_isa_attach_common(gpib_board_t *board, const gpib_board_config_t *config,
+ enum nec7210_chipset chipset)
+{
+ struct tnt4882_priv *tnt_priv;
+ struct nec7210_priv *nec_priv;
+ int isr_flags = 0;
+ void *iobase;
+ int irq;
+
+ board->status = 0;
+
+ if (tnt4882_allocate_private(board))
+ return -ENOMEM;
+ tnt_priv = board->private_data;
+ tnt_priv->io_writeb = outb_wrapper;
+ tnt_priv->io_readb = inb_wrapper;
+ tnt_priv->io_writew = outw_wrapper;
+ tnt_priv->io_readw = inw_wrapper;
+ 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;
+ int retval;
+
+ retval = ni_isapnp_find(&dev);
+ if (retval < 0)
+ return retval;
+ tnt_priv->pnp_dev = dev;
+ iobase = (void *)(pnp_port_start(dev, 0));
+ irq = pnp_irq(dev, 0);
+ } else {
+ iobase = config->ibbase;
+ irq = config->ibirq;
+ }
+ // allocate ioports
+ if (!request_region((unsigned long)(iobase), atgpib_iosize, "atgpib")) {
+ pr_err("tnt4882: failed to allocate ioports\n");
+ return -1;
+ }
+ nec_priv->iobase = iobase;
+
+ // get irq
+ if (request_irq(irq, tnt4882_interrupt, isr_flags, "atgpib", board)) {
+ pr_err("gpib: can't request IRQ %d\n", irq);
+ return -1;
+ }
+ tnt_priv->irq = irq;
+
+ tnt4882_init(tnt_priv, board);
+
+ return 0;
+}
+
+int ni_tnt_isa_attach(gpib_board_t *board, const gpib_board_config_t *config)
+{
+ return ni_isa_attach_common(board, config, TNT4882);
+}
+
+int ni_nat4882_isa_attach(gpib_board_t *board, const gpib_board_config_t *config)
+{
+ return ni_isa_attach_common(board, config, NAT4882);
+}
+
+int ni_nec_isa_attach(gpib_board_t *board, const gpib_board_config_t *config)
+{
+ return ni_isa_attach_common(board, config, NEC7210);
+}
+
+void ni_isa_detach(gpib_board_t *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->iobase)
+ release_region((unsigned long)(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 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 = "tnt4882",
+ .id_table = tnt4882_pci_table,
+ .probe = &tnt4882_pci_probe
+};
+
+static const struct pnp_device_id tnt4882_pnp_table[] = {
+ {.id = "NICC601"},
+ {.id = ""}
+};
+MODULE_DEVICE_TABLE(pnp, tnt4882_pnp_table);
+
+static int __init tnt4882_init_module(void)
+{
+ int result;
+
+ result = pci_register_driver(&tnt4882_pci_driver);
+ if (result) {
+ pr_err("tnt4882: pci_driver_register failed!\n");
+ return result;
+ }
+
+ gpib_register_driver(&ni_isa_interface, THIS_MODULE);
+ gpib_register_driver(&ni_isa_accel_interface, THIS_MODULE);
+ gpib_register_driver(&ni_nat4882_isa_interface, THIS_MODULE);
+ gpib_register_driver(&ni_nat4882_isa_accel_interface, THIS_MODULE);
+ gpib_register_driver(&ni_nec_isa_interface, THIS_MODULE);
+ gpib_register_driver(&ni_nec_isa_accel_interface, THIS_MODULE);
+ gpib_register_driver(&ni_pci_interface, THIS_MODULE);
+ gpib_register_driver(&ni_pci_accel_interface, THIS_MODULE);
+#ifdef GPIB_PCMCIA
+ gpib_register_driver(&ni_pcmcia_interface, THIS_MODULE);
+ gpib_register_driver(&ni_pcmcia_accel_interface, THIS_MODULE);
+ if (init_ni_gpib_cs() < 0)
+ return -1;
+#endif
+
+ mite_init();
+ mite_list_devices();
+
+ return 0;
+}
+
+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 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 GPIB_PCMCIA
+
+#include <linux/kernel.h>
+#include <linux/moduleparam.h>
+#include <linux/ptrace.h>
+#include <linux/timer.h>
+#include <linux/ioport.h>
+#include <linux/io.h>
+
+#include <pcmcia/cistpl.h>
+#include <pcmcia/cisreg.h>
+#include <pcmcia/ds.h>
+
+/*
+ * All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If
+ * you do not define PCMCIA_DEBUG at all, all the debug code will be
+ * left out. If you compile with PCMCIA_DEBUG=0, the debug code will
+ * be present but disabled -- but it can then be enabled for specific
+ * modules at load time with a 'pc_debug=#' option to insmod.
+ */
+#define PCMCIA_DEBUG 1
+#ifdef PCMCIA_DEBUG
+static int pc_debug = PCMCIA_DEBUG;
+module_param(pc_debug, int, 0);
+#define DEBUG(n, args...) \
+ do {if (pc_debug > (n)) \
+ pr_debug(args); } \
+ while (0)
+#else
+#define DEBUG(args...)
+#endif
+
+static int ni_gpib_config(struct pcmcia_device *link);
+static void ni_gpib_release(struct pcmcia_device *link);
+static int ni_pcmcia_attach(gpib_board_t *board, const gpib_board_config_t *config);
+static void ni_pcmcia_detach(gpib_board_t *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;
+ gpib_board_t *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 gpib_board_t *dev;
+
+ DEBUG(0, "%s(0x%p)\n", __func__, link);
+
+ /* Allocate space for private device-specific data */
+ info = kmalloc(sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+ memset(info, 0, sizeof(*info));
+
+ 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 gpib_board_t *dev = info->dev;
+
+ DEBUG(0, "%s(%p)\n", __func__, link);
+
+ 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;
+ //gpib_board_t *dev = info->dev;
+ int last_ret;
+
+ DEBUG(0, "%s(0x%p)\n", __func__, link);
+
+ 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)
+{
+ DEBUG(0, "%s(0x%p)\n", __func__, 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 gpib_board_t *dev = info->dev;
+ DEBUG(0, "%s(0x%p)\n", __func__, link);
+
+ if (link->open)
+ pr_err("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 gpib_board_t *dev = info->dev;
+ DEBUG(0, "%s(0x%p)\n", __func__, link);
+
+ /*if (link->open) {
+ * ni_gpib_probe(dev); / really?
+ * printk("Gpib resumed ???\n");
+ * //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,
+};
+
+int __init init_ni_gpib_cs(void)
+{
+ return pcmcia_register_driver(&ni_gpib_cs_driver);
+}
+
+void __exit exit_ni_gpib_cs(void)
+{
+ DEBUG(0, "ni_gpib_cs: unloading\n");
+ pcmcia_unregister_driver(&ni_gpib_cs_driver);
+}
+
+int ni_pcmcia_attach(gpib_board_t *board, const gpib_board_config_t *config)
+{
+ struct local_info_t *info;
+ struct tnt4882_priv *tnt_priv;
+ struct nec7210_priv *nec_priv;
+ int isr_flags = IRQF_SHARED;
+
+ DEBUG(0, "%s(0x%p)\n", __func__, board);
+
+ if (!curr_dev) {
+ pr_err("gpib: no NI PCMCIA board found\n");
+ return -1;
+ }
+
+ info = curr_dev->priv;
+ info->dev = board;
+
+ board->status = 0;
+
+ if (tnt4882_allocate_private(board))
+ return -ENOMEM;
+ tnt_priv = board->private_data;
+ tnt_priv->io_writeb = outb_wrapper;
+ tnt_priv->io_readb = inb_wrapper;
+ tnt_priv->io_writew = outw_wrapper;
+ tnt_priv->io_readw = inw_wrapper;
+ 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;
+
+ DEBUG(0, "ioport1 window attributes: 0x%lx\n", curr_dev->resource[0]->flags);
+ if (request_region(curr_dev->resource[0]->start, resource_size(curr_dev->resource[0]),
+ "tnt4882") == 0) {
+ pr_err("gpib: ioports starting at 0x%lx are already in use\n",
+ (unsigned long)curr_dev->resource[0]->start);
+ return -EIO;
+ }
+
+ nec_priv->iobase = (void *)(unsigned long)curr_dev->resource[0]->start;
+
+ // get irq
+ if (request_irq(curr_dev->irq, tnt4882_interrupt, isr_flags, "tnt4882", board)) {
+ pr_err("gpib: can't request IRQ %d\n", curr_dev->irq);
+ return -1;
+ }
+ tnt_priv->irq = curr_dev->irq;
+
+ tnt4882_init(tnt_priv, board);
+
+ return 0;
+}
+
+void ni_pcmcia_detach(gpib_board_t *board)
+{
+ struct tnt4882_priv *tnt_priv = board->private_data;
+ struct nec7210_priv *nec_priv;
+
+ DEBUG(0, "%s(0x%p)\n", __func__, board);
+
+ if (tnt_priv) {
+ nec_priv = &tnt_priv->nec7210_priv;
+ if (tnt_priv->irq)
+ free_irq(tnt_priv->irq, board);
+ if (nec_priv->iobase) {
+ tnt4882_board_reset(tnt_priv, board);
+ release_region((unsigned long)nec_priv->iobase, pcmcia_gpib_iosize);
+ }
+ }
+ tnt4882_free_private(board);
+}
+
+#endif // GPIB_PCMCIA
+
+module_init(tnt4882_init_module);
+module_exit(tnt4882_exit_module);
projects / thirdparty / kernel / linux.git / commitdiff
