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linux-stable/drivers/net/arcnet/com20020-pci.c
Jakub Kicinski 13b5ffa0e2 net: remove single-byte netdev->dev_addr writes 
Make the drivers which use single-byte netdev addresses
(netdev->addr_len == 1) use the appropriate address setting
helpers.

arcnet copies from int variables and io reads a lot, so
add a helper for arcnet drivers to use.

Similar helper could be reused for phonet and appletalk
but there isn't any good central location where we could
put it, and netdevice.h is already very crowded.

Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com> # for HSI
Link: https://lore.kernel.org/r/20211012142757.4124842-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-10-13 10:03:59 -07:00

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/*
* Linux ARCnet driver - COM20020 PCI support
* Contemporary Controls PCI20 and SOHARD SH-ARC PCI
*
* Written 1994-1999 by Avery Pennarun,
* based on an ISA version by David Woodhouse.
* Written 1999-2000 by Martin Mares <mj@ucw.cz>.
* Derived from skeleton.c by Donald Becker.
*
* Special thanks to Contemporary Controls, Inc. (www.ccontrols.com)
* for sponsoring the further development of this driver.
*
* **********************
*
* The original copyright of skeleton.c was as follows:
*
* skeleton.c Written 1993 by Donald Becker.
* Copyright 1993 United States Government as represented by the
* Director, National Security Agency. This software may only be used
* and distributed according to the terms of the GNU General Public License as
* modified by SRC, incorporated herein by reference.
*
* **********************
*
* For more details, see drivers/net/arcnet.c
*
* **********************
*/
#define pr_fmt(fmt) "arcnet:" KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/ioport.h>
#include <linux/errno.h>
#include <linux/netdevice.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/list.h>
#include <linux/io.h>
#include <linux/leds.h>
#include "arcdevice.h"
#include "com20020.h"
/* Module parameters */
static int node;
static char device[9]; /* use eg. device="arc1" to change name */
static int timeout = 3;
static int backplane;
static int clockp;
static int clockm;
module_param(node, int, 0);
module_param_string(device, device, sizeof(device), 0);
module_param(timeout, int, 0);
module_param(backplane, int, 0);
module_param(clockp, int, 0);
module_param(clockm, int, 0);
MODULE_LICENSE("GPL");
static void led_tx_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
struct com20020_dev *card;
struct com20020_priv *priv;
struct com20020_pci_card_info *ci;
card = container_of(led_cdev, struct com20020_dev, tx_led);
priv = card->pci_priv;
ci = priv->ci;
outb(!!value, priv->misc + ci->leds[card->index].green);
}
static void led_recon_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
struct com20020_dev *card;
struct com20020_priv *priv;
struct com20020_pci_card_info *ci;
card = container_of(led_cdev, struct com20020_dev, recon_led);
priv = card->pci_priv;
ci = priv->ci;
outb(!!value, priv->misc + ci->leds[card->index].red);
}
static ssize_t backplane_mode_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct net_device *net_dev = to_net_dev(dev);
struct arcnet_local *lp = netdev_priv(net_dev);
return sprintf(buf, "%s\n", lp->backplane ? "true" : "false");
}
static DEVICE_ATTR_RO(backplane_mode);
static struct attribute *com20020_state_attrs[] = {
&dev_attr_backplane_mode.attr,
NULL,
};
static const struct attribute_group com20020_state_group = {
.name = NULL,
.attrs = com20020_state_attrs,
};
static void com20020pci_remove(struct pci_dev *pdev);
static int com20020pci_probe(struct pci_dev *pdev,
const struct pci_device_id *id)
{
struct com20020_pci_card_info *ci;
struct com20020_pci_channel_map *mm;
struct net_device *dev;
struct arcnet_local *lp;
struct com20020_priv *priv;
int i, ioaddr, ret;
struct resource *r;
ret = 0;
if (pci_enable_device(pdev))
return -EIO;
priv = devm_kzalloc(&pdev->dev, sizeof(struct com20020_priv),
GFP_KERNEL);
if (!priv)
return -ENOMEM;
ci = (struct com20020_pci_card_info *)id->driver_data;
priv->ci = ci;
mm = &ci->misc_map;
pci_set_drvdata(pdev, priv);
INIT_LIST_HEAD(&priv->list_dev);
if (mm->size) {
ioaddr = pci_resource_start(pdev, mm->bar) + mm->offset;
r = devm_request_region(&pdev->dev, ioaddr, mm->size,
"com20020-pci");
if (!r) {
pr_err("IO region %xh-%xh already allocated.\n",
ioaddr, ioaddr + mm->size - 1);
return -EBUSY;
}
priv->misc = ioaddr;
}
for (i = 0; i < ci->devcount; i++) {
struct com20020_pci_channel_map *cm = &ci->chan_map_tbl[i];
struct com20020_dev *card;
int dev_id_mask = 0xf;
dev = alloc_arcdev(device);
if (!dev) {
ret = -ENOMEM;
break;
}
dev->dev_port = i;
dev->netdev_ops = &com20020_netdev_ops;
lp = netdev_priv(dev);
arc_printk(D_NORMAL, dev, "%s Controls\n", ci->name);
ioaddr = pci_resource_start(pdev, cm->bar) + cm->offset;
r = devm_request_region(&pdev->dev, ioaddr, cm->size,
"com20020-pci");
if (!r) {
pr_err("IO region %xh-%xh already allocated\n",
ioaddr, ioaddr + cm->size - 1);
ret = -EBUSY;
goto err_free_arcdev;
}
/* Dummy access after Reset
* ARCNET controller needs
* this access to detect bustype
*/
arcnet_outb(0x00, ioaddr, COM20020_REG_W_COMMAND);
arcnet_inb(ioaddr, COM20020_REG_R_DIAGSTAT);
SET_NETDEV_DEV(dev, &pdev->dev);
dev->base_addr = ioaddr;
arcnet_set_addr(dev, node);
dev->sysfs_groups[0] = &com20020_state_group;
dev->irq = pdev->irq;
lp->card_name = "PCI COM20020";
lp->card_flags = ci->flags;
lp->backplane = backplane;
lp->clockp = clockp & 7;
lp->clockm = clockm & 3;
lp->timeout = timeout;
lp->hw.owner = THIS_MODULE;
lp->backplane = (inb(priv->misc) >> (2 + i)) & 0x1;
if (!strncmp(ci->name, "EAE PLX-PCI FB2", 15))
lp->backplane = 1;
/* Get the dev_id from the PLX rotary coder */
if (!strncmp(ci->name, "EAE PLX-PCI MA1", 15))
dev_id_mask = 0x3;
dev->dev_id = (inb(priv->misc + ci->rotary) >> 4) & dev_id_mask;
snprintf(dev->name, sizeof(dev->name), "arc%d-%d", dev->dev_id, i);
if (arcnet_inb(ioaddr, COM20020_REG_R_STATUS) == 0xFF) {
pr_err("IO address %Xh is empty!\n", ioaddr);
ret = -EIO;
goto err_free_arcdev;
}
if (com20020_check(dev)) {
ret = -EIO;
goto err_free_arcdev;
}
card = devm_kzalloc(&pdev->dev, sizeof(struct com20020_dev),
GFP_KERNEL);
if (!card) {
ret = -ENOMEM;
goto err_free_arcdev;
}
card->index = i;
card->pci_priv = priv;
card->tx_led.brightness_set = led_tx_set;
card->tx_led.default_trigger = devm_kasprintf(&pdev->dev,
GFP_KERNEL, "arc%d-%d-tx",
dev->dev_id, i);
card->tx_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
"pci:green:tx:%d-%d",
dev->dev_id, i);
card->tx_led.dev = &dev->dev;
card->recon_led.brightness_set = led_recon_set;
card->recon_led.default_trigger = devm_kasprintf(&pdev->dev,
GFP_KERNEL, "arc%d-%d-recon",
dev->dev_id, i);
card->recon_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
"pci:red:recon:%d-%d",
dev->dev_id, i);
card->recon_led.dev = &dev->dev;
card->dev = dev;
ret = devm_led_classdev_register(&pdev->dev, &card->tx_led);
if (ret)
goto err_free_arcdev;
ret = devm_led_classdev_register(&pdev->dev, &card->recon_led);
if (ret)
goto err_free_arcdev;
dev_set_drvdata(&dev->dev, card);
ret = com20020_found(dev, IRQF_SHARED);
if (ret)
goto err_free_arcdev;
devm_arcnet_led_init(dev, dev->dev_id, i);
list_add(&card->list, &priv->list_dev);
continue;
err_free_arcdev:
free_arcdev(dev);
break;
}
if (ret)
com20020pci_remove(pdev);
return ret;
}
static void com20020pci_remove(struct pci_dev *pdev)
{
struct com20020_dev *card, *tmpcard;
struct com20020_priv *priv;
priv = pci_get_drvdata(pdev);
list_for_each_entry_safe(card, tmpcard, &priv->list_dev, list) {
struct net_device *dev = card->dev;
unregister_netdev(dev);
free_irq(dev->irq, dev);
free_arcdev(dev);
}
}
static struct com20020_pci_card_info card_info_10mbit = {
.name = "ARC-PCI",
.devcount = 1,
.chan_map_tbl = {
{
.bar = 2,
.offset = 0x00,
.size = 0x08,
},
},
.flags = ARC_CAN_10MBIT,
};
static struct com20020_pci_card_info card_info_5mbit = {
.name = "ARC-PCI",
.devcount = 1,
.chan_map_tbl = {
{
.bar = 2,
.offset = 0x00,
.size = 0x08,
},
},
.flags = ARC_IS_5MBIT,
};
static struct com20020_pci_card_info card_info_sohard = {
.name = "PLX-PCI",
.devcount = 1,
/* SOHARD needs PCI base addr 4 */
.chan_map_tbl = {
{
.bar = 4,
.offset = 0x00,
.size = 0x08
},
},
.flags = ARC_CAN_10MBIT,
};
static struct com20020_pci_card_info card_info_eae_arc1 = {
.name = "EAE PLX-PCI ARC1",
.devcount = 1,
.chan_map_tbl = {
{
.bar = 2,
.offset = 0x00,
.size = 0x08,
},
},
.misc_map = {
.bar = 2,
.offset = 0x10,
.size = 0x04,
},
.leds = {
{
.green = 0x0,
.red = 0x1,
},
},
.rotary = 0x0,
.flags = ARC_CAN_10MBIT,
};
static struct com20020_pci_card_info card_info_eae_ma1 = {
.name = "EAE PLX-PCI MA1",
.devcount = 2,
.chan_map_tbl = {
{
.bar = 2,
.offset = 0x00,
.size = 0x08,
}, {
.bar = 2,
.offset = 0x08,
.size = 0x08,
}
},
.misc_map = {
.bar = 2,
.offset = 0x10,
.size = 0x04,
},
.leds = {
{
.green = 0x0,
.red = 0x1,
}, {
.green = 0x2,
.red = 0x3,
},
},
.rotary = 0x0,
.flags = ARC_CAN_10MBIT,
};
static struct com20020_pci_card_info card_info_eae_fb2 = {
.name = "EAE PLX-PCI FB2",
.devcount = 1,
.chan_map_tbl = {
{
.bar = 2,
.offset = 0x00,
.size = 0x08,
},
},
.misc_map = {
.bar = 2,
.offset = 0x10,
.size = 0x04,
},
.leds = {
{
.green = 0x0,
.red = 0x1,
},
},
.rotary = 0x0,
.flags = ARC_CAN_10MBIT,
};
static const struct pci_device_id com20020pci_id_table[] = {
{
0x1571, 0xa001,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
0,
},
{
0x1571, 0xa002,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
0,
},
{
0x1571, 0xa003,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
0
},
{
0x1571, 0xa004,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
0,
},
{
0x1571, 0xa005,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
0
},
{
0x1571, 0xa006,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
0
},
{
0x1571, 0xa007,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
0
},
{
0x1571, 0xa008,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
0
},
{
0x1571, 0xa009,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
(kernel_ulong_t)&card_info_5mbit
},
{
0x1571, 0xa00a,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
(kernel_ulong_t)&card_info_5mbit
},
{
0x1571, 0xa00b,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
(kernel_ulong_t)&card_info_5mbit
},
{
0x1571, 0xa00c,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
(kernel_ulong_t)&card_info_5mbit
},
{
0x1571, 0xa00d,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
(kernel_ulong_t)&card_info_5mbit
},
{
0x1571, 0xa00e,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
(kernel_ulong_t)&card_info_5mbit
},
{
0x1571, 0xa201,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
(kernel_ulong_t)&card_info_10mbit
},
{
0x1571, 0xa202,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
(kernel_ulong_t)&card_info_10mbit
},
{
0x1571, 0xa203,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
(kernel_ulong_t)&card_info_10mbit
},
{
0x1571, 0xa204,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
(kernel_ulong_t)&card_info_10mbit
},
{
0x1571, 0xa205,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
(kernel_ulong_t)&card_info_10mbit
},
{
0x1571, 0xa206,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
(kernel_ulong_t)&card_info_10mbit
},
{
0x10B5, 0x9030,
0x10B5, 0x2978,
0, 0,
(kernel_ulong_t)&card_info_sohard
},
{
0x10B5, 0x9050,
0x10B5, 0x2273,
0, 0,
(kernel_ulong_t)&card_info_sohard
},
{
0x10B5, 0x9050,
0x10B5, 0x3263,
0, 0,
(kernel_ulong_t)&card_info_eae_arc1
},
{
0x10B5, 0x9050,
0x10B5, 0x3292,
0, 0,
(kernel_ulong_t)&card_info_eae_ma1
},
{
0x10B5, 0x9050,
0x10B5, 0x3294,
0, 0,
(kernel_ulong_t)&card_info_eae_fb2
},
{
0x14BA, 0x6000,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
(kernel_ulong_t)&card_info_10mbit
},
{
0x10B5, 0x2200,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
(kernel_ulong_t)&card_info_10mbit
},
{ 0, }
};
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,
};
static int __init com20020pci_init(void)
{
if (BUGLVL(D_NORMAL))
pr_info("%s\n", "COM20020 PCI support");
return pci_register_driver(&com20020pci_driver);
}
static void __exit com20020pci_cleanup(void)
{
pci_unregister_driver(&com20020pci_driver);
}
module_init(com20020pci_init)
module_exit(com20020pci_cleanup)
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