net: ipa: assign endpoint to a resource group

The IPA hardware manages various resources (e.g. descriptors)
internally to perform its functions.  The resources are grouped,
allowing different endpoints to use separate resource pools.  This
way one group of endpoints can be configured to operate unaffected
by the resource use of endpoints in a different group.

Endpoints should be assigned to a resource group, but we currently
don't do that.

Define a new resource_group field in the endpoint configuration
data, and use it to assign the proper resource group to use for
each AP endpoint.

Tested-by: Sujit Kautkar <sujitka@chromium.org>
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c
index b40b711cf4bd..7386e10615d9 100644
--- a/drivers/net/ipa/ipa_endpoint.c
+++ b/drivers/net/ipa/ipa_endpoint.c
@@ -751,6 +751,16 @@ static void ipa_endpoint_init_deaggr(struct ipa_endpoint *endpoint)
 	iowrite32(val, endpoint->ipa->reg_virt + offset);
 }
 
+static void ipa_endpoint_init_rsrc_grp(struct ipa_endpoint *endpoint)
+{
+	u32 offset = IPA_REG_ENDP_INIT_RSRC_GRP_N_OFFSET(endpoint->endpoint_id);
+	struct ipa *ipa = endpoint->ipa;
+	u32 val;
+
+	val = rsrc_grp_encoded(ipa->version, endpoint->data->resource_group);
+	iowrite32(val, ipa->reg_virt + offset);
+}
+
 static void ipa_endpoint_init_seq(struct ipa_endpoint *endpoint)
 {
 	u32 offset = IPA_REG_ENDP_INIT_SEQ_N_OFFSET(endpoint->endpoint_id);
@@ -1328,6 +1338,7 @@ static void ipa_endpoint_program(struct ipa_endpoint *endpoint)
 	ipa_endpoint_init_mode(endpoint);
 	ipa_endpoint_init_aggr(endpoint);
 	ipa_endpoint_init_deaggr(endpoint);
+	ipa_endpoint_init_rsrc_grp(endpoint);
 	ipa_endpoint_init_seq(endpoint);
 	ipa_endpoint_status(endpoint);
 }