mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-11 15:56:42 +07:00
9a58a80a70
Convert code away from ->read_proc/->write_proc interfaces. Switch to
proc_create()/proc_create_data() which make addition of proc entries
reliable wrt NULL ->proc_fops, NULL ->data and so on.
Problem with ->read_proc et al is described here commit
786d7e1612 "Fix rmmod/read/write races in
/proc entries"
[akpm@linux-foundation.org: CONFIG_PROC_FS=n build fix]
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: Karsten Keil <keil@b1-systems.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
260 lines
6.6 KiB
C
260 lines
6.6 KiB
C
/* $Id: t1pci.c,v 1.1.2.2 2004/01/16 21:09:27 keil Exp $
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*
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* Module for AVM T1 PCI-card.
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*
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* Copyright 1999 by Carsten Paeth <calle@calle.de>
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*
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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/skbuff.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/ioport.h>
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#include <linux/pci.h>
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#include <linux/capi.h>
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#include <linux/init.h>
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#include <asm/io.h>
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#include <linux/isdn/capicmd.h>
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#include <linux/isdn/capiutil.h>
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#include <linux/isdn/capilli.h>
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#include "avmcard.h"
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#undef CONFIG_T1PCI_DEBUG
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#undef CONFIG_T1PCI_POLLDEBUG
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/* ------------------------------------------------------------- */
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static char *revision = "$Revision: 1.1.2.2 $";
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/* ------------------------------------------------------------- */
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static struct pci_device_id t1pci_pci_tbl[] = {
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{ PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_T1, PCI_ANY_ID, PCI_ANY_ID },
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(pci, t1pci_pci_tbl);
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MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM T1 PCI card");
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MODULE_AUTHOR("Carsten Paeth");
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MODULE_LICENSE("GPL");
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/* ------------------------------------------------------------- */
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static char *t1pci_procinfo(struct capi_ctr *ctrl);
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static int t1pci_add_card(struct capicardparams *p, struct pci_dev *pdev)
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{
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avmcard *card;
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avmctrl_info *cinfo;
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int retval;
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card = b1_alloc_card(1);
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if (!card) {
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printk(KERN_WARNING "t1pci: no memory.\n");
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retval = -ENOMEM;
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goto err;
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}
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card->dma = avmcard_dma_alloc("t1pci", pdev, 2048+128, 2048+128);
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if (!card->dma) {
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printk(KERN_WARNING "t1pci: no memory.\n");
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retval = -ENOMEM;
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goto err_free;
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}
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cinfo = card->ctrlinfo;
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sprintf(card->name, "t1pci-%x", p->port);
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card->port = p->port;
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card->irq = p->irq;
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card->membase = p->membase;
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card->cardtype = avm_t1pci;
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if (!request_region(card->port, AVMB1_PORTLEN, card->name)) {
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printk(KERN_WARNING "t1pci: ports 0x%03x-0x%03x in use.\n",
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card->port, card->port + AVMB1_PORTLEN);
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retval = -EBUSY;
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goto err_free_dma;
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}
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card->mbase = ioremap(card->membase, 64);
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if (!card->mbase) {
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printk(KERN_NOTICE "t1pci: can't remap memory at 0x%lx\n",
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card->membase);
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retval = -EIO;
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goto err_release_region;
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}
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b1dma_reset(card);
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retval = t1pci_detect(card);
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if (retval != 0) {
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if (retval < 6)
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printk(KERN_NOTICE "t1pci: NO card at 0x%x (%d)\n",
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card->port, retval);
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else
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printk(KERN_NOTICE "t1pci: card at 0x%x, but cable not connected or T1 has no power (%d)\n",
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card->port, retval);
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retval = -EIO;
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goto err_unmap;
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}
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b1dma_reset(card);
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retval = request_irq(card->irq, b1dma_interrupt, IRQF_SHARED, card->name, card);
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if (retval) {
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printk(KERN_ERR "t1pci: unable to get IRQ %d.\n", card->irq);
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retval = -EBUSY;
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goto err_unmap;
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}
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cinfo->capi_ctrl.owner = THIS_MODULE;
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cinfo->capi_ctrl.driver_name = "t1pci";
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cinfo->capi_ctrl.driverdata = cinfo;
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cinfo->capi_ctrl.register_appl = b1dma_register_appl;
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cinfo->capi_ctrl.release_appl = b1dma_release_appl;
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cinfo->capi_ctrl.send_message = b1dma_send_message;
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cinfo->capi_ctrl.load_firmware = b1dma_load_firmware;
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cinfo->capi_ctrl.reset_ctr = b1dma_reset_ctr;
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cinfo->capi_ctrl.procinfo = t1pci_procinfo;
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cinfo->capi_ctrl.proc_fops = &b1dmactl_proc_fops;
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strcpy(cinfo->capi_ctrl.name, card->name);
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retval = attach_capi_ctr(&cinfo->capi_ctrl);
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if (retval) {
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printk(KERN_ERR "t1pci: attach controller failed.\n");
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retval = -EBUSY;
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goto err_free_irq;
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}
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card->cardnr = cinfo->capi_ctrl.cnr;
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printk(KERN_INFO "t1pci: AVM T1 PCI at i/o %#x, irq %d, mem %#lx\n",
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card->port, card->irq, card->membase);
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pci_set_drvdata(pdev, card);
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return 0;
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err_free_irq:
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free_irq(card->irq, card);
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err_unmap:
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iounmap(card->mbase);
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err_release_region:
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release_region(card->port, AVMB1_PORTLEN);
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err_free_dma:
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avmcard_dma_free(card->dma);
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err_free:
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b1_free_card(card);
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err:
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return retval;
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}
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/* ------------------------------------------------------------- */
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static void t1pci_remove(struct pci_dev *pdev)
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{
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avmcard *card = pci_get_drvdata(pdev);
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avmctrl_info *cinfo = card->ctrlinfo;
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b1dma_reset(card);
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detach_capi_ctr(&cinfo->capi_ctrl);
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free_irq(card->irq, card);
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iounmap(card->mbase);
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release_region(card->port, AVMB1_PORTLEN);
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avmcard_dma_free(card->dma);
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b1_free_card(card);
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}
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/* ------------------------------------------------------------- */
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static char *t1pci_procinfo(struct capi_ctr *ctrl)
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{
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avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
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if (!cinfo)
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return "";
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sprintf(cinfo->infobuf, "%s %s 0x%x %d 0x%lx",
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cinfo->cardname[0] ? cinfo->cardname : "-",
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cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-",
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cinfo->card ? cinfo->card->port : 0x0,
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cinfo->card ? cinfo->card->irq : 0,
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cinfo->card ? cinfo->card->membase : 0
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);
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return cinfo->infobuf;
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}
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/* ------------------------------------------------------------- */
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static int __devinit t1pci_probe(struct pci_dev *dev,
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const struct pci_device_id *ent)
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{
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struct capicardparams param;
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int retval;
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if (pci_enable_device(dev) < 0) {
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printk(KERN_ERR "t1pci: failed to enable AVM-T1-PCI\n");
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return -ENODEV;
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}
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pci_set_master(dev);
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param.port = pci_resource_start(dev, 1);
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param.irq = dev->irq;
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param.membase = pci_resource_start(dev, 0);
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printk(KERN_INFO "t1pci: PCI BIOS reports AVM-T1-PCI at i/o %#x, irq %d, mem %#x\n",
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param.port, param.irq, param.membase);
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retval = t1pci_add_card(¶m, dev);
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if (retval != 0) {
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printk(KERN_ERR "t1pci: no AVM-T1-PCI at i/o %#x, irq %d detected, mem %#x\n",
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param.port, param.irq, param.membase);
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return -ENODEV;
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}
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return 0;
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}
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static struct pci_driver t1pci_pci_driver = {
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.name = "t1pci",
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.id_table = t1pci_pci_tbl,
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.probe = t1pci_probe,
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.remove = t1pci_remove,
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};
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static struct capi_driver capi_driver_t1pci = {
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.name = "t1pci",
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.revision = "1.0",
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};
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static int __init t1pci_init(void)
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{
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char *p;
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char rev[32];
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int err;
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if ((p = strchr(revision, ':')) != NULL && p[1]) {
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strlcpy(rev, p + 2, 32);
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if ((p = strchr(rev, '$')) != NULL && p > rev)
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*(p-1) = 0;
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} else
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strcpy(rev, "1.0");
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err = pci_register_driver(&t1pci_pci_driver);
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if (!err) {
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strlcpy(capi_driver_t1pci.revision, rev, 32);
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register_capi_driver(&capi_driver_t1pci);
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printk(KERN_INFO "t1pci: revision %s\n", rev);
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}
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return err;
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}
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static void __exit t1pci_exit(void)
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{
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unregister_capi_driver(&capi_driver_t1pci);
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pci_unregister_driver(&t1pci_pci_driver);
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}
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module_init(t1pci_init);
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module_exit(t1pci_exit);
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