Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751854AbbL1Bfk (ORCPT ); Sun, 27 Dec 2015 20:35:40 -0500 Received: from mail-pa0-f48.google.com ([209.85.220.48]:35711 "EHLO mail-pa0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751355AbbL1Bek (ORCPT ); Sun, 27 Dec 2015 20:34:40 -0500 From: Bjorn Andersson X-Google-Original-From: Bjorn Andersson To: Eugene Krasnikov , Kalle Valo Cc: Ian Campbell , Mark Rutland , Pawel Moll , Rob Herring , fengwei.yin@linaro.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, wcn36xx@lists.infradead.org Subject: [PATCH 3/4] wcn36xx: Transition driver to SMD client Date: Sun, 27 Dec 2015 17:34:26 -0800 Message-Id: <1451266467-15377-4-git-send-email-bjorn.andersson@sonymobile.com> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1451266467-15377-1-git-send-email-bjorn.andersson@sonymobile.com> References: <1451266467-15377-1-git-send-email-bjorn.andersson@sonymobile.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 12704 Lines: 411 The wcn36xx wifi driver follows the life cycle of the WLAN_CTRL SMD channel, as such it should be a SMD client. This patch makes this transition, now that we have the necessary frameworks available. Signed-off-by: Bjorn Andersson --- drivers/net/wireless/ath/wcn36xx/Kconfig | 2 +- drivers/net/wireless/ath/wcn36xx/dxe.c | 16 +++-- drivers/net/wireless/ath/wcn36xx/main.c | 111 +++++++++++++++++------------ drivers/net/wireless/ath/wcn36xx/smd.c | 26 ++++--- drivers/net/wireless/ath/wcn36xx/smd.h | 4 ++ drivers/net/wireless/ath/wcn36xx/wcn36xx.h | 21 ++---- 6 files changed, 99 insertions(+), 81 deletions(-) diff --git a/drivers/net/wireless/ath/wcn36xx/Kconfig b/drivers/net/wireless/ath/wcn36xx/Kconfig index 591ebaea8265..394fe5b77c90 100644 --- a/drivers/net/wireless/ath/wcn36xx/Kconfig +++ b/drivers/net/wireless/ath/wcn36xx/Kconfig @@ -1,6 +1,6 @@ config WCN36XX tristate "Qualcomm Atheros WCN3660/3680 support" - depends on MAC80211 && HAS_DMA + depends on MAC80211 && HAS_DMA && QCOM_SMD ---help--- This module adds support for wireless adapters based on Qualcomm Atheros WCN3660 and WCN3680 mobile chipsets. diff --git a/drivers/net/wireless/ath/wcn36xx/dxe.c b/drivers/net/wireless/ath/wcn36xx/dxe.c index f8dfa05b290a..47f3937a7ab9 100644 --- a/drivers/net/wireless/ath/wcn36xx/dxe.c +++ b/drivers/net/wireless/ath/wcn36xx/dxe.c @@ -23,6 +23,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include +#include #include "wcn36xx.h" #include "txrx.h" @@ -150,9 +151,12 @@ int wcn36xx_dxe_alloc_ctl_blks(struct wcn36xx *wcn) goto out_err; /* Initialize SMSM state Clear TX Enable RING EMPTY STATE */ - ret = wcn->ctrl_ops->smsm_change_state( - WCN36XX_SMSM_WLAN_TX_ENABLE, - WCN36XX_SMSM_WLAN_TX_RINGS_EMPTY); + ret = qcom_smem_state_update_bits(wcn->tx_enable_state, + WCN36XX_SMSM_WLAN_TX_ENABLE | + WCN36XX_SMSM_WLAN_TX_RINGS_EMPTY, + WCN36XX_SMSM_WLAN_TX_RINGS_EMPTY); + if (ret) + goto out_err; return 0; @@ -676,9 +680,9 @@ int wcn36xx_dxe_tx_frame(struct wcn36xx *wcn, * notify chip about new frame through SMSM bus. */ if (is_low && vif_priv->pw_state == WCN36XX_BMPS) { - wcn->ctrl_ops->smsm_change_state( - 0, - WCN36XX_SMSM_WLAN_TX_ENABLE); + qcom_smem_state_update_bits(wcn->tx_rings_empty_state, + WCN36XX_SMSM_WLAN_TX_ENABLE, + WCN36XX_SMSM_WLAN_TX_ENABLE); } else { /* indicate End Of Packet and generate interrupt on descriptor * done. diff --git a/drivers/net/wireless/ath/wcn36xx/main.c b/drivers/net/wireless/ath/wcn36xx/main.c index 7c169abdbafe..8659e3f997d2 100644 --- a/drivers/net/wireless/ath/wcn36xx/main.c +++ b/drivers/net/wireless/ath/wcn36xx/main.c @@ -19,6 +19,9 @@ #include #include #include +#include +#include +#include #include "wcn36xx.h" unsigned int wcn36xx_dbg_mask; @@ -981,48 +984,63 @@ static int wcn36xx_init_ieee80211(struct wcn36xx *wcn) } static int wcn36xx_platform_get_resources(struct wcn36xx *wcn, - struct platform_device *pdev) + struct device *dev) { - struct resource *res; + u32 mmio[2]; + int ret; + /* Set TX IRQ */ - res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, - "wcnss_wlantx_irq"); - if (!res) { + wcn->tx_irq = irq_of_parse_and_map(dev->of_node, 0); + if (!wcn->tx_irq) { wcn36xx_err("failed to get tx_irq\n"); return -ENOENT; } - wcn->tx_irq = res->start; /* Set RX IRQ */ - res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, - "wcnss_wlanrx_irq"); - if (!res) { + wcn->rx_irq = irq_of_parse_and_map(dev->of_node, 1); + if (!wcn->rx_irq) { wcn36xx_err("failed to get rx_irq\n"); return -ENOENT; } - wcn->rx_irq = res->start; + + /* Acquire SMSM tx enable handle */ + wcn->tx_enable_state = qcom_smem_state_get(dev, "tx-enable", + &wcn->tx_enable_state_bit); + if (IS_ERR(wcn->tx_enable_state)) { + wcn36xx_err("failed to get tx-enable state\n"); + return -ENOENT; + } + + /* Acquire SMSM tx rings empty handle */ + wcn->tx_rings_empty_state = qcom_smem_state_get(dev, "tx-rings-empty", + &wcn->tx_rings_empty_state_bit); + if (IS_ERR(wcn->tx_rings_empty_state)) { + wcn36xx_err("failed to get tx-rings-empty state\n"); + return -ENOENT; + } /* Map the memory */ - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, - "wcnss_mmio"); - if (!res) { - wcn36xx_err("failed to get mmio\n"); + ret = of_property_read_u32_array(dev->of_node, "qcom,wcnss-mmio", mmio, 2); + if (ret) { + wcn36xx_err("failed to get qcom,wcnss-mmio\n"); return -ENOENT; } - wcn->mmio = ioremap(res->start, resource_size(res)); + + wcn->mmio = ioremap(mmio[0], mmio[1]); if (!wcn->mmio) { wcn36xx_err("failed to map io memory\n"); return -ENOMEM; } + return 0; } -static int wcn36xx_probe(struct platform_device *pdev) +static int wcn36xx_probe(struct qcom_smd_device *sdev) { struct ieee80211_hw *hw; struct wcn36xx *wcn; int ret; - u8 addr[ETH_ALEN]; + const u8 *addr; wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n"); @@ -1032,20 +1050,27 @@ static int wcn36xx_probe(struct platform_device *pdev) ret = -ENOMEM; goto out_err; } - platform_set_drvdata(pdev, hw); + dev_set_drvdata(&sdev->dev, hw); wcn = hw->priv; wcn->hw = hw; - wcn->dev = &pdev->dev; - wcn->ctrl_ops = pdev->dev.platform_data; + wcn->dev = &sdev->dev; + wcn->smd_channel = sdev->channel; mutex_init(&wcn->hal_mutex); - if (!wcn->ctrl_ops->get_hw_mac(addr)) { + sdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); + + addr = of_get_property(sdev->dev.of_node, "local-mac-address", &ret); + if (addr && ret != ETH_ALEN) { + wcn36xx_err("invalid local-mac-address\n"); + ret = -EINVAL; + goto out_err; + } else if (addr) { wcn36xx_info("mac address: %pM\n", addr); SET_IEEE80211_PERM_ADDR(wcn->hw, addr); } - ret = wcn36xx_platform_get_resources(wcn, pdev); + ret = wcn36xx_platform_get_resources(wcn, &sdev->dev); if (ret) goto out_wq; @@ -1063,9 +1088,10 @@ out_wq: out_err: return ret; } -static int wcn36xx_remove(struct platform_device *pdev) + +static void wcn36xx_remove(struct qcom_smd_device *sdev) { - struct ieee80211_hw *hw = platform_get_drvdata(pdev); + struct ieee80211_hw *hw = dev_get_drvdata(&sdev->dev); struct wcn36xx *wcn = hw->priv; wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n"); @@ -1073,41 +1099,34 @@ static int wcn36xx_remove(struct platform_device *pdev) mutex_destroy(&wcn->hal_mutex); ieee80211_unregister_hw(hw); + + qcom_smem_state_put(wcn->tx_enable_state); + qcom_smem_state_put(wcn->tx_rings_empty_state); + iounmap(wcn->mmio); ieee80211_free_hw(hw); - - return 0; } -static const struct platform_device_id wcn36xx_platform_id_table[] = { - { - .name = "wcn36xx", - .driver_data = 0 - }, + +static const struct of_device_id wcn36xx_of_match[] = { + { .compatible = "qcom,wcn3620-wlan" }, + { .compatible = "qcom,wcn3660-wlan" }, + { .compatible = "qcom,wcn3680-wlan" }, {} }; -MODULE_DEVICE_TABLE(platform, wcn36xx_platform_id_table); +MODULE_DEVICE_TABLE(of, wcn36xx_of_match); -static struct platform_driver wcn36xx_driver = { +static struct qcom_smd_driver wcn36xx_driver = { .probe = wcn36xx_probe, .remove = wcn36xx_remove, + .callback = wcn36xx_smd_rsp_process, .driver = { .name = "wcn36xx", + .of_match_table = wcn36xx_of_match, + .owner = THIS_MODULE, }, - .id_table = wcn36xx_platform_id_table, }; -static int __init wcn36xx_init(void) -{ - platform_driver_register(&wcn36xx_driver); - return 0; -} -module_init(wcn36xx_init); - -static void __exit wcn36xx_exit(void) -{ - platform_driver_unregister(&wcn36xx_driver); -} -module_exit(wcn36xx_exit); +module_qcom_smd_driver(wcn36xx_driver); MODULE_LICENSE("Dual BSD/GPL"); MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com"); diff --git a/drivers/net/wireless/ath/wcn36xx/smd.c b/drivers/net/wireless/ath/wcn36xx/smd.c index 4307429740a9..2bf42787a4af 100644 --- a/drivers/net/wireless/ath/wcn36xx/smd.c +++ b/drivers/net/wireless/ath/wcn36xx/smd.c @@ -19,6 +19,7 @@ #include #include #include +#include #include "smd.h" struct wcn36xx_cfg_val { @@ -253,7 +254,7 @@ static int wcn36xx_smd_send_and_wait(struct wcn36xx *wcn, size_t len) init_completion(&wcn->hal_rsp_compl); start = jiffies; - ret = wcn->ctrl_ops->tx(wcn->hal_buf, len); + ret = qcom_smd_send(wcn->smd_channel, wcn->hal_buf, len); if (ret) { wcn36xx_err("HAL TX failed\n"); goto out; @@ -2100,9 +2101,13 @@ out: mutex_unlock(&wcn->hal_mutex); return ret; } -static void wcn36xx_smd_rsp_process(struct wcn36xx *wcn, void *buf, size_t len) + +int wcn36xx_smd_rsp_process(struct qcom_smd_device *sdev, + const void *buf, size_t len) { - struct wcn36xx_hal_msg_header *msg_header = buf; + const struct wcn36xx_hal_msg_header *msg_header = buf; + struct ieee80211_hw *hw = dev_get_drvdata(&sdev->dev); + struct wcn36xx *wcn = hw->priv; struct wcn36xx_hal_ind_msg *msg_ind; wcn36xx_dbg_dump(WCN36XX_DBG_SMD_DUMP, "SMD <<< ", buf, len); @@ -2151,7 +2156,7 @@ static void wcn36xx_smd_rsp_process(struct wcn36xx *wcn, void *buf, size_t len) case WCN36XX_HAL_OTA_TX_COMPL_IND: case WCN36XX_HAL_MISSED_BEACON_IND: case WCN36XX_HAL_DELETE_STA_CONTEXT_IND: - msg_ind = kmalloc(sizeof(*msg_ind) + len, GFP_KERNEL); + msg_ind = kmalloc(sizeof(*msg_ind) + len, GFP_ATOMIC); if (!msg_ind) { /* * FIXME: Do something smarter then just @@ -2175,6 +2180,8 @@ static void wcn36xx_smd_rsp_process(struct wcn36xx *wcn, void *buf, size_t len) wcn36xx_err("SMD_EVENT (%d) not supported\n", msg_header->msg_type); } + + return 0; } static void wcn36xx_ind_smd_work(struct work_struct *work) { @@ -2232,22 +2239,13 @@ int wcn36xx_smd_open(struct wcn36xx *wcn) INIT_LIST_HEAD(&wcn->hal_ind_queue); spin_lock_init(&wcn->hal_ind_lock); - ret = wcn->ctrl_ops->open(wcn, wcn36xx_smd_rsp_process); - if (ret) { - wcn36xx_err("failed to open control channel\n"); - goto free_wq; - } - - return ret; + return 0; -free_wq: - destroy_workqueue(wcn->hal_ind_wq); out: return ret; } void wcn36xx_smd_close(struct wcn36xx *wcn) { - wcn->ctrl_ops->close(); destroy_workqueue(wcn->hal_ind_wq); } diff --git a/drivers/net/wireless/ath/wcn36xx/smd.h b/drivers/net/wireless/ath/wcn36xx/smd.h index 21cc4ac7b5ca..4d96d56d266f 100644 --- a/drivers/net/wireless/ath/wcn36xx/smd.h +++ b/drivers/net/wireless/ath/wcn36xx/smd.h @@ -60,6 +60,7 @@ struct wcn36xx_hal_ind_msg { }; struct wcn36xx; +struct qcom_smd_device; int wcn36xx_smd_open(struct wcn36xx *wcn); void wcn36xx_smd_close(struct wcn36xx *wcn); @@ -136,4 +137,7 @@ int wcn36xx_smd_del_ba(struct wcn36xx *wcn, u16 tid, u8 sta_index); int wcn36xx_smd_trigger_ba(struct wcn36xx *wcn, u8 sta_index); int wcn36xx_smd_update_cfg(struct wcn36xx *wcn, u32 cfg_id, u32 value); + +int wcn36xx_smd_rsp_process(struct qcom_smd_device *sdev, + const void *buf, size_t len); #endif /* _SMD_H_ */ diff --git a/drivers/net/wireless/ath/wcn36xx/wcn36xx.h b/drivers/net/wireless/ath/wcn36xx/wcn36xx.h index 7997cc1312ee..4be81f66e167 100644 --- a/drivers/net/wireless/ath/wcn36xx/wcn36xx.h +++ b/drivers/net/wireless/ath/wcn36xx/wcn36xx.h @@ -103,19 +103,6 @@ struct nv_data { u8 table; }; -/* Interface for platform control path - * - * @open: hook must be called when wcn36xx wants to open control channel. - * @tx: sends a buffer. - */ -struct wcn36xx_platform_ctrl_ops { - int (*open)(void *drv_priv, void *rsp_cb); - void (*close)(void); - int (*tx)(char *buf, size_t len); - int (*get_hw_mac)(u8 *addr); - int (*smsm_change_state)(u32 clear_mask, u32 set_mask); -}; - /** * struct wcn36xx_vif - holds VIF related fields * @@ -204,7 +191,13 @@ struct wcn36xx { int rx_irq; void __iomem *mmio; - struct wcn36xx_platform_ctrl_ops *ctrl_ops; + struct qcom_smd_channel *smd_channel; + + struct qcom_smem_state *tx_enable_state; + unsigned tx_enable_state_bit; + struct qcom_smem_state *tx_rings_empty_state; + unsigned tx_rings_empty_state_bit; + /* * smd_buf must be protected with smd_mutex to garantee * that all messages are sent one after another -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/