gpu: nvgpu: falcon status dump support

- Added support to dump flacon controller status
- Method to print recent PC history to know call trace
- Method to dump IMBLK info
- Updated falcon hw header files to include
registers of PC trace & IMBLK

JIRA NVGPU-105

Change-Id: Id4aaafd87113d47e552afb21b87f8b087d36004e
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1515371
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>

6 files changed, 319 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/common/falcon/falcon.c b/drivers/gpu/nvgpu/common/falcon/falcon.c
index 4c879e52..c9ab69fe 100644
--- a/drivers/gpu/nvgpu/common/falcon/falcon.c
+++ b/drivers/gpu/nvgpu/common/falcon/falcon.c
@@ -210,6 +210,17 @@ int nvgpu_flcn_bootstrap(struct nvgpu_falcon *flcn, u32 boot_vector)
         return status;
 }
 
+void nvgpu_flcn_dump_stats(struct nvgpu_falcon *flcn)
+{
+        struct nvgpu_falcon_ops *flcn_ops = &flcn->flcn_ops;
+
+        if (flcn_ops->dump_falcon_stats)
+                flcn_ops->dump_falcon_stats(flcn);
+        else
+                nvgpu_warn(flcn->g, "Invalid op on falcon 0x%x ",
+                        flcn->flcn_id);
+}
+
 void nvgpu_flcn_sw_init(struct gk20a *g, u32 flcn_id)
 {
         struct nvgpu_falcon *flcn = NULL;
diff --git a/drivers/gpu/nvgpu/gk20a/flcn_gk20a.c b/drivers/gpu/nvgpu/gk20a/flcn_gk20a.c
index a21342c5..8a3c90d8 100644
--- a/drivers/gpu/nvgpu/gk20a/flcn_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/flcn_gk20a.c
@@ -15,7 +15,7 @@
 
 #include "gk20a/gk20a.h"
 
-#include <nvgpu/hw/gk20a/hw_falcon_gk20a.h>
+#include <nvgpu/hw/gm20b/hw_falcon_gm20b.h>
 
 static int gk20a_flcn_reset(struct nvgpu_falcon *flcn)
 {
@@ -344,6 +344,180 @@ static int gk20a_falcon_bootstrap(struct nvgpu_falcon *flcn,
         return 0;
 }
 
+static void gk20a_falcon_dump_imblk(struct nvgpu_falcon *flcn)
+{
+        struct gk20a *g = flcn->g;
+        u32 base_addr = flcn->flcn_base;
+        u32 i = 0, j = 0;
+        u32 data[8] = {0};
+        u32 block_count = 0;
+
+        block_count = falcon_falcon_hwcfg_imem_size_v(gk20a_readl(g,
+                flcn->flcn_base + falcon_falcon_hwcfg_r()));
+
+        /* block_count must be multiple of 8 */
+        block_count &= ~0x7;
+        nvgpu_err(g, "FALCON IMEM BLK MAPPING (PA->VA) (%d TOTAL):",
+                block_count);
+
+        for (i = 0; i < block_count; i += 8) {
+                for (j = 0; j < 8; j++) {
+                        gk20a_writel(g, flcn->flcn_base +
+                        falcon_falcon_imctl_debug_r(),
+                        falcon_falcon_imctl_debug_cmd_f(0x2) |
+                        falcon_falcon_imctl_debug_addr_blk_f(i + j));
+
+                        data[j] = gk20a_readl(g, base_addr +
+                                falcon_falcon_imstat_r());
+                }
+
+                nvgpu_err(g, " %#04x: %#010x %#010x %#010x %#010x",
+                                i, data[0], data[1], data[2], data[3]);
+                nvgpu_err(g, " %#04x: %#010x %#010x %#010x %#010x",
+                                i + 4, data[4], data[5], data[6], data[7]);
+        }
+}
+
+static void gk20a_falcon_dump_pc_trace(struct nvgpu_falcon *flcn)
+{
+        struct gk20a *g = flcn->g;
+        u32 base_addr = flcn->flcn_base;
+        u32 trace_pc_count = 0;
+        u32 pc = 0;
+        u32 i = 0;
+
+        if (gk20a_readl(g, base_addr + falcon_falcon_sctl_r()) & 0x02) {
+                nvgpu_err(g, " falcon is in HS mode, PC TRACE dump not supported");
+                return;
+        }
+
+        trace_pc_count = falcon_falcon_traceidx_maxidx_v(gk20a_readl(g,
+                base_addr + falcon_falcon_traceidx_r()));
+        nvgpu_err(g,
+                "PC TRACE (TOTAL %d ENTRIES. entry 0 is the most recent branch):",
+                trace_pc_count);
+
+        for (i = 0; i < trace_pc_count; i++) {
+                gk20a_writel(g, base_addr + falcon_falcon_traceidx_r(),
+                        falcon_falcon_traceidx_idx_f(i));
+
+                pc = falcon_falcon_tracepc_pc_v(gk20a_readl(g,
+                        base_addr + falcon_falcon_tracepc_r()));
+                nvgpu_err(g, "FALCON_TRACEPC(%d)  :  %#010x", i, pc);
+        }
+}
+
+void gk20a_falcon_dump_stats(struct nvgpu_falcon *flcn)
+{
+        struct gk20a *g = flcn->g;
+        u32 base_addr = flcn->flcn_base;
+        unsigned int i;
+
+        nvgpu_err(g, "<<< FALCON id-%d DEBUG INFORMATION - START >>>",
+                        flcn->flcn_id);
+
+        /* imblk dump */
+        gk20a_falcon_dump_imblk(flcn);
+        /* PC trace dump */
+        gk20a_falcon_dump_pc_trace(flcn);
+
+        nvgpu_err(g, "FALCON ICD REGISTERS DUMP");
+
+        for (i = 0; i < 4; i++) {
+                gk20a_writel(g, base_addr + falcon_falcon_icd_cmd_r(),
+                        falcon_falcon_icd_cmd_opc_rreg_f() |
+                        falcon_falcon_icd_cmd_idx_f(FALCON_REG_PC));
+                nvgpu_err(g, "FALCON_REG_PC : 0x%x",
+                        gk20a_readl(g, base_addr +
+                        falcon_falcon_icd_rdata_r()));
+
+                gk20a_writel(g, base_addr + falcon_falcon_icd_cmd_r(),
+                        falcon_falcon_icd_cmd_opc_rreg_f() |
+                        falcon_falcon_icd_cmd_idx_f(FALCON_REG_SP));
+                nvgpu_err(g, "FALCON_REG_SP : 0x%x",
+                        gk20a_readl(g, base_addr +
+                        falcon_falcon_icd_rdata_r()));
+        }
+
+        gk20a_writel(g, base_addr + falcon_falcon_icd_cmd_r(),
+                falcon_falcon_icd_cmd_opc_rreg_f() |
+                falcon_falcon_icd_cmd_idx_f(FALCON_REG_IMB));
+        nvgpu_err(g, "FALCON_REG_IMB : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_icd_rdata_r()));
+
+        gk20a_writel(g, base_addr + falcon_falcon_icd_cmd_r(),
+                falcon_falcon_icd_cmd_opc_rreg_f() |
+                falcon_falcon_icd_cmd_idx_f(FALCON_REG_DMB));
+        nvgpu_err(g, "FALCON_REG_DMB : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_icd_rdata_r()));
+
+        gk20a_writel(g, base_addr + falcon_falcon_icd_cmd_r(),
+                falcon_falcon_icd_cmd_opc_rreg_f() |
+                falcon_falcon_icd_cmd_idx_f(FALCON_REG_CSW));
+        nvgpu_err(g, "FALCON_REG_CSW : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_icd_rdata_r()));
+
+        gk20a_writel(g, base_addr + falcon_falcon_icd_cmd_r(),
+                falcon_falcon_icd_cmd_opc_rreg_f() |
+                falcon_falcon_icd_cmd_idx_f(FALCON_REG_CTX));
+        nvgpu_err(g, "FALCON_REG_CTX : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_icd_rdata_r()));
+
+        gk20a_writel(g, base_addr + falcon_falcon_icd_cmd_r(),
+                falcon_falcon_icd_cmd_opc_rreg_f() |
+                falcon_falcon_icd_cmd_idx_f(FALCON_REG_EXCI));
+        nvgpu_err(g, "FALCON_REG_EXCI : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_icd_rdata_r()));
+
+        for (i = 0; i < 6; i++) {
+                gk20a_writel(g, base_addr + falcon_falcon_icd_cmd_r(),
+                        falcon_falcon_icd_cmd_opc_rreg_f() |
+                        falcon_falcon_icd_cmd_idx_f(
+                        falcon_falcon_icd_cmd_opc_rstat_f()));
+                nvgpu_err(g, "FALCON_REG_RSTAT[%d] : 0x%x", i,
+                        gk20a_readl(g, base_addr +
+                                falcon_falcon_icd_rdata_r()));
+        }
+
+        nvgpu_err(g, " FALCON REGISTERS DUMP");
+        nvgpu_err(g, "falcon_falcon_os_r : %d",
+                gk20a_readl(g, base_addr + falcon_falcon_os_r()));
+        nvgpu_err(g, "falcon_falcon_cpuctl_r : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_cpuctl_r()));
+        nvgpu_err(g, "falcon_falcon_idlestate_r : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_idlestate_r()));
+        nvgpu_err(g, "falcon_falcon_mailbox0_r : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_mailbox0_r()));
+        nvgpu_err(g, "falcon_falcon_mailbox1_r : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_mailbox1_r()));
+        nvgpu_err(g, "falcon_falcon_irqstat_r : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_irqstat_r()));
+        nvgpu_err(g, "falcon_falcon_irqmode_r : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_irqmode_r()));
+        nvgpu_err(g, "falcon_falcon_irqmask_r : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_irqmask_r()));
+        nvgpu_err(g, "falcon_falcon_irqdest_r : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_irqdest_r()));
+        nvgpu_err(g, "falcon_falcon_debug1_r : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_debug1_r()));
+        nvgpu_err(g, "falcon_falcon_debuginfo_r : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_debuginfo_r()));
+        nvgpu_err(g, "falcon_falcon_bootvec_r : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_bootvec_r()));
+        nvgpu_err(g, "falcon_falcon_hwcfg_r : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_hwcfg_r()));
+        nvgpu_err(g, "falcon_falcon_engctl_r : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_engctl_r()));
+        nvgpu_err(g, "falcon_falcon_curctx_r : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_curctx_r()));
+        nvgpu_err(g, "falcon_falcon_nxtctx_r : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_nxtctx_r()));
+        nvgpu_err(g, "falcon_falcon_exterrstat_r : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_exterrstat_r()));
+        nvgpu_err(g, "falcon_falcon_exterraddr_r : 0x%x",
+                gk20a_readl(g, base_addr + falcon_falcon_exterraddr_r()));
+}
+
 static void gk20a_falcon_engine_dependency_ops(struct nvgpu_falcon *flcn)
 {
         struct nvgpu_falcon_engine_dependency_ops *flcn_eng_dep_ops =
@@ -378,6 +552,7 @@ void gk20a_falcon_ops(struct nvgpu_falcon *flcn)
         flcn_ops->copy_to_dmem = gk20a_flcn_copy_to_dmem;
         flcn_ops->copy_to_imem = gk20a_flcn_copy_to_imem;
         flcn_ops->bootstrap = gk20a_falcon_bootstrap;
+        flcn_ops->dump_falcon_stats = gk20a_falcon_dump_stats;
 
         gk20a_falcon_engine_dependency_ops(flcn);
 }
diff --git a/drivers/gpu/nvgpu/include/nvgpu/hw/gk20a/hw_falcon_gk20a.h b/drivers/gpu/nvgpu/include/nvgpu/hw/gk20a/hw_falcon_gk20a.h
index 8acc61ec..a948bf58 100644
--- a/drivers/gpu/nvgpu/include/nvgpu/hw/gk20a/hw_falcon_gk20a.h
+++ b/drivers/gpu/nvgpu/include/nvgpu/hw/gk20a/hw_falcon_gk20a.h
@@ -412,6 +412,30 @@ static inline u32 falcon_falcon_dmatrffboffs_r(void)
 {
         return 0x0000011c;
 }
+static inline u32 falcon_falcon_imstat_r(void)
+{
+        return 0x00000144;
+}
+static inline u32 falcon_falcon_traceidx_r(void)
+{
+        return 0x00000148;
+}
+static inline u32 falcon_falcon_traceidx_maxidx_v(u32 r)
+{
+        return (r >> 16) & 0xff;
+}
+static inline u32 falcon_falcon_traceidx_idx_v(u32 r)
+{
+        return (r >> 0) & 0xff;
+}
+static inline u32 falcon_falcon_tracepc_r(void)
+{
+        return 0x0000014c;
+}
+static inline u32 falcon_falcon_tracepc_pc_v(u32 r)
+{
+        return (r >> 0) & 0xffffff;
+}
 static inline u32 falcon_falcon_exterraddr_r(void)
 {
         return 0x00000168;
diff --git a/drivers/gpu/nvgpu/include/nvgpu/hw/gm20b/hw_falcon_gm20b.h b/drivers/gpu/nvgpu/include/nvgpu/hw/gm20b/hw_falcon_gm20b.h
index 6be11429..851fb62a 100644
--- a/drivers/gpu/nvgpu/include/nvgpu/hw/gm20b/hw_falcon_gm20b.h
+++ b/drivers/gpu/nvgpu/include/nvgpu/hw/gm20b/hw_falcon_gm20b.h
@@ -440,6 +440,42 @@ static inline u32 falcon_falcon_dmatrffboffs_r(void)
 {
         return 0x0000011c;
 }
+static inline u32 falcon_falcon_imctl_debug_r(void)
+{
+        return 0x0000015c;
+}
+static inline u32 falcon_falcon_imctl_debug_addr_blk_f(u32 v)
+{
+        return (v & 0xffffff) << 0;
+}
+static inline u32 falcon_falcon_imctl_debug_cmd_f(u32 v)
+{
+        return (v & 0x7) << 24;
+}
+static inline u32 falcon_falcon_imstat_r(void)
+{
+        return 0x00000144;
+}
+static inline u32 falcon_falcon_traceidx_r(void)
+{
+        return 0x00000148;
+}
+static inline u32 falcon_falcon_traceidx_maxidx_v(u32 r)
+{
+        return (r >> 16) & 0xff;
+}
+static inline u32 falcon_falcon_traceidx_idx_f(u32 v)
+{
+        return (v & 0xff) << 0;
+}
+static inline u32 falcon_falcon_tracepc_r(void)
+{
+        return 0x0000014c;
+}
+static inline u32 falcon_falcon_tracepc_pc_v(u32 r)
+{
+        return (r >> 0) & 0xffffff;
+}
 static inline u32 falcon_falcon_exterraddr_r(void)
 {
         return 0x00000168;
diff --git a/drivers/gpu/nvgpu/include/nvgpu/hw/gp106/hw_falcon_gp106.h b/drivers/gpu/nvgpu/include/nvgpu/hw/gp106/hw_falcon_gp106.h
index c744bcec..4f99f2cb 100644
--- a/drivers/gpu/nvgpu/include/nvgpu/hw/gp106/hw_falcon_gp106.h
+++ b/drivers/gpu/nvgpu/include/nvgpu/hw/gp106/hw_falcon_gp106.h
@@ -444,6 +444,42 @@ static inline u32 falcon_falcon_dmatrffboffs_r(void)
 {
         return 0x0000011c;
 }
+static inline u32 falcon_falcon_imctl_debug_r(void)
+{
+        return 0x0000015c;
+}
+static inline u32 falcon_falcon_imctl_debug_addr_blk_f(u32 v)
+{
+        return (v & 0xffffff) << 0;
+}
+static inline u32 falcon_falcon_imctl_debug_cmd_f(u32 v)
+{
+        return (v & 0x7) << 24;
+}
+static inline u32 falcon_falcon_imstat_r(void)
+{
+        return 0x00000144;
+}
+static inline u32 falcon_falcon_traceidx_r(void)
+{
+        return 0x00000148;
+}
+static inline u32 falcon_falcon_traceidx_maxidx_v(u32 r)
+{
+        return (r >> 16) & 0xff;
+}
+static inline u32 falcon_falcon_traceidx_idx_f(u32 v)
+{
+        return (v & 0xff) << 0;
+}
+static inline u32 falcon_falcon_tracepc_r(void)
+{
+        return 0x0000014c;
+}
+static inline u32 falcon_falcon_tracepc_pc_v(u32 r)
+{
+        return (r >> 0) & 0xffffff;
+}
 static inline u32 falcon_falcon_exterraddr_r(void)
 {
         return 0x00000168;
diff --git a/drivers/gpu/nvgpu/include/nvgpu/hw/gp10b/hw_falcon_gp10b.h b/drivers/gpu/nvgpu/include/nvgpu/hw/gp10b/hw_falcon_gp10b.h
index 7f9d0b5d..67b7ad75 100644
--- a/drivers/gpu/nvgpu/include/nvgpu/hw/gp10b/hw_falcon_gp10b.h
+++ b/drivers/gpu/nvgpu/include/nvgpu/hw/gp10b/hw_falcon_gp10b.h
@@ -420,6 +420,42 @@ static inline u32 falcon_falcon_dmatrfmoffs_r(void)
 {
         return 0x00000114;
 }
+static inline u32 falcon_falcon_imctl_debug_r(void)
+{
+        return 0x0000015c;
+}
+static inline u32 falcon_falcon_imctl_debug_addr_blk_f(u32 v)
+{
+        return (v & 0xffffff) << 0;
+}
+static inline u32 falcon_falcon_imctl_debug_cmd_f(u32 v)
+{
+        return (v & 0x7) << 24;
+}
+static inline u32 falcon_falcon_imstat_r(void)
+{
+        return 0x00000144;
+}
+static inline u32 falcon_falcon_traceidx_r(void)
+{
+        return 0x00000148;
+}
+static inline u32 falcon_falcon_traceidx_maxidx_v(u32 r)
+{
+        return (r >> 16) & 0xff;
+}
+static inline u32 falcon_falcon_traceidx_idx_f(u32 v)
+{
+        return (v & 0xff) << 0;
+}
+static inline u32 falcon_falcon_tracepc_r(void)
+{
+        return 0x0000014c;
+}
+static inline u32 falcon_falcon_tracepc_pc_v(u32 r)
+{
+        return (r >> 0) & 0xffffff;
+}
 static inline u32 falcon_falcon_dmatrfcmd_r(void)
 {
         return 0x00000118;