| /******************************************************************************* |
| Copyright (C) Marvell International Ltd. and its affiliates |
| |
| This software file (the "File") is owned and distributed by Marvell |
| International Ltd. and/or its affiliates ("Marvell") under the following |
| alternative licensing terms. Once you have made an election to distribute the |
| File under one of the following license alternatives, please (i) delete this |
| introductory statement regarding license alternatives, (ii) delete the two |
| license alternatives that you have not elected to use and (iii) preserve the |
| Marvell copyright notice above. |
| |
| |
| ******************************************************************************** |
| Marvell GPL License Option |
| |
| If you received this File from Marvell, you may opt to use, redistribute and/or |
| modify this File in accordance with the terms and conditions of the General |
| Public License Version 2, June 1991 (the "GPL License"), a copy of which is |
| available along with the File in the license.txt file or by writing to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 or |
| on the worldwide web at http://www.gnu.org/licenses/gpl.txt. |
| |
| THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE IMPLIED |
| WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY |
| DISCLAIMED. The GPL License provides additional details about this warranty |
| disclaimer. |
| *******************************************************************************/ |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/types.h> |
| #include <linux/capability.h> |
| #include <linux/kernel.h> |
| #include <linux/platform_device.h> |
| |
| #include "gbe/mvNeta.h" |
| #include "net_dev/mv_netdev.h" |
| |
| static ssize_t hwf_help(char *buf) |
| { |
| int off = 0; |
| |
| off += mvOsSPrintf(buf+off, "cat help - print this help\n"); |
| #ifndef CONFIG_MV_ETH_BM_CPU |
| off += mvOsSPrintf(buf+off, "cat bm - print HWF BM information\n"); |
| #endif |
| off += mvOsSPrintf(buf+off, "echo rxp p txp > regs - print HWF registers of port <p>\n"); |
| off += mvOsSPrintf(buf+off, "echo rxp p txp > cntrs - print HWF counters of port <p>\n"); |
| off += mvOsSPrintf(buf+off, "echo rxp p txp txq en > en - enable HWF from <rxp> to specific <txq>\n"); |
| off += mvOsSPrintf(buf+off, "echo rxp p txp txq a b > drop - set HWF drop threshold <a> and Random bits <b>\n"); |
| |
| return off; |
| } |
| |
| static ssize_t hwf_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| const char *name = attr->attr.name; |
| |
| if (!capable(CAP_NET_ADMIN)) |
| return -EPERM; |
| |
| if (!strcmp(name, "help")) |
| return hwf_help(buf); |
| #ifndef CONFIG_MV_ETH_BM_CPU |
| else if (!strcmp(name, "bm")) |
| mv_hwf_bm_dump(); |
| #endif /* CONFIG_MV_ETH_BM_CPU */ |
| |
| return 0; |
| } |
| static ssize_t hwf_store(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t len) |
| { |
| const char *name = attr->attr.name; |
| unsigned int err = 0, rxp = 0, p = 0, txp = 0, txq = 0, a = 0, b = 0; |
| unsigned long flags; |
| |
| if (!capable(CAP_NET_ADMIN)) |
| return -EPERM; |
| |
| sscanf(buf, "%d %d %d %d %d %d", &rxp, &p, &txp, &txq, &a, &b); |
| |
| local_irq_save(flags); |
| |
| if (!strcmp(name, "regs")) { |
| mvNetaHwfRxpRegs(rxp); |
| mvNetaHwfTxpRegs(rxp, p, txp); |
| } else if (!strcmp(name, "cntrs")) { |
| mvNetaHwfTxpCntrs(rxp, p, txp); |
| } else if (!strcmp(name, "en")) { |
| if (a) { |
| /* Set txp/txq ownership to HWF */ |
| if (mv_eth_ctrl_txq_hwf_own(p, txp, txq, rxp)) { |
| printk(KERN_ERR "%s failed: p=%d, txp=%d, txq=%d\n", |
| __func__, p, txp, txq); |
| return -EINVAL; |
| } |
| } else |
| mv_eth_ctrl_txq_hwf_own(p, txp, txq, -1); |
| |
| mvNetaHwfTxqEnable(rxp, p, txp, txq, a); |
| } else if (!strcmp(name, "drop")) { |
| mvNetaHwfTxqDropSet(rxp, p, txp, txq, a, b); |
| } else |
| printk(KERN_ERR "%s: illegal operation <%s>\n", __func__, attr->attr.name); |
| |
| local_irq_restore(flags); |
| |
| if (err) |
| printk(KERN_ERR "%s: <%s>, error %d\n", __func__, attr->attr.name, err); |
| |
| return err ? -EINVAL : len; |
| } |
| |
| static DEVICE_ATTR(regs, S_IWUSR, hwf_show, hwf_store); |
| static DEVICE_ATTR(cntrs, S_IWUSR, hwf_show, hwf_store); |
| static DEVICE_ATTR(en, S_IWUSR, hwf_show, hwf_store); |
| static DEVICE_ATTR(drop, S_IWUSR, hwf_show, hwf_store); |
| static DEVICE_ATTR(bm, S_IRUSR, hwf_show, hwf_store); |
| static DEVICE_ATTR(help, S_IRUSR, hwf_show, hwf_store); |
| |
| static struct attribute *hwf_attrs[] = { |
| &dev_attr_regs.attr, |
| &dev_attr_cntrs.attr, |
| &dev_attr_en.attr, |
| &dev_attr_drop.attr, |
| &dev_attr_bm.attr, |
| &dev_attr_help.attr, |
| NULL |
| }; |
| |
| static struct attribute_group hwf_group = { |
| .name = "hwf", |
| .attrs = hwf_attrs, |
| }; |
| |
| int __devinit hwf_sysfs_init(void) |
| { |
| int err; |
| struct device *pd; |
| |
| pd = bus_find_device_by_name(&platform_bus_type, NULL, "neta"); |
| if (!pd) { |
| platform_device_register_simple("neta", -1, NULL, 0); |
| pd = bus_find_device_by_name(&platform_bus_type, NULL, "neta"); |
| } |
| |
| if (!pd) { |
| printk(KERN_ERR "%s: cannot find neta device\n", __func__); |
| pd = &platform_bus; |
| } |
| |
| err = sysfs_create_group(&pd->kobj, &hwf_group); |
| if (err) { |
| printk(KERN_INFO "sysfs group failed %d\n", err); |
| goto out; |
| } |
| out: |
| return err; |
| } |
| |
| module_init(hwf_sysfs_init); |
| |
| MODULE_AUTHOR("Dmitri Epshtein"); |
| MODULE_DESCRIPTION("HWF for Marvell NetA MV65xxx"); |
| MODULE_LICENSE("GPL"); |
| |