1 files changed, 164 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/lpwr/rppg.c b/drivers/gpu/nvgpu/lpwr/rppg.c
new file mode 100644
index 00000000..b1c72a4a
--- /dev/null
+++ b/drivers/gpu/nvgpu/lpwr/rppg.c
@@ -0,0 +1,164 @@
+/*
+ * Copyright (c) 2016-2017, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <nvgpu/pmu.h>
+
+#include "gk20a/gk20a.h"
+#include "gp106/bios_gp106.h"
+#include "pstate/pstate.h"
+
+static void pmu_handle_rppg_init_msg(struct gk20a *g, struct pmu_msg *msg,
+        void *param, u32 handle, u32 status)
+{
+
+        u8 ctrlId = NV_PMU_RPPG_CTRL_ID_MAX;
+        u32 *success = param;
+
+        if (status == 0) {
+                switch (msg->msg.pg.rppg_msg.cmn.msg_id) {
+                case NV_PMU_RPPG_MSG_ID_INIT_CTRL_ACK:
+                        ctrlId = msg->msg.pg.rppg_msg.init_ctrl_ack.ctrl_id;
+                        *success = 1;
+                        nvgpu_pmu_dbg(g, "RPPG is acknowledged from PMU %x",
+                                msg->msg.pg.msg_type);
+                break;
+                }
+        }
+
+        nvgpu_pmu_dbg(g, "RPPG is acknowledged from PMU %x",
+                                msg->msg.pg.msg_type);
+}
+
+static u32 rppg_send_cmd(struct gk20a *g, struct nv_pmu_rppg_cmd *prppg_cmd)
+{
+        struct pmu_cmd cmd;
+        u32 seq;
+        u32 status = 0;
+        u32 success = 0;
+
+        memset(&cmd, 0, sizeof(struct pmu_cmd));
+        cmd.hdr.unit_id = PMU_UNIT_PG;
+        cmd.hdr.size   = PMU_CMD_HDR_SIZE +
+                        sizeof(struct nv_pmu_rppg_cmd);
+
+        cmd.cmd.pg.rppg_cmd.cmn.cmd_type = PMU_PMU_PG_CMD_ID_RPPG;
+        cmd.cmd.pg.rppg_cmd.cmn.cmd_id   = prppg_cmd->cmn.cmd_id;
+
+        switch (prppg_cmd->cmn.cmd_id) {
+        case NV_PMU_RPPG_CMD_ID_INIT:
+                break;
+        case NV_PMU_RPPG_CMD_ID_INIT_CTRL:
+                cmd.cmd.pg.rppg_cmd.init_ctrl.ctrl_id =
+                        prppg_cmd->init_ctrl.ctrl_id;
+                cmd.cmd.pg.rppg_cmd.init_ctrl.domain_id =
+                        prppg_cmd->init_ctrl.domain_id;
+                break;
+        case NV_PMU_RPPG_CMD_ID_STATS_RESET:
+                cmd.cmd.pg.rppg_cmd.stats_reset.ctrl_id =
+                        prppg_cmd->stats_reset.ctrl_id;
+                break;
+        default:
+                nvgpu_err(g, "Inivalid RPPG command %d",
+                        prppg_cmd->cmn.cmd_id);
+                return -1;
+        }
+
+        status = nvgpu_pmu_cmd_post(g, &cmd, NULL, NULL, PMU_COMMAND_QUEUE_HPQ,
+                        pmu_handle_rppg_init_msg, &success, &seq, ~0);
+        if (status) {
+                nvgpu_err(g, "Unable to submit parameter command %d",
+                        prppg_cmd->cmn.cmd_id);
+                goto exit;
+        }
+
+        if (prppg_cmd->cmn.cmd_id == NV_PMU_RPPG_CMD_ID_INIT_CTRL) {
+                pmu_wait_message_cond(&g->pmu, gk20a_get_gr_idle_timeout(g),
+                        &success, 1);
+                if (success == 0) {
+                        status = -EINVAL;
+                        nvgpu_err(g, "Ack for the parameter command %x",
+                                prppg_cmd->cmn.cmd_id);
+                }
+        }
+
+exit:
+        return status;
+}
+
+static u32 rppg_init(struct gk20a *g)
+{
+        struct nv_pmu_rppg_cmd rppg_cmd;
+
+        rppg_cmd.init.cmd_id = NV_PMU_RPPG_CMD_ID_INIT;
+
+        return rppg_send_cmd(g, &rppg_cmd);
+}
+
+static u32 rppg_ctrl_init(struct gk20a *g, u8 ctrl_id)
+{
+        struct nv_pmu_rppg_cmd rppg_cmd;
+
+        rppg_cmd.init_ctrl.cmd_id  = NV_PMU_RPPG_CMD_ID_INIT_CTRL;
+        rppg_cmd.init_ctrl.ctrl_id = ctrl_id;
+
+        switch (ctrl_id) {
+        case NV_PMU_RPPG_CTRL_ID_GR:
+        case NV_PMU_RPPG_CTRL_ID_MS:
+                rppg_cmd.init_ctrl.domain_id = NV_PMU_RPPG_DOMAIN_ID_GFX;
+                break;
+        }
+
+        return rppg_send_cmd(g, &rppg_cmd);
+}
+
+u32 init_rppg(struct gk20a *g)
+{
+        u32 status;
+
+        status = rppg_init(g);
+        if (status != 0) {
+                nvgpu_err(g,
+                        "Failed to initialize RPPG in PMU: 0x%08x", status);
+                return status;
+        }
+
+
+        status = rppg_ctrl_init(g, NV_PMU_RPPG_CTRL_ID_GR);
+        if (status != 0) {
+                nvgpu_err(g,
+                        "Failed to initialize RPPG_CTRL: GR in PMU: 0x%08x",
+                        status);
+                return status;
+        }
+
+        status = rppg_ctrl_init(g, NV_PMU_RPPG_CTRL_ID_MS);
+        if (status != 0) {
+                nvgpu_err(g,
+                        "Failed to initialize RPPG_CTRL: MS in PMU: 0x%08x",
+                        status);
+                return status;
+        }
+
+        return status;
+}
+
+