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Thu, 21 Nov 2024 11:30:42 GMT Received: from 41ee23f3c785.qualcomm.com (10.80.80.8) 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 15.2.1544.9; Thu, 21 Nov 2024 03:30:37 -0800 From: Raviteja Laggyshetty To: Georgi Djakov , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio CC: Odelu Kukatla , Mike Tipton , Sibi Sankar , , , , Subject: [PATCH V5 3/4] interconnect: qcom: Add EPSS L3 support on SA8775P Date: Thu, 21 Nov 2024 11:30:05 +0000 Message-ID: <20241121113006.28520-4-quic_rlaggysh@quicinc.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20241121113006.28520-1-quic_rlaggysh@quicinc.com> References: <20241121113006.28520-1-quic_rlaggysh@quicinc.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) 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-ORIG-GUID: KGXUE29HVTNfNJ5fDbJjm-xpLWUSS5kb X-Proofpoint-GUID: KGXUE29HVTNfNJ5fDbJjm-xpLWUSS5kb 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 mlxscore=0 spamscore=0 mlxlogscore=999 clxscore=1015 suspectscore=0 adultscore=0 priorityscore=1501 phishscore=0 impostorscore=0 bulkscore=0 lowpriorityscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2411210090 Add Epoch Subsystem (EPSS) L3 interconnect provider on SA8775P SoCs with multiple device support. Signed-off-by: Raviteja Laggyshetty --- drivers/interconnect/qcom/osm-l3.c | 85 ++++++++++++++++++++++-------- 1 file changed, 63 insertions(+), 22 deletions(-) diff --git a/drivers/interconnect/qcom/osm-l3.c b/drivers/interconnect/qcom/osm-l3.c index 6a656ed44d49..a9405b7d251b 100644 --- a/drivers/interconnect/qcom/osm-l3.c +++ b/drivers/interconnect/qcom/osm-l3.c @@ -1,16 +1,19 @@ // SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2020-2021, The Linux Foundation. All rights reserved. + * Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved. */ #include #include #include +#include #include #include #include #include #include +#include #include #include @@ -34,9 +37,14 @@ #define OSM_L3_MAX_LINKS 1 +#define OSM_L3_NODE_ID_START 10000 +#define OSM_NODE_NAME_SUFFIX_SIZE 10 + #define to_osm_l3_provider(_provider) \ container_of(_provider, struct qcom_osm_l3_icc_provider, provider) +static DEFINE_IDA(osm_l3_id); + struct qcom_osm_l3_icc_provider { void __iomem *base; unsigned int max_state; @@ -55,46 +63,40 @@ struct qcom_osm_l3_icc_provider { */ struct qcom_osm_l3_node { const char *name; - u16 links[OSM_L3_MAX_LINKS]; + const char *links[OSM_L3_MAX_LINKS]; u16 id; u16 num_links; u16 buswidth; }; struct qcom_osm_l3_desc { - const struct qcom_osm_l3_node * const *nodes; + struct qcom_osm_l3_node * const *nodes; size_t num_nodes; unsigned int lut_row_size; unsigned int reg_freq_lut; unsigned int reg_perf_state; }; -enum { - OSM_L3_MASTER_NODE = 10000, - OSM_L3_SLAVE_NODE, -}; - -#define DEFINE_QNODE(_name, _id, _buswidth, ...) \ - static const struct qcom_osm_l3_node _name = { \ +#define DEFINE_QNODE(_name, _buswidth, ...) \ + static struct qcom_osm_l3_node _name = { \ .name = #_name, \ - .id = _id, \ .buswidth = _buswidth, \ .num_links = COUNT_ARGS(__VA_ARGS__), \ - .links = { __VA_ARGS__ }, \ + __VA_OPT__(.links = { #__VA_ARGS__ }) \ } -DEFINE_QNODE(osm_l3_master, OSM_L3_MASTER_NODE, 16, OSM_L3_SLAVE_NODE); -DEFINE_QNODE(osm_l3_slave, OSM_L3_SLAVE_NODE, 16); +DEFINE_QNODE(osm_l3_master, 16, osm_l3_slave); +DEFINE_QNODE(osm_l3_slave, 16); -static const struct qcom_osm_l3_node * const osm_l3_nodes[] = { +static struct qcom_osm_l3_node * const osm_l3_nodes[] = { [MASTER_OSM_L3_APPS] = &osm_l3_master, [SLAVE_OSM_L3] = &osm_l3_slave, }; -DEFINE_QNODE(epss_l3_master, OSM_L3_MASTER_NODE, 32, OSM_L3_SLAVE_NODE); -DEFINE_QNODE(epss_l3_slave, OSM_L3_SLAVE_NODE, 32); +DEFINE_QNODE(epss_l3_master, 32, epss_l3_slave); +DEFINE_QNODE(epss_l3_slave, 32); -static const struct qcom_osm_l3_node * const epss_l3_nodes[] = { +static struct qcom_osm_l3_node * const epss_l3_nodes[] = { [MASTER_EPSS_L3_APPS] = &epss_l3_master, [SLAVE_EPSS_L3_SHARED] = &epss_l3_slave, }; @@ -123,6 +125,19 @@ static const struct qcom_osm_l3_desc epss_l3_l3_vote = { .reg_perf_state = EPSS_REG_L3_VOTE, }; +static u16 get_node_id_by_name(const char *node_name, + const struct qcom_osm_l3_desc *desc) +{ + struct qcom_osm_l3_node *const *nodes = desc->nodes; + int i; + + for (i = 0; i < desc->num_nodes; i++) { + if (!strcmp(nodes[i]->name, node_name)) + return nodes[i]->id; + } + return 0; +} + static int qcom_osm_l3_set(struct icc_node *src, struct icc_node *dst) { struct qcom_osm_l3_icc_provider *qp; @@ -164,10 +179,11 @@ static int qcom_osm_l3_probe(struct platform_device *pdev) const struct qcom_osm_l3_desc *desc; struct icc_onecell_data *data; struct icc_provider *provider; - const struct qcom_osm_l3_node * const *qnodes; + struct qcom_osm_l3_node * const *qnodes; struct icc_node *node; size_t num_nodes; struct clk *clk; + u64 addr; int ret; clk = clk_get(&pdev->dev, "xo"); @@ -188,6 +204,10 @@ static int qcom_osm_l3_probe(struct platform_device *pdev) if (!qp) return -ENOMEM; + ret = of_property_read_reg(pdev->dev.of_node, 0, &addr, NULL); + if (ret) + return ret; + qp->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(qp->base)) return PTR_ERR(qp->base); @@ -242,8 +262,13 @@ static int qcom_osm_l3_probe(struct platform_device *pdev) icc_provider_init(provider); + /* Allocate unique id for qnodes */ + for (i = 0; i < num_nodes; i++) + qnodes[i]->id = ida_alloc_min(&osm_l3_id, OSM_L3_NODE_ID_START, GFP_KERNEL); + for (i = 0; i < num_nodes; i++) { - size_t j; + char *node_name; + size_t j, len; node = icc_node_create(qnodes[i]->id); if (IS_ERR(node)) { @@ -251,13 +276,29 @@ static int qcom_osm_l3_probe(struct platform_device *pdev) goto err; } - node->name = qnodes[i]->name; + /* len = strlen(node->name) + @ + 8 (base-address) + NULL */ + len = strlen(qnodes[i]->name) + OSM_NODE_NAME_SUFFIX_SIZE; + node_name = devm_kzalloc(&pdev->dev, len, GFP_KERNEL); + if (!node_name) { + ret = -ENOMEM; + goto err; + } + + snprintf(node_name, len, "%s@%08llx", qnodes[i]->name, addr); + node->name = node_name; + /* Cast away const and add it back in qcom_osm_l3_set() */ node->data = (void *)qnodes[i]; icc_node_add(node, provider); - for (j = 0; j < qnodes[i]->num_links; j++) - icc_link_create(node, qnodes[i]->links[j]); + for (j = 0; j < qnodes[i]->num_links; j++) { + u16 link_node_id = get_node_id_by_name(qnodes[i]->links[j], desc); + + if (link_node_id) + icc_link_create(node, link_node_id); + else + goto err; + } data->nodes[i] = node; }