gpu: nvgpu: support CAU ctxsw list

CAU (Counter Aggregation Unit) registers might be split out from SMPC registers
and moved into their own list on some platforms

In gr_gk20a_init_ctx_vars_fw() add support to check if pm_cau list is available
If list is available, count will be set to non-zero here

In add_ctxsw_buffer_map_entries_gpcs(), parse the pm_cau list if count is
non-zero

Bug 2139870

Change-Id: Ia630e7d03481a6f927c6739d28ebfe49f221326f
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1733208
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Matthew Braun (SW-GPU) <matthewb@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gr_ctx_gk20a.c b/drivers/gpu/nvgpu/gk20a/gr_ctx_gk20a.c
index f829cb3a..3f22a1b7 100644
--- a/drivers/gpu/nvgpu/gk20a/gr_ctx_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gr_ctx_gk20a.c
@@ -343,6 +343,14 @@ static int gr_gk20a_init_ctx_vars_fw(struct gk20a *g, struct gr_gk20a *gr)
                                 if (err)
                                         goto clean_up;
                                 break;
+                        case NETLIST_REGIONID_NVPERF_PMCAU:
+                                nvgpu_log_info(g, "NETLIST_REGIONID_NVPERF_PMCAU");
+                                err = gr_gk20a_alloc_load_netlist_aiv(g,
+                                        src, size,
+                                        &g->gr.ctx_vars.ctxsw_regs.pm_cau);
+                                if (err)
+                                        goto clean_up;
+                                break;
 
                         default:
                                 nvgpu_log_info(g, "unrecognized region %d skipped", i);
@@ -395,6 +403,7 @@ clean_up:
                 nvgpu_kfree(g, g->gr.ctx_vars.ctxsw_regs.pm_rop.l);
                 nvgpu_kfree(g, g->gr.ctx_vars.ctxsw_regs.pm_ucgpc.l);
                 nvgpu_kfree(g, g->gr.ctx_vars.ctxsw_regs.etpc.l);
+                nvgpu_kfree(g, g->gr.ctx_vars.ctxsw_regs.pm_cau.l);
                 nvgpu_release_firmware(g, netlist_fw);
                 err = -ENOENT;
         }