74ba9207e1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 675 mass ave cambridge ma 02139 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 441 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520071858.739733335@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
157 lines
3.5 KiB
C
157 lines
3.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
Mantis PCI bridge driver
|
|
|
|
Copyright (C) Manu Abraham (abraham.manu@gmail.com)
|
|
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/moduleparam.h>
|
|
#include <linux/kernel.h>
|
|
#include <asm/io.h>
|
|
#include <asm/page.h>
|
|
#include <linux/kmod.h>
|
|
#include <linux/vmalloc.h>
|
|
#include <linux/init.h>
|
|
#include <linux/device.h>
|
|
#include <linux/pci.h>
|
|
|
|
#include <asm/irq.h>
|
|
#include <linux/signal.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/interrupt.h>
|
|
|
|
#include <media/dmxdev.h>
|
|
#include <media/dvbdev.h>
|
|
#include <media/dvb_demux.h>
|
|
#include <media/dvb_frontend.h>
|
|
#include <media/dvb_net.h>
|
|
|
|
#include "mantis_common.h"
|
|
#include "mantis_reg.h"
|
|
#include "mantis_pci.h"
|
|
|
|
#define DRIVER_NAME "Mantis Core"
|
|
|
|
int mantis_pci_init(struct mantis_pci *mantis)
|
|
{
|
|
u8 latency;
|
|
struct mantis_hwconfig *config = mantis->hwconfig;
|
|
struct pci_dev *pdev = mantis->pdev;
|
|
int err, ret = 0;
|
|
|
|
dprintk(MANTIS_ERROR, 0, "found a %s PCI %s device on (%02x:%02x.%x),\n",
|
|
config->model_name,
|
|
config->dev_type,
|
|
mantis->pdev->bus->number,
|
|
PCI_SLOT(mantis->pdev->devfn),
|
|
PCI_FUNC(mantis->pdev->devfn));
|
|
|
|
err = pci_enable_device(pdev);
|
|
if (err != 0) {
|
|
ret = -ENODEV;
|
|
dprintk(MANTIS_ERROR, 1, "ERROR: PCI enable failed <%i>", err);
|
|
goto fail0;
|
|
}
|
|
|
|
err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
|
|
if (err != 0) {
|
|
dprintk(MANTIS_ERROR, 1, "ERROR: Unable to obtain 32 bit DMA <%i>", err);
|
|
ret = -ENOMEM;
|
|
goto fail1;
|
|
}
|
|
|
|
pci_set_master(pdev);
|
|
|
|
if (!request_mem_region(pci_resource_start(pdev, 0),
|
|
pci_resource_len(pdev, 0),
|
|
DRIVER_NAME)) {
|
|
|
|
dprintk(MANTIS_ERROR, 1, "ERROR: BAR0 Request failed !");
|
|
ret = -ENODEV;
|
|
goto fail1;
|
|
}
|
|
|
|
mantis->mmio = ioremap(pci_resource_start(pdev, 0),
|
|
pci_resource_len(pdev, 0));
|
|
|
|
if (!mantis->mmio) {
|
|
dprintk(MANTIS_ERROR, 1, "ERROR: BAR0 remap failed !");
|
|
ret = -ENODEV;
|
|
goto fail2;
|
|
}
|
|
|
|
pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &latency);
|
|
mantis->latency = latency;
|
|
mantis->revision = pdev->revision;
|
|
|
|
dprintk(MANTIS_ERROR, 0, " Mantis Rev %d [%04x:%04x], ",
|
|
mantis->revision,
|
|
mantis->pdev->subsystem_vendor,
|
|
mantis->pdev->subsystem_device);
|
|
|
|
dprintk(MANTIS_ERROR, 0,
|
|
"irq: %d, latency: %d\n memory: 0x%lx, mmio: 0x%p\n",
|
|
mantis->pdev->irq,
|
|
mantis->latency,
|
|
mantis->mantis_addr,
|
|
mantis->mmio);
|
|
|
|
err = request_irq(pdev->irq,
|
|
config->irq_handler,
|
|
IRQF_SHARED,
|
|
DRIVER_NAME,
|
|
mantis);
|
|
|
|
if (err != 0) {
|
|
|
|
dprintk(MANTIS_ERROR, 1, "ERROR: IRQ registration failed ! <%d>", err);
|
|
ret = -ENODEV;
|
|
goto fail3;
|
|
}
|
|
|
|
pci_set_drvdata(pdev, mantis);
|
|
return ret;
|
|
|
|
/* Error conditions */
|
|
fail3:
|
|
dprintk(MANTIS_ERROR, 1, "ERROR: <%d> I/O unmap", ret);
|
|
if (mantis->mmio)
|
|
iounmap(mantis->mmio);
|
|
|
|
fail2:
|
|
dprintk(MANTIS_ERROR, 1, "ERROR: <%d> releasing regions", ret);
|
|
release_mem_region(pci_resource_start(pdev, 0),
|
|
pci_resource_len(pdev, 0));
|
|
|
|
fail1:
|
|
dprintk(MANTIS_ERROR, 1, "ERROR: <%d> disabling device", ret);
|
|
pci_disable_device(pdev);
|
|
|
|
fail0:
|
|
dprintk(MANTIS_ERROR, 1, "ERROR: <%d> exiting", ret);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(mantis_pci_init);
|
|
|
|
void mantis_pci_exit(struct mantis_pci *mantis)
|
|
{
|
|
struct pci_dev *pdev = mantis->pdev;
|
|
|
|
dprintk(MANTIS_NOTICE, 1, " mem: 0x%p", mantis->mmio);
|
|
free_irq(pdev->irq, mantis);
|
|
if (mantis->mmio) {
|
|
iounmap(mantis->mmio);
|
|
release_mem_region(pci_resource_start(pdev, 0),
|
|
pci_resource_len(pdev, 0));
|
|
}
|
|
|
|
pci_disable_device(pdev);
|
|
}
|
|
EXPORT_SYMBOL_GPL(mantis_pci_exit);
|
|
|
|
MODULE_DESCRIPTION("Mantis PCI DTV bridge driver");
|
|
MODULE_AUTHOR("Manu Abraham");
|
|
MODULE_LICENSE("GPL");
|