gpu: nvgpu: Add PMU thermal RPC for WARN_TEMP

Added PMU thermal slct RPC handling for WARN_TEMP threshold
configuration.

JIRA DNVGPU-130

Change-Id: Iac96557080907bd091217fe983d6a951d0be1da4
Signed-off-by: Lakshmanan M <lm@nvidia.com>
Reviewed-on: http://git-master/r/1242133
(cherry picked from commit 8bca85490e716b974315093c47d0d54ec5fb7e0f)
Reviewed-on: http://git-master/r/1246213
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

2 files changed, 93 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/therm/thrmpmu.c b/drivers/gpu/nvgpu/therm/thrmpmu.c
index 0ff7090b..0d0a4b3a 100644
--- a/drivers/gpu/nvgpu/therm/thrmpmu.c
+++ b/drivers/gpu/nvgpu/therm/thrmpmu.c
@@ -17,6 +17,33 @@
 #include "boardobj/boardobjgrp_e32.h"
 #include "pmuif/gpmuifboardobj.h"
 #include "thrmpmu.h"
+#include "pmuif/gpmuiftherm.h"
+
+struct therm_pmucmdhandler_params {
+        struct nv_pmu_therm_rpc *prpccall;
+        u32 success;
+};
+
+static void therm_pmucmdhandler(struct gk20a *g, struct pmu_msg *msg,
+                        void *param, u32 handle, u32 status)
+{
+        struct therm_pmucmdhandler_params *phandlerparams =
+                (struct therm_pmucmdhandler_params *)param;
+
+        if (msg->msg.therm.msg_type != NV_PMU_THERM_MSG_ID_RPC) {
+                gk20a_err(dev_from_gk20a(g),
+                        "unknow msg %x",
+                        msg->msg.pmgr.msg_type);
+                return;
+        }
+
+        if (!phandlerparams->prpccall->b_supported)
+                gk20a_err(dev_from_gk20a(g),
+                        "RPC msg %x failed",
+                        msg->msg.pmgr.msg_type);
+        else
+                phandlerparams->success = 1;
+}
 
 u32 therm_send_pmgr_tables_to_pmu(struct gk20a *g)
 {
@@ -49,3 +76,67 @@ u32 therm_send_pmgr_tables_to_pmu(struct gk20a *g)
 exit:
         return status;
 }
+
+u32 therm_set_warn_temp_limit(struct gk20a *g)
+{
+        u32 status;
+        u32 seqdesc = 0;
+        struct pmu_cmd cmd = { {0} };
+        struct pmu_msg msg = { {0} };
+        struct pmu_payload payload = { {0} };
+        struct nv_pmu_therm_rpc rpccall = {0};
+        struct therm_pmucmdhandler_params handlerparams = {0};
+
+        rpccall.function = NV_PMU_THERM_RPC_ID_SLCT_EVENT_TEMP_TH_SET;
+        rpccall.params.slct_event_temp_th_set.event_id =
+                NV_PMU_THERM_EVENT_THERMAL_1;
+        rpccall.params.slct_event_temp_th_set.temp_threshold = g->curr_warn_temp;
+        rpccall.b_supported = 0;
+
+        cmd.hdr.unit_id = PMU_UNIT_THERM;
+        cmd.hdr.size = ((u32)sizeof(struct nv_pmu_therm_cmd) +
+                        (u32)sizeof(struct pmu_hdr));
+        cmd.cmd.therm.cmd_type = NV_PMU_THERM_CMD_ID_RPC;
+
+        msg.hdr.size = sizeof(struct pmu_msg);
+
+        payload.in.buf = (u8 *)&rpccall;
+        payload.in.size = (u32)sizeof(struct nv_pmu_therm_rpc);
+        payload.in.fb_size = PMU_CMD_SUBMIT_PAYLOAD_PARAMS_FB_SIZE_UNUSED;
+        payload.in.offset = NV_PMU_THERM_CMD_RPC_ALLOC_OFFSET;
+
+        payload.out.buf = (u8 *)&rpccall;
+        payload.out.size = (u32)sizeof(struct nv_pmu_therm_rpc);
+        payload.out.fb_size = PMU_CMD_SUBMIT_PAYLOAD_PARAMS_FB_SIZE_UNUSED;
+        payload.out.offset = NV_PMU_CLK_MSG_RPC_ALLOC_OFFSET;
+
+        /* Setup the handler params to communicate back results.*/
+        handlerparams.success = 0;
+        handlerparams.prpccall = &rpccall;
+
+        status = gk20a_pmu_cmd_post(g, &cmd, NULL, &payload,
+                                PMU_COMMAND_QUEUE_LPQ,
+                                therm_pmucmdhandler,
+                                (void *)&handlerparams,
+                                &seqdesc, ~0);
+        if (status) {
+                gk20a_err(dev_from_gk20a(g),
+                        "unable to post pmgr cmd for unit %x cmd id %x size %x",
+                        cmd.hdr.unit_id, cmd.cmd.therm.cmd_type, cmd.hdr.size);
+                goto exit;
+        }
+
+        pmu_wait_message_cond(&g->pmu,
+                        gk20a_get_gr_idle_timeout(g),
+                        &handlerparams.success, 1);
+
+        if (handlerparams.success == 0) {
+                gk20a_err(dev_from_gk20a(g), "could not process cmd\n");
+                status = -ETIMEDOUT;
+                goto exit;
+        }
+
+exit:
+        return status;
+}
+
diff --git a/drivers/gpu/nvgpu/therm/thrmpmu.h b/drivers/gpu/nvgpu/therm/thrmpmu.h
index 007af720..e6f70411 100644
--- a/drivers/gpu/nvgpu/therm/thrmpmu.h
+++ b/drivers/gpu/nvgpu/therm/thrmpmu.h
@@ -17,4 +17,6 @@
 
 u32 therm_send_pmgr_tables_to_pmu(struct gk20a *g);
 
+u32 therm_set_warn_temp_limit(struct gk20a *g);
+
 #endif