| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20210901121518.152481-2-y.oudjana@protonmail.com>
Date: Wed, 01 Sep 2021 12:15:55 +0000
From: Yassine Oudjana <y.oudjana@...tonmail.com>
To: Andy Gross <agross@...nel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Georgi Djakov <djakov@...nel.org>,
Rob Herring <robh+dt@...nel.org>
Cc: Yassine Oudjana <y.oudjana@...tonmail.com>,
AngeloGioacchino Del Regno <kholk11@...il.com>,
linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v4 1/5] interconnect: qcom: sdm660: Commonize RPM-QoS
SoCs such as MSM8996 also control bus QoS in a similar fashion to SDM660,
with some paths being controlled by RPM and others directly by the AP.
Move relevant functions and defines to a new object so that they can be used
in multiple drivers.
Signed-off-by: Yassine Oudjana <y.oudjana@...tonmail.com>
---
Changes since v3:
- Commonize probe function.
- Don't rename qcom_icc_set in icc-rpmh since it's no longer needed.
Changes since v1:
- Split first patch into 2 patches, one for renaming qcom_icc_set in icc-rpmh, and another
one for the actual commonization.
- Revert unnecessary move of include line in sdm660.c
drivers/interconnect/qcom/Kconfig | 5 +-
drivers/interconnect/qcom/Makefile | 2 +
drivers/interconnect/qcom/icc-rpm-qos.c | 358 +++++++++++++++++
drivers/interconnect/qcom/icc-rpm-qos.h | 135 +++++++
drivers/interconnect/qcom/sdm660.c | 487 ++----------------------
5 files changed, 522 insertions(+), 465 deletions(-)
create mode 100644 drivers/interconnect/qcom/icc-rpm-qos.c
create mode 100644 drivers/interconnect/qcom/icc-rpm-qos.h
diff --git a/drivers/interconnect/qcom/Kconfig b/drivers/interconnect/qcom/Kconfig
index daf1e25f6042..9e4303350afb 100644
--- a/drivers/interconnect/qcom/Kconfig
+++ b/drivers/interconnect/qcom/Kconfig
@@ -96,7 +96,7 @@ config INTERCONNECT_QCOM_SDM660
tristate "Qualcomm SDM660 interconnect driver"
depends on INTERCONNECT_QCOM
depends on QCOM_SMD_RPM
- select INTERCONNECT_QCOM_SMD_RPM
+ select INTERCONNECT_QCOM_SMD_RPM_QOS
help
This is a driver for the Qualcomm Network-on-Chip on sdm660-based
platforms.
@@ -148,3 +148,6 @@ config INTERCONNECT_QCOM_SM8350
config INTERCONNECT_QCOM_SMD_RPM
tristate
+
+config INTERCONNECT_QCOM_SMD_RPM_QOS
+ tristate
diff --git a/drivers/interconnect/qcom/Makefile b/drivers/interconnect/qcom/Makefile
index 69300b1d48ef..03a5a1e9c45e 100644
--- a/drivers/interconnect/qcom/Makefile
+++ b/drivers/interconnect/qcom/Makefile
@@ -17,6 +17,7 @@ qnoc-sm8150-objs := sm8150.o
qnoc-sm8250-objs := sm8250.o
qnoc-sm8350-objs := sm8350.o
icc-smd-rpm-objs := smd-rpm.o icc-rpm.o
+icc-smd-rpm-qos-objs := smd-rpm.o icc-rpm-qos.o
obj-$(CONFIG_INTERCONNECT_QCOM_BCM_VOTER) += icc-bcm-voter.o
obj-$(CONFIG_INTERCONNECT_QCOM_MSM8916) += qnoc-msm8916.o
@@ -35,3 +36,4 @@ obj-$(CONFIG_INTERCONNECT_QCOM_SM8150) += qnoc-sm8150.o
obj-$(CONFIG_INTERCONNECT_QCOM_SM8250) += qnoc-sm8250.o
obj-$(CONFIG_INTERCONNECT_QCOM_SM8350) += qnoc-sm8350.o
obj-$(CONFIG_INTERCONNECT_QCOM_SMD_RPM) += icc-smd-rpm.o
+obj-$(CONFIG_INTERCONNECT_QCOM_SMD_RPM_QOS) += icc-smd-rpm-qos.o
diff --git a/drivers/interconnect/qcom/icc-rpm-qos.c b/drivers/interconnect/qcom/icc-rpm-qos.c
new file mode 100644
index 000000000000..3f0b16caa812
--- /dev/null
+++ b/drivers/interconnect/qcom/icc-rpm-qos.c
@@ -0,0 +1,358 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020, AngeloGioacchino Del Regno <kholk11@...il.com>
+ */
+
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/interconnect-provider.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#include "smd-rpm.h"
+#include "icc-rpm-qos.h"
+
+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 != -1)
+ 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_MASK, val);
+ if (rc)
+ return rc;
+
+ val = qos->prio_level << NOC_QOS_PRIORITY_P0_SHIFT;
+ return regmap_update_bits(rmap, NOC_QOS_PRIORITYn_ADDR(qos->qos_port),
+ NOC_QOS_PRIORITY_MASK, val);
+}
+
+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 != -1)
+ 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_rpm_qos_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 != -1) {
+ /* 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;
+}
+
+int qcom_icc_rpm_qos_probe(struct platform_device *pdev, size_t cd_size, int cd_num,
+ const struct clk_bulk_data *cd, bool is_bimc)
+{
+ 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;
+
+ qp->bus_clks = devm_kmemdup(dev, cd, cd_size, GFP_KERNEL);
+ if (!qp->bus_clks)
+ return -ENOMEM;
+
+ qp->num_clks = cd_num;
+
+ qp->is_bimc_node = is_bimc;
+
+ 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_rpm_qos_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;
+}
+EXPORT_SYMBOL_GPL(qcom_icc_rpm_qos_probe);
+
+int qcom_icc_rpm_qos_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);
+}
+EXPORT_SYMBOL_GPL(qcom_icc_rpm_qos_remove);
diff --git a/drivers/interconnect/qcom/icc-rpm-qos.h b/drivers/interconnect/qcom/icc-rpm-qos.h
new file mode 100644
index 000000000000..a20d3ccc7df0
--- /dev/null
+++ b/drivers/interconnect/qcom/icc-rpm-qos.h
@@ -0,0 +1,135 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020, AngeloGioacchino Del Regno <kholk11@...il.com>
+ */
+
+#ifndef __DRIVERS_INTERCONNECT_QCOM_ICC_RPM_QOS_H__
+#define __DRIVERS_INTERCONNECT_QCOM_ICC_RPM_QOS_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_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_MASK 0xf
+#define NOC_QOS_PRIORITY_P1_SHIFT 0x2
+#define NOC_QOS_PRIORITY_P0_SHIFT 0x3
+
+#define NOC_QOS_MODEn_ADDR(n) (0xc + (n * 0x1000))
+#define NOC_QOS_MODEn_MASK 0x3
+
+#define to_qcom_provider(_provider) \
+ container_of(_provider, struct qcom_icc_provider, provider)
+
+/**
+ * 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
+ */
+
+#define MAX_LINKS 38
+
+struct qcom_icc_node {
+ unsigned char *name;
+ u16 id;
+ u16 links[MAX_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;
+};
+
+#define DEFINE_QNODE(_name, _id, _buswidth, _mas_rpm_id, _slv_rpm_id, \
+ _ap_owned, _qos_mode, _qos_prio, _qos_port, ...) \
+ static struct qcom_icc_node _name = { \
+ .name = #_name, \
+ .id = _id, \
+ .buswidth = _buswidth, \
+ .mas_rpm_id = _mas_rpm_id, \
+ .slv_rpm_id = _slv_rpm_id, \
+ .qos.ap_owned = _ap_owned, \
+ .qos.qos_mode = _qos_mode, \
+ .qos.areq_prio = _qos_prio, \
+ .qos.prio_level = _qos_prio, \
+ .qos.qos_port = _qos_port, \
+ .num_links = ARRAY_SIZE(((int[]){ __VA_ARGS__ })), \
+ .links = { __VA_ARGS__ }, \
+ }
+
+int qcom_icc_rpm_qos_probe(struct platform_device *pdev, size_t cd_size, int cd_num,
+ const struct clk_bulk_data *cd, bool is_bimc);
+int qcom_icc_rpm_qos_remove(struct platform_device *pdev);
+
+#endif
diff --git a/drivers/interconnect/qcom/sdm660.c b/drivers/interconnect/qcom/sdm660.c
index 632dbdd21915..2fd587e32d04 100644
--- a/drivers/interconnect/qcom/sdm660.c
+++ b/drivers/interconnect/qcom/sdm660.c
@@ -4,7 +4,6 @@
* Copyright (C) 2020, AngeloGioacchino Del Regno <kholk11@...il.com>
*/
-#include <dt-bindings/interconnect/qcom,sdm660.h>
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/interconnect-provider.h>
@@ -14,42 +13,11 @@
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
-#include <linux/slab.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_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_MASK 0xf
-#define NOC_QOS_PRIORITY_P1_SHIFT 0x2
-#define NOC_QOS_PRIORITY_P0_SHIFT 0x3
+#include <dt-bindings/interconnect/qcom,sdm660.h>
-#define NOC_QOS_MODEn_ADDR(n) (0xc + (n * 0x1000))
-#define NOC_QOS_MODEn_MASK 0x3
+#include "icc-rpm-qos.h"
+#include "smd-rpm.h"
enum {
SDM660_MASTER_IPA = 1,
@@ -159,105 +127,17 @@ enum {
SDM660_SNOC,
};
-#define to_qcom_provider(_provider) \
- container_of(_provider, struct qcom_icc_provider, provider)
-
-static const struct clk_bulk_data bus_clocks[] = {
+const struct clk_bulk_data bus_clocks[] = {
{ .id = "bus" },
{ .id = "bus_a" },
};
-static const struct clk_bulk_data bus_mm_clocks[] = {
+const struct clk_bulk_data bus_mm_clocks[] = {
{ .id = "bus" },
{ .id = "bus_a" },
{ .id = "iface" },
};
-/**
- * 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;
-};
-
-#define SDM660_MAX_LINKS 34
-
-/**
- * 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;
- u16 links[SDM660_MAX_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;
-};
-
-#define DEFINE_QNODE(_name, _id, _buswidth, _mas_rpm_id, _slv_rpm_id, \
- _ap_owned, _qos_mode, _qos_prio, _qos_port, ...) \
- static struct qcom_icc_node _name = { \
- .name = #_name, \
- .id = _id, \
- .buswidth = _buswidth, \
- .mas_rpm_id = _mas_rpm_id, \
- .slv_rpm_id = _slv_rpm_id, \
- .qos.ap_owned = _ap_owned, \
- .qos.qos_mode = _qos_mode, \
- .qos.areq_prio = _qos_prio, \
- .qos.prio_level = _qos_prio, \
- .qos.qos_port = _qos_port, \
- .num_links = ARRAY_SIZE(((int[]){ __VA_ARGS__ })), \
- .links = { __VA_ARGS__ }, \
- }
-
DEFINE_QNODE(mas_ipa, SDM660_MASTER_IPA, 8, 59, -1, true, NOC_QOS_MODE_FIXED, 1, 3, SDM660_SLAVE_A2NOC_SNOC);
DEFINE_QNODE(mas_cnoc_a2noc, SDM660_MASTER_CNOC_A2NOC, 8, 146, -1, true, -1, 0, -1, SDM660_SLAVE_A2NOC_SNOC);
DEFINE_QNODE(mas_sdcc_1, SDM660_MASTER_SDCC_1, 8, 33, -1, false, -1, 0, -1, SDM660_SLAVE_A2NOC_SNOC);
@@ -555,348 +435,27 @@ 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)
+static int sdm660_qnoc_probe(struct platform_device *pdev)
{
- 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 != -1)
- 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_MASK, val);
- if (rc)
- return rc;
-
- val = qos->prio_level << NOC_QOS_PRIORITY_P0_SHIFT;
- return regmap_update_bits(rmap, NOC_QOS_PRIORITYn_ADDR(qos->qos_port),
- NOC_QOS_PRIORITY_MASK, val);
-}
-
-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 != -1)
- 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 != -1) {
- /* 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);
+ const struct clk_bulk_data *cd;
+ size_t cd_size;
+ int cd_num;
+ bool is_bimc = false;
+
+ if (of_device_is_compatible(pdev->dev.of_node, "qcom,sdm660-mnoc")) {
+ cd = bus_mm_clocks;
+ cd_size = sizeof(bus_mm_clocks);
+ cd_num = ARRAY_SIZE(bus_mm_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);
- }
+ if (of_device_is_compatible(pdev->dev.of_node, "qcom,sdm660-bimc"))
+ is_bimc = true;
- 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;
+ cd = bus_clocks;
+ cd_size = sizeof(bus_clocks);
+ cd_num = ARRAY_SIZE(bus_clocks);
}
- 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);
+ return qcom_icc_rpm_qos_probe(pdev, cd_size, cd_num, cd, is_bimc);
}
static const struct of_device_id sdm660_noc_of_match[] = {
@@ -911,8 +470,8 @@ static const struct of_device_id sdm660_noc_of_match[] = {
MODULE_DEVICE_TABLE(of, sdm660_noc_of_match);
static struct platform_driver sdm660_noc_driver = {
- .probe = qnoc_probe,
- .remove = qnoc_remove,
+ .probe = sdm660_qnoc_probe,
+ .remove = qcom_icc_rpm_qos_remove,
.driver = {
.name = "qnoc-sdm660",
.of_match_table = sdm660_noc_of_match,
--
2.33.0
Powered by blists - more mailing lists