Remove set! macros in pmpcfgs, use _write. Add clear_pmp functions.

Tested and working in hardware

Author: dkhayes117

src/register/pmpcfgx.rs

@@ -86,10 +86,8 @@ pub mod pmpcfg0 {
 
     read_csr_as!(Pmpcsr, 0x3A0, __read_pmpcfg0);
     write_csr_as_usize!(0x3A0, __write_pmpcfg0);
-    set!(0x3A0, __set_pmpcfg0);
-    clear!(0x3A0, __clear_pmpcfg0);
 
-    /// set the configuration for pmp(x)
+    /// set the configuration for the defined index in pmpcfg3
     pub unsafe fn set_pmp(index: usize, range: Range, permission: Permission, locked: bool) {
         #[cfg(riscv32)]
         assert!(index < 4);
@@ -100,7 +98,21 @@ pub mod pmpcfg0 {
         let mut value = _read();
         let byte = (locked as usize) << 7 | (range as usize) << 3 | (permission as usize);
         value.set_bits(8 * index..=8 * index + 7, byte);
-        _set(value)
+        _write(value)
+    }
+
+    /// clear the configuration for the defined index in pmpcfg0
+    /// will not work when pmp is locked
+    pub unsafe fn clear_pmp(index: usize) {
+        #[cfg(riscv32)]
+        assert!(index < 4);
+
+        #[cfg(riscv64)]
+        assert!(index < 8);
+
+        let mut value = _read();
+        value.set_bits(8 * index..=8 * index + 7, 0);
+        _write(value);
     }
 }
 
@@ -113,17 +125,25 @@ pub mod pmpcfg1 {
 
     read_csr_as!(Pmpcsr, 0x3A1, __read_pmpcfg1);
     write_csr_as_usize_rv32!(0x3A1, __write_pmpcfg1);
-    set!(0x3A1, __set_pmpcfg1);
-    clear!(0x3A1, __clear_pmpcfg1);
 
-    /// set the configuration for pmp(x)
+    /// set the configuration for the defined index in pmpcfg3
     pub unsafe fn set_pmp(index: usize, range: Range, permission: Permission, locked: bool) {
         assert!(index < 4);
 
         let mut value = _read();
         let byte = (locked as usize) << 7 | (range as usize) << 3 | (permission as usize);
         value.set_bits(8 * index..=8 * index + 7, byte);
-        _set(value)
+        _write(value)
+    }
+
+    /// clear the configuration for the defined index in pmpcfg1
+    /// will not work when pmp is locked
+    pub unsafe fn clear_pmp(index: usize) {
+        assert!(index < 4);
+
+        let mut value = _read();
+        value.set_bits(8 * index..=8 * index + 7, 0);
+        _write(value);
     }
 }
 
@@ -135,10 +155,8 @@ pub mod pmpcfg2 {
 
     read_csr_as!(Pmpcsr, 0x3A2, __read_pmpcfg2);
     write_csr_as_usize!(0x3A2, __write_pmpcfg2);
-    set!(0x3A2, __set_pmpcfg2);
-    clear!(0x3A2, __clear_pmpcfg2);
 
-    /// set the configuration for pmp(x)
+    /// set the configuration for the defined index in pmpcfg3
     pub unsafe fn set_pmp(index: usize, range: Range, permission: Permission, locked: bool) {
         #[cfg(riscv32)]
         assert!(index < 4);
@@ -149,7 +167,21 @@ pub mod pmpcfg2 {
         let mut value = _read();
         let byte = (locked as usize) << 7 | (range as usize) << 3 | (permission as usize);
         value.set_bits(8 * index..=8 * index + 7, byte);
-        _set(value)
+        _write(value)
+    }
+
+    /// clear the configuration for the defined index in pmpcfg2
+    /// will not work when pmp is locked
+    pub unsafe fn clear_pmp(index: usize) {
+        #[cfg(riscv32)]
+        assert!(index < 4);
+
+        #[cfg(riscv64)]
+        assert!(index < 8);
+
+        let mut value = _read();
+        value.set_bits(8 * index..=8 * index + 7, 0);
+        _write(value);
     }
 }
 
@@ -162,16 +194,27 @@ pub mod pmpcfg3 {
 
     read_csr_as!(Pmpcsr, 0x3A3, __read_pmpcfg3);
     write_csr_as_usize_rv32!(0x3A3, __write_pmpcfg3);
-    set!(0x3A3, __set_pmpcfg3);
-    clear!(0x3A3, __clear_pmpcfg3);
 
-    /// set the configuration for pmp(x)
+    /// set the configuration for the defined index in pmpcfg3
     pub unsafe fn set_pmp(index: usize, range: Range, permission: Permission, locked: bool) {
         assert!(index < 4);
 
         let mut value = _read();
         let byte = (locked as usize) << 7 | (range as usize) << 3 | (permission as usize);
         value.set_bits(8 * index..=8 * index + 7, byte);
-        _set(value)
+        _write(value)
+    }
+    /// clear the configuration for the defined index in pmpcfg3
+    /// will not work when pmp is locked
+    pub unsafe fn clear_pmp(index: usize) {
+        #[cfg(riscv32)]
+        assert!(index < 4);
+
+        #[cfg(riscv64)]
+        assert!(index < 8);
+
+        let mut value = _read();
+        value.set_bits(8 * index..=8 * index + 7, 0);
+        _write(value);
     }
 }