Support printing device info on Ampere+ GPUs. By Benjamin Hadad IV

commit c3d6f2c852eb046e9d4f4f1e6527b52c746b2693
Author: Joshua Bakita <bakitajoshua@gmail.com>
Date:   Sun Oct 29 14:37:51 2023 -0400

    Print Ampere+ device_info fields with correct offsets/widths

    Everything now has been checked against how nvgpu handles it

commit b70849d1ce67a58f9f69b37dc62122f789f4cdf7
Author: Joshua Bakita <jbakita@cs.unc.edu>
Date:   Wed Sep 20 14:27:38 2023 -0400

    Rearrange, fix an off-by-one error, and remove an unused define

    The code in nvdebug.h has been rearranged to enable an easier merge
    against the jbakita-wip branch.

commit 51f808e092846a60ea6c88ea3a1d2e349c92977b
Author: Joshua Bakita <jbakita@cs.unc.edu>
Date:   Wed Sep 20 13:09:17 2023 -0400

    Bug fixes and cleanup for new device_info logic

    - Update comments to match new structure
    - Make show() function idempotent
    - Skip empty table entries without aborting
    - Include names for new engine types
    - Add warning log messages for skipped table entries
    - Remove non-functional runlist file creation logic for Ampere+

commit 1d7adc3be1aef5ac9c144bb24008fd8cc5d688a5
Author: Benjamin Hadad IV <bh4@unc.edu>
Date:   Sat Aug 19 12:47:18 2023 -0400

    Debugging changes made to restore functionality following refactoring.
     - Debugged data display errors.
     - Debugged crash bugs.
     - Debugged memory issue.

commit 9e6cc03cdf736fbd817ed53fa9a7f506bc91a244
Author: Benjamin Hadad IV <bh4@unc.edu>
Date:   Wed Aug 16 22:00:20 2023 -0400

    A variety of changes have been made as part of the code review.
     - Functions have been consolidated.
     - Code was clarified and tidied up overall.
     - Unnecessary elements were removed.

commit 845960fc1b15995fdbd6d61c384567652a150bc4
Author: Benjamin Hadad IV <bh4@unc.edu>
Date:   Fri Jul 28 11:39:28 2023 -0400

    Refactored various systems and debugged minor issues
     - Added device_info_iter
     - Merged functions in device_info_procfs.c
     - Separated device_info data structs by version in nvdebug.h
     - Fixed issue with device_info runlist ID data

commit 8a57aaeba41c43233c323d7e0fc8bf1a81ebc65e
Author: Benjamin Hadad IV <bh4@unc.edu>
Date:   Fri Jul 21 11:32:51 2023 -0400

    I have updated the ptop_device_info_t comment in nvdebug.h.

commit 33c915f08f5dc63674b158ecc18897494256a6d0
Author: Benjamin Hadad IV <bh4@unc.edu>
Date:   Wed Jul 19 13:02:52 2023 -0400

    Debugged device_info functionality
     - Fixed device_info crash bugs
     - Made further edits to display functionality
     - Refactored code to enhance readability

commit bfb4dcf0e78954c0163f3a06a5a088c4d1b437a8
Author: Benjamin Hadad IV <bh4@unc.edu>
Date:   Thu Jul 13 12:13:17 2023 -0400

    This commit is to update the repo for display during a meeting.
    - Added an Ampere version of the device info data.
    - Added Ampere versions of auxillary functions.
    - Modified display functions to accommodate Ampere data.
    - Made other various small modifications.

commit 068e7f4e7208d6c9250ad72208e0b36fd9fdf2f6
Merge: 3725b15 073e897
Author: Benjamin Hadad IV <bh4@unc.edu>
Date:   Mon Jul 10 12:39:12 2023 -0400

    Merge branch 'jbakita-wip' of ssh://rtsrv.cs.unc.edu/public/nvdebug into wip
    I am merging Mr. Bakita's changes (046d7d2) into this repository.

commit 3725b15d5da3e06ef202045d710aa5f15eb72fcc
Author: Benjamin Hadad IV <bh4@unc.edu>
Date:   Mon Jul 3 04:30:54 2023 -0400

    I modified nvdebug.h for Ampere.

1 files changed, 50 insertions, 9 deletions

diff --git a/nvdebug.h b/nvdebug.h
index 3860c2e..b79ede1 100644
--- a/nvdebug.h
+++ b/nvdebug.h
@@ -390,6 +390,7 @@ typedef union {
 #define NV_CHIP_ID_GV11B 0x15B // Jetson Xavier embedded GPU
 #define NV_CHIP_ID_KEPLER 0x0E0
 #define NV_CHIP_ID_VOLTA 0x140
+#define NV_CHIP_ID_AMPERE 0x170
 
 inline static const char* ARCH2NAME(uint32_t arch) {
         switch (arch) {
@@ -461,8 +462,7 @@ typedef union {
         } __attribute__((packed));
 } mc_boot_0_t;
 
-
-/* GPU engine information and control register offsets
+/* GPU engine information and control register offsets (GPU TOPology)
   Each engine is described by one or more entries (terminated by an entry with
   the `has_next_entry` flag unset) in the fixed-size PTOP_DEVICE_INFO table. A
   typical device, such as the graphics/compute engine and any copy engines, are
@@ -473,6 +473,12 @@ typedef union {
   code should check all NV_PTOP_DEVICE_INFO__SIZE_1 entries and not terminate
   upon reaching the first entry of INFO_TYPE_NOT_VALID.
 
+  The fields for the Ampere version of the GPU are a strict subset of those for
+  the earlier versions. They are in different positions within the struct and
+  have names ending in _ampere to distinguish them. Other than that, each
+  Ampere device info field is functionally identical to the equivalent field in
+  the previous version.
+
   INFO_TYPE          : Is this a DATA, ENUM, or ENGINE_TYPE table entry?
   HAS_NEXT_ENTRY     : Does the following entry refer to the same engine?
 
@@ -517,8 +523,11 @@ typedef union {
   Support: Kepler, Maxwell, Pascal, Volta, Ampere
   See dev_top.ref.txt of NVIDIA's open-gpu-doc for more info.
 */
-#define NV_PTOP_DEVICE_INFO(i) (0x00022700+(i)*4)
-#define NV_PTOP_DEVICE_INFO__SIZE_1 64
+
+#define NV_PTOP_DEVICE_INFO_GA100(i) (0x00022800+(i)*4)
+#define NV_PTOP_DEVICE_INFO_GK104(i) (0x00022700+(i)*4)
+#define NV_PTOP_DEVICE_INFO__SIZE_1_GA100(g) (nvdebug_readl(g, 0x0224fc) >> 20)
+#define NV_PTOP_DEVICE_INFO__SIZE_1_GK104 64
 enum DEVICE_INFO_TYPE {INFO_TYPE_NOT_VALID = 0, INFO_TYPE_DATA = 1, INFO_TYPE_ENUM = 2, INFO_TYPE_ENGINE_TYPE = 3};
 enum ENGINE_TYPES {
         ENGINE_GRAPHICS = 0, // GRAPHICS [/compute]
@@ -527,7 +536,7 @@ enum ENGINE_TYPES {
         ENGINE_COPY2 = 3, // [raw/physical] COPY #2
 
         ENGINE_MSPDEC = 8, // Picture DECoder
-        ENGINE_MSPPP = 9, // [Video] Post Processing
+        ENGINE_MSPPP = 9, // [Video] Picture Post Processor
         ENGINE_MSVLD = 10, // [Video] Variable Length Decoder
         ENGINE_MSENC = 11, // [Video] ENCoding
         ENGINE_VIC = 12, // Video Image Compositor
@@ -538,10 +547,12 @@ enum ENGINE_TYPES {
 
         ENGINE_IOCTRL = 18, // I/O ConTRoLler [of NVLINK at least]
         ENGINE_LCE = 19, // Logical Copy Engine
-        ENGINE_GSP = 20, // Gpu System Processor
-        ENGINE_NVJPG = 21, // NVidia JPeG [Decoder] (Ampere+)
+        ENGINE_GSP = 20, // Gpu System Processor (Volta+)
+        ENGINE_NVJPG = 21, // NVidia JPeG [Decoder] (Turing+)
+        ENGINE_OFA = 22, // Optical Flow Accelerator (Turing+)
+        ENGINE_FLA = 23, // [NVLink] Fabric Logical Addressing [?]
 };
-#define ENGINE_TYPES_LEN 22
+#define ENGINE_TYPES_LEN 24
 static const char* const ENGINE_TYPES_NAMES[ENGINE_TYPES_LEN] = {
         "Graphics/Compute",
         "COPY0",
@@ -565,8 +576,38 @@ static const char* const ENGINE_TYPES_NAMES[ENGINE_TYPES_LEN] = {
         "LCE: Logical Copy Engine",
         "GSP: GPU System Processor",
         "NVJPG: NVIDIA JPEG Decoder",
+        "OFA: Optical Flow Accelerator",
+        "FLA: Fabric Logical Addressing",
 };
 
+// These field are from nvgpu/include/nvgpu/hw/ga100/hw_top_ga100.h
+typedef union {
+        // _info type fields
+        struct {
+                uint32_t fault_id:11;
+                 uint32_t padding0:5;
+                uint32_t inst_id:8;
+                enum ENGINE_TYPES engine_type:7; // "type_enum"
+                bool has_next_entry:1;
+        } __attribute__((packed));
+        // _info2 type fields
+        struct {
+                uint32_t reset_id:8;
+                uint32_t pri_base:18; // "device_pri_base"
+                 uint32_t padding1:4;
+                uint32_t is_engine:1;
+                 uint32_t padding2:1;
+        } __attribute__((packed));
+        struct {
+                uint32_t rleng_id:2;
+                 uint32_t padding3:8;
+                uint32_t runlist_pri_base:16;
+                 uint32_t padding4:6;
+        } __attribute__((packed));
+        uint32_t raw;
+} ptop_device_info_ga100_t;
+
+// These field are from open-gpu-doc/manuals/volta/gv100/dev_top.ref.txt
 typedef union {
         // DATA type fields
         struct {
@@ -604,7 +645,7 @@ typedef union {
                  uint32_t padding9:1;
         } __attribute__((packed));
         uint32_t raw;
-} ptop_device_info_t;
+} ptop_device_info_gk104_t;
 
 /* Graphics Processing Cluster (GPC) information
   The GPU's Compute/Graphics engine is subdivided into Graphics Processing