From b6b1b0ec05889951747b6f22dcb0220f3cc2e9e0 Mon Sep 17 00:00:00 2001 From: Vladimir Kondratiev Date: Mon, 22 Sep 2014 15:31:41 +0300 Subject: [PATCH] wil6210: ethtool ops Provide ethtool support; with support for interrupt coalescing through get_coalesce/set_coalesce. Placeholders for begin/complete will be used by runtime PM to make sure target is powered up while performing ethtool operations Signed-off-by: Vladimir Kondratiev Signed-off-by: John W. Linville --- drivers/net/wireless/ath/wil6210/Makefile | 1 + drivers/net/wireless/ath/wil6210/ethtool.c | 103 +++++++++++++++++++ drivers/net/wireless/ath/wil6210/interrupt.c | 12 +-- drivers/net/wireless/ath/wil6210/main.c | 26 +++++ drivers/net/wireless/ath/wil6210/netdev.c | 1 + drivers/net/wireless/ath/wil6210/wil6210.h | 7 +- 6 files changed, 138 insertions(+), 12 deletions(-) create mode 100644 drivers/net/wireless/ath/wil6210/ethtool.c diff --git a/drivers/net/wireless/ath/wil6210/Makefile b/drivers/net/wireless/ath/wil6210/Makefile index a471d74ae409..05f29a6b1ba8 100644 --- a/drivers/net/wireless/ath/wil6210/Makefile +++ b/drivers/net/wireless/ath/wil6210/Makefile @@ -14,6 +14,7 @@ wil6210-y += fw.o wil6210-$(CONFIG_WIL6210_TRACING) += trace.o wil6210-y += wil_platform.o wil6210-$(CONFIG_WIL6210_PLATFORM_MSM) += wil_platform_msm.o +wil6210-y += ethtool.o # for tracing framework to find trace.h CFLAGS_trace.o := -I$(src) diff --git a/drivers/net/wireless/ath/wil6210/ethtool.c b/drivers/net/wireless/ath/wil6210/ethtool.c new file mode 100644 index 000000000000..d686638972be --- /dev/null +++ b/drivers/net/wireless/ath/wil6210/ethtool.c @@ -0,0 +1,103 @@ +/* + * Copyright (c) 2014 Qualcomm Atheros, Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include +#include +#include +#include + +#include "wil6210.h" + +static int wil_ethtoolops_begin(struct net_device *ndev) +{ + struct wil6210_priv *wil = ndev_to_wil(ndev); + + mutex_lock(&wil->mutex); + + wil_dbg_misc(wil, "%s()\n", __func__); + + return 0; +} + +static void wil_ethtoolops_complete(struct net_device *ndev) +{ + struct wil6210_priv *wil = ndev_to_wil(ndev); + + wil_dbg_misc(wil, "%s()\n", __func__); + + mutex_unlock(&wil->mutex); +} + +static int wil_ethtoolops_get_coalesce(struct net_device *ndev, + struct ethtool_coalesce *cp) +{ + struct wil6210_priv *wil = ndev_to_wil(ndev); + u32 itr_en, itr_val = 0; + + wil_dbg_misc(wil, "%s()\n", __func__); + + itr_en = ioread32(wil->csr + HOSTADDR(RGF_DMA_ITR_CNT_CRL)); + if (itr_en & BIT_DMA_ITR_CNT_CRL_EN) + itr_val = ioread32(wil->csr + HOSTADDR(RGF_DMA_ITR_CNT_TRSH)); + + cp->rx_coalesce_usecs = itr_val; + + return 0; +} + +static int wil_ethtoolops_set_coalesce(struct net_device *ndev, + struct ethtool_coalesce *cp) +{ + struct wil6210_priv *wil = ndev_to_wil(ndev); + + wil_dbg_misc(wil, "%s(%d usec)\n", __func__, cp->rx_coalesce_usecs); + + if (wil->wdev->iftype == NL80211_IFTYPE_MONITOR) { + wil_dbg_misc(wil, "No IRQ coalescing in monitor mode\n"); + return -EINVAL; + } + + /* only @rx_coalesce_usecs supported, ignore + * other parameters + */ + + if (cp->rx_coalesce_usecs > WIL6210_ITR_TRSH_MAX) + goto out_bad; + + wil->itr_trsh = cp->rx_coalesce_usecs; + wil_set_itr_trsh(wil); + + return 0; + +out_bad: + wil_dbg_misc(wil, "Unsupported coalescing params. Raw command:\n"); + print_hex_dump_debug("DBG[MISC] coal ", DUMP_PREFIX_OFFSET, 16, 4, + cp, sizeof(*cp), false); + return -EINVAL; +} + +static const struct ethtool_ops wil_ethtool_ops = { + .begin = wil_ethtoolops_begin, + .complete = wil_ethtoolops_complete, + .get_drvinfo = cfg80211_get_drvinfo, + .get_coalesce = wil_ethtoolops_get_coalesce, + .set_coalesce = wil_ethtoolops_set_coalesce, +}; + +void wil_set_ethtoolops(struct net_device *ndev) +{ + ndev->ethtool_ops = &wil_ethtool_ops; +} diff --git a/drivers/net/wireless/ath/wil6210/interrupt.c b/drivers/net/wireless/ath/wil6210/interrupt.c index 7269bac111b9..90f416f239bd 100644 --- a/drivers/net/wireless/ath/wil6210/interrupt.c +++ b/drivers/net/wireless/ath/wil6210/interrupt.c @@ -157,17 +157,7 @@ void wil_unmask_irq(struct wil6210_priv *wil) offsetof(struct RGF_ICR, ICC)); /* interrupt moderation parameters */ - if (wil->wdev->iftype == NL80211_IFTYPE_MONITOR) { - /* disable interrupt moderation for monitor - * to get better timestamp precision - */ - iowrite32(0, wil->csr + HOSTADDR(RGF_DMA_ITR_CNT_CRL)); - } else { - iowrite32(WIL6210_ITR_TRSH, - wil->csr + HOSTADDR(RGF_DMA_ITR_CNT_TRSH)); - iowrite32(BIT_DMA_ITR_CNT_CRL_EN, - wil->csr + HOSTADDR(RGF_DMA_ITR_CNT_CRL)); - } + wil_set_itr_trsh(wil); wil6210_unmask_irq_pseudo(wil); wil6210_unmask_irq_tx(wil); diff --git a/drivers/net/wireless/ath/wil6210/main.c b/drivers/net/wireless/ath/wil6210/main.c index 21667e0c3d14..0424763fd5a1 100644 --- a/drivers/net/wireless/ath/wil6210/main.c +++ b/drivers/net/wireless/ath/wil6210/main.c @@ -33,6 +33,11 @@ static bool no_fw_load = true; module_param(no_fw_load, bool, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(no_fw_load, " do not download FW, use one in on-card flash."); +static unsigned int itr_trsh = WIL6210_ITR_TRSH_DEFAULT; + +module_param(itr_trsh, uint, S_IRUGO); +MODULE_PARM_DESC(itr_trsh, " Interrupt moderation threshold, usecs."); + #define RST_DELAY (20) /* msec, for loop in @wil_target_reset */ #define RST_COUNT (1 + 1000/RST_DELAY) /* round up to be above 1 sec total */ @@ -309,6 +314,7 @@ int wil_priv_init(struct wil6210_priv *wil) } wil->last_fw_recovery = jiffies; + wil->itr_trsh = itr_trsh; return 0; } @@ -437,6 +443,26 @@ static int wil_target_reset(struct wil6210_priv *wil) return 0; } +/** + * wil_set_itr_trsh: - apply interrupt coalescing params + */ +void wil_set_itr_trsh(struct wil6210_priv *wil) +{ + /* disable, use usec resolution */ + W(RGF_DMA_ITR_CNT_CRL, BIT_DMA_ITR_CNT_CRL_EXT_TICK); + + /* disable interrupt moderation for monitor + * to get better timestamp precision + */ + if (wil->wdev->iftype == NL80211_IFTYPE_MONITOR) + return; + + wil_info(wil, "set ITR_TRSH = %d usec\n", wil->itr_trsh); + W(RGF_DMA_ITR_CNT_TRSH, wil->itr_trsh); + W(RGF_DMA_ITR_CNT_CRL, BIT_DMA_ITR_CNT_CRL_EN | + BIT_DMA_ITR_CNT_CRL_EXT_TICK); /* start it */ +} + #undef R #undef W #undef S diff --git a/drivers/net/wireless/ath/wil6210/netdev.c b/drivers/net/wireless/ath/wil6210/netdev.c index 1c0c77d9a14f..c3f0ddfaa5da 100644 --- a/drivers/net/wireless/ath/wil6210/netdev.c +++ b/drivers/net/wireless/ath/wil6210/netdev.c @@ -149,6 +149,7 @@ void *wil_if_alloc(struct device *dev, void __iomem *csr) } ndev->netdev_ops = &wil_netdev_ops; + wil_set_ethtoolops(ndev); ndev->ieee80211_ptr = wdev; ndev->hw_features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GRO; diff --git a/drivers/net/wireless/ath/wil6210/wil6210.h b/drivers/net/wireless/ath/wil6210/wil6210.h index 133eeb84ffad..00c4f0a71fb8 100644 --- a/drivers/net/wireless/ath/wil6210/wil6210.h +++ b/drivers/net/wireless/ath/wil6210/wil6210.h @@ -52,7 +52,9 @@ static inline u32 WIL_GET_BITS(u32 x, int b0, int b1) #define WIL6210_MAX_TX_RINGS (24) /* HW limit */ #define WIL6210_MAX_CID (8) /* HW limit */ #define WIL6210_NAPI_BUDGET (16) /* arbitrary */ -#define WIL6210_ITR_TRSH (10000) /* arbitrary - about 15 IRQs/msec */ +/* Max supported by wil6210 value for interrupt threshold is 5sec. */ +#define WIL6210_ITR_TRSH_MAX (5000000) +#define WIL6210_ITR_TRSH_DEFAULT (300) /* usec */ #define WIL6210_FW_RECOVERY_RETRIES (5) /* try to recover this many times */ #define WIL6210_FW_RECOVERY_TO msecs_to_jiffies(5000) #define WIL6210_SCAN_TO msecs_to_jiffies(10000) @@ -393,6 +395,7 @@ struct wil6210_priv { u32 monitor_flags; u32 secure_pcp; /* create secure PCP? */ int sinfo_gen; + u32 itr_trsh; /* cached ISR registers */ u32 isr_misc; /* mailbox related */ @@ -502,6 +505,7 @@ void wil_if_remove(struct wil6210_priv *wil); int wil_priv_init(struct wil6210_priv *wil); void wil_priv_deinit(struct wil6210_priv *wil); int wil_reset(struct wil6210_priv *wil); +void wil_set_itr_trsh(struct wil6210_priv *wil); void wil_fw_error_recovery(struct wil6210_priv *wil); void wil_link_on(struct wil6210_priv *wil); void wil_link_off(struct wil6210_priv *wil); @@ -511,6 +515,7 @@ int wil_down(struct wil6210_priv *wil); int __wil_down(struct wil6210_priv *wil); void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r); int wil_find_cid(struct wil6210_priv *wil, const u8 *mac); +void wil_set_ethtoolops(struct net_device *ndev); void __iomem *wmi_buffer(struct wil6210_priv *wil, __le32 ptr); void __iomem *wmi_addr(struct wil6210_priv *wil, u32 ptr);