gpu: nvgpu: remove code for ch not bound to tsg

- Remove handling for channels that are no more bound to tsg
  as channel could be referenceable but no more part of a tsg
- Use tsg_gk20a_from_ch to get pointer to tsg for a given channel
- Clear unhandled gr interrupts

Bug 2429295
JIRA NVGPU-1580

Change-Id: I9da43a2bc9a0282c793b9f301eaf8e8604f91d70
Signed-off-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1972492
(cherry picked from commit 013ca60edd97e7719e389b3048fed9b165277251
in dev-kernel)
Reviewed-on: https://git-master.nvidia.com/r/2018262
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Debarshi Dutta <ddutta@nvidia.com>
Tested-by: Debarshi Dutta <ddutta@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 6 insertions, 9 deletions

diff --git a/drivers/gpu/nvgpu/vgpu/fifo_vgpu.c b/drivers/gpu/nvgpu/vgpu/fifo_vgpu.c
index 4055d5af..60ab628a 100644
--- a/drivers/gpu/nvgpu/vgpu/fifo_vgpu.c
+++ b/drivers/gpu/nvgpu/vgpu/fifo_vgpu.c
@@ -641,9 +641,8 @@ int vgpu_fifo_force_reset_ch(struct channel_gk20a *ch,
 
         nvgpu_log_fn(g, " ");
 
-        if (gk20a_is_channel_marked_as_tsg(ch)) {
-                tsg = &g->fifo.tsg[ch->tsgid];
-
+        tsg = tsg_gk20a_from_ch(ch);
+        if (tsg != NULL) {
                 nvgpu_rwsem_down_read(&tsg->ch_list_lock);
 
                 nvgpu_list_for_each_entry(ch_tsg, &tsg->ch_list,
@@ -658,8 +657,7 @@ int vgpu_fifo_force_reset_ch(struct channel_gk20a *ch,
 
                 nvgpu_rwsem_up_read(&tsg->ch_list_lock);
         } else {
-                g->ops.fifo.set_error_notifier(ch, err_code);
-                gk20a_channel_set_timedout(ch);
+                nvgpu_err(g, "chid: %d is not bound to tsg", ch->chid);
         }
 
         msg.cmd = TEGRA_VGPU_CMD_CHANNEL_FORCE_RESET;
@@ -698,9 +696,8 @@ static void vgpu_fifo_set_ctx_mmu_error_ch_tsg(struct gk20a *g,
         struct tsg_gk20a *tsg = NULL;
         struct channel_gk20a *ch_tsg = NULL;
 
-        if (gk20a_is_channel_marked_as_tsg(ch)) {
-                tsg = &g->fifo.tsg[ch->tsgid];
-
+        tsg = tsg_gk20a_from_ch(ch);
+        if (tsg != NULL) {
                 nvgpu_rwsem_down_read(&tsg->ch_list_lock);
 
                 nvgpu_list_for_each_entry(ch_tsg, &tsg->ch_list,
@@ -713,7 +710,7 @@ static void vgpu_fifo_set_ctx_mmu_error_ch_tsg(struct gk20a *g,
 
                 nvgpu_rwsem_up_read(&tsg->ch_list_lock);
         } else {
-                vgpu_fifo_set_ctx_mmu_error_ch(g, ch);
+                nvgpu_err(g, "chid: %d is not bound to tsg", ch->chid);
         }
 }