summaryrefslogtreecommitdiff
path: root/drivers/gpib/tnt4882
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpib/tnt4882')
-rw-r--r--drivers/gpib/tnt4882/Makefile6
-rw-r--r--drivers/gpib/tnt4882/mite.c133
-rw-r--r--drivers/gpib/tnt4882/mite.h234
-rw-r--r--drivers/gpib/tnt4882/tnt4882_gpib.c1838
4 files changed, 2211 insertions, 0 deletions
diff --git a/drivers/gpib/tnt4882/Makefile b/drivers/gpib/tnt4882/Makefile
new file mode 100644
index 000000000000..fa1687ad0d1b
--- /dev/null
+++ b/drivers/gpib/tnt4882/Makefile
@@ -0,0 +1,6 @@
+obj-$(CONFIG_GPIB_NI_PCI_ISA) += tnt4882.o
+
+tnt4882-objs := tnt4882_gpib.o mite.o
+
+
+
diff --git a/drivers/gpib/tnt4882/mite.c b/drivers/gpib/tnt4882/mite.c
new file mode 100644
index 000000000000..847b96f411bd
--- /dev/null
+++ b/drivers/gpib/tnt4882/mite.c
@@ -0,0 +1,133 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+/*
+ * Hardware driver for NI Mite PCI interface chip,
+ * adapted from COMEDI
+ *
+ * Copyright (C) 1997-8 David A. Schleef
+ * Copyright (C) 2002 Frank Mori Hess
+ *
+ * The PCI-MIO E series driver was originally written by
+ * Tomasz Motylewski <...>, and ported to comedi by ds.
+ *
+ * References for specifications:
+ *
+ * 321747b.pdf Register Level Programmer Manual (obsolete)
+ * 321747c.pdf Register Level Programmer Manual (new)
+ * DAQ-STC reference manual
+ *
+ * Other possibly relevant info:
+ *
+ * 320517c.pdf User manual (obsolete)
+ * 320517f.pdf User manual (new)
+ * 320889a.pdf delete
+ * 320906c.pdf maximum signal ratings
+ * 321066a.pdf about 16x
+ * 321791a.pdf discontinuation of at-mio-16e-10 rev. c
+ * 321808a.pdf about at-mio-16e-10 rev P
+ * 321837a.pdf discontinuation of at-mio-16de-10 rev d
+ * 321838a.pdf about at-mio-16de-10 rev N
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+
+#include "mite.h"
+
+#define PCI_MITE_SIZE 4096
+#define PCI_DAQ_SIZE 4096
+
+struct mite_struct *mite_devices;
+
+#define TOP_OF_PAGE(x) ((x) | (~(PAGE_MASK)))
+
+void mite_init(void)
+{
+ struct pci_dev *pcidev;
+ struct mite_struct *mite;
+
+ for (pcidev = pci_get_device(PCI_VENDOR_ID_NATINST, PCI_ANY_ID, NULL);
+ pcidev;
+ pcidev = pci_get_device(PCI_VENDOR_ID_NATINST, PCI_ANY_ID, pcidev)) {
+ mite = kzalloc(sizeof(*mite), GFP_KERNEL);
+ if (!mite)
+ return;
+
+ mite->pcidev = pcidev;
+ pci_dev_get(mite->pcidev);
+ mite->next = mite_devices;
+ mite_devices = mite;
+ }
+}
+
+int mite_setup(struct mite_struct *mite)
+{
+ u32 addr;
+
+ if (pci_enable_device(mite->pcidev)) {
+ pr_err("mite: error enabling mite.\n");
+ return -EIO;
+ }
+ pci_set_master(mite->pcidev);
+ if (pci_request_regions(mite->pcidev, "mite")) {
+ pr_err("mite: failed to request mite io regions.\n");
+ return -EIO;
+ }
+ addr = pci_resource_start(mite->pcidev, 0);
+ mite->mite_phys_addr = addr;
+ mite->mite_io_addr = ioremap(addr, pci_resource_len(mite->pcidev, 0));
+ if (!mite->mite_io_addr) {
+ pr_err("mite: failed to remap mite io memory address.\n");
+ return -ENOMEM;
+ }
+ addr = pci_resource_start(mite->pcidev, 1);
+ mite->daq_phys_addr = addr;
+ mite->daq_io_addr = ioremap(mite->daq_phys_addr, pci_resource_len(mite->pcidev, 1));
+ if (!mite->daq_io_addr) {
+ pr_err("mite: failed to remap daq io memory address.\n");
+ return -ENOMEM;
+ }
+ writel(mite->daq_phys_addr | WENAB, mite->mite_io_addr + MITE_IODWBSR);
+ mite->used = 1;
+ return 0;
+}
+
+void mite_cleanup(void)
+{
+ struct mite_struct *mite, *next;
+
+ for (mite = mite_devices; mite; mite = next) {
+ next = mite->next;
+ if (mite->pcidev)
+ pci_dev_put(mite->pcidev);
+ kfree(mite);
+ }
+}
+
+void mite_unsetup(struct mite_struct *mite)
+{
+ if (!mite)
+ return;
+ if (mite->mite_io_addr) {
+ iounmap(mite->mite_io_addr);
+ mite->mite_io_addr = NULL;
+ }
+ if (mite->daq_io_addr) {
+ iounmap(mite->daq_io_addr);
+ mite->daq_io_addr = NULL;
+ }
+ if (mite->mite_phys_addr) {
+ pci_release_regions(mite->pcidev);
+ pci_disable_device(mite->pcidev);
+ mite->mite_phys_addr = 0;
+ }
+ mite->used = 0;
+}
diff --git a/drivers/gpib/tnt4882/mite.h b/drivers/gpib/tnt4882/mite.h
new file mode 100644
index 000000000000..a1fdba9672a0
--- /dev/null
+++ b/drivers/gpib/tnt4882/mite.h
@@ -0,0 +1,234 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/*
+ * Hardware driver for NI Mite PCI interface chip
+ *
+ * Copyright (C) 1999 David A. Schleef <ds@stm.lbl.gov>
+ */
+
+#ifndef _MITE_H_
+#define _MITE_H_
+
+#include <linux/pci.h>
+
+#define PCI_VENDOR_ID_NATINST 0x1093
+
+//#define DEBUG_MITE
+
+#ifdef DEBUG_MITE
+#define MDPRINTK(format, args...) pr_debug(format, ## args)
+#else
+#define MDPRINTK(args...)
+#endif
+
+#define MITE_RING_SIZE 3000
+struct mite_dma_chain {
+ u32 count;
+ u32 addr;
+ u32 next;
+};
+
+struct mite_struct {
+ struct mite_struct *next;
+ int used;
+
+ struct pci_dev *pcidev;
+ unsigned long mite_phys_addr;
+ void __iomem *mite_io_addr;
+ unsigned long daq_phys_addr;
+ void __iomem *daq_io_addr;
+
+ int DMA_CheckNearEnd;
+
+ struct mite_dma_chain ring[MITE_RING_SIZE];
+};
+
+extern struct mite_struct *mite_devices;
+
+extern inline unsigned int mite_irq(struct mite_struct *mite)
+{
+ return mite->pcidev->irq;
+};
+
+extern inline unsigned int mite_device_id(struct mite_struct *mite)
+{
+ return mite->pcidev->device;
+};
+
+void mite_init(void);
+void mite_cleanup(void);
+int mite_setup(struct mite_struct *mite);
+void mite_unsetup(struct mite_struct *mite);
+void mite_list_devices(void);
+
+#define CHAN_OFFSET(x) (0x100 * (x))
+
+/* DMA base for chan 0 is 0x500, chan 1 is 0x600 */
+
+#define MITE_CHOR 0x500
+#define CHOR_DMARESET BIT(31)
+#define CHOR_SET_SEND_TC BIT(11)
+#define CHOR_CLR_SEND_TC BIT(10)
+#define CHOR_SET_LPAUSE BIT(9)
+#define CHOR_CLR_LPAUSE BIT(8)
+#define CHOR_CLRDONE BIT(7)
+#define CHOR_CLRRB BIT(6)
+#define CHOR_CLRLC BIT(5)
+#define CHOR_FRESET BIT(4)
+#define CHOR_ABORT BIT(3)
+#define CHOR_STOP BIT(2)
+#define CHOR_CONT BIT(1)
+#define CHOR_START BIT(0)
+#define CHOR_PON (CHOR_CLR_SEND_TC | CHOR_CLR_LPAUSE)
+
+#define MITE_CHCR 0x504
+#define CHCR_SET_DMA_IE BIT(31)
+#define CHCR_CLR_DMA_IE BIT(30)
+#define CHCR_SET_LINKP_IE BIT(29)
+#define CHCR_CLR_LINKP_IE BIT(28)
+#define CHCR_SET_SAR_IE BIT(27)
+#define CHCR_CLR_SAR_IE BIT(26)
+#define CHCR_SET_DONE_IE BIT(25)
+#define CHCR_CLR_DONE_IE BIT(24)
+#define CHCR_SET_MRDY_IE BIT(23)
+#define CHCR_CLR_MRDY_IE BIT(22)
+#define CHCR_SET_DRDY_IE BIT(21)
+#define CHCR_CLR_DRDY_IE BIT(20)
+#define CHCR_SET_LC_IE BIT(19)
+#define CHCR_CLR_LC_IE BIT(18)
+#define CHCR_SET_CONT_RB_IE BIT(17)
+#define CHCR_CLR_CONT_RB_IE BIT(16)
+#define CHCR_FIFODIS BIT(15)
+#define CHCR_FIFO_ON 0
+#define CHCR_BURSTEN BIT(14)
+#define CHCR_NO_BURSTEN 0
+#define CHCR_NFTP(x) ((x) << 11)
+#define CHCR_NFTP0 CHCR_NFTP(0)
+#define CHCR_NFTP1 CHCR_NFTP(1)
+#define CHCR_NFTP2 CHCR_NFTP(2)
+#define CHCR_NFTP4 CHCR_NFTP(3)
+#define CHCR_NFTP8 CHCR_NFTP(4)
+#define CHCR_NFTP16 CHCR_NFTP(5)
+#define CHCR_NETP(x) ((x) << 11)
+#define CHCR_NETP0 CHCR_NETP(0)
+#define CHCR_NETP1 CHCR_NETP(1)
+#define CHCR_NETP2 CHCR_NETP(2)
+#define CHCR_NETP4 CHCR_NETP(3)
+#define CHCR_NETP8 CHCR_NETP(4)
+#define CHCR_CHEND1 BIT(5)
+#define CHCR_CHEND0 BIT(4)
+#define CHCR_DIR BIT(3)
+#define CHCR_DEV_TO_MEM CHCR_DIR
+#define CHCR_MEM_TO_DEV 0
+#define CHCR_NORMAL ((0) << 0)
+#define CHCR_CONTINUE ((1) << 0)
+#define CHCR_RINGBUFF ((2) << 0)
+#define CHCR_LINKSHORT ((4) << 0)
+#define CHCR_LINKLONG ((5) << 0)
+#define CHCRPON (CHCR_CLR_DMA_IE | CHCR_CLR_LINKP_IE | CHCR_CLR_SAR_IE | \
+ CHCR_CLR_DONE_IE | CHCR_CLR_MRDY_IE | CHCR_CLR_DRDY_IE | \
+ CHCR_CLR_LC_IE | CHCR_CLR_CONT_IE)
+
+#define MITE_TCR 0x508
+
+/* CR bits */
+#define CR_RL(x) ((x) << 21)
+#define CR_RL0 CR_RL(0)
+#define CR_RL1 CR_RL(1)
+#define CR_RL2 CR_RL(2)
+#define CR_RL4 CR_RL(3)
+#define CR_RL8 CR_RL(4)
+#define CR_RL16 CR_RL(5)
+#define CR_RL32 CR_RL(6)
+#define CR_RL64 CR_RL(7)
+#define CR_RD(x) ((x) << 19)
+#define CR_RD0 CR_RD(0)
+#define CR_RD32 CR_RD(1)
+#define CR_RD512 CR_RD(2)
+#define CR_RD8192 CR_RD(3)
+#define CR_REQS(x) ((x) << 16)
+#define CR_REQSDRQ0 CR_REQS(4)
+#define CR_REQSDRQ1 CR_REQS(5)
+#define CR_REQSDRQ2 CR_REQS(6)
+#define CR_REQSDRQ3 CR_REQS(7)
+#define CR_ASEQX(x) ((x) << 10)
+#define CR_ASEQX0 CR_ASEQX(0)
+#define CR_ASEQDONT CR_ASEQX0
+#define CR_ASEQXP1 CR_ASEQX(1)
+#define CR_ASEQUP CR_ASEQXP1
+#define CR_ASEQXP2 CR_ASEQX(2)
+#define CR_ASEQDOWN CR_ASEQXP2
+#define CR_ASEQXP4 CR_ASEQX(3)
+#define CR_ASEQXP8 CR_ASEQX(4)
+#define CR_ASEQXP16 CR_ASEQX(5)
+#define CR_ASEQXP32 CR_ASEQX(6)
+#define CR_ASEQXP64 CR_ASEQX(7)
+#define CR_ASEQXM1 CR_ASEQX(9)
+#define CR_ASEQXM2 CR_ASEQX(10)
+#define CR_ASEQXM4 CR_ASEQX(11)
+#define CR_ASEQXM8 CR_ASEQX(12)
+#define CR_ASEQXM16 CR_ASEQX(13)
+#define CR_ASEQXM32 CR_ASEQX(14)
+#define CR_ASEQXM64 CR_ASEQX(15)
+#define CR_PSIZEBYTE BIT(8)
+#define CR_PSIZEHALF (2 << 8)
+#define CR_PSIZEWORD (3 << 8)
+#define CR_PORTCPU (0 << 6)
+#define CR_PORTIO BIT(6)
+#define CR_PORTVXI (2 << 6)
+#define CR_PORTMXI (3 << 6)
+#define CR_AMDEVICE BIT(0)
+
+#define CHSR_INT 0x80000000
+#define CHSR_DONE 0x02000000
+#define CHSR_LINKC 0x00080000
+
+#define MITE_MCR 0x50c
+#define MCRPON 0
+
+#define MITE_MAR 0x510
+
+#define MITE_DCR 0x514
+#define DCR_NORMAL BIT(29)
+#define DCRPON 0
+
+#define MITE_DAR 0x518
+
+#define MITE_LKCR 0x51c
+
+#define MITE_LKAR 0x520
+#define MITE_LLKAR 0x524
+#define MITE_BAR 0x528
+#define MITE_BCR 0x52c
+#define MITE_SAR 0x530
+#define MITE_WSCR 0x534
+#define MITE_WSER 0x538
+#define MITE_CHSR 0x53c
+#define MITE_FCR 0x540
+
+#define MITE_FIFO 0x80
+#define MITE_FIFOEND 0xff
+
+#define MITE_AMRAM 0x00
+#define MITE_AMDEVICE 0x01
+#define MITE_AMHOST_A32_SINGLE 0x09
+#define MITE_AMHOST_A24_SINGLE 0x39
+#define MITE_AMHOST_A16_SINGLE 0x29
+#define MITE_AMHOST_A32_BLOCK 0x0b
+#define MITE_AMHOST_A32D64_BLOCK 0x08
+#define MITE_AMHOST_A24_BLOCK 0x3b
+
+enum mite_registers {
+ MITE_IODWBSR = 0xc0, // IO Device Window Base Size Register
+ MITE_CSIGR = 0x460, // chip signature
+ MITE_IODWBSR_1 = 0xc4, // IO Device Window Base Size Register 1 (used by 6602 boards)
+ MITE_IODWCR_1 = 0xf4
+};
+
+enum MITE_IODWBSR_bits {
+ WENAB = 0x80, // window enable
+ WENAB_6602 = 0x8c // window enable for 6602 boards
+};
+
+#endif
+
diff --git a/drivers/gpib/tnt4882/tnt4882_gpib.c b/drivers/gpib/tnt4882/tnt4882_gpib.c
new file mode 100644
index 000000000000..c03a976b7380
--- /dev/null
+++ b/drivers/gpib/tnt4882/tnt4882_gpib.c
@@ -0,0 +1,1838 @@
+// 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 = 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;
+}
+
+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;
+
+ if (tnt4882_allocate_private(board))
+ return -ENOMEM;
+ 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;
+
+ if (tnt4882_allocate_private(board))
+ return -ENOMEM;
+ 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(sizeof(*info), GFP_KERNEL);
+ 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;
+
+ if (tnt4882_allocate_private(board))
+ return -ENOMEM;
+
+ 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);
generated by cgit v1.2.3 (git 2.46.0) at 2025-12-07 18:01:04 +0000