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 tx_itr_en, tx_itr_val = 0; 49 u32 rx_itr_en, rx_itr_val = 0; 50 51 wil_dbg_misc(wil, "%s()\n", __func__); 52 53 if (test_bit(hw_capability_advanced_itr_moderation, 54 wil->hw_capabilities)) { 55 tx_itr_en = ioread32(wil->csr + 56 HOSTADDR(RGF_DMA_ITR_TX_CNT_CTL)); 57 if (tx_itr_en & BIT_DMA_ITR_TX_CNT_CTL_EN) 58 tx_itr_val = 59 ioread32(wil->csr + 60 HOSTADDR(RGF_DMA_ITR_TX_CNT_TRSH)); 61 62 rx_itr_en = ioread32(wil->csr + 63 HOSTADDR(RGF_DMA_ITR_RX_CNT_CTL)); 64 if (rx_itr_en & BIT_DMA_ITR_RX_CNT_CTL_EN) 65 rx_itr_val = 66 ioread32(wil->csr + 67 HOSTADDR(RGF_DMA_ITR_RX_CNT_TRSH)); 68 } else { 69 rx_itr_en = ioread32(wil->csr + HOSTADDR(RGF_DMA_ITR_CNT_CRL)); 70 if (rx_itr_en & BIT_DMA_ITR_CNT_CRL_EN) 71 rx_itr_val = ioread32(wil->csr + 72 HOSTADDR(RGF_DMA_ITR_CNT_TRSH)); 73 } 74 75 cp->tx_coalesce_usecs = tx_itr_val; 76 cp->rx_coalesce_usecs = rx_itr_val; 77 return 0; 78 } 79 80 static int wil_ethtoolops_set_coalesce(struct net_device *ndev, 81 struct ethtool_coalesce *cp) 82 { 83 struct wil6210_priv *wil = ndev_to_wil(ndev); 84 85 wil_dbg_misc(wil, "%s(rx %d usec, tx %d usec)\n", __func__, 86 cp->rx_coalesce_usecs, cp->tx_coalesce_usecs); 87 88 if (wil->wdev->iftype == NL80211_IFTYPE_MONITOR) { 89 wil_dbg_misc(wil, "No IRQ coalescing in monitor mode\n"); 90 return -EINVAL; 91 } 92 93 /* only @rx_coalesce_usecs and @tx_coalesce_usecs supported, 94 * ignore other parameters 95 */ 96 97 if (cp->rx_coalesce_usecs > WIL6210_ITR_TRSH_MAX || 98 cp->tx_coalesce_usecs > WIL6210_ITR_TRSH_MAX) 99 goto out_bad; 100 101 wil->tx_max_burst_duration = cp->tx_coalesce_usecs; 102 wil->rx_max_burst_duration = cp->rx_coalesce_usecs; 103 wil_configure_interrupt_moderation(wil); 104 105 return 0; 106 107 out_bad: 108 wil_dbg_misc(wil, "Unsupported coalescing params. Raw command:\n"); 109 print_hex_dump_debug("DBG[MISC] coal ", DUMP_PREFIX_OFFSET, 16, 4, 110 cp, sizeof(*cp), false); 111 return -EINVAL; 112 } 113 114 static const struct ethtool_ops wil_ethtool_ops = { 115 .begin = wil_ethtoolops_begin, 116 .complete = wil_ethtoolops_complete, 117 .get_drvinfo = cfg80211_get_drvinfo, 118 .get_coalesce = wil_ethtoolops_get_coalesce, 119 .set_coalesce = wil_ethtoolops_set_coalesce, 120 }; 121 122 void wil_set_ethtoolops(struct net_device *ndev) 123 { 124 ndev->ethtool_ops = &wil_ethtool_ops; 125 } 126