1 files changed, 30 insertions, 1 deletions

diff --git a/device_info_procfs.c b/device_info_procfs.c
index b139c36..d5350c8 100644
--- a/device_info_procfs.c
+++ b/device_info_procfs.c
@@ -9,7 +9,7 @@
 // @param off  Requested offset. Updated by number of characters written.
 // @return -errno on error, otherwise number of bytes written to *buf
 // Note: Parent `data` field MUST be the GPU index
-static ssize_t nvdebug_reg32_read(struct file *f, char __user *buf, size_t size, loff_t *off) {
+static ssize_t nvdebug_reg32_read(struct file *f, char __user *buf, size_t size, loff_t *off){
         char out[16];
         int chars_written;
         struct nvdebug_state *g = &g_nvdebug_state[file2parentgpuidx(f)];
@@ -22,10 +22,39 @@ static ssize_t nvdebug_reg32_read(struct file *f, char __user *buf, size_t size,
         *off += chars_written;
         return chars_written;
 }
+static ssize_t nvdebug_read4_pascal(struct file *f, char __user *buf, size_t size, loff_t *off){
+        char out[16];
+        int chars_written;
+        struct nvdebug_state *g = &g_nvdebug_state[file2parentgpuidx(f)];
+        void* data = PDE_DATA(file_inode(f));
+        struct combo local_combo  = *(struct combo*) &data;
+
+        // 32 bit register will always take less than 16 characters to print
+        if (size < 16 || *off != 0)
+                return 0;
+        if (local_combo.index % 2 == 0)
+                chars_written = scnprintf(out, 16, "%#0x\n", (nvdebug_readl(g, local_combo.offset) & 0x0f));
+        else
+                chars_written = scnprintf(out, 16, "%#0x\n", (nvdebug_readl(g, local_combo.offset) & 0xf0) >> 4);
+        if (copy_to_user(buf, out, chars_written))
+                printk(KERN_WARNING "Unable to copy all data for %s\n", file_dentry(f)->d_name.name);
+        *off += chars_written;
+        return chars_written;
+
+//(nvdebug_readl(g,NV_LCE_FOR_PCE_GP100(*(int*)PDE_DATA(file_inode(f))))
+
+
+
+}
 struct file_operations nvdebug_read_reg32_file_ops = {
         .read = nvdebug_reg32_read,
         .llseek = default_llseek,
 };
+// File operation for reading 4 bits in 32 bit register (used for Pascal copy engine offsets) 
+struct file_operations nvdebug_read4_pascal_file_ops = {
+        .read = nvdebug_read4_pascal,
+        .llseek = default_llseek,
+};
 
 typedef struct {
         int idx; // Current index in the device_info table