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Mon, 13 Feb 2023 18:53:18 GMT Received: from hu-molvera-lv.qualcomm.com (10.49.16.6) by nasanex01b.na.qualcomm.com (10.46.141.250) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.36; Mon, 13 Feb 2023 10:53:17 -0800 From: Melody Olvera To: Andy Gross , Bjorn Andersson , Rob Herring , Krzysztof Kozlowski , Jassi Brar , Mathieu Poirier , Robert Marko , Guru Das Srinagesh CC: Konrad Dybcio , Manivannan Sadhasivam , Melody Olvera , , , , Subject: [PATCH 8/9] remoteproc: qcom_q6v5_pas: Add support to attach a DSP Date: Mon, 13 Feb 2023 10:52:17 -0800 Message-ID: <20230213185218.166520-9-quic_molvera@quicinc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230213185218.166520-1-quic_molvera@quicinc.com> References: <20230213185218.166520-1-quic_molvera@quicinc.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.49.16.6] X-ClientProxiedBy: nalasex01c.na.qualcomm.com (10.47.97.35) To nasanex01b.na.qualcomm.com (10.46.141.250) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: WB42UDsyWb7It8hJognskUM5RRWuhHT0 X-Proofpoint-ORIG-GUID: WB42UDsyWb7It8hJognskUM5RRWuhHT0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.170.22 definitions=2023-02-13_12,2023-02-13_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 clxscore=1015 impostorscore=0 bulkscore=0 priorityscore=1501 phishscore=0 lowpriorityscore=0 spamscore=0 malwarescore=0 mlxlogscore=895 adultscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2302130165 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Some chipsets will have DSPs which will have begun running prior to linux booting, so add support to late attach these DSPs by adding support for: - run-time checking of an offline or running DSP via rmb register - a late attach framework to attach to the running DSP - a handshake mechanism to ensure full and proper booting via rmb Signed-off-by: Melody Olvera --- drivers/remoteproc/qcom_q6v5_pas.c | 103 ++++++++++++++++++++++++++++- 1 file changed, 102 insertions(+), 1 deletion(-) diff --git a/drivers/remoteproc/qcom_q6v5_pas.c b/drivers/remoteproc/qcom_q6v5_pas.c index 1e14ae4d233a..7a1f0f898032 100644 --- a/drivers/remoteproc/qcom_q6v5_pas.c +++ b/drivers/remoteproc/qcom_q6v5_pas.c @@ -224,10 +224,89 @@ static int adsp_load(struct rproc *rproc, const struct firmware *fw) return ret; } +static int adsp_attach(struct rproc *rproc) +{ + struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv; + int i, ret; + + ret = qcom_q6v5_prepare(&adsp->q6v5); + if (ret) + return ret; + + ret = adsp_pds_enable(adsp, adsp->proxy_pds, adsp->proxy_pd_count); + if (ret < 0) + goto disable_irqs; + + ret = clk_prepare_enable(adsp->xo); + if (ret) + goto disable_proxy_pds; + + ret = clk_prepare_enable(adsp->aggre2_clk); + if (ret) + goto disable_xo_clk; + + if (adsp->cx_supply) { + ret = regulator_enable(adsp->cx_supply); + if (ret) + goto disable_aggre2_clk; + } + + if (adsp->px_supply) { + ret = regulator_enable(adsp->px_supply); + if (ret) + goto disable_cx_supply; + } + + /* if needed, signal Q6 to continute booting */ + if (adsp->q6v5.rmb_base) { + for (i = 0; i < RMB_POLL_MAX_TIMES; i++) { + if (readl_relaxed(adsp->q6v5.rmb_base + RMB_BOOT_WAIT_REG)) { + writel_relaxed(1, adsp->q6v5.rmb_base + RMB_BOOT_CONT_REG); + break; + } + msleep(20); + } + + if (!readl_relaxed(adsp->q6v5.rmb_base + RMB_BOOT_WAIT_REG)) { + dev_err(adsp->dev, "Didn't get rmb signal from %s\n", rproc->name); + goto disable_px_supply; + } + } + + ret = qcom_q6v5_wait_for_start(&adsp->q6v5, msecs_to_jiffies(5000)); + if (ret == -ETIMEDOUT) { + dev_err(adsp->dev, "start timed out\n"); + qcom_scm_pas_shutdown(adsp->pas_id); + goto disable_px_supply; + } + + return 0; + +disable_px_supply: + if (adsp->px_supply) + regulator_disable(adsp->px_supply); +disable_cx_supply: + if (adsp->cx_supply) + regulator_disable(adsp->cx_supply); +disable_aggre2_clk: + clk_disable_unprepare(adsp->aggre2_clk); +disable_xo_clk: + clk_disable_unprepare(adsp->xo); +disable_proxy_pds: + adsp_pds_disable(adsp, adsp->proxy_pds, adsp->proxy_pd_count); +disable_irqs: + qcom_q6v5_unprepare(&adsp->q6v5); + + /* Remove pointer to the loaded firmware, only valid in adsp_load() & adsp_start() */ + adsp->firmware = NULL; + + return ret; +} + static int adsp_start(struct rproc *rproc) { struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv; - int ret; + int i, ret; ret = qcom_q6v5_prepare(&adsp->q6v5); if (ret) @@ -286,6 +365,22 @@ static int adsp_start(struct rproc *rproc) goto release_pas_metadata; } + /* if needed, signal Q6 to continute booting */ + if (adsp->q6v5.rmb_base) { + for (i = 0; i < RMB_POLL_MAX_TIMES; i++) { + if (readl_relaxed(adsp->q6v5.rmb_base + RMB_BOOT_WAIT_REG)) { + writel_relaxed(1, adsp->q6v5.rmb_base + RMB_BOOT_CONT_REG); + break; + } + msleep(20); + } + + if (!readl_relaxed(adsp->q6v5.rmb_base + RMB_BOOT_WAIT_REG)) { + dev_err(adsp->dev, "Didn't get rmb signal from %s\n", rproc->name); + goto release_pas_metadata; + } + } + ret = qcom_q6v5_wait_for_start(&adsp->q6v5, msecs_to_jiffies(5000)); if (ret == -ETIMEDOUT) { dev_err(adsp->dev, "start timed out\n"); @@ -395,6 +490,7 @@ static unsigned long adsp_panic(struct rproc *rproc) static const struct rproc_ops adsp_ops = { .unprepare = adsp_unprepare, .start = adsp_start, + .attach = adsp_attach, .stop = adsp_stop, .da_to_va = adsp_da_to_va, .parse_fw = qcom_register_dump_segments, @@ -405,6 +501,7 @@ static const struct rproc_ops adsp_ops = { static const struct rproc_ops adsp_minidump_ops = { .unprepare = adsp_unprepare, .start = adsp_start, + .attach = adsp_attach, .stop = adsp_stop, .da_to_va = adsp_da_to_va, .load = adsp_load, @@ -710,6 +807,10 @@ static int adsp_probe(struct platform_device *pdev) if (ret) goto detach_proxy_pds; + if (adsp->q6v5.rmb_base && + readl_relaxed(adsp->q6v5.rmb_base + RMB_Q6_BOOT_STATUS_REG)) + rproc->state = RPROC_DETACHED; + qcom_add_glink_subdev(rproc, &adsp->glink_subdev, desc->ssr_name); qcom_add_smd_subdev(rproc, &adsp->smd_subdev); adsp->sysmon = qcom_add_sysmon_subdev(rproc, -- 2.25.1