eculocate

commit 43d1c36bfec21b22256aa7cd5a3965e4b7da3633
parent 8ec58c88013a81f8bfb5eaff1448a1185906c06e
Author: filipton <filipton12@gmail.com>
Date:   Thu,  2 Jan 2025 16:12:10 +0100

wip: port esp32c6

Diffstat:
A
src/mmu_ll/esp32c6.rs
 | 
81
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 81 insertions(+), 0 deletions(-)
diff --git a/src/mmu_ll/esp32c6.rs b/src/mmu_ll/esp32c6.rs
@@ -0,0 +1,81 @@
+use crate::mmu_hal::{MMU_PAGE_16KB, MMU_PAGE_32KB, MMU_PAGE_64KB, MMU_PAGE_8KB};
+
+const SOC_MMU_ENTRY_NUM: u32 = 256;
+const SOC_MMU_VALID_VAL_MASK: u32 = 0x1ff;
+const SOC_MMU_VALID: u32 = 1 << 9;
+
+fn soc_mmu_vaddr_mask(mmu_id: u32) -> u32 {
+    mmu_ll_get_page_size(mmu_id) * SOC_MMU_ENTRY_NUM - 1
+}
+
+pub fn mmu_ll_get_page_size(_mmu_id: u32) -> u32 {
+    let spi_mem = unsafe { &*esp32c6::SPI0::ptr() };
+    let page_size_code = spi_mem.mmu_power_ctrl().read().spi_mmu_page_size().bits();
+
+    match page_size_code {
+        0 => MMU_PAGE_64KB,
+        1 => MMU_PAGE_32KB,
+        2 => MMU_PAGE_16KB,
+        _ => MMU_PAGE_8KB,
+    }
+}
+
+pub fn mmu_ll_get_entry_id(mmu_id: u32, vaddr: u32) -> u32 {
+    let shift_code = match mmu_ll_get_page_size(mmu_id) {
+        MMU_PAGE_64KB => 16,
+        MMU_PAGE_32KB => 15,
+        MMU_PAGE_16KB => 14,
+        MMU_PAGE_8KB => 13,
+        _ => {
+            #[cfg(feature = "log")]
+            log::error!("mmu_ll_get_entry_id failed!");
+
+            0
+        }
+    };
+
+    (vaddr & soc_mmu_vaddr_mask(mmu_id)) >> shift_code
+}
+
+pub fn mmu_ll_entry_id_to_paddr_base(mmu_id: u32, entry_id: u32) -> u32 {
+    let shift_code = match mmu_ll_get_page_size(mmu_id) {
+        MMU_PAGE_64KB => 16,
+        MMU_PAGE_32KB => 15,
+        MMU_PAGE_16KB => 14,
+        MMU_PAGE_8KB => 13,
+        _ => {
+            #[cfg(feature = "log")]
+            log::error!("mmu_ll_entry_id_to_paddr_base failed!");
+
+            0
+        }
+    };
+
+    let spi_mem = unsafe { &*esp32c6::SPI0::ptr() };
+    spi_mem
+        .mmu_item_index()
+        .write(|w| unsafe { w.spi_mmu_item_index().bits(entry_id) });
+
+    let mmu_item_content = spi_mem
+        .mmu_item_content()
+        .read()
+        .spi_mmu_item_content()
+        .bits();
+
+    (mmu_item_content & SOC_MMU_VALID_VAL_MASK) << shift_code
+}
+
+pub fn mmu_ll_check_entry_valid(_mmu_id: u32, entry_id: u32) -> bool {
+    let spi_mem = unsafe { &*esp32c6::SPI0::ptr() };
+    spi_mem
+        .mmu_item_index()
+        .write(|w| unsafe { w.spi_mmu_item_index().bits(entry_id) });
+
+    let mmu_item_content = spi_mem
+        .mmu_item_content()
+        .read()
+        .spi_mmu_item_content()
+        .bits();
+
+    (mmu_item_content & SOC_MMU_VALID) != 0
+}