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Tue, 15 Oct 2024 18:28:44 GMT Received: from hu-rajkbhag-blr.qualcomm.com (10.80.80.8) by nalasex01b.na.qualcomm.com (10.47.209.197) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Tue, 15 Oct 2024 11:28:40 -0700 From: Raj Kumar Bhagat To: CC: , Kalle Valo , "Rob Herring" , Krzysztof Kozlowski , "Conor Dooley" , Jeff Johnson , "Bjorn Andersson" , Konrad Dybcio , , , , Sowmiya Sree Elavalagan , Raj Kumar Bhagat Subject: [PATCH v2 19/22] wifi: ath12k: Register various userPD interrupts and save SMEM entries Date: Tue, 15 Oct 2024 23:56:34 +0530 Message-ID: <20241015182637.955753-20-quic_rajkbhag@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241015182637.955753-1-quic_rajkbhag@quicinc.com> References: <20241015182637.955753-1-quic_rajkbhag@quicinc.com> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01b.na.qualcomm.com (10.47.209.197) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: NnOPtUzGbcD0iI9kV-lT4_76y-a6N-FB X-Proofpoint-ORIG-GUID: NnOPtUzGbcD0iI9kV-lT4_76y-a6N-FB X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 lowpriorityscore=0 phishscore=0 suspectscore=0 impostorscore=0 bulkscore=0 mlxscore=0 mlxlogscore=999 malwarescore=0 priorityscore=1501 adultscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410150125 From: Sowmiya Sree Elavalagan Q6 and ath12k driver communicates using SMEM and IRQs. Spawn interrupt is triggered once the userPD thread is spawned. Ready interrupts denotes userPD is completely powered up and ready. Stop-ack is to acknowledge the ath12k driver that userPD is stopped. Ath12k driver needs to set spawn bit in SMEM to instruct Q6 to spawn a userPD. Similarly stop bit is set when userPD needs to be stopped. Tested-on: IPQ5332 hw1.0 AHB WLAN.WBE.1.3.1-00130-QCAHKSWPL_SILICONZ-1 Signed-off-by: Sowmiya Sree Elavalagan Signed-off-by: Raj Kumar Bhagat --- drivers/net/wireless/ath/ath12k/ahb.c | 84 ++++++++++++++++++++++++++- drivers/net/wireless/ath/ath12k/ahb.h | 16 +++++ drivers/net/wireless/ath/ath12k/hw.h | 1 + 3 files changed, 99 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ath/ath12k/ahb.c b/drivers/net/wireless/ath/ath12k/ahb.c index 6c3943b63ac5..7b898f01c255 100644 --- a/drivers/net/wireless/ath/ath12k/ahb.c +++ b/drivers/net/wireless/ath/ath12k/ahb.c @@ -28,6 +28,11 @@ static const struct of_device_id ath12k_ahb_of_match[] = { MODULE_DEVICE_TABLE(of, ath12k_ahb_of_match); #define ATH12K_IRQ_CE0_OFFSET 4 +#define ATH12K_MAX_UPDS 1 +#define ATH12K_UPD_IRQ_WRD_LEN 18 +static const char ath12k_userpd_irq[][9] = {"spawn", + "ready", + "stop-ack"}; static const char *irq_name[ATH12K_IRQ_NUM_MAX] = { "misc-pulse1", @@ -608,6 +613,78 @@ static const struct ath12k_hif_ops ath12k_ahb_hif_ops_ipq5332 = { .map_service_to_pipe = ath12k_ahb_map_service_to_pipe, }; +static irqreturn_t ath12k_userpd_irq_handler(int irq, void *data) +{ + struct ath12k_base *ab = data; + struct ath12k_ahb *ab_ahb = ath12k_ab_to_ahb(ab); + + if (irq == ab_ahb->userpd_irq_num[ATH12K_USERPD_SPAWN_IRQ]) { + complete(&ab_ahb->userpd_spawned); + } else if (irq == ab_ahb->userpd_irq_num[ATH12K_USERPD_READY_IRQ]) { + complete(&ab_ahb->userpd_ready); + } else if (irq == ab_ahb->userpd_irq_num[ATH12K_USERPD_STOP_ACK_IRQ]) { + complete(&ab_ahb->userpd_stopped); + } else { + ath12k_err(ab, "Invalid userpd interrupt\n"); + return IRQ_NONE; + } + + return IRQ_HANDLED; +} + +static int ath12k_ahb_config_rproc_irq(struct ath12k_base *ab) +{ + struct ath12k_ahb *ab_ahb = ath12k_ab_to_ahb(ab); + int i, ret; + char *upd_irq_name; + + for (i = 0; i < ATH12K_USERPD_MAX_IRQ; i++) { + ab_ahb->userpd_irq_num[i] = platform_get_irq_byname(ab->pdev, + ath12k_userpd_irq[i]); + if (ab_ahb->userpd_irq_num[i] < 0) { + ath12k_err(ab, "Failed to get %s irq: %d", ath12k_userpd_irq[i], + ab_ahb->userpd_irq_num[i]); + return -EINVAL; + } + + upd_irq_name = devm_kzalloc(&ab->pdev->dev, ATH12K_UPD_IRQ_WRD_LEN, + GFP_KERNEL); + if (!upd_irq_name) + return -ENOMEM; + + scnprintf(upd_irq_name, ATH12K_UPD_IRQ_WRD_LEN, "UserPD%u-%s", + ab_ahb->userpd_id, ath12k_userpd_irq[i]); + ret = devm_request_threaded_irq(&ab->pdev->dev, ab_ahb->userpd_irq_num[i], + NULL, ath12k_userpd_irq_handler, + IRQF_TRIGGER_RISING | IRQF_ONESHOT, + upd_irq_name, ab); + if (ret) { + ath12k_err(ab, "Request %s irq failed: %d\n", + ath12k_userpd_irq[i], ret); + return ret; + } + } + + ab_ahb->spawn_state = devm_qcom_smem_state_get(&ab->pdev->dev, "spawn", + &ab_ahb->spawn_bit); + if (IS_ERR(ab_ahb->spawn_state)) { + ath12k_err(ab, "Failed to acquire spawn state\n"); + return PTR_ERR(ab_ahb->spawn_state); + } + + ab_ahb->stop_state = devm_qcom_smem_state_get(&ab->pdev->dev, "stop", + &ab_ahb->stop_bit); + if (IS_ERR(ab_ahb->stop_state)) { + ath12k_err(ab, "Failed to acquire stop state\n"); + return PTR_ERR(ab_ahb->stop_state); + } + + init_completion(&ab_ahb->userpd_spawned); + init_completion(&ab_ahb->userpd_ready); + init_completion(&ab_ahb->userpd_stopped); + return 0; +} + static int ath12k_ahb_root_pd_state_notifier(struct notifier_block *nb, const unsigned long event, void *data) { @@ -719,7 +796,8 @@ static int ath12k_ahb_configure_rproc(struct ath12k_base *ab) goto unreg_notifier; } } - return 0; + + return ath12k_ahb_config_rproc_irq(ab); unreg_notifier: ath12k_ahb_unregister_rproc_notifier(ab); @@ -893,13 +971,14 @@ static int ath12k_ahb_probe(struct platform_device *pdev) struct device_node *mem_node; struct ath12k_ahb *ab_ahb; enum ath12k_hw_rev hw_rev; - u32 addr; + u32 addr, userpd_id; int ret; hw_rev = ath12k_ahb_get_hw_rev(pdev); switch (hw_rev) { case ATH12K_HW_IPQ5332_HW10: hif_ops = &ath12k_ahb_hif_ops_ipq5332; + userpd_id = ATH12K_IPQ5332_USERPD_ID; break; default: dev_err(&pdev->dev, "Unsupported device type %d\n", hw_rev); @@ -925,6 +1004,7 @@ static int ath12k_ahb_probe(struct platform_device *pdev) platform_set_drvdata(pdev, ab); ab_ahb = ath12k_ab_to_ahb(ab); ab_ahb->ab = ab; + ab_ahb->userpd_id = userpd_id; /* Set fixed_mem_region to true for platforms that support fixed memory * reservation from DT. If memory is reserved from DT for FW, ath12k driver diff --git a/drivers/net/wireless/ath/ath12k/ahb.h b/drivers/net/wireless/ath/ath12k/ahb.h index d1fc63091fb0..0999e2bbe970 100644 --- a/drivers/net/wireless/ath/ath12k/ahb.h +++ b/drivers/net/wireless/ath/ath12k/ahb.h @@ -25,6 +25,13 @@ enum ath12k_ahb_smp2p_msg_id { ATH12K_AHB_POWER_SAVE_EXIT, }; +enum ath12k_ahb_userpd_irq { + ATH12K_USERPD_SPAWN_IRQ, + ATH12K_USERPD_READY_IRQ, + ATH12K_USERPD_STOP_ACK_IRQ, + ATH12K_USERPD_MAX_IRQ, +}; + struct ath12k_base; struct ath12k_ahb { @@ -34,6 +41,15 @@ struct ath12k_ahb { struct completion rootpd_ready; struct notifier_block root_pd_nb; void *root_pd_notifier; + struct qcom_smem_state *spawn_state; + struct qcom_smem_state *stop_state; + struct completion userpd_spawned; + struct completion userpd_ready; + struct completion userpd_stopped; + u32 userpd_id; + u32 spawn_bit; + u32 stop_bit; + int userpd_irq_num[ATH12K_USERPD_MAX_IRQ]; }; static inline struct ath12k_ahb *ath12k_ab_to_ahb(struct ath12k_base *ab) diff --git a/drivers/net/wireless/ath/ath12k/hw.h b/drivers/net/wireless/ath/ath12k/hw.h index b3e2a5d7e0e4..cd034ed14ce3 100644 --- a/drivers/net/wireless/ath/ath12k/hw.h +++ b/drivers/net/wireless/ath/ath12k/hw.h @@ -97,6 +97,7 @@ #define ATH12K_REGDB_FILE_NAME "regdb.bin" #define ATH12K_PCIE_MAX_PAYLOAD_SIZE 128 +#define ATH12K_IPQ5332_USERPD_ID 1 enum ath12k_hw_rate_cck { ATH12K_HW_RATE_CCK_LP_11M = 0,