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-rw-r--r--drivers/remoteproc/ti_k3_dsp_remoteproc.c6
-rw-r--r--drivers/remoteproc/ti_k3_m4_remoteproc.c6
-rw-r--r--drivers/remoteproc/ti_k3_r5_remoteproc.c180
3 files changed, 90 insertions, 102 deletions
diff --git a/drivers/remoteproc/ti_k3_dsp_remoteproc.c b/drivers/remoteproc/ti_k3_dsp_remoteproc.c
index 2ae0655ddf1d..73be3d216791 100644
--- a/drivers/remoteproc/ti_k3_dsp_remoteproc.c
+++ b/drivers/remoteproc/ti_k3_dsp_remoteproc.c
@@ -568,11 +568,9 @@ static int k3_dsp_reserved_mem_init(struct k3_dsp_rproc *kproc)
return -EINVAL;
rmem = of_reserved_mem_lookup(rmem_np);
- if (!rmem) {
- of_node_put(rmem_np);
- return -EINVAL;
- }
of_node_put(rmem_np);
+ if (!rmem)
+ return -EINVAL;
kproc->rmem[i].bus_addr = rmem->base;
/* 64-bit address regions currently not supported */
diff --git a/drivers/remoteproc/ti_k3_m4_remoteproc.c b/drivers/remoteproc/ti_k3_m4_remoteproc.c
index fba6e393635e..6cd50b16a8e8 100644
--- a/drivers/remoteproc/ti_k3_m4_remoteproc.c
+++ b/drivers/remoteproc/ti_k3_m4_remoteproc.c
@@ -433,11 +433,9 @@ static int k3_m4_reserved_mem_init(struct k3_m4_rproc *kproc)
return -EINVAL;
rmem = of_reserved_mem_lookup(rmem_np);
- if (!rmem) {
- of_node_put(rmem_np);
- return -EINVAL;
- }
of_node_put(rmem_np);
+ if (!rmem)
+ return -EINVAL;
kproc->rmem[i].bus_addr = rmem->base;
/* 64-bit address regions currently not supported */
diff --git a/drivers/remoteproc/ti_k3_r5_remoteproc.c b/drivers/remoteproc/ti_k3_r5_remoteproc.c
index 4894461aa65f..941bb130c85c 100644
--- a/drivers/remoteproc/ti_k3_r5_remoteproc.c
+++ b/drivers/remoteproc/ti_k3_r5_remoteproc.c
@@ -440,13 +440,36 @@ static int k3_r5_rproc_prepare(struct rproc *rproc)
{
struct k3_r5_rproc *kproc = rproc->priv;
struct k3_r5_cluster *cluster = kproc->cluster;
- struct k3_r5_core *core = kproc->core;
+ struct k3_r5_core *core = kproc->core, *core0, *core1;
struct device *dev = kproc->dev;
u32 ctrl = 0, cfg = 0, stat = 0;
u64 boot_vec = 0;
bool mem_init_dis;
int ret;
+ /*
+ * R5 cores require to be powered on sequentially, core0 should be in
+ * higher power state than core1 in a cluster. So, wait for core0 to
+ * power up before proceeding to core1 and put timeout of 2sec. This
+ * waiting mechanism is necessary because rproc_auto_boot_callback() for
+ * core1 can be called before core0 due to thread execution order.
+ *
+ * By placing the wait mechanism here in .prepare() ops, this condition
+ * is enforced for rproc boot requests from sysfs as well.
+ */
+ core0 = list_first_entry(&cluster->cores, struct k3_r5_core, elem);
+ core1 = list_last_entry(&cluster->cores, struct k3_r5_core, elem);
+ if (cluster->mode == CLUSTER_MODE_SPLIT && core == core1 &&
+ !core0->released_from_reset) {
+ ret = wait_event_interruptible_timeout(cluster->core_transition,
+ core0->released_from_reset,
+ msecs_to_jiffies(2000));
+ if (ret <= 0) {
+ dev_err(dev, "can not power up core1 before core0");
+ return -EPERM;
+ }
+ }
+
ret = ti_sci_proc_get_status(core->tsp, &boot_vec, &cfg, &ctrl, &stat);
if (ret < 0)
return ret;
@@ -463,6 +486,14 @@ static int k3_r5_rproc_prepare(struct rproc *rproc)
}
/*
+ * Notify all threads in the wait queue when core0 state has changed so
+ * that threads waiting for this condition can be executed.
+ */
+ core->released_from_reset = true;
+ if (core == core0)
+ wake_up_interruptible(&cluster->core_transition);
+
+ /*
* Newer IP revisions like on J7200 SoCs support h/w auto-initialization
* of TCMs, so there is no need to perform the s/w memzero. This bit is
* configurable through System Firmware, the default value does perform
@@ -507,10 +538,30 @@ static int k3_r5_rproc_unprepare(struct rproc *rproc)
{
struct k3_r5_rproc *kproc = rproc->priv;
struct k3_r5_cluster *cluster = kproc->cluster;
- struct k3_r5_core *core = kproc->core;
+ struct k3_r5_core *core = kproc->core, *core0, *core1;
struct device *dev = kproc->dev;
int ret;
+ /*
+ * Ensure power-down of cores is sequential in split mode. Core1 must
+ * power down before Core0 to maintain the expected state. By placing
+ * the wait mechanism here in .unprepare() ops, this condition is
+ * enforced for rproc stop or shutdown requests from sysfs and device
+ * removal as well.
+ */
+ core0 = list_first_entry(&cluster->cores, struct k3_r5_core, elem);
+ core1 = list_last_entry(&cluster->cores, struct k3_r5_core, elem);
+ if (cluster->mode == CLUSTER_MODE_SPLIT && core == core0 &&
+ core1->released_from_reset) {
+ ret = wait_event_interruptible_timeout(cluster->core_transition,
+ !core1->released_from_reset,
+ msecs_to_jiffies(2000));
+ if (ret <= 0) {
+ dev_err(dev, "can not power down core0 before core1");
+ return -EPERM;
+ }
+ }
+
/* Re-use LockStep-mode reset logic for Single-CPU mode */
ret = (cluster->mode == CLUSTER_MODE_LOCKSTEP ||
cluster->mode == CLUSTER_MODE_SINGLECPU) ?
@@ -518,6 +569,14 @@ static int k3_r5_rproc_unprepare(struct rproc *rproc)
if (ret)
dev_err(dev, "unable to disable cores, ret = %d\n", ret);
+ /*
+ * Notify all threads in the wait queue when core1 state has changed so
+ * that threads waiting for this condition can be executed.
+ */
+ core->released_from_reset = false;
+ if (core == core1)
+ wake_up_interruptible(&cluster->core_transition);
+
return ret;
}
@@ -543,7 +602,7 @@ static int k3_r5_rproc_start(struct rproc *rproc)
struct k3_r5_rproc *kproc = rproc->priv;
struct k3_r5_cluster *cluster = kproc->cluster;
struct device *dev = kproc->dev;
- struct k3_r5_core *core0, *core;
+ struct k3_r5_core *core;
u32 boot_addr;
int ret;
@@ -565,21 +624,9 @@ static int k3_r5_rproc_start(struct rproc *rproc)
goto unroll_core_run;
}
} else {
- /* do not allow core 1 to start before core 0 */
- core0 = list_first_entry(&cluster->cores, struct k3_r5_core,
- elem);
- if (core != core0 && core0->rproc->state == RPROC_OFFLINE) {
- dev_err(dev, "%s: can not start core 1 before core 0\n",
- __func__);
- return -EPERM;
- }
-
ret = k3_r5_core_run(core);
if (ret)
return ret;
-
- core->released_from_reset = true;
- wake_up_interruptible(&cluster->core_transition);
}
return 0;
@@ -620,8 +667,7 @@ static int k3_r5_rproc_stop(struct rproc *rproc)
{
struct k3_r5_rproc *kproc = rproc->priv;
struct k3_r5_cluster *cluster = kproc->cluster;
- struct device *dev = kproc->dev;
- struct k3_r5_core *core1, *core = kproc->core;
+ struct k3_r5_core *core = kproc->core;
int ret;
/* halt all applicable cores */
@@ -634,16 +680,6 @@ static int k3_r5_rproc_stop(struct rproc *rproc)
}
}
} else {
- /* do not allow core 0 to stop before core 1 */
- core1 = list_last_entry(&cluster->cores, struct k3_r5_core,
- elem);
- if (core != core1 && core1->rproc->state != RPROC_OFFLINE) {
- dev_err(dev, "%s: can not stop core 0 before core 1\n",
- __func__);
- ret = -EPERM;
- goto out;
- }
-
ret = k3_r5_core_halt(core);
if (ret)
goto out;
@@ -947,6 +983,13 @@ out:
return ret;
}
+static void k3_r5_mem_release(void *data)
+{
+ struct device *dev = data;
+
+ of_reserved_mem_device_release(dev);
+}
+
static int k3_r5_reserved_mem_init(struct k3_r5_rproc *kproc)
{
struct device *dev = kproc->dev;
@@ -977,28 +1020,25 @@ static int k3_r5_reserved_mem_init(struct k3_r5_rproc *kproc)
return ret;
}
+ ret = devm_add_action_or_reset(dev, k3_r5_mem_release, dev);
+ if (ret)
+ return ret;
+
num_rmems--;
- kproc->rmem = kcalloc(num_rmems, sizeof(*kproc->rmem), GFP_KERNEL);
- if (!kproc->rmem) {
- ret = -ENOMEM;
- goto release_rmem;
- }
+ kproc->rmem = devm_kcalloc(dev, num_rmems, sizeof(*kproc->rmem), GFP_KERNEL);
+ if (!kproc->rmem)
+ return -ENOMEM;
/* use remaining reserved memory regions for static carveouts */
for (i = 0; i < num_rmems; i++) {
rmem_np = of_parse_phandle(np, "memory-region", i + 1);
- if (!rmem_np) {
- ret = -EINVAL;
- goto unmap_rmem;
- }
+ if (!rmem_np)
+ return -EINVAL;
rmem = of_reserved_mem_lookup(rmem_np);
- if (!rmem) {
- of_node_put(rmem_np);
- ret = -EINVAL;
- goto unmap_rmem;
- }
of_node_put(rmem_np);
+ if (!rmem)
+ return -EINVAL;
kproc->rmem[i].bus_addr = rmem->base;
/*
@@ -1013,12 +1053,11 @@ static int k3_r5_reserved_mem_init(struct k3_r5_rproc *kproc)
*/
kproc->rmem[i].dev_addr = (u32)rmem->base;
kproc->rmem[i].size = rmem->size;
- kproc->rmem[i].cpu_addr = ioremap_wc(rmem->base, rmem->size);
+ kproc->rmem[i].cpu_addr = devm_ioremap_wc(dev, rmem->base, rmem->size);
if (!kproc->rmem[i].cpu_addr) {
dev_err(dev, "failed to map reserved memory#%d at %pa of size %pa\n",
i + 1, &rmem->base, &rmem->size);
- ret = -ENOMEM;
- goto unmap_rmem;
+ return -ENOMEM;
}
dev_dbg(dev, "reserved memory%d: bus addr %pa size 0x%zx va %pK da 0x%x\n",
@@ -1029,25 +1068,6 @@ static int k3_r5_reserved_mem_init(struct k3_r5_rproc *kproc)
kproc->num_rmems = num_rmems;
return 0;
-
-unmap_rmem:
- for (i--; i >= 0; i--)
- iounmap(kproc->rmem[i].cpu_addr);
- kfree(kproc->rmem);
-release_rmem:
- of_reserved_mem_device_release(dev);
- return ret;
-}
-
-static void k3_r5_reserved_mem_exit(struct k3_r5_rproc *kproc)
-{
- int i;
-
- for (i = 0; i < kproc->num_rmems; i++)
- iounmap(kproc->rmem[i].cpu_addr);
- kfree(kproc->rmem);
-
- of_reserved_mem_device_release(kproc->dev);
}
/*
@@ -1274,10 +1294,10 @@ init_rmem:
goto out;
}
- ret = rproc_add(rproc);
+ ret = devm_rproc_add(dev, rproc);
if (ret) {
- dev_err(dev, "rproc_add failed, ret = %d\n", ret);
- goto err_add;
+ dev_err_probe(dev, ret, "rproc_add failed\n");
+ goto out;
}
/* create only one rproc in lockstep, single-cpu or
@@ -1287,26 +1307,6 @@ init_rmem:
cluster->mode == CLUSTER_MODE_SINGLECPU ||
cluster->mode == CLUSTER_MODE_SINGLECORE)
break;
-
- /*
- * R5 cores require to be powered on sequentially, core0
- * should be in higher power state than core1 in a cluster
- * So, wait for current core to power up before proceeding
- * to next core and put timeout of 2sec for each core.
- *
- * This waiting mechanism is necessary because
- * rproc_auto_boot_callback() for core1 can be called before
- * core0 due to thread execution order.
- */
- ret = wait_event_interruptible_timeout(cluster->core_transition,
- core->released_from_reset,
- msecs_to_jiffies(2000));
- if (ret <= 0) {
- dev_err(dev,
- "Timed out waiting for %s core to power up!\n",
- rproc->name);
- goto err_powerup;
- }
}
return 0;
@@ -1321,10 +1321,6 @@ err_split:
}
}
-err_powerup:
- rproc_del(rproc);
-err_add:
- k3_r5_reserved_mem_exit(kproc);
out:
/* undo core0 upon any failures on core1 in split-mode */
if (cluster->mode == CLUSTER_MODE_SPLIT && core == core1) {
@@ -1367,10 +1363,6 @@ static void k3_r5_cluster_rproc_exit(void *data)
}
mbox_free_channel(kproc->mbox);
-
- rproc_del(rproc);
-
- k3_r5_reserved_mem_exit(kproc);
}
}
generated by cgit v1.2.3 (git 2.39.0) at 2025-08-12 11:18:03 +0300