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e6ab504633
Move the gpib drivers out of staging and into the "real" part of the kernel. This entails: - Remove the gpib Kconfig menu and Makefile build rule from staging. - Remove gpib/uapi from the header file search path in subdir-ccflags of the gpib Makefile - move the gpib/uapi files to include/uapi/linux - Move the gpib tree out of staging to drivers. - Remove the word "Linux" from the gpib Kconfig file. - Add the gpib Kconfig menu and Makefile build rule to drivers Signed-off-by: Dave Penkler <dpenkler@gmail.com> Link: https://patch.msgid.link/20251117144021.23569-5-dpenkler@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
134 lines
3.2 KiB
C
134 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Hardware driver for NI Mite PCI interface chip,
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* adapted from COMEDI
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*
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* Copyright (C) 1997-8 David A. Schleef
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* Copyright (C) 2002 Frank Mori Hess
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*
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* The PCI-MIO E series driver was originally written by
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* Tomasz Motylewski <...>, and ported to comedi by ds.
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*
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* References for specifications:
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*
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* 321747b.pdf Register Level Programmer Manual (obsolete)
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* 321747c.pdf Register Level Programmer Manual (new)
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* DAQ-STC reference manual
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*
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* Other possibly relevant info:
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*
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* 320517c.pdf User manual (obsolete)
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* 320517f.pdf User manual (new)
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* 320889a.pdf delete
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* 320906c.pdf maximum signal ratings
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* 321066a.pdf about 16x
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* 321791a.pdf discontinuation of at-mio-16e-10 rev. c
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* 321808a.pdf about at-mio-16e-10 rev P
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* 321837a.pdf discontinuation of at-mio-16de-10 rev d
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* 321838a.pdf about at-mio-16de-10 rev N
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/ioport.h>
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#include <linux/delay.h>
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#include <linux/mm.h>
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#include <linux/interrupt.h>
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#include <linux/pci.h>
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#include <linux/io.h>
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#include <linux/slab.h>
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#include "mite.h"
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#define PCI_MITE_SIZE 4096
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#define PCI_DAQ_SIZE 4096
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struct mite_struct *mite_devices;
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#define TOP_OF_PAGE(x) ((x) | (~(PAGE_MASK)))
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void mite_init(void)
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{
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struct pci_dev *pcidev;
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struct mite_struct *mite;
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for (pcidev = pci_get_device(PCI_VENDOR_ID_NATINST, PCI_ANY_ID, NULL);
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pcidev;
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pcidev = pci_get_device(PCI_VENDOR_ID_NATINST, PCI_ANY_ID, pcidev)) {
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mite = kzalloc(sizeof(*mite), GFP_KERNEL);
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if (!mite)
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return;
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mite->pcidev = pcidev;
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pci_dev_get(mite->pcidev);
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mite->next = mite_devices;
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mite_devices = mite;
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}
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}
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int mite_setup(struct mite_struct *mite)
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{
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u32 addr;
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if (pci_enable_device(mite->pcidev)) {
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pr_err("mite: error enabling mite.\n");
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return -EIO;
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}
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pci_set_master(mite->pcidev);
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if (pci_request_regions(mite->pcidev, "mite")) {
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pr_err("mite: failed to request mite io regions.\n");
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return -EIO;
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}
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addr = pci_resource_start(mite->pcidev, 0);
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mite->mite_phys_addr = addr;
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mite->mite_io_addr = ioremap(addr, pci_resource_len(mite->pcidev, 0));
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if (!mite->mite_io_addr) {
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pr_err("mite: failed to remap mite io memory address.\n");
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return -ENOMEM;
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}
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addr = pci_resource_start(mite->pcidev, 1);
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mite->daq_phys_addr = addr;
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mite->daq_io_addr = ioremap(mite->daq_phys_addr, pci_resource_len(mite->pcidev, 1));
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if (!mite->daq_io_addr) {
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pr_err("mite: failed to remap daq io memory address.\n");
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return -ENOMEM;
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}
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writel(mite->daq_phys_addr | WENAB, mite->mite_io_addr + MITE_IODWBSR);
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mite->used = 1;
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return 0;
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}
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void mite_cleanup(void)
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{
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struct mite_struct *mite, *next;
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for (mite = mite_devices; mite; mite = next) {
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next = mite->next;
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if (mite->pcidev)
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pci_dev_put(mite->pcidev);
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kfree(mite);
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}
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}
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void mite_unsetup(struct mite_struct *mite)
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{
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if (!mite)
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return;
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if (mite->mite_io_addr) {
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iounmap(mite->mite_io_addr);
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mite->mite_io_addr = NULL;
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}
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if (mite->daq_io_addr) {
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iounmap(mite->daq_io_addr);
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mite->daq_io_addr = NULL;
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}
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if (mite->mite_phys_addr) {
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pci_release_regions(mite->pcidev);
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pci_disable_device(mite->pcidev);
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mite->mite_phys_addr = 0;
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}
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mite->used = 0;
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}
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