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gpu: nvgpu: APIs to suspend/resume single SM

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Add below APIs to suspend or resume single SM :
gk20a_suspend_single_sm()
gk20a_resume_single_sm()

Also, update gk20a_suspend_all_sms() to make it
more generic by passing global_esr_mask and
check_errors flag as parameter

Bug 200156699

Change-Id: If40f4bcae74a8132673b4dca10b7d9898f23c164
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/925884
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Deepak Nibade
2015-12-18 12:23:05 +05:30
committed by Sachin Nikam
parent ca76b336b3
commit 4bc0a42f32
3 changed files with 85 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

80
drivers/gpu/nvgpu/gk20a/gr_gk20a.c
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@@ -7021,7 +7021,42 @@ int gk20a_gr_wait_for_sm_lock_down(struct gk20a *g, u32 gpc, u32 tpc,
return -EAGAIN;
}
void gk20a_suspend_all_sms(struct gk20a *g)
void gk20a_suspend_single_sm(struct gk20a *g,
u32 gpc, u32 tpc,
u32 global_esr_mask, bool check_errors)
{
u32 offset;
int err;
u32 dbgr_control0;
offset = proj_gpc_stride_v() * gpc +
proj_tpc_in_gpc_stride_v() * tpc;
/* if an SM debugger isn't attached, skip suspend */
if (!gk20a_gr_sm_debugger_attached(g)) {
gk20a_err(dev_from_gk20a(g),
"SM debugger not attached, skipping suspend!\n");
return;
}
/* assert stop trigger. */
dbgr_control0 = gk20a_readl(g,
gr_gpc0_tpc0_sm_dbgr_control0_r() + offset);
dbgr_control0 |= gr_gpcs_tpcs_sm_dbgr_control0_stop_trigger_enable_f();
gk20a_writel(g, gr_gpc0_tpc0_sm_dbgr_control0_r() + offset,
dbgr_control0);
err = gk20a_gr_wait_for_sm_lock_down(g, gpc, tpc,
global_esr_mask, check_errors);
if (err) {
gk20a_err(dev_from_gk20a(g),
"SuspendSm failed\n");
return;
}
}
void gk20a_suspend_all_sms(struct gk20a *g,
u32 global_esr_mask, bool check_errors)
{
struct gr_gk20a *gr = &g->gr;
u32 gpc, tpc;
@@ -7030,8 +7065,8 @@ void gk20a_suspend_all_sms(struct gk20a *g)
/* if an SM debugger isn't attached, skip suspend */
if (!gk20a_gr_sm_debugger_attached(g)) {
gk20a_err(dev_from_gk20a(g), "SM debugger not attached, "
"skipping suspend!\n");
gk20a_err(dev_from_gk20a(g),
"SM debugger not attached, skipping suspend!\n");
return;
}
@@ -7048,7 +7083,8 @@ void gk20a_suspend_all_sms(struct gk20a *g)
for (gpc = 0; gpc < gr->gpc_count; gpc++) {
for (tpc = 0; tpc < gr->tpc_count; tpc++) {
err =
gk20a_gr_wait_for_sm_lock_down(g, gpc, tpc, 0, false);
gk20a_gr_wait_for_sm_lock_down(g, gpc, tpc,
global_esr_mask, check_errors);
if (err) {
gk20a_err(dev_from_gk20a(g),
"SuspendAllSms failed\n");
@@ -7058,6 +7094,42 @@ void gk20a_suspend_all_sms(struct gk20a *g)
}
}
void gk20a_resume_single_sm(struct gk20a *g,
u32 gpc, u32 tpc)
{
u32 dbgr_control0;
u32 offset;
/*
* The following requires some clarification. Despite the fact that both
* RUN_TRIGGER and STOP_TRIGGER have the word "TRIGGER" in their
* names, only one is actually a trigger, and that is the STOP_TRIGGER.
* Merely writing a 1(_TASK) to the RUN_TRIGGER is not sufficient to
* resume the gpu - the _STOP_TRIGGER must explicitly be set to 0
* (_DISABLE) as well.
* Advice from the arch group: Disable the stop trigger first, as a
* separate operation, in order to ensure that the trigger has taken
* effect, before enabling the run trigger.
*/
offset = proj_gpc_stride_v() * gpc +
proj_tpc_in_gpc_stride_v() * tpc;
/*De-assert stop trigger */
dbgr_control0 =
gk20a_readl(g, gr_gpc0_tpc0_sm_dbgr_control0_r() + offset);
dbgr_control0 = set_field(dbgr_control0,
gr_gpcs_tpcs_sm_dbgr_control0_stop_trigger_m(),
gr_gpcs_tpcs_sm_dbgr_control0_stop_trigger_disable_f());
gk20a_writel(g,
gr_gpcs_tpcs_sm_dbgr_control0_r() + offset, dbgr_control0);
/* Run trigger */
dbgr_control0 |= gr_gpcs_tpcs_sm_dbgr_control0_run_trigger_task_f();
gk20a_writel(g,
gr_gpc0_tpc0_sm_dbgr_control0_r() + offset, dbgr_control0);
}
void gk20a_resume_all_sms(struct gk20a *g)
{
u32 dbgr_control0;