mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-08-09 06:14:34 +02:00
Ethan Nelson-MooreandJakub Kicinski
eb8ffe14a5
When compiling the com20020-pci driver with W=1, I received the following warning: drivers/net/arcnet/com20020-pci.c:224:71: warning: ‘%d’ directive output may be truncated writing between 1 and 11 bytes into a region of size between 10 and 11 [-Wformat-truncation=] 224 | snprintf(dev->name, sizeof(dev->name), "arc%d-%d", dev->dev_id, i); In reality, this does not represent a problem, because i is bounded by the .devcount field in struct com20020_pci_card_info, which is statically defined for each card and very small. Quiet the invalid warning by changing the type of i and the .devcount field to be narrower. Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com> Link: https://patch.msgid.link/20260521001631.45434-8-enelsonmoore@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
557 lines
12 KiB
C
557 lines
12 KiB
C
/*
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* Linux ARCnet driver - COM20020 PCI support
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* Contemporary Controls PCI20 and SOHARD SH-ARC PCI
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*
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* Written 1994-1999 by Avery Pennarun,
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* based on an ISA version by David Woodhouse.
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* Written 1999-2000 by Martin Mares <mj@ucw.cz>.
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* Derived from skeleton.c by Donald Becker.
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*
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* Special thanks to Contemporary Controls, Inc. (www.ccontrols.com)
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* for sponsoring the further development of this driver.
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*
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* **********************
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*
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* The original copyright of skeleton.c was as follows:
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*
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* skeleton.c Written 1993 by Donald Becker.
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* Copyright 1993 United States Government as represented by the
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* Director, National Security Agency. This software may only be used
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* and distributed according to the terms of the GNU General Public License as
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* modified by SRC, incorporated herein by reference.
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*
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* **********************
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*
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* For more details, see drivers/net/arcnet.c
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*
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* **********************
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*/
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#define pr_fmt(fmt) "arcnet:" KBUILD_MODNAME ": " fmt
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/ioport.h>
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#include <linux/errno.h>
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#include <linux/netdevice.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/pci.h>
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#include <linux/list.h>
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#include <linux/io.h>
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#include <linux/leds.h>
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#include "arcdevice.h"
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#include "com20020.h"
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/* Module parameters */
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static int node;
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static char device[9]; /* use eg. device="arc1" to change name */
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static int timeout = 3;
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static int backplane;
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static int clockp;
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static int clockm;
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module_param(node, int, 0);
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module_param_string(device, device, sizeof(device), 0);
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module_param(timeout, int, 0);
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module_param(backplane, int, 0);
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module_param(clockp, int, 0);
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module_param(clockm, int, 0);
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MODULE_DESCRIPTION("ARCnet COM20020 chipset PCI driver");
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MODULE_LICENSE("GPL");
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static void led_tx_set(struct led_classdev *led_cdev,
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enum led_brightness value)
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{
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struct com20020_dev *card;
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struct com20020_priv *priv;
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struct com20020_pci_card_info *ci;
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card = container_of(led_cdev, struct com20020_dev, tx_led);
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priv = card->pci_priv;
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ci = priv->ci;
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outb(!!value, priv->misc + ci->leds[card->index].green);
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}
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static void led_recon_set(struct led_classdev *led_cdev,
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enum led_brightness value)
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{
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struct com20020_dev *card;
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struct com20020_priv *priv;
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struct com20020_pci_card_info *ci;
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card = container_of(led_cdev, struct com20020_dev, recon_led);
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priv = card->pci_priv;
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ci = priv->ci;
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outb(!!value, priv->misc + ci->leds[card->index].red);
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}
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static ssize_t backplane_mode_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct net_device *net_dev = to_net_dev(dev);
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struct arcnet_local *lp = netdev_priv(net_dev);
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return sprintf(buf, "%s\n", lp->backplane ? "true" : "false");
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}
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static DEVICE_ATTR_RO(backplane_mode);
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static struct attribute *com20020_state_attrs[] = {
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&dev_attr_backplane_mode.attr,
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NULL,
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};
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static const struct attribute_group com20020_state_group = {
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.name = NULL,
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.attrs = com20020_state_attrs,
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};
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static struct com20020_pci_card_info card_info_2p5mbit;
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static void com20020pci_remove(struct pci_dev *pdev);
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static int com20020pci_probe(struct pci_dev *pdev,
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const struct pci_device_id *id)
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{
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struct com20020_pci_card_info *ci;
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struct com20020_pci_channel_map *mm;
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struct net_device *dev;
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struct arcnet_local *lp;
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struct com20020_priv *priv;
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int ioaddr, ret;
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u8 i;
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struct resource *r;
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ret = 0;
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if (pci_enable_device(pdev))
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return -EIO;
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priv = devm_kzalloc(&pdev->dev, sizeof(struct com20020_priv),
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GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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ci = (struct com20020_pci_card_info *)id->driver_data;
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if (!ci)
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ci = &card_info_2p5mbit;
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priv->ci = ci;
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mm = &ci->misc_map;
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pci_set_drvdata(pdev, priv);
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INIT_LIST_HEAD(&priv->list_dev);
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if (mm->size) {
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ioaddr = pci_resource_start(pdev, mm->bar) + mm->offset;
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r = devm_request_region(&pdev->dev, ioaddr, mm->size,
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"com20020-pci");
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if (!r) {
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pr_err("IO region %xh-%xh already allocated.\n",
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ioaddr, ioaddr + mm->size - 1);
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return -EBUSY;
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}
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priv->misc = ioaddr;
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}
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for (i = 0; i < ci->devcount; i++) {
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struct com20020_pci_channel_map *cm = &ci->chan_map_tbl[i];
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struct com20020_dev *card;
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int dev_id_mask = 0xf;
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dev = alloc_arcdev(device);
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if (!dev) {
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ret = -ENOMEM;
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break;
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}
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dev->dev_port = i;
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dev->netdev_ops = &com20020_netdev_ops;
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lp = netdev_priv(dev);
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arc_printk(D_NORMAL, dev, "%s Controls\n", ci->name);
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ioaddr = pci_resource_start(pdev, cm->bar) + cm->offset;
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r = devm_request_region(&pdev->dev, ioaddr, cm->size,
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"com20020-pci");
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if (!r) {
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pr_err("IO region %xh-%xh already allocated\n",
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ioaddr, ioaddr + cm->size - 1);
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ret = -EBUSY;
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goto err_free_arcdev;
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}
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/* Dummy access after Reset
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* ARCNET controller needs
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* this access to detect bustype
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*/
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outb(0x00, ioaddr + COM20020_REG_W_COMMAND);
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inb(ioaddr + COM20020_REG_R_DIAGSTAT);
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SET_NETDEV_DEV(dev, &pdev->dev);
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dev->base_addr = ioaddr;
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arcnet_set_addr(dev, node);
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dev->sysfs_groups[0] = &com20020_state_group;
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dev->irq = pdev->irq;
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lp->card_name = "PCI COM20020";
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lp->card_flags = ci->flags;
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lp->backplane = backplane;
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lp->clockp = clockp & 7;
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lp->clockm = clockm & 3;
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lp->timeout = timeout;
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lp->hw.owner = THIS_MODULE;
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lp->backplane = (inb(priv->misc) >> (2 + i)) & 0x1;
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if (!strncmp(ci->name, "EAE PLX-PCI FB2", 15))
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lp->backplane = 1;
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if (ci->flags & ARC_HAS_ROTARY) {
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/* Get the dev_id from the PLX rotary coder */
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if (!strncmp(ci->name, "EAE PLX-PCI MA1", 15))
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dev_id_mask = 0x3;
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dev->dev_id = (inb(priv->misc + ci->rotary) >> 4) & dev_id_mask;
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snprintf(dev->name, sizeof(dev->name), "arc%d-%d", dev->dev_id, i);
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}
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if (inb(ioaddr + COM20020_REG_R_STATUS) == 0xFF) {
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pr_err("IO address %Xh is empty!\n", ioaddr);
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ret = -EIO;
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goto err_free_arcdev;
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}
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if (com20020_check(dev)) {
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ret = -EIO;
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goto err_free_arcdev;
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}
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ret = com20020_found(dev, IRQF_SHARED);
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if (ret)
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goto err_free_arcdev;
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card = devm_kzalloc(&pdev->dev, sizeof(struct com20020_dev),
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GFP_KERNEL);
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if (!card) {
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ret = -ENOMEM;
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goto err_free_arcdev;
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}
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card->index = i;
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card->pci_priv = priv;
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if (ci->flags & ARC_HAS_LED) {
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card->tx_led.brightness_set = led_tx_set;
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card->tx_led.default_trigger = devm_kasprintf(&pdev->dev,
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GFP_KERNEL, "arc%d-%d-tx",
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dev->dev_id, i);
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if (!card->tx_led.default_trigger) {
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ret = -ENOMEM;
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goto err_free_arcdev;
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}
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card->tx_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
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"pci:green:tx:%d-%d",
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dev->dev_id, i);
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if (!card->tx_led.name) {
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ret = -ENOMEM;
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goto err_free_arcdev;
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}
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card->tx_led.dev = &dev->dev;
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card->recon_led.brightness_set = led_recon_set;
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card->recon_led.default_trigger = devm_kasprintf(&pdev->dev,
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GFP_KERNEL, "arc%d-%d-recon",
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dev->dev_id, i);
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if (!card->recon_led.default_trigger) {
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ret = -ENOMEM;
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goto err_free_arcdev;
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}
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card->recon_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
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"pci:red:recon:%d-%d",
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dev->dev_id, i);
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if (!card->recon_led.name) {
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ret = -ENOMEM;
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goto err_free_arcdev;
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}
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card->recon_led.dev = &dev->dev;
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ret = devm_led_classdev_register(&pdev->dev, &card->tx_led);
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if (ret)
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goto err_free_arcdev;
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ret = devm_led_classdev_register(&pdev->dev, &card->recon_led);
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if (ret)
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goto err_free_arcdev;
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dev_set_drvdata(&dev->dev, card);
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devm_arcnet_led_init(dev, dev->dev_id, i);
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}
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card->dev = dev;
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list_add(&card->list, &priv->list_dev);
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continue;
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err_free_arcdev:
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free_arcdev(dev);
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break;
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}
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if (ret)
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com20020pci_remove(pdev);
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return ret;
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}
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static void com20020pci_remove(struct pci_dev *pdev)
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{
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struct com20020_dev *card, *tmpcard;
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struct com20020_priv *priv;
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priv = pci_get_drvdata(pdev);
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list_for_each_entry_safe(card, tmpcard, &priv->list_dev, list) {
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struct net_device *dev = card->dev;
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unregister_netdev(dev);
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free_irq(dev->irq, dev);
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free_arcdev(dev);
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}
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}
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static struct com20020_pci_card_info card_info_10mbit = {
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.name = "ARC-PCI",
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.devcount = 1,
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.chan_map_tbl = {
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{
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.bar = 2,
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.offset = 0x00,
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.size = 0x08,
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},
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},
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.flags = ARC_CAN_10MBIT,
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};
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static struct com20020_pci_card_info card_info_5mbit = {
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.name = "ARC-PCI",
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.devcount = 1,
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.chan_map_tbl = {
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{
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.bar = 2,
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.offset = 0x00,
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.size = 0x08,
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},
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},
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.flags = ARC_IS_5MBIT,
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};
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static struct com20020_pci_card_info card_info_2p5mbit = {
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.name = "ARC-PCI",
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.devcount = 1,
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.chan_map_tbl = {
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{
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.bar = 2,
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.offset = 0x00,
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.size = 0x08,
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},
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},
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};
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static struct com20020_pci_card_info card_info_sohard = {
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.name = "SOHARD SH ARC-PCI",
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.devcount = 1,
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/* SOHARD needs PCI base addr 4 */
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.chan_map_tbl = {
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{
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.bar = 4,
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.offset = 0x00,
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.size = 0x08
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},
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},
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.flags = ARC_CAN_10MBIT,
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};
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static struct com20020_pci_card_info card_info_eae_arc1 = {
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.name = "EAE PLX-PCI ARC1",
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.devcount = 1,
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.chan_map_tbl = {
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{
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.bar = 2,
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.offset = 0x00,
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.size = 0x08,
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},
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},
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.misc_map = {
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.bar = 2,
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.offset = 0x10,
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.size = 0x04,
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},
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.leds = {
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{
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.green = 0x0,
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.red = 0x1,
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},
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},
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.rotary = 0x0,
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.flags = ARC_HAS_ROTARY | ARC_HAS_LED | ARC_CAN_10MBIT,
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};
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static struct com20020_pci_card_info card_info_eae_ma1 = {
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.name = "EAE PLX-PCI MA1",
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.devcount = 2,
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.chan_map_tbl = {
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{
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.bar = 2,
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.offset = 0x00,
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.size = 0x08,
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}, {
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.bar = 2,
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.offset = 0x08,
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.size = 0x08,
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}
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},
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.misc_map = {
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.bar = 2,
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.offset = 0x10,
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.size = 0x04,
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},
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.leds = {
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{
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.green = 0x0,
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.red = 0x1,
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}, {
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.green = 0x2,
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.red = 0x3,
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},
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},
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.rotary = 0x0,
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.flags = ARC_HAS_ROTARY | ARC_HAS_LED | ARC_CAN_10MBIT,
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};
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static struct com20020_pci_card_info card_info_eae_fb2 = {
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.name = "EAE PLX-PCI FB2",
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.devcount = 1,
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.chan_map_tbl = {
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{
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.bar = 2,
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.offset = 0x00,
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.size = 0x08,
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},
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},
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.misc_map = {
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.bar = 2,
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.offset = 0x10,
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.size = 0x04,
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},
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.leds = {
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{
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.green = 0x0,
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.red = 0x1,
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},
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},
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.rotary = 0x0,
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.flags = ARC_HAS_ROTARY | ARC_HAS_LED | ARC_CAN_10MBIT,
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};
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static const struct pci_device_id com20020pci_id_table[] = {
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{
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PCI_DEVICE(0x1571, 0xa001),
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.driver_data = 0,
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}, {
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PCI_DEVICE(0x1571, 0xa002),
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.driver_data = 0,
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}, {
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PCI_DEVICE(0x1571, 0xa003),
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.driver_data = 0,
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}, {
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PCI_DEVICE(0x1571, 0xa004),
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.driver_data = 0,
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}, {
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PCI_DEVICE(0x1571, 0xa005),
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.driver_data = 0,
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}, {
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PCI_DEVICE(0x1571, 0xa006),
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.driver_data = 0,
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}, {
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PCI_DEVICE(0x1571, 0xa007),
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.driver_data = 0,
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}, {
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PCI_DEVICE(0x1571, 0xa008),
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.driver_data = 0,
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}, {
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PCI_DEVICE(0x1571, 0xa009),
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.driver_data = (kernel_ulong_t)&card_info_5mbit,
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}, {
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PCI_DEVICE(0x1571, 0xa00a),
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.driver_data = (kernel_ulong_t)&card_info_5mbit,
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}, {
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PCI_DEVICE(0x1571, 0xa00b),
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.driver_data = (kernel_ulong_t)&card_info_5mbit,
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}, {
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PCI_DEVICE(0x1571, 0xa00c),
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.driver_data = (kernel_ulong_t)&card_info_5mbit,
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}, {
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PCI_DEVICE(0x1571, 0xa00d),
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.driver_data = (kernel_ulong_t)&card_info_5mbit,
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}, {
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PCI_DEVICE(0x1571, 0xa00e),
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.driver_data = (kernel_ulong_t)&card_info_5mbit,
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}, {
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PCI_DEVICE(0x1571, 0xa201),
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.driver_data = (kernel_ulong_t)&card_info_10mbit,
|
|
}, {
|
|
PCI_DEVICE(0x1571, 0xa202),
|
|
.driver_data = (kernel_ulong_t)&card_info_10mbit,
|
|
}, {
|
|
PCI_DEVICE(0x1571, 0xa203),
|
|
.driver_data = (kernel_ulong_t)&card_info_10mbit,
|
|
}, {
|
|
PCI_DEVICE(0x1571, 0xa204),
|
|
.driver_data = (kernel_ulong_t)&card_info_10mbit,
|
|
}, {
|
|
PCI_DEVICE(0x1571, 0xa205),
|
|
.driver_data = (kernel_ulong_t)&card_info_10mbit,
|
|
}, {
|
|
PCI_DEVICE(0x1571, 0xa206),
|
|
.driver_data = (kernel_ulong_t)&card_info_10mbit,
|
|
}, {
|
|
PCI_DEVICE_SUB(0x10B5, 0x9030, 0x10B5, 0x2978),
|
|
.driver_data = (kernel_ulong_t)&card_info_sohard,
|
|
}, {
|
|
PCI_DEVICE_SUB(0x10B5, 0x9050, 0x10B5, 0x2273),
|
|
.driver_data = (kernel_ulong_t)&card_info_sohard,
|
|
}, {
|
|
PCI_DEVICE_SUB(0x10B5, 0x9050, 0x10B5, 0x3263),
|
|
.driver_data = (kernel_ulong_t)&card_info_eae_arc1,
|
|
}, {
|
|
PCI_DEVICE_SUB(0x10B5, 0x9050, 0x10B5, 0x3292),
|
|
.driver_data = (kernel_ulong_t)&card_info_eae_ma1,
|
|
}, {
|
|
PCI_DEVICE_SUB(0x10B5, 0x9050, 0x10B5, 0x3294),
|
|
.driver_data = (kernel_ulong_t)&card_info_eae_fb2,
|
|
}, {
|
|
PCI_DEVICE(0x14BA, 0x6000),
|
|
.driver_data = (kernel_ulong_t)&card_info_10mbit,
|
|
}, {
|
|
PCI_DEVICE(0x10B5, 0x2200),
|
|
.driver_data = (kernel_ulong_t)&card_info_10mbit,
|
|
},
|
|
{ }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pci, com20020pci_id_table);
|
|
|
|
static struct pci_driver com20020pci_driver = {
|
|
.name = "com20020",
|
|
.id_table = com20020pci_id_table,
|
|
.probe = com20020pci_probe,
|
|
.remove = com20020pci_remove,
|
|
};
|
|
|
|
module_pci_driver(com20020pci_driver);
|