diff options
author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2021-09-04 02:24:14 +0300 |
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committer | Georgi Djakov <djakov@kernel.org> | 2021-10-04 14:13:57 +0300 |
commit | 2b6c7d645118cba7719f16f3b0e4d4a555776f48 (patch) | |
tree | e3bb86264affbf126e1b5a6d192aff9bfa1ad4b2 /drivers/interconnect/qcom/sdm660.c | |
parent | 656ba110e164e1aab2aa4bec9baac51008c5d12c (diff) | |
download | linux-2b6c7d645118cba7719f16f3b0e4d4a555776f48.tar.xz |
interconnect: sdm660: merge common code into icc-rpm
Other RPM interconnect drivers might also use QoS support. Move AP-owned
nodes support from SDM660 driver to common icc-rpm.c.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Tested-by: Marijn Suijten <marijn.suijten@somainline.org>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Link: https://lore.kernel.org/r/20210903232421.1384199-5-dmitry.baryshkov@linaro.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
Diffstat (limited to 'drivers/interconnect/qcom/sdm660.c')
-rw-r--r-- | drivers/interconnect/qcom/sdm660.c | 485 |
1 files changed, 18 insertions, 467 deletions
diff --git a/drivers/interconnect/qcom/sdm660.c b/drivers/interconnect/qcom/sdm660.c index 4a72f9677d4e..471bb88f8828 100644 --- a/drivers/interconnect/qcom/sdm660.c +++ b/drivers/interconnect/qcom/sdm660.c @@ -16,42 +16,9 @@ #include <linux/regmap.h> #include <linux/slab.h> +#include "icc-rpm.h" #include "smd-rpm.h" -#define RPM_BUS_MASTER_REQ 0x73616d62 -#define RPM_BUS_SLAVE_REQ 0x766c7362 - -/* BIMC QoS */ -#define M_BKE_REG_BASE(n) (0x300 + (0x4000 * n)) -#define M_BKE_EN_ADDR(n) (M_BKE_REG_BASE(n)) -#define M_BKE_HEALTH_CFG_ADDR(i, n) (M_BKE_REG_BASE(n) + 0x40 + (0x4 * i)) - -#define M_BKE_HEALTH_CFG_LIMITCMDS_MASK 0x80000000 -#define M_BKE_HEALTH_CFG_AREQPRIO_MASK 0x300 -#define M_BKE_HEALTH_CFG_PRIOLVL_MASK 0x3 -#define M_BKE_HEALTH_CFG_AREQPRIO_SHIFT 0x8 -#define M_BKE_HEALTH_CFG_LIMITCMDS_SHIFT 0x1f - -#define M_BKE_EN_EN_BMASK 0x1 - -/* Valid for both NoC and BIMC */ -#define NOC_QOS_MODE_INVALID -1 -#define NOC_QOS_MODE_FIXED 0x0 -#define NOC_QOS_MODE_LIMITER 0x1 -#define NOC_QOS_MODE_BYPASS 0x2 - -/* NoC QoS */ -#define NOC_PERM_MODE_FIXED 1 -#define NOC_PERM_MODE_BYPASS (1 << NOC_QOS_MODE_BYPASS) - -#define NOC_QOS_PRIORITYn_ADDR(n) (0x8 + (n * 0x1000)) -#define NOC_QOS_PRIORITY_P1_MASK 0xc -#define NOC_QOS_PRIORITY_P0_MASK 0x3 -#define NOC_QOS_PRIORITY_P1_SHIFT 0x2 - -#define NOC_QOS_MODEn_ADDR(n) (0xc + (n * 0x1000)) -#define NOC_QOS_MODEn_MASK 0x3 - enum { SDM660_MASTER_IPA = 1, SDM660_MASTER_CNOC_A2NOC, @@ -160,94 +127,20 @@ enum { SDM660_SNOC, }; -#define to_qcom_provider(_provider) \ - container_of(_provider, struct qcom_icc_provider, provider) - -static const struct clk_bulk_data bus_clocks[] = { - { .id = "bus" }, - { .id = "bus_a" }, +static const char * const bus_mm_clocks[] = { + "bus", + "bus_a", + "iface", }; -static const struct clk_bulk_data bus_mm_clocks[] = { - { .id = "bus" }, - { .id = "bus_a" }, - { .id = "iface" }, -}; - -static const struct clk_bulk_data bus_a2noc_clocks[] = { - { .id = "bus" }, - { .id = "bus_a" }, - { .id = "ipa" }, - { .id = "ufs_axi" }, - { .id = "aggre2_ufs_axi" }, - { .id = "aggre2_usb3_axi" }, - { .id = "cfg_noc_usb2_axi" }, -}; - -/** - * struct qcom_icc_provider - Qualcomm specific interconnect provider - * @provider: generic interconnect provider - * @bus_clks: the clk_bulk_data table of bus clocks - * @num_clks: the total number of clk_bulk_data entries - * @is_bimc_node: indicates whether to use bimc specific setting - * @regmap: regmap for QoS registers read/write access - * @mmio: NoC base iospace - */ -struct qcom_icc_provider { - struct icc_provider provider; - struct clk_bulk_data *bus_clks; - int num_clks; - bool is_bimc_node; - struct regmap *regmap; - void __iomem *mmio; -}; - -/** - * struct qcom_icc_qos - Qualcomm specific interconnect QoS parameters - * @areq_prio: node requests priority - * @prio_level: priority level for bus communication - * @limit_commands: activate/deactivate limiter mode during runtime - * @ap_owned: indicates if the node is owned by the AP or by the RPM - * @qos_mode: default qos mode for this node - * @qos_port: qos port number for finding qos registers of this node - */ -struct qcom_icc_qos { - u32 areq_prio; - u32 prio_level; - bool limit_commands; - bool ap_owned; - int qos_mode; - int qos_port; -}; - -/** - * struct qcom_icc_node - Qualcomm specific interconnect nodes - * @name: the node name used in debugfs - * @id: a unique node identifier - * @links: an array of nodes where we can go next while traversing - * @num_links: the total number of @links - * @buswidth: width of the interconnect between a node and the bus (bytes) - * @mas_rpm_id: RPM id for devices that are bus masters - * @slv_rpm_id: RPM id for devices that are bus slaves - * @qos: NoC QoS setting parameters - * @rate: current bus clock rate in Hz - */ -struct qcom_icc_node { - unsigned char *name; - u16 id; - const u16 *links; - u16 num_links; - u16 buswidth; - int mas_rpm_id; - int slv_rpm_id; - struct qcom_icc_qos qos; - u64 rate; -}; - -struct qcom_icc_desc { - struct qcom_icc_node **nodes; - size_t num_nodes; - const struct regmap_config *regmap_cfg; +static const char * const bus_a2noc_clocks[] = { + "bus", + "bus_a", + "ipa", + "ufs_axi", + "aggre2_ufs_axi", + "aggre2_usb3_axi", + "cfg_noc_usb2_axi", }; static const u16 mas_ipa_links[] = { @@ -1622,6 +1515,8 @@ static const struct regmap_config sdm660_a2noc_regmap_config = { static struct qcom_icc_desc sdm660_a2noc = { .nodes = sdm660_a2noc_nodes, .num_nodes = ARRAY_SIZE(sdm660_a2noc_nodes), + .clocks = bus_a2noc_clocks, + .num_clocks = ARRAY_SIZE(bus_a2noc_clocks), .regmap_cfg = &sdm660_a2noc_regmap_config, }; @@ -1647,6 +1542,7 @@ static const struct regmap_config sdm660_bimc_regmap_config = { static struct qcom_icc_desc sdm660_bimc = { .nodes = sdm660_bimc_nodes, .num_nodes = ARRAY_SIZE(sdm660_bimc_nodes), + .is_bimc_node = true, .regmap_cfg = &sdm660_bimc_regmap_config, }; @@ -1759,6 +1655,8 @@ static const struct regmap_config sdm660_mnoc_regmap_config = { static struct qcom_icc_desc sdm660_mnoc = { .nodes = sdm660_mnoc_nodes, .num_nodes = ARRAY_SIZE(sdm660_mnoc_nodes), + .clocks = bus_mm_clocks, + .num_clocks = ARRAY_SIZE(bus_mm_clocks), .regmap_cfg = &sdm660_mnoc_regmap_config, }; @@ -1796,353 +1694,6 @@ static struct qcom_icc_desc sdm660_snoc = { .regmap_cfg = &sdm660_snoc_regmap_config, }; -static int qcom_icc_bimc_set_qos_health(struct regmap *rmap, - struct qcom_icc_qos *qos, - int regnum) -{ - u32 val; - u32 mask; - - val = qos->prio_level; - mask = M_BKE_HEALTH_CFG_PRIOLVL_MASK; - - val |= qos->areq_prio << M_BKE_HEALTH_CFG_AREQPRIO_SHIFT; - mask |= M_BKE_HEALTH_CFG_AREQPRIO_MASK; - - /* LIMITCMDS is not present on M_BKE_HEALTH_3 */ - if (regnum != 3) { - val |= qos->limit_commands << M_BKE_HEALTH_CFG_LIMITCMDS_SHIFT; - mask |= M_BKE_HEALTH_CFG_LIMITCMDS_MASK; - } - - return regmap_update_bits(rmap, - M_BKE_HEALTH_CFG_ADDR(regnum, qos->qos_port), - mask, val); -} - -static int qcom_icc_set_bimc_qos(struct icc_node *src, u64 max_bw, - bool bypass_mode) -{ - struct qcom_icc_provider *qp; - struct qcom_icc_node *qn; - struct icc_provider *provider; - u32 mode = NOC_QOS_MODE_BYPASS; - u32 val = 0; - int i, rc = 0; - - qn = src->data; - provider = src->provider; - qp = to_qcom_provider(provider); - - if (qn->qos.qos_mode != NOC_QOS_MODE_INVALID) - mode = qn->qos.qos_mode; - - /* QoS Priority: The QoS Health parameters are getting considered - * only if we are NOT in Bypass Mode. - */ - if (mode != NOC_QOS_MODE_BYPASS) { - for (i = 3; i >= 0; i--) { - rc = qcom_icc_bimc_set_qos_health(qp->regmap, - &qn->qos, i); - if (rc) - return rc; - } - - /* Set BKE_EN to 1 when Fixed, Regulator or Limiter Mode */ - val = 1; - } - - return regmap_update_bits(qp->regmap, M_BKE_EN_ADDR(qn->qos.qos_port), - M_BKE_EN_EN_BMASK, val); -} - -static int qcom_icc_noc_set_qos_priority(struct regmap *rmap, - struct qcom_icc_qos *qos) -{ - u32 val; - int rc; - - /* Must be updated one at a time, P1 first, P0 last */ - val = qos->areq_prio << NOC_QOS_PRIORITY_P1_SHIFT; - rc = regmap_update_bits(rmap, NOC_QOS_PRIORITYn_ADDR(qos->qos_port), - NOC_QOS_PRIORITY_P1_MASK, val); - if (rc) - return rc; - - return regmap_update_bits(rmap, NOC_QOS_PRIORITYn_ADDR(qos->qos_port), - NOC_QOS_PRIORITY_P0_MASK, qos->prio_level); -} - -static int qcom_icc_set_noc_qos(struct icc_node *src, u64 max_bw) -{ - struct qcom_icc_provider *qp; - struct qcom_icc_node *qn; - struct icc_provider *provider; - u32 mode = NOC_QOS_MODE_BYPASS; - int rc = 0; - - qn = src->data; - provider = src->provider; - qp = to_qcom_provider(provider); - - if (qn->qos.qos_port < 0) { - dev_dbg(src->provider->dev, - "NoC QoS: Skipping %s: vote aggregated on parent.\n", - qn->name); - return 0; - } - - if (qn->qos.qos_mode != NOC_QOS_MODE_INVALID) - mode = qn->qos.qos_mode; - - if (mode == NOC_QOS_MODE_FIXED) { - dev_dbg(src->provider->dev, "NoC QoS: %s: Set Fixed mode\n", - qn->name); - rc = qcom_icc_noc_set_qos_priority(qp->regmap, &qn->qos); - if (rc) - return rc; - } else if (mode == NOC_QOS_MODE_BYPASS) { - dev_dbg(src->provider->dev, "NoC QoS: %s: Set Bypass mode\n", - qn->name); - } - - return regmap_update_bits(qp->regmap, - NOC_QOS_MODEn_ADDR(qn->qos.qos_port), - NOC_QOS_MODEn_MASK, mode); -} - -static int qcom_icc_qos_set(struct icc_node *node, u64 sum_bw) -{ - struct qcom_icc_provider *qp = to_qcom_provider(node->provider); - struct qcom_icc_node *qn = node->data; - - dev_dbg(node->provider->dev, "Setting QoS for %s\n", qn->name); - - if (qp->is_bimc_node) - return qcom_icc_set_bimc_qos(node, sum_bw, - (qn->qos.qos_mode == NOC_QOS_MODE_BYPASS)); - - return qcom_icc_set_noc_qos(node, sum_bw); -} - -static int qcom_icc_rpm_set(int mas_rpm_id, int slv_rpm_id, u64 sum_bw) -{ - int ret = 0; - - if (mas_rpm_id != -1) { - ret = qcom_icc_rpm_smd_send(QCOM_SMD_RPM_ACTIVE_STATE, - RPM_BUS_MASTER_REQ, - mas_rpm_id, - sum_bw); - if (ret) { - pr_err("qcom_icc_rpm_smd_send mas %d error %d\n", - mas_rpm_id, ret); - return ret; - } - } - - if (slv_rpm_id != -1) { - ret = qcom_icc_rpm_smd_send(QCOM_SMD_RPM_ACTIVE_STATE, - RPM_BUS_SLAVE_REQ, - slv_rpm_id, - sum_bw); - if (ret) { - pr_err("qcom_icc_rpm_smd_send slv %d error %d\n", - slv_rpm_id, ret); - return ret; - } - } - - return ret; -} - -static int qcom_icc_set(struct icc_node *src, struct icc_node *dst) -{ - struct qcom_icc_provider *qp; - struct qcom_icc_node *qn; - struct icc_provider *provider; - struct icc_node *n; - u64 sum_bw; - u64 max_peak_bw; - u64 rate; - u32 agg_avg = 0; - u32 agg_peak = 0; - int ret, i; - - qn = src->data; - provider = src->provider; - qp = to_qcom_provider(provider); - - list_for_each_entry(n, &provider->nodes, node_list) - provider->aggregate(n, 0, n->avg_bw, n->peak_bw, - &agg_avg, &agg_peak); - - sum_bw = icc_units_to_bps(agg_avg); - max_peak_bw = icc_units_to_bps(agg_peak); - - if (!qn->qos.ap_owned) { - /* send bandwidth request message to the RPM processor */ - ret = qcom_icc_rpm_set(qn->mas_rpm_id, qn->slv_rpm_id, sum_bw); - if (ret) - return ret; - } else if (qn->qos.qos_mode != NOC_QOS_MODE_INVALID) { - /* set bandwidth directly from the AP */ - ret = qcom_icc_qos_set(src, sum_bw); - if (ret) - return ret; - } - - rate = max(sum_bw, max_peak_bw); - - do_div(rate, qn->buswidth); - - if (qn->rate == rate) - return 0; - - for (i = 0; i < qp->num_clks; i++) { - ret = clk_set_rate(qp->bus_clks[i].clk, rate); - if (ret) { - pr_err("%s clk_set_rate error: %d\n", - qp->bus_clks[i].id, ret); - return ret; - } - } - - qn->rate = rate; - - return 0; -} - -static int qnoc_probe(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - const struct qcom_icc_desc *desc; - struct icc_onecell_data *data; - struct icc_provider *provider; - struct qcom_icc_node **qnodes; - struct qcom_icc_provider *qp; - struct icc_node *node; - struct resource *res; - size_t num_nodes, i; - int ret; - - /* wait for the RPM proxy */ - if (!qcom_icc_rpm_smd_available()) - return -EPROBE_DEFER; - - desc = of_device_get_match_data(dev); - if (!desc) - return -EINVAL; - - qnodes = desc->nodes; - num_nodes = desc->num_nodes; - - qp = devm_kzalloc(dev, sizeof(*qp), GFP_KERNEL); - if (!qp) - return -ENOMEM; - - data = devm_kzalloc(dev, struct_size(data, nodes, num_nodes), - GFP_KERNEL); - if (!data) - return -ENOMEM; - - if (of_device_is_compatible(dev->of_node, "qcom,sdm660-mnoc")) { - qp->bus_clks = devm_kmemdup(dev, bus_mm_clocks, - sizeof(bus_mm_clocks), GFP_KERNEL); - qp->num_clks = ARRAY_SIZE(bus_mm_clocks); - } else if (of_device_is_compatible(dev->of_node, "qcom,sdm660-a2noc")) { - qp->bus_clks = devm_kmemdup(dev, bus_a2noc_clocks, - sizeof(bus_a2noc_clocks), GFP_KERNEL); - qp->num_clks = ARRAY_SIZE(bus_a2noc_clocks); - } else { - if (of_device_is_compatible(dev->of_node, "qcom,sdm660-bimc")) - qp->is_bimc_node = true; - - qp->bus_clks = devm_kmemdup(dev, bus_clocks, sizeof(bus_clocks), - GFP_KERNEL); - qp->num_clks = ARRAY_SIZE(bus_clocks); - } - if (!qp->bus_clks) - return -ENOMEM; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) - return -ENODEV; - - qp->mmio = devm_ioremap_resource(dev, res); - if (IS_ERR(qp->mmio)) { - dev_err(dev, "Cannot ioremap interconnect bus resource\n"); - return PTR_ERR(qp->mmio); - } - - qp->regmap = devm_regmap_init_mmio(dev, qp->mmio, desc->regmap_cfg); - if (IS_ERR(qp->regmap)) { - dev_err(dev, "Cannot regmap interconnect bus resource\n"); - return PTR_ERR(qp->regmap); - } - - ret = devm_clk_bulk_get(dev, qp->num_clks, qp->bus_clks); - if (ret) - return ret; - - ret = clk_bulk_prepare_enable(qp->num_clks, qp->bus_clks); - if (ret) - return ret; - - provider = &qp->provider; - INIT_LIST_HEAD(&provider->nodes); - provider->dev = dev; - provider->set = qcom_icc_set; - provider->aggregate = icc_std_aggregate; - provider->xlate = of_icc_xlate_onecell; - provider->data = data; - - ret = icc_provider_add(provider); - if (ret) { - dev_err(dev, "error adding interconnect provider: %d\n", ret); - clk_bulk_disable_unprepare(qp->num_clks, qp->bus_clks); - return ret; - } - - for (i = 0; i < num_nodes; i++) { - size_t j; - - node = icc_node_create(qnodes[i]->id); - if (IS_ERR(node)) { - ret = PTR_ERR(node); - goto err; - } - - node->name = qnodes[i]->name; - node->data = qnodes[i]; - icc_node_add(node, provider); - - for (j = 0; j < qnodes[i]->num_links; j++) - icc_link_create(node, qnodes[i]->links[j]); - - data->nodes[i] = node; - } - data->num_nodes = num_nodes; - platform_set_drvdata(pdev, qp); - - return 0; -err: - icc_nodes_remove(provider); - clk_bulk_disable_unprepare(qp->num_clks, qp->bus_clks); - icc_provider_del(provider); - - return ret; -} - -static int qnoc_remove(struct platform_device *pdev) -{ - struct qcom_icc_provider *qp = platform_get_drvdata(pdev); - - icc_nodes_remove(&qp->provider); - clk_bulk_disable_unprepare(qp->num_clks, qp->bus_clks); - return icc_provider_del(&qp->provider); -} - static const struct of_device_id sdm660_noc_of_match[] = { { .compatible = "qcom,sdm660-a2noc", .data = &sdm660_a2noc }, { .compatible = "qcom,sdm660-bimc", .data = &sdm660_bimc }, |