1 /* 2 * Copyright (c) 2014 Qualcomm Atheros, Inc. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #include <linux/etherdevice.h> 18 #include <linux/pci.h> 19 #include <linux/rtnetlink.h> 20 #include <net/cfg80211.h> 21 22 #include "wil6210.h" 23 24 static int wil_ethtoolops_begin(struct net_device *ndev) 25 { 26 struct wil6210_priv *wil = ndev_to_wil(ndev); 27 28 mutex_lock(&wil->mutex); 29 30 wil_dbg_misc(wil, "%s()\n", __func__); 31 32 return 0; 33 } 34 35 static void wil_ethtoolops_complete(struct net_device *ndev) 36 { 37 struct wil6210_priv *wil = ndev_to_wil(ndev); 38 39 wil_dbg_misc(wil, "%s()\n", __func__); 40 41 mutex_unlock(&wil->mutex); 42 } 43 44 static int wil_ethtoolops_get_coalesce(struct net_device *ndev, 45 struct ethtool_coalesce *cp) 46 { 47 struct wil6210_priv *wil = ndev_to_wil(ndev); 48 u32 itr_en, itr_val = 0; 49 50 wil_dbg_misc(wil, "%s()\n", __func__); 51 52 itr_en = ioread32(wil->csr + HOSTADDR(RGF_DMA_ITR_CNT_CRL)); 53 if (itr_en & BIT_DMA_ITR_CNT_CRL_EN) 54 itr_val = ioread32(wil->csr + HOSTADDR(RGF_DMA_ITR_CNT_TRSH)); 55 56 cp->rx_coalesce_usecs = itr_val; 57 58 return 0; 59 } 60 61 static int wil_ethtoolops_set_coalesce(struct net_device *ndev, 62 struct ethtool_coalesce *cp) 63 { 64 struct wil6210_priv *wil = ndev_to_wil(ndev); 65 66 wil_dbg_misc(wil, "%s(%d usec)\n", __func__, cp->rx_coalesce_usecs); 67 68 if (wil->wdev->iftype == NL80211_IFTYPE_MONITOR) { 69 wil_dbg_misc(wil, "No IRQ coalescing in monitor mode\n"); 70 return -EINVAL; 71 } 72 73 /* only @rx_coalesce_usecs supported, ignore 74 * other parameters 75 */ 76 77 if (cp->rx_coalesce_usecs > WIL6210_ITR_TRSH_MAX) 78 goto out_bad; 79 80 wil->itr_trsh = cp->rx_coalesce_usecs; 81 wil_set_itr_trsh(wil); 82 83 return 0; 84 85 out_bad: 86 wil_dbg_misc(wil, "Unsupported coalescing params. Raw command:\n"); 87 print_hex_dump_debug("DBG[MISC] coal ", DUMP_PREFIX_OFFSET, 16, 4, 88 cp, sizeof(*cp), false); 89 return -EINVAL; 90 } 91 92 static const struct ethtool_ops wil_ethtool_ops = { 93 .begin = wil_ethtoolops_begin, 94 .complete = wil_ethtoolops_complete, 95 .get_drvinfo = cfg80211_get_drvinfo, 96 .get_coalesce = wil_ethtoolops_get_coalesce, 97 .set_coalesce = wil_ethtoolops_set_coalesce, 98 }; 99 100 void wil_set_ethtoolops(struct net_device *ndev) 101 { 102 ndev->ethtool_ops = &wil_ethtool_ops; 103 } 104