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neuron: ch_haven: Read peer name from device tree

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Add support for the primary vm to read the vm peer name from device
tree. This information is needed to share memory to the peer vm.

Change-Id: I9a38370c8b80480bcdd0988c515adf64b36f99c1
Signed-off-by: Chris Lew <clew@codeaurora.org>
This commit is contained in:
Chris Lew 2020-06-11 00:00:39 -07:00
commit 0fc1e59781
3 changed files with 18 additions and 2 deletions
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9
net/neuron/channel/ch_haven_recv.c
View file

@ -19,6 +19,7 @@
#include <linux/kthread.h>
#include <linux/neuron.h>
#include <asm-generic/barrier.h>
#include <linux/haven/hh_rm_drv.h>
#include <linux/haven/hh_dbl.h>
#include "ch_mq_shmem_common.h"
@ -335,10 +336,16 @@ static int channel_hh_map_memory(struct neuron_mq_data_priv *priv,
return -ENXIO;
}
if (of_property_read_bool(dev->of_node, "qcom,primary"))
if (of_property_read_bool(dev->of_node, "qcom,primary")) {
memset(priv->base, 0,
sizeof(struct neuron_shmem_channel_header));
ret = of_property_read_u32(dev->of_node, "peer-name",
&priv->peer_name);
if (ret)
priv->peer_name = HH_SELF_VM;
}
return 0;
}

9
net/neuron/channel/ch_haven_send.c
View file

@ -19,6 +19,7 @@
#include <linux/kthread.h>
#include <linux/neuron.h>
#include <asm-generic/barrier.h>
#include <linux/haven/hh_rm_drv.h>
#include <linux/haven/hh_dbl.h>
#include "ch_mq_shmem_common.h"
@ -320,10 +321,16 @@ static int channel_hh_map_memory(struct neuron_mq_data_priv *priv,
return -ENXIO;
}
if (of_property_read_bool(dev->of_node, "qcom,primary"))
if (of_property_read_bool(dev->of_node, "qcom,primary")) {
memset(priv->base, 0,
sizeof(struct neuron_shmem_channel_header));
ret = of_property_read_u32(dev->of_node, "peer-name",
&priv->peer_name);
if (ret)
priv->peer_name = HH_SELF_VM;
}
return 0;
}

2
net/neuron/channel/ch_mq_shmem_common.h
View file

@ -76,6 +76,8 @@ struct neuron_mq_data_priv {
atomic64_t virq_payload;
/* A counter to calculate the interrupt received. */
u32 interrupt_counter;
/* name of peer vm */
u32 peer_name;
/* haven tx doorbell descriptor */
void *tx_dbl;
/* haven rx doorbell descriptor */