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gpu: nvgpu: enhance pbus error reporting

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-Dump timeout save0 and save1 even if they could
 be unreliable when fecs_tgt in set in save0 . This
 is good to have for debug purposes.
-Add priv_ring hal for decode_error_code
-Decode fecs error code for supported error types

Bug 1998067

Change-Id: I60cb6902d099df4a7df45fa624e44d9e0d46360f
Signed-off-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1683014
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Seema Khowala
2018-03-27 11:52:27 -07:00
committed by mobile promotions
parent f81d83690f
commit aa7ee8dac0
8 changed files with 43 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

48
drivers/gpu/nvgpu/gk20a/bus_gk20a.c
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2017-2018, 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"),
@@ -65,7 +65,7 @@ void gk20a_bus_init_hw(struct gk20a *g)
void gk20a_bus_isr(struct gk20a *g)
{
u32 val, save0, save1, err_code;
u32 val, save0, save1, fecs_errcode = 0;
val = gk20a_readl(g, bus_intr_0_r());
@@ -78,29 +78,37 @@ void gk20a_bus_isr(struct gk20a *g)
save0 = gk20a_readl(g, timer_pri_timeout_save_0_r());
if (timer_pri_timeout_save_0_fecs_tgt_v(save0)) {
err_code = gk20a_readl(g,
/*
* write & addr fields in timeout_save0
* might not be reliable
*/
fecs_errcode = gk20a_readl(g,
timer_pri_timeout_fecs_errcode_r());
/* write and addr fields are not reliable */
nvgpu_err(g, "NV_PBUS_INTR_0: 0x%08x "
"FECS_ERRCODE 0x%08x", val, err_code);
if ((err_code & 0xffffff00) == 0xbadf1300)
nvgpu_err(g, "NV_PGRAPH_PRI_GPC0_GPCCS_FS_GPC: "
"0x%08x",
gk20a_readl(g, gr_gpc0_fs_gpc_r()));
} else {
save1 = gk20a_readl(g, timer_pri_timeout_save_1_r());
nvgpu_err(g, "NV_PBUS_INTR_0: 0x%08x ADR 0x%08x "
"R/W %s DATA 0x%08x",
val,
timer_pri_timeout_save_0_addr_v(save0) << 2,
timer_pri_timeout_save_0_write_v(save0) ?
"WRITE" : "READ", save1);
}
save1 = gk20a_readl(g, timer_pri_timeout_save_1_r());
nvgpu_err(g, "NV_PBUS_INTR_0: 0x%08x ADR 0x%08x "
"%s DATA 0x%08x ",
val,
timer_pri_timeout_save_0_addr_v(save0) << 2,
timer_pri_timeout_save_0_write_v(save0) ?
"WRITE" : "READ", save1);
gk20a_writel(g, timer_pri_timeout_save_0_r(), 0);
gk20a_writel(g, timer_pri_timeout_save_1_r(), 0);
if (fecs_errcode) {
nvgpu_err(g, "FECS_ERRCODE 0x%08x", fecs_errcode);
if (g->ops.priv_ring.decode_error_code)
g->ops.priv_ring.decode_error_code(g,
fecs_errcode);
if ((fecs_errcode & 0xffffff00) == 0xbadf1300)
nvgpu_err(g, "NV_PGRAPH_PRI_GPC0_GPCCS_FS_GPC: "
"0x%08x",
gk20a_readl(g, gr_gpc0_fs_gpc_r()));
}
} else {
nvgpu_err(g, "Unhandled NV_PBUS_INTR_0: 0x%08x", val);
}