/* Mantis PCI bridge driver Copyright (C) Manu Abraham (abraham.manu@gmail.com) 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. */ #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 "dmxdev.h" #include "dvbdev.h" #include "dvb_demux.h" #include "dvb_frontend.h" #include "dvb_net.h" #include "mantis_common.h" #include "mantis_reg.h" #include "mantis_pci.h" #define DRIVER_NAME "Mantis Core" int __devinit 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); pci_set_drvdata(pdev, NULL); 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); pci_set_drvdata(pdev, NULL); } EXPORT_SYMBOL_GPL(mantis_pci_exit); MODULE_DESCRIPTION("Mantis PCI DTV bridge driver"); MODULE_AUTHOR("Manu Abraham"); MODULE_LICENSE("GPL");