four0four · June 1, 2023 21:18 · Jun 1, 2023 · Jun 1, 2023 · Jun 1, 2023 · Jun 1, 2023
diff --git a/smurw-gpu.c b/smurw-gpu.c
@@ -43,7 +43,7 @@ int main(int argc, char* argv[])
                 do_write = 1;
         }
 
-    if((fd = open(filename, O_RDWR | O_SYNC)) == -1) exit(-1);
+        if((fd = open(filename, O_RDWR | O_SYNC)) == -1) exit(-1);
         //fprintf(stderr, "%s opened.\n", filename);
 
 

diff --git a/smurw-gpu.c b/smurw-gpu.c
@@ -34,7 +34,6 @@ int main(int argc, char* argv[])
         int fd = -1;
         char *filename = argv[1];
         uint32_t target = strtoul(argv[2], 0, 0);
-    size_t map_size = 0x1000;
         uint32_t writeval = 0;
         int do_write = 0;
 
@@ -49,7 +48,7 @@ int main(int argc, char* argv[])
 
 
         void *map_base =
-                mmap(0, map_size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
+                mmap(0, 0x1000, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
 
         //fprintf(stderr, "%p\n", map_base);
 

diff --git a/smurw-gpu.c b/smurw-gpu.c
@@ -0,0 +1,71 @@
+/* smutool  Tool for SMU
+ * Copyright (C) 2015  Damien Zammit <[email protected]>
+ * Copyright (C) 2023  Sheep Sun <[email protected]>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * See <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+#include <inttypes.h>
+#include <pci/pci.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <sys/io.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+
+#define SMU_DATA 0x204
+#define SMU_ADDR 0x200
+
+
+int main(int argc, char* argv[])
+{
+
+        int fd = -1;
+        char *filename = argv[1];
+        uint32_t target = strtoul(argv[2], 0, 0);
+    size_t map_size = 0x1000;
+        uint32_t writeval = 0;
+        int do_write = 0;
+
+
+        if(argc > 3) {
+                writeval = strtoul(argv[3], 0, 0);
+                do_write = 1;
+        }
+
+    if((fd = open(filename, O_RDWR | O_SYNC)) == -1) exit(-1);
+        //fprintf(stderr, "%s opened.\n", filename);
+
+
+        void *map_base =
+                mmap(0, map_size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
+
+        //fprintf(stderr, "%p\n", map_base);
+
+        volatile uint32_t *smu_data_m = map_base + SMU_DATA;
+        volatile uint32_t *smu_addr_m = map_base + SMU_ADDR;
+        if (do_write == 0) {
+                *smu_addr_m = target;
+                uint32_t res = *smu_data_m;
+                //fprintf(stderr, "[%p] -> 0x%08x\n",target, res) ;
+                printf("0x%08x\n",res);
+        } else {
+                *smu_addr_m = target;
+                *smu_data_m = writeval;
+                //fprintf(stderr, "0x%08x -> [%p] (-> 0x%08x)\n", writeval, target, *smu_data_m);
+        }
+
+        //fprintf(stderr, "exiting\n");
+        return 0;
+}