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drm/amdgpu/psp: add get_topology_info function 

get_topology_info function is used for driver to query topology_info
for current device from xgmi ta

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Shaoyun Liu <Shaoyun.Liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Hawking Zhang 2018-09-29 22:30:44 +08:00 committed by Alex Deucher
parent 593caa07ad
commit ec1a975e0b
1 changed files with 39 additions and 0 deletions
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39
drivers/gpu/drm/amd/amdgpu/psp_v11_0.c
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@ -570,6 +570,45 @@ static int psp_v11_0_mode1_reset(struct psp_context *psp)
static int psp_v11_0_xgmi_get_topology_info(struct psp_context *psp,
int number_devices, struct psp_xgmi_topology_info *topology)
{
struct ta_xgmi_shared_memory *xgmi_cmd;
struct ta_xgmi_cmd_get_topology_info_input *topology_info_input;
struct ta_xgmi_cmd_get_topology_info_output *topology_info_output;
int i;
int ret;
if (!topology || topology->num_nodes > TA_XGMI__MAX_CONNECTED_NODES)
return -EINVAL;
xgmi_cmd = (struct ta_xgmi_shared_memory*)psp->xgmi_context.xgmi_shared_buf;
memset(xgmi_cmd, 0, sizeof(struct ta_xgmi_shared_memory));
/* Fill in the shared memory with topology information as input */
topology_info_input = &xgmi_cmd->xgmi_in_message.get_topology_info;
xgmi_cmd->cmd_id = TA_COMMAND_XGMI__GET_GET_TOPOLOGY_INFO;
topology_info_input->num_nodes = number_devices;
for (i = 0; i < topology_info_input->num_nodes; i++) {
topology_info_input->nodes[i].node_id = topology->nodes[i].node_id;
topology_info_input->nodes[i].num_hops = topology->nodes[i].num_hops;
topology_info_input->nodes[i].is_sharing_enabled = topology->nodes[i].is_sharing_enabled;
topology_info_input->nodes[i].sdma_engine = topology->nodes[i].sdma_engine;
}
/* Invoke xgmi ta to get the topology information */
ret = psp_xgmi_invoke(psp, TA_COMMAND_XGMI__GET_GET_TOPOLOGY_INFO);
if (ret)
return ret;
/* Read the output topology information from the shared memory */
topology_info_output = &xgmi_cmd->xgmi_out_message.get_topology_info;
topology->num_nodes = xgmi_cmd->xgmi_out_message.get_topology_info.num_nodes;
for (i = 0; i < topology->num_nodes; i++) {
topology->nodes[i].node_id = topology_info_output->nodes[i].node_id;
topology->nodes[i].num_hops = topology_info_output->nodes[i].num_hops;
topology->nodes[i].is_sharing_enabled = topology_info_output->nodes[i].is_sharing_enabled;
topology->nodes[i].sdma_engine = topology_info_output->nodes[i].sdma_engine;
}
return 0;
}