From patchwork Tue Aug 1 14:34:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Deren Wu X-Patchwork-Id: 13336852 X-Patchwork-Delegate: nbd@nbd.name Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 85C34C04FE0 for ; Tue, 1 Aug 2023 14:36:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234814AbjHAOf7 (ORCPT ); Tue, 1 Aug 2023 10:35:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55364 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234794AbjHAOfz (ORCPT ); Tue, 1 Aug 2023 10:35:55 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 71C751702 for ; Tue, 1 Aug 2023 07:35:53 -0700 (PDT) X-UUID: b35ecb7a307811ee9cb5633481061a41-20230801 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=UxVUmm/hIeZZkEF2wqtjkkHPQm3+pJOxQq99x49XDIg=; b=cW2o6pFyg8HQb43SOJhye7X67cnG165MG6GvCflpVJC05bAjPzTmcrFXzzkpglC20zhq9+rYGpuZyiSSew27LUrF6KgqDmHrcTyvxwtRaRPKKJMj3X1h4RV+6fWd+HljvB9CbFQYW21OVEYkLa1ewcJu9nQUc7jl1wDF09DEKV8=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.30,REQID:adc8dd45-33ed-4ff6-8d2e-b813a30a0f4a,IP:0,U RL:0,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-25 X-CID-META: VersionHash:1fcc6f8,CLOUDID:ee8e91d2-cd77-4e67-bbfd-aa4eaace762f,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO, DKR:0,DKP:0,BRR:0,BRE:0 X-CID-BVR: 0,NGT X-CID-BAS: 0,NGT,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-UUID: b35ecb7a307811ee9cb5633481061a41-20230801 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1263432048; Tue, 01 Aug 2023 22:35:45 +0800 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by mtkmbs11n2.mediatek.inc (172.21.101.187) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Tue, 1 Aug 2023 22:35:44 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Tue, 1 Aug 2023 22:35:44 +0800 From: Deren Wu To: Felix Fietkau , Lorenzo Bianconi CC: Sean Wang , Ryder Lee , Shayne Chen , linux-wireless , linux-mediatek , Deren Wu Subject: [PATCH 14/17] wifi: mt76: mt7925: add usb.c Date: Tue, 1 Aug 2023 22:34:30 +0800 Message-ID: X-Mailer: git-send-email 2.18.0 In-Reply-To: References: MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org (Patches split into one patch per file for easier review, but the final commit will be one big patch. See the cover letter for more info.) Co-developed-by: Lorenzo Bianconi Signed-off-by: Lorenzo Bianconi Signed-off-by: Deren Wu --- .../net/wireless/mediatek/mt76/mt7925/usb.c | 340 ++++++++++++++++++ 1 file changed, 340 insertions(+) create mode 100644 drivers/net/wireless/mediatek/mt76/mt7925/usb.c diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/usb.c b/drivers/net/wireless/mediatek/mt76/mt7925/usb.c new file mode 100644 index 000000000000..6cbcecabf40e --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/mt7925/usb.c @@ -0,0 +1,340 @@ +// SPDX-License-Identifier: ISC +/* Copyright (C) 2023 MediaTek Inc. */ + +#include +#include +#include + +#include "mt7925.h" +#include "mcu.h" +#include "mac.h" + +static const struct usb_device_id mt7925u_device_table[] = { + { USB_DEVICE_AND_INTERFACE_INFO(0x0e8d, 0x7925, 0xff, 0xff, 0xff), + .driver_info = (kernel_ulong_t)MT7925_FIRMWARE_WM }, + { }, +}; + +static int +mt7925u_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb, + int cmd, int *seq) +{ + struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76); + u32 pad, ep; + int ret; + + ret = mt7925_mcu_fill_message(mdev, skb, cmd, seq); + if (ret) + return ret; + + mdev->mcu.timeout = 3 * HZ; + + if (cmd != MCU_CMD(FW_SCATTER)) + ep = MT_EP_OUT_INBAND_CMD; + else + ep = MT_EP_OUT_AC_BE; + + mt7925_skb_add_usb_sdio_hdr(dev, skb, 0); + pad = round_up(skb->len, 4) + 4 - skb->len; + __skb_put_zero(skb, pad); + + ret = mt76u_bulk_msg(&dev->mt76, skb->data, skb->len, NULL, + 1000, ep); + dev_kfree_skb(skb); + + return ret; +} + +static int mt7925u_mcu_init(struct mt792x_dev *dev) +{ + static const struct mt76_mcu_ops mcu_ops = { + .headroom = MT_SDIO_HDR_SIZE + + sizeof(struct mt76_connac2_mcu_txd), + .tailroom = MT_USB_TAIL_SIZE, + .mcu_skb_send_msg = mt7925u_mcu_send_message, + .mcu_parse_response = mt7925_mcu_parse_response, + }; + int ret; + + dev->mt76.mcu_ops = &mcu_ops; + + mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN); + ret = mt7925_run_firmware(dev); + if (ret) + return ret; + + set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state); + mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN); + + return 0; +} + +static void mt7925u_stop(struct ieee80211_hw *hw) +{ + struct mt792x_dev *dev = mt792x_hw_dev(hw); + + mt76u_stop_tx(&dev->mt76); + mt7925_stop(hw); +} + +static int mt7925u_mac_reset(struct mt792x_dev *dev) +{ + int err; + + mt76_txq_schedule_all(&dev->mphy); + mt76_worker_disable(&dev->mt76.tx_worker); + + set_bit(MT76_RESET, &dev->mphy.state); + set_bit(MT76_MCU_RESET, &dev->mphy.state); + + wake_up(&dev->mt76.mcu.wait); + skb_queue_purge(&dev->mt76.mcu.res_q); + + mt76u_stop_rx(&dev->mt76); + mt76u_stop_tx(&dev->mt76); + + mt792xu_wfsys_reset(dev); + + clear_bit(MT76_MCU_RESET, &dev->mphy.state); + err = mt76u_resume_rx(&dev->mt76); + if (err) + goto out; + + err = mt792xu_mcu_power_on(dev); + if (err) + goto out; + + err = mt792xu_dma_init(dev, false); + if (err) + goto out; + + mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE); + mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN); + + err = mt7925_run_firmware(dev); + if (err) + goto out; + + mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN); + + err = mt7925_mcu_set_eeprom(dev); + if (err) + goto out; + + err = mt7925_mac_init(dev); + if (err) + goto out; + + err = __mt7925_start(&dev->phy); +out: + clear_bit(MT76_RESET, &dev->mphy.state); + + mt76_worker_enable(&dev->mt76.tx_worker); + + return err; +} + +static int mt7925u_probe(struct usb_interface *usb_intf, + const struct usb_device_id *id) +{ + static const struct mt76_driver_ops drv_ops = { + .txwi_size = MT_SDIO_TXD_SIZE, + .drv_flags = MT_DRV_RX_DMA_HDR | MT_DRV_HW_MGMT_TXQ | + MT_DRV_AMSDU_OFFLOAD, + .survey_flags = SURVEY_INFO_TIME_TX | + SURVEY_INFO_TIME_RX | + SURVEY_INFO_TIME_BSS_RX, + .tx_prepare_skb = mt7925_usb_sdio_tx_prepare_skb, + .tx_complete_skb = mt7925_usb_sdio_tx_complete_skb, + .tx_status_data = mt7925_usb_sdio_tx_status_data, + .rx_skb = mt7925_queue_rx_skb, + .rx_check = mt7925_rx_check, + .sta_add = mt7925_mac_sta_add, + .sta_assoc = mt7925_mac_sta_assoc, + .sta_remove = mt7925_mac_sta_remove, + .update_survey = mt792x_update_channel, + }; + static const struct mt792x_hif_ops hif_ops = { + .mcu_init = mt7925u_mcu_init, + .init_reset = mt792xu_init_reset, + .reset = mt7925u_mac_reset, + }; + static struct mt76_bus_ops bus_ops = { + .rr = mt792xu_rr, + .wr = mt792xu_wr, + .rmw = mt792xu_rmw, + .read_copy = mt76u_read_copy, + .write_copy = mt792xu_copy, + .type = MT76_BUS_USB, + }; + struct usb_device *udev = interface_to_usbdev(usb_intf); + struct ieee80211_ops *ops; + struct ieee80211_hw *hw; + struct mt792x_dev *dev; + struct mt76_dev *mdev; + u8 features; + int ret; + + ops = mt792x_get_mac80211_ops(&usb_intf->dev, &mt7925_ops, + (void *)id->driver_info, &features); + if (!ops) + return -ENOMEM; + + ops->stop = mt7925u_stop; + + mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), ops, &drv_ops); + if (!mdev) + return -ENOMEM; + + dev = container_of(mdev, struct mt792x_dev, mt76); + dev->fw_features = features; + dev->hif_ops = &hif_ops; + + udev = usb_get_dev(udev); + usb_reset_device(udev); + + usb_set_intfdata(usb_intf, dev); + + ret = __mt76u_init(mdev, usb_intf, &bus_ops); + if (ret < 0) + goto error; + + mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) | + (mt76_rr(dev, MT_HW_REV) & 0xff); + dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev); + + if (mt76_get_field(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_N9_RDY)) { + ret = mt792xu_wfsys_reset(dev); + if (ret) + goto error; + } + + ret = mt792xu_mcu_power_on(dev); + if (ret) + goto error; + + ret = mt76u_alloc_mcu_queue(&dev->mt76); + if (ret) + goto error; + + ret = mt76u_alloc_queues(&dev->mt76); + if (ret) + goto error; + + ret = mt792xu_dma_init(dev, false); + if (ret) + goto error; + + hw = mt76_hw(dev); + /* check hw sg support in order to enable AMSDU */ + hw->max_tx_fragments = mdev->usb.sg_en ? MT_HW_TXP_MAX_BUF_NUM : 1; + + ret = mt7925_register_device(dev); + if (ret) + goto error; + + return 0; + +error: + mt76u_queues_deinit(&dev->mt76); + + usb_set_intfdata(usb_intf, NULL); + usb_put_dev(interface_to_usbdev(usb_intf)); + + mt76_free_device(&dev->mt76); + + return ret; +} + +#ifdef CONFIG_PM +static int mt7925u_suspend(struct usb_interface *intf, pm_message_t state) +{ + struct mt792x_dev *dev = usb_get_intfdata(intf); + struct mt76_connac_pm *pm = &dev->pm; + int err; + + pm->suspended = true; + flush_work(&dev->reset_work); + + err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, true); + if (err) + goto failed; + + mt76u_stop_rx(&dev->mt76); + mt76u_stop_tx(&dev->mt76); + + return 0; + +failed: + pm->suspended = false; + + if (err < 0) + mt792x_reset(&dev->mt76); + + return err; +} + +static int mt7925u_resume(struct usb_interface *intf) +{ + struct mt792x_dev *dev = usb_get_intfdata(intf); + struct mt76_connac_pm *pm = &dev->pm; + bool reinit = true; + int err, i; + + for (i = 0; i < 10; i++) { + u32 val = mt76_rr(dev, MT_WF_SW_DEF_CR_USB_MCU_EVENT); + + if (!(val & MT_WF_SW_SER_TRIGGER_SUSPEND)) { + reinit = false; + break; + } + if (val & MT_WF_SW_SER_DONE_SUSPEND) { + mt76_wr(dev, MT_WF_SW_DEF_CR_USB_MCU_EVENT, 0); + break; + } + + msleep(20); + } + + if (reinit || mt792x_dma_need_reinit(dev)) { + err = mt792xu_dma_init(dev, true); + if (err) + goto failed; + } + + err = mt76u_resume_rx(&dev->mt76); + if (err < 0) + goto failed; + + err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, false); +failed: + pm->suspended = false; + + if (err < 0) + mt792x_reset(&dev->mt76); + + return err; +} +#endif /* CONFIG_PM */ + +MODULE_DEVICE_TABLE(usb, mt7925u_device_table); +MODULE_FIRMWARE(MT7925_FIRMWARE_WM); +MODULE_FIRMWARE(MT7925_ROM_PATCH); + +static struct usb_driver mt7925u_driver = { + .name = KBUILD_MODNAME, + .id_table = mt7925u_device_table, + .probe = mt7925u_probe, + .disconnect = mt792xu_disconnect, +#ifdef CONFIG_PM + .suspend = mt7925u_suspend, + .resume = mt7925u_resume, + .reset_resume = mt7925u_resume, +#endif /* CONFIG_PM */ + .soft_unbind = 1, + .disable_hub_initiated_lpm = 1, +}; +module_usb_driver(mt7925u_driver); + +MODULE_AUTHOR("Lorenzo Bianconi "); +MODULE_LICENSE("Dual BSD/GPL");