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Date: Tue, 20 Dec 2022 21:32:34 +0530
From: Sumit Gupta <sumitg@...dia.com>
To: <treding@...dia.com>, <krzysztof.kozlowski@...aro.org>,
<dmitry.osipenko@...labora.com>, <viresh.kumar@...aro.org>,
<rafael@...nel.org>, <jonathanh@...dia.com>, <robh+dt@...nel.org>,
<linux-kernel@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
<linux-pm@...r.kernel.org>, <devicetree@...r.kernel.org>
CC: <sanjayc@...dia.com>, <ksitaraman@...dia.com>, <ishah@...dia.com>,
<bbasu@...dia.com>, <sumitg@...dia.com>
Subject: [Patch v1 04/10] memory: tegra: add support for software mc clients in Tegra234
Adding support for dummy memory controller clients for use by
software.
---
drivers/memory/tegra/mc.c | 65 +++++++++++++++++++++++----------
drivers/memory/tegra/tegra234.c | 21 +++++++++++
include/soc/tegra/mc.h | 3 ++
include/soc/tegra/tegra-icc.h | 7 ++++
4 files changed, 76 insertions(+), 20 deletions(-)
diff --git a/drivers/memory/tegra/mc.c b/drivers/memory/tegra/mc.c
index ff887fb03bce..4ddf9808fe6b 100644
--- a/drivers/memory/tegra/mc.c
+++ b/drivers/memory/tegra/mc.c
@@ -755,6 +755,39 @@ const char *const tegra_mc_error_names[8] = {
[6] = "SMMU translation error",
};
+static int tegra_mc_add_icc_node(struct tegra_mc *mc, unsigned int id, const char *name,
+ unsigned int bpmp_id, unsigned int type)
+{
+ struct tegra_icc_node *tnode;
+ struct icc_node *node;
+ int err;
+
+ tnode = kzalloc(sizeof(*tnode), GFP_KERNEL);
+ if (!tnode)
+ return -ENOMEM;
+
+ /* create MC client node */
+ node = icc_node_create(id);
+ if (IS_ERR(node))
+ return -EINVAL;
+
+ node->name = name;
+ icc_node_add(node, &mc->provider);
+
+ /* link Memory Client to Memory Controller */
+ err = icc_link_create(node, TEGRA_ICC_MC);
+ if (err)
+ return err;
+
+ node->data = tnode;
+ tnode->node = node;
+ tnode->bpmp_id = bpmp_id;
+ tnode->type = type;
+ tnode->mc = mc;
+
+ return 0;
+}
+
/*
* Memory Controller (MC) has few Memory Clients that are issuing memory
* bandwidth allocation requests to the MC interconnect provider. The MC
@@ -780,7 +813,6 @@ const char *const tegra_mc_error_names[8] = {
*/
static int tegra_mc_interconnect_setup(struct tegra_mc *mc)
{
- struct tegra_icc_node *tnode;
struct icc_node *node;
unsigned int i;
int err;
@@ -820,30 +852,23 @@ static int tegra_mc_interconnect_setup(struct tegra_mc *mc)
goto remove_nodes;
for (i = 0; i < mc->soc->num_clients; i++) {
- tnode = kzalloc(sizeof(*tnode), GFP_KERNEL);
- if (!tnode)
- return -ENOMEM;
-
- /* create MC client node */
- node = icc_node_create(mc->soc->clients[i].id);
- if (IS_ERR(node)) {
- err = PTR_ERR(node);
+ err = tegra_mc_add_icc_node(mc, mc->soc->clients[i].id,
+ mc->soc->clients[i].name,
+ mc->soc->clients[i].bpmp_id,
+ mc->soc->clients[i].type);
+ if (err)
goto remove_nodes;
- }
- node->name = mc->soc->clients[i].name;
- icc_node_add(node, &mc->provider);
+ }
+
+ for (i = 0; i < mc->soc->num_sw_clients; i++) {
+ err = tegra_mc_add_icc_node(mc, mc->soc->sw_clients[i].id,
+ mc->soc->sw_clients[i].name,
+ mc->soc->sw_clients[i].bpmp_id,
+ mc->soc->sw_clients[i].type);
- /* link Memory Client to Memory Controller */
- err = icc_link_create(node, TEGRA_ICC_MC);
if (err)
goto remove_nodes;
-
- node->data = tnode;
- tnode->node = node;
- tnode->type = mc->soc->clients[i].type;
- tnode->bpmp_id = mc->soc->clients[i].bpmp_id;
- tnode->mc = mc;
}
return 0;
diff --git a/drivers/memory/tegra/tegra234.c b/drivers/memory/tegra/tegra234.c
index 420546270c8b..82ce6c3c3eb0 100644
--- a/drivers/memory/tegra/tegra234.c
+++ b/drivers/memory/tegra/tegra234.c
@@ -780,6 +780,25 @@ static const struct tegra_mc_client tegra234_mc_clients[] = {
}
};
+static const struct tegra_mc_sw_client tegra234_mc_sw_clients[] = {
+ {
+ .id = TEGRA_ICC_MC_CPU_CLUSTER0,
+ .name = "sw_cluster0",
+ .bpmp_id = TEGRA_ICC_BPMP_CPU_CLUSTER0,
+ .type = TEGRA_ICC_NISO,
+ }, {
+ .id = TEGRA_ICC_MC_CPU_CLUSTER1,
+ .name = "sw_cluster1",
+ .bpmp_id = TEGRA_ICC_BPMP_CPU_CLUSTER1,
+ .type = TEGRA_ICC_NISO,
+ }, {
+ .id = TEGRA_ICC_MC_CPU_CLUSTER2,
+ .name = "sw_cluster2",
+ .bpmp_id = TEGRA_ICC_BPMP_CPU_CLUSTER2,
+ .type = TEGRA_ICC_NISO,
+ },
+};
+
/*
* tegra234_mc_icc_set() - Pass MC client info to External Memory Controller (EMC)
* @src: ICC node for Memory Controller's (MC) Client
@@ -854,6 +873,8 @@ static const struct tegra_mc_icc_ops tegra234_mc_icc_ops = {
const struct tegra_mc_soc tegra234_mc_soc = {
.num_clients = ARRAY_SIZE(tegra234_mc_clients),
.clients = tegra234_mc_clients,
+ .num_sw_clients = ARRAY_SIZE(tegra234_mc_sw_clients),
+ .sw_clients = tegra234_mc_sw_clients,
.num_address_bits = 40,
.num_channels = 16,
.client_id_mask = 0x1ff,
diff --git a/include/soc/tegra/mc.h b/include/soc/tegra/mc.h
index 0a32a9eb12a4..6a94e88b6100 100644
--- a/include/soc/tegra/mc.h
+++ b/include/soc/tegra/mc.h
@@ -192,6 +192,9 @@ struct tegra_mc_soc {
const struct tegra_mc_client *clients;
unsigned int num_clients;
+ const struct tegra_mc_sw_client *sw_clients;
+ unsigned int num_sw_clients;
+
const unsigned long *emem_regs;
unsigned int num_emem_regs;
diff --git a/include/soc/tegra/tegra-icc.h b/include/soc/tegra/tegra-icc.h
index 3855d8571281..f9bcaae8ffee 100644
--- a/include/soc/tegra/tegra-icc.h
+++ b/include/soc/tegra/tegra-icc.h
@@ -22,6 +22,13 @@ struct tegra_icc_node {
u32 type;
};
+struct tegra_mc_sw_client {
+ unsigned int id;
+ unsigned int bpmp_id;
+ unsigned int type;
+ const char *name;
+};
+
/* ICC ID's for MC client's used in BPMP */
#define TEGRA_ICC_BPMP_DEBUG 1
#define TEGRA_ICC_BPMP_CPU_CLUSTER0 2
--
2.17.1
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