From patchwork Thu Aug 13 09:04:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Kalle Valo X-Patchwork-Id: 11712281 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D20EE618 for ; Thu, 13 Aug 2020 09:04:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B0C6D2080C for ; Thu, 13 Aug 2020 09:04:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="KKocF9fX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726531AbgHMJEt (ORCPT ); Thu, 13 Aug 2020 05:04:49 -0400 Received: from mail29.static.mailgun.info ([104.130.122.29]:63560 "EHLO mail29.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726192AbgHMJEs (ORCPT ); Thu, 13 Aug 2020 05:04:48 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1597309487; h=Content-Transfer-Encoding: Content-Type: MIME-Version: References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=8l7PihmuVAVu4HbcjvJ6CHvXutImpyQOzvP44dG8CPg=; b=KKocF9fXcd8fnuV73PEpsssWc7cjh6L3jJq8e9XHDD3j0IGC+tJqVFhIeC3zMiilnYHX4Zwt nMAwlyXswUnfTxvVGkWJVUMQRYplEVcY2lFQu8zaZDdaLVpxDeGJz83XaxCyvdIblrVNt3tY zi7DCgL0IdMtSamyNgXyNiQW2t4= X-Mailgun-Sending-Ip: 104.130.122.29 X-Mailgun-Sid: WyI3YTAwOSIsICJsaW51eC13aXJlbGVzc0B2Z2VyLmtlcm5lbC5vcmciLCAiYmU5ZTRhIl0= Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n05.prod.us-east-1.postgun.com with SMTP id 5f35022c2b87d66049dae060 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 13 Aug 2020 09:04:44 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 9561AC433C6; Thu, 13 Aug 2020 09:04:43 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=ham autolearn_force=no version=3.4.0 Received: from potku.adurom.net (88-114-240-156.elisa-laajakaista.fi [88.114.240.156]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: kvalo) by smtp.codeaurora.org (Postfix) with ESMTPSA id 01897C4339C; Thu, 13 Aug 2020 09:04:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 01897C4339C Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=kvalo@codeaurora.org From: Kalle Valo To: ath11k@lists.infradead.org Cc: linux-wireless@vger.kernel.org Subject: [PATCH 08/10] ath11k: register MHI controller device for QCA6390 Date: Thu, 13 Aug 2020 12:04:24 +0300 Message-Id: <1597309466-19688-9-git-send-email-kvalo@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1597309466-19688-1-git-send-email-kvalo@codeaurora.org> References: <1597309466-19688-1-git-send-email-kvalo@codeaurora.org> MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Govind Singh Modem Host Interface (MHI) is a communication protocol to communicate with external Qualcomm modems and Wi-Fi chipsets over high speed peripheral buses. Even though MHI doesn’t dictate underlying physical layer, protocol and MHI stack is structured for PCI based devices. Register directly with MHI subsystem as a MHI device driver for firmware download to QCA6390. Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1 Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.1.0.1-01238-QCAHKSWPL_SILICONZ-2 Signed-off-by: Govind Singh Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath11k/Kconfig | 3 + drivers/net/wireless/ath/ath11k/Makefile | 2 +- drivers/net/wireless/ath/ath11k/hw.h | 1 + drivers/net/wireless/ath/ath11k/mhi.c | 423 +++++++++++++++++++++++++++++++ drivers/net/wireless/ath/ath11k/mhi.h | 28 ++ drivers/net/wireless/ath/ath11k/pci.c | 77 ++++++ drivers/net/wireless/ath/ath11k/pci.h | 14 + 7 files changed, 547 insertions(+), 1 deletion(-) create mode 100644 drivers/net/wireless/ath/ath11k/mhi.c create mode 100644 drivers/net/wireless/ath/ath11k/mhi.h diff --git a/drivers/net/wireless/ath/ath11k/Kconfig b/drivers/net/wireless/ath/ath11k/Kconfig index 2a792ddd6fea..7e5094e0e7bb 100644 --- a/drivers/net/wireless/ath/ath11k/Kconfig +++ b/drivers/net/wireless/ath/ath11k/Kconfig @@ -21,6 +21,9 @@ config ATH11K_AHB config ATH11K_PCI tristate "Atheros ath11k PCI support" depends on ATH11K && PCI + select MHI_BUS + select QRTR + select QRTR_MHI help This module adds support for PCIE bus diff --git a/drivers/net/wireless/ath/ath11k/Makefile b/drivers/net/wireless/ath/ath11k/Makefile index 4d1807f52d92..bc4911f0339d 100644 --- a/drivers/net/wireless/ath/ath11k/Makefile +++ b/drivers/net/wireless/ath/ath11k/Makefile @@ -28,7 +28,7 @@ obj-$(CONFIG_ATH11K_AHB) += ath11k_ahb.o ath11k_ahb-y += ahb.o obj-$(CONFIG_ATH11K_PCI) += ath11k_pci.o -ath11k_pci-y += pci.o +ath11k_pci-y += mhi.o pci.o # for tracing framework to find trace.h CFLAGS_trace.o := -I$(src) diff --git a/drivers/net/wireless/ath/ath11k/hw.h b/drivers/net/wireless/ath/ath11k/hw.h index a8cdf4d08be4..c02fd02839d4 100644 --- a/drivers/net/wireless/ath/ath11k/hw.h +++ b/drivers/net/wireless/ath/ath11k/hw.h @@ -72,6 +72,7 @@ #define ATH11K_BOARD_API2_FILE "board-2.bin" #define ATH11K_DEFAULT_BOARD_FILE "board.bin" #define ATH11K_DEFAULT_CAL_FILE "caldata.bin" +#define ATH11K_AMSS_FILE "amss.bin" enum ath11k_hw_rate_cck { ATH11K_HW_RATE_CCK_LP_11M = 0, diff --git a/drivers/net/wireless/ath/ath11k/mhi.c b/drivers/net/wireless/ath/ath11k/mhi.c new file mode 100644 index 000000000000..62d39ef6741f --- /dev/null +++ b/drivers/net/wireless/ath/ath11k/mhi.c @@ -0,0 +1,423 @@ +// SPDX-License-Identifier: BSD-3-Clause-Clear +/* Copyright (c) 2020 The Linux Foundation. All rights reserved. */ + +#include +#include + +#include "core.h" +#include "debug.h" +#include "mhi.h" + +#define MHI_TIMEOUT_DEFAULT_MS 90000 + +static struct mhi_channel_config ath11k_mhi_channels[] = { + { + .num = 0, + .name = "LOOPBACK", + .num_elements = 32, + .event_ring = 0, + .dir = DMA_TO_DEVICE, + .ee_mask = 0x4, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .auto_start = false, + }, + { + .num = 1, + .name = "LOOPBACK", + .num_elements = 32, + .event_ring = 0, + .dir = DMA_FROM_DEVICE, + .ee_mask = 0x4, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .auto_start = false, + }, + { + .num = 20, + .name = "IPCR", + .num_elements = 64, + .event_ring = 1, + .dir = DMA_TO_DEVICE, + .ee_mask = 0x4, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = false, + .auto_start = true, + }, + { + .num = 21, + .name = "IPCR", + .num_elements = 64, + .event_ring = 1, + .dir = DMA_FROM_DEVICE, + .ee_mask = 0x4, + .pollcfg = 0, + .doorbell = MHI_DB_BRST_DISABLE, + .lpm_notify = false, + .offload_channel = false, + .doorbell_mode_switch = false, + .auto_queue = true, + .auto_start = true, + }, +}; + +static struct mhi_event_config ath11k_mhi_events[] = { + { + .num_elements = 32, + .irq_moderation_ms = 0, + .irq = 1, + .mode = MHI_DB_BRST_DISABLE, + .data_type = MHI_ER_CTRL, + .hardware_event = false, + .client_managed = false, + .offload_channel = false, + }, + { + .num_elements = 256, + .irq_moderation_ms = 1, + .irq = 2, + .mode = MHI_DB_BRST_DISABLE, + .priority = 1, + .hardware_event = false, + .client_managed = false, + .offload_channel = false, + }, +}; + +static struct mhi_controller_config ath11k_mhi_config = { + .max_channels = 128, + .timeout_ms = 2000, + .use_bounce_buf = false, + .buf_len = 0, + .num_channels = ARRAY_SIZE(ath11k_mhi_channels), + .ch_cfg = ath11k_mhi_channels, + .num_events = ARRAY_SIZE(ath11k_mhi_events), + .event_cfg = ath11k_mhi_events, +}; + +static int ath11k_mhi_get_msi(struct ath11k_pci *ab_pci) +{ + struct ath11k_base *ab = ab_pci->ab; + u32 user_base_data, base_vector; + int ret, num_vectors, i; + int *irq; + + ret = ath11k_pci_get_user_msi_assignment(ab_pci, + "MHI", &num_vectors, + &user_base_data, &base_vector); + if (ret) + return ret; + + ath11k_dbg(ab, ATH11K_DBG_PCI, "Number of assigned MSI for MHI is %d, base vector is %d\n", + num_vectors, base_vector); + + irq = kcalloc(num_vectors, sizeof(int), GFP_KERNEL); + if (!irq) + return -ENOMEM; + + for (i = 0; i < num_vectors; i++) + irq[i] = ath11k_pci_get_msi_irq(ab->dev, + base_vector + i); + + ab_pci->mhi_ctrl->irq = irq; + ab_pci->mhi_ctrl->nr_irqs = num_vectors; + + return 0; +} + +static int ath11k_mhi_op_runtime_get(struct mhi_controller *mhi_cntrl) +{ + return 0; +} + +static void ath11k_mhi_op_runtime_put(struct mhi_controller *mhi_cntrl) +{ +} + +static void ath11k_mhi_op_status_cb(struct mhi_controller *mhi_cntrl, + enum mhi_callback cb) +{ +} + +static int ath11k_mhi_op_read_reg(struct mhi_controller *mhi_cntrl, + void __iomem *addr, + u32 *out) +{ + *out = readl(addr); + + return 0; +} + +static void ath11k_mhi_op_write_reg(struct mhi_controller *mhi_cntrl, + void __iomem *addr, + u32 val) +{ + writel(val, addr); +} + +int ath11k_mhi_register(struct ath11k_pci *ab_pci) +{ + struct ath11k_base *ab = ab_pci->ab; + struct mhi_controller *mhi_ctrl; + int ret; + + mhi_ctrl = kzalloc(sizeof(*mhi_ctrl), GFP_KERNEL); + if (!mhi_ctrl) + return PTR_ERR(mhi_ctrl); + + ath11k_core_create_firmware_path(ab, ATH11K_AMSS_FILE, + ab_pci->amss_path, + sizeof(ab_pci->amss_path)); + + ab_pci->mhi_ctrl = mhi_ctrl; + mhi_ctrl->cntrl_dev = ab->dev; + mhi_ctrl->fw_image = ab_pci->amss_path; + mhi_ctrl->regs = ab->mem; + + ret = ath11k_mhi_get_msi(ab_pci); + if (ret) { + ath11k_err(ab, "failed to get msi for mhi\n"); + kfree(mhi_ctrl); + return ret; + } + + mhi_ctrl->iova_start = 0; + mhi_ctrl->iova_stop = 0xffffffff; + mhi_ctrl->sbl_size = SZ_512K; + mhi_ctrl->seg_len = SZ_512K; + mhi_ctrl->fbc_download = true; + mhi_ctrl->runtime_get = ath11k_mhi_op_runtime_get; + mhi_ctrl->runtime_put = ath11k_mhi_op_runtime_put; + mhi_ctrl->status_cb = ath11k_mhi_op_status_cb; + mhi_ctrl->read_reg = ath11k_mhi_op_read_reg; + mhi_ctrl->write_reg = ath11k_mhi_op_write_reg; + + ret = mhi_register_controller(mhi_ctrl, &ath11k_mhi_config); + if (ret) { + ath11k_err(ab, "failed to register to mhi bus, err = %d\n", ret); + kfree(mhi_ctrl); + return ret; + } + + return 0; +} + +void ath11k_mhi_unregister(struct ath11k_pci *ab_pci) +{ + struct mhi_controller *mhi_ctrl = ab_pci->mhi_ctrl; + + mhi_unregister_controller(mhi_ctrl); + kfree(mhi_ctrl->irq); +} + +static char *ath11k_mhi_state_to_str(enum ath11k_mhi_state mhi_state) +{ + switch (mhi_state) { + case ATH11K_MHI_INIT: + return "INIT"; + case ATH11K_MHI_DEINIT: + return "DEINIT"; + case ATH11K_MHI_POWER_ON: + return "POWER_ON"; + case ATH11K_MHI_POWER_OFF: + return "POWER_OFF"; + case ATH11K_MHI_FORCE_POWER_OFF: + return "FORCE_POWER_OFF"; + case ATH11K_MHI_SUSPEND: + return "SUSPEND"; + case ATH11K_MHI_RESUME: + return "RESUME"; + case ATH11K_MHI_TRIGGER_RDDM: + return "TRIGGER_RDDM"; + case ATH11K_MHI_RDDM_DONE: + return "RDDM_DONE"; + default: + return "UNKNOWN"; + } +}; + +static void ath11k_mhi_set_state_bit(struct ath11k_pci *ab_pci, + enum ath11k_mhi_state mhi_state) +{ + struct ath11k_base *ab = ab_pci->ab; + + switch (mhi_state) { + case ATH11K_MHI_INIT: + set_bit(ATH11K_MHI_INIT, &ab_pci->mhi_state); + break; + case ATH11K_MHI_DEINIT: + clear_bit(ATH11K_MHI_INIT, &ab_pci->mhi_state); + break; + case ATH11K_MHI_POWER_ON: + set_bit(ATH11K_MHI_POWER_ON, &ab_pci->mhi_state); + break; + case ATH11K_MHI_POWER_OFF: + case ATH11K_MHI_FORCE_POWER_OFF: + clear_bit(ATH11K_MHI_POWER_ON, &ab_pci->mhi_state); + clear_bit(ATH11K_MHI_TRIGGER_RDDM, &ab_pci->mhi_state); + clear_bit(ATH11K_MHI_RDDM_DONE, &ab_pci->mhi_state); + break; + case ATH11K_MHI_SUSPEND: + set_bit(ATH11K_MHI_SUSPEND, &ab_pci->mhi_state); + break; + case ATH11K_MHI_RESUME: + clear_bit(ATH11K_MHI_SUSPEND, &ab_pci->mhi_state); + break; + case ATH11K_MHI_TRIGGER_RDDM: + set_bit(ATH11K_MHI_TRIGGER_RDDM, &ab_pci->mhi_state); + break; + case ATH11K_MHI_RDDM_DONE: + set_bit(ATH11K_MHI_RDDM_DONE, &ab_pci->mhi_state); + break; + default: + ath11k_err(ab, "unhandled mhi state (%d)\n", mhi_state); + } +} + +static int ath11k_mhi_check_state_bit(struct ath11k_pci *ab_pci, + enum ath11k_mhi_state mhi_state) +{ + struct ath11k_base *ab = ab_pci->ab; + + switch (mhi_state) { + case ATH11K_MHI_INIT: + if (!test_bit(ATH11K_MHI_INIT, &ab_pci->mhi_state)) + return 0; + break; + case ATH11K_MHI_DEINIT: + case ATH11K_MHI_POWER_ON: + if (test_bit(ATH11K_MHI_INIT, &ab_pci->mhi_state) && + !test_bit(ATH11K_MHI_POWER_ON, &ab_pci->mhi_state)) + return 0; + break; + case ATH11K_MHI_FORCE_POWER_OFF: + if (test_bit(ATH11K_MHI_POWER_ON, &ab_pci->mhi_state)) + return 0; + break; + case ATH11K_MHI_POWER_OFF: + case ATH11K_MHI_SUSPEND: + if (test_bit(ATH11K_MHI_POWER_ON, &ab_pci->mhi_state) && + !test_bit(ATH11K_MHI_SUSPEND, &ab_pci->mhi_state)) + return 0; + break; + case ATH11K_MHI_RESUME: + if (test_bit(ATH11K_MHI_SUSPEND, &ab_pci->mhi_state)) + return 0; + break; + case ATH11K_MHI_TRIGGER_RDDM: + if (test_bit(ATH11K_MHI_POWER_ON, &ab_pci->mhi_state) && + !test_bit(ATH11K_MHI_TRIGGER_RDDM, &ab_pci->mhi_state)) + return 0; + break; + case ATH11K_MHI_RDDM_DONE: + return 0; + default: + ath11k_err(ab, "unhandled mhi state: %s(%d)\n", + ath11k_mhi_state_to_str(mhi_state), mhi_state); + } + + ath11k_err(ab, "failed to set mhi state %s(%d) in current mhi state (0x%lx)\n", + ath11k_mhi_state_to_str(mhi_state), mhi_state, + ab_pci->mhi_state); + + return -EINVAL; +} + +static int ath11k_mhi_set_state(struct ath11k_pci *ab_pci, + enum ath11k_mhi_state mhi_state) +{ + struct ath11k_base *ab = ab_pci->ab; + int ret; + + ret = ath11k_mhi_check_state_bit(ab_pci, mhi_state); + if (ret) + goto out; + + ath11k_dbg(ab, ATH11K_DBG_PCI, "setting mhi state: %s(%d)\n", + ath11k_mhi_state_to_str(mhi_state), mhi_state); + + switch (mhi_state) { + case ATH11K_MHI_INIT: + ret = mhi_prepare_for_power_up(ab_pci->mhi_ctrl); + break; + case ATH11K_MHI_DEINIT: + mhi_unprepare_after_power_down(ab_pci->mhi_ctrl); + ret = 0; + break; + case ATH11K_MHI_POWER_ON: + ret = mhi_async_power_up(ab_pci->mhi_ctrl); + break; + case ATH11K_MHI_POWER_OFF: + mhi_power_down(ab_pci->mhi_ctrl, true); + ret = 0; + break; + case ATH11K_MHI_FORCE_POWER_OFF: + mhi_power_down(ab_pci->mhi_ctrl, false); + ret = 0; + break; + case ATH11K_MHI_SUSPEND: + break; + case ATH11K_MHI_RESUME: + break; + case ATH11K_MHI_TRIGGER_RDDM: + ret = mhi_force_rddm_mode(ab_pci->mhi_ctrl); + break; + case ATH11K_MHI_RDDM_DONE: + break; + default: + ath11k_err(ab, "unhandled MHI state (%d)\n", mhi_state); + ret = -EINVAL; + } + + if (ret) + goto out; + + ath11k_mhi_set_state_bit(ab_pci, mhi_state); + + return 0; + +out: + ath11k_err(ab, "failed to set mhi state: %s(%d)\n", + ath11k_mhi_state_to_str(mhi_state), mhi_state); + return ret; +} + +int ath11k_mhi_start(struct ath11k_pci *ab_pci) +{ + int ret; + + ab_pci->mhi_ctrl->timeout_ms = MHI_TIMEOUT_DEFAULT_MS; + + ret = ath11k_mhi_set_state(ab_pci, ATH11K_MHI_INIT); + if (ret) + goto out; + + ret = ath11k_mhi_set_state(ab_pci, ATH11K_MHI_POWER_ON); + if (ret) + goto out; + + return 0; + +out: + return ret; +} + +void ath11k_mhi_stop(struct ath11k_pci *ab_pci) +{ + ath11k_mhi_set_state(ab_pci, ATH11K_MHI_RESUME); + ath11k_mhi_set_state(ab_pci, ATH11K_MHI_POWER_OFF); + ath11k_mhi_set_state(ab_pci, ATH11K_MHI_DEINIT); +} + diff --git a/drivers/net/wireless/ath/ath11k/mhi.h b/drivers/net/wireless/ath/ath11k/mhi.h new file mode 100644 index 000000000000..3c91881b4fbd --- /dev/null +++ b/drivers/net/wireless/ath/ath11k/mhi.h @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: BSD-3-Clause-Clear */ +/* + * Copyright (c) 2020 The Linux Foundation. All rights reserved. + */ +#ifndef _ATH11K_MHI_H +#define _ATH11K_MHI_H + +#include "pci.h" + +enum ath11k_mhi_state { + ATH11K_MHI_INIT, + ATH11K_MHI_DEINIT, + ATH11K_MHI_POWER_ON, + ATH11K_MHI_POWER_OFF, + ATH11K_MHI_FORCE_POWER_OFF, + ATH11K_MHI_SUSPEND, + ATH11K_MHI_RESUME, + ATH11K_MHI_TRIGGER_RDDM, + ATH11K_MHI_RDDM, + ATH11K_MHI_RDDM_DONE, +}; + +int ath11k_mhi_start(struct ath11k_pci *ar_pci); +void ath11k_mhi_stop(struct ath11k_pci *ar_pci); +int ath11k_mhi_register(struct ath11k_pci *ar_pci); +void ath11k_mhi_unregister(struct ath11k_pci *ar_pci); + +#endif diff --git a/drivers/net/wireless/ath/ath11k/pci.c b/drivers/net/wireless/ath/ath11k/pci.c index ff401d2871f3..6f7789fa23d6 100644 --- a/drivers/net/wireless/ath/ath11k/pci.c +++ b/drivers/net/wireless/ath/ath11k/pci.c @@ -9,6 +9,8 @@ #include "pci.h" #include "core.h" +#include "hif.h" +#include "mhi.h" #include "debug.h" #define ATH11K_PCI_BAR_NUM 0 @@ -34,6 +36,40 @@ static const struct ath11k_msi_config msi_config = { }, }; +int ath11k_pci_get_msi_irq(struct device *dev, unsigned int vector) +{ + struct pci_dev *pci_dev = to_pci_dev(dev); + + return pci_irq_vector(pci_dev, vector); +} + +int ath11k_pci_get_user_msi_assignment(struct ath11k_pci *ab_pci, char *user_name, + int *num_vectors, u32 *user_base_data, + u32 *base_vector) +{ + struct ath11k_base *ab = ab_pci->ab; + int idx; + + for (idx = 0; idx < msi_config.total_users; idx++) { + if (strcmp(user_name, msi_config.users[idx].name) == 0) { + *num_vectors = msi_config.users[idx].num_vectors; + *user_base_data = msi_config.users[idx].base_vector + + ab_pci->msi_ep_base_data; + *base_vector = msi_config.users[idx].base_vector; + + ath11k_dbg(ab, ATH11K_DBG_PCI, "Assign MSI to user: %s, num_vectors: %d, user_base_data: %u, base_vector: %u\n", + user_name, *num_vectors, *user_base_data, + *base_vector); + + return 0; + } + } + + ath11k_err(ab, "Failed to find MSI assignment for %s!\n", user_name); + + return -EINVAL; +} + static int ath11k_pci_enable_msi(struct ath11k_pci *ab_pci) { struct ath11k_base *ab = ab_pci->ab; @@ -161,6 +197,32 @@ static void ath11k_pci_free_region(struct ath11k_pci *ab_pci) pci_disable_device(pci_dev); } +static int ath11k_pci_power_up(struct ath11k_base *ab) +{ + struct ath11k_pci *ab_pci = ath11k_pci_priv(ab); + int ret; + + ret = ath11k_mhi_start(ab_pci); + if (ret) { + ath11k_err(ab, "failed to start mhi: %d\n", ret); + return ret; + } + + return 0; +} + +static void ath11k_pci_power_down(struct ath11k_base *ab) +{ + struct ath11k_pci *ab_pci = ath11k_pci_priv(ab); + + ath11k_mhi_stop(ab_pci); +} + +static __maybe_unused const struct ath11k_hif_ops ath11k_pci_hif_ops = { + .power_down = ath11k_pci_power_down, + .power_up = ath11k_pci_power_up, +}; + static int ath11k_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pci_dev) { @@ -212,6 +274,12 @@ static int ath11k_pci_probe(struct pci_dev *pdev, if (ret) goto err_pci_disable_msi; + ret = ath11k_mhi_register(ab_pci); + if (ret) { + ath11k_err(ab, "failed to register mhi: %d\n", ret); + goto err_pci_disable_msi; + } + return 0; err_pci_disable_msi: @@ -232,16 +300,25 @@ static void ath11k_pci_remove(struct pci_dev *pdev) struct ath11k_pci *ab_pci = ath11k_pci_priv(ab); set_bit(ATH11K_FLAG_UNREGISTERING, &ab->dev_flags); + ath11k_mhi_unregister(ab_pci); ath11k_pci_disable_msi(ab_pci); ath11k_pci_free_region(ab_pci); ath11k_core_free(ab); } +static void ath11k_pci_shutdown(struct pci_dev *pdev) +{ + struct ath11k_base *ab = pci_get_drvdata(pdev); + + ath11k_pci_power_down(ab); +} + static struct pci_driver ath11k_pci_driver = { .name = "ath11k_pci", .id_table = ath11k_pci_id_table, .probe = ath11k_pci_probe, .remove = ath11k_pci_remove, + .shutdown = ath11k_pci_shutdown, }; static int ath11k_pci_init(void) diff --git a/drivers/net/wireless/ath/ath11k/pci.h b/drivers/net/wireless/ath/ath11k/pci.h index db75eae26f71..85e033069d7a 100644 --- a/drivers/net/wireless/ath/ath11k/pci.h +++ b/drivers/net/wireless/ath/ath11k/pci.h @@ -2,6 +2,10 @@ /* * Copyright (c) 2019-2020 The Linux Foundation. All rights reserved. */ +#ifndef _ATH11K_PCI_H +#define _ATH11K_PCI_H + +#include #include "core.h" @@ -21,10 +25,20 @@ struct ath11k_pci { struct pci_dev *pdev; struct ath11k_base *ab; u16 dev_id; + char amss_path[100]; u32 msi_ep_base_data; + struct mhi_controller *mhi_ctrl; + unsigned long mhi_state; }; static inline struct ath11k_pci *ath11k_pci_priv(struct ath11k_base *ab) { return (struct ath11k_pci *)ab->drv_priv; } + +int ath11k_pci_get_user_msi_assignment(struct ath11k_pci *ar_pci, char *user_name, + int *num_vectors, u32 *user_base_data, + u32 *base_vector); +int ath11k_pci_get_msi_irq(struct device *dev, unsigned int vector); + +#endif