refactor: major code reorganization and cleanup

Author: YanLien

.gitignore

@@ -2,4 +2,6 @@
 .bare-test*
 /docs/*
 
-.uboot*
+.uboot*
+
+.claude

Cargo.lock

@@ -15,6 +15,7 @@ categories = ["no-std", "embedded", "hardware-support"]
 [dependencies]
 tock-registers = "0.9.0"
 log = "0.4"
+dma-api = { version = "0.2", features = ["alloc"] }
 nb = "1.1"
 bitflags = "2.8"
 bytemuck = "1.22.0"
@@ -25,20 +26,17 @@ rlsf = "0.2.1"
 [dev-dependencies]
 # Hardware integration test dependencies (for tests/test.rs)
 bare-test = "0.7"
-pcie = "0.2"
 byte-unit = { version = "5.1.6", default-features = false, features = ["byte"] }
 spin_on = "0.1.1"
 
 [build-dependencies]
 bare-test-macros = "0.2"
 
 [features]
-default = ["pio", "poll"]
+default = ["pio"]
 dma = []
 pio = []
-poll = []
-irq = []
 
 [[test]]
 name = "test"
-harness = false
+harness = false

Cargo.toml

@@ -24,7 +24,6 @@
   * `pub(crate) fn setup_dma_descriptor(&mut self, *data*: &MCIData) -> MCIResult`
   * `pub(crate) fn dma_transfer_data(&mut self, *data*: &MCIData) -> MCIResult`
 
-  
 
 * commit 532156：