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ionpak-thermostat
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fix ethmac initialization

This commit is contained in:
Alexander Shafir 2017-08-07 10:51:44 +08:00 committed by Sebastien Bourdeauducq
parent e7bca6d0c7
commit 115211c143
2 changed files with 27 additions and 25 deletions
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49
firmware/src/ethmac.rs
View File

@ -118,8 +118,8 @@ pub struct EthernetDevice {
} }
impl EthernetDevice { impl EthernetDevice {
pub fn new(mac_addr: EthernetAddress) -> EthernetDevice { pub fn new() -> EthernetDevice {
let mut device = EthernetDevice { EthernetDevice {
tx_desc_buf: [0; ETH_TX_BUFFER_COUNT * ETH_DESC_U32_SIZE], tx_desc_buf: [0; ETH_TX_BUFFER_COUNT * ETH_DESC_U32_SIZE],
rx_desc_buf: [0; ETH_RX_BUFFER_COUNT * ETH_DESC_U32_SIZE], rx_desc_buf: [0; ETH_RX_BUFFER_COUNT * ETH_DESC_U32_SIZE],
tx_cur_desc: 0, tx_cur_desc: 0,
@ -128,31 +128,33 @@ impl EthernetDevice {
rx_counter: 0, rx_counter: 0,
tx_pkt_buf: [0; ETH_TX_BUFFER_COUNT * ETH_TX_BUFFER_SIZE], tx_pkt_buf: [0; ETH_TX_BUFFER_COUNT * ETH_TX_BUFFER_SIZE],
rx_pkt_buf: [0; ETH_RX_BUFFER_COUNT * ETH_RX_BUFFER_SIZE], rx_pkt_buf: [0; ETH_RX_BUFFER_COUNT * ETH_RX_BUFFER_SIZE],
}; }
}
pub fn init(&mut self, mac_addr: EthernetAddress) {
// Initialize TX DMA descriptors // Initialize TX DMA descriptors
for x in 0..ETH_TX_BUFFER_COUNT { for x in 0..ETH_TX_BUFFER_COUNT {
let p = x * ETH_DESC_U32_SIZE; let p = x * ETH_DESC_U32_SIZE;
let r = x * ETH_TX_BUFFER_SIZE; let r = x * ETH_TX_BUFFER_SIZE;
// Initialize transmit flags // Initialize transmit flags
device.tx_desc_buf[p + 0] = 0; self.tx_desc_buf[p + 0] = 0;
// Initialize transmit buffer size // Initialize transmit buffer size
device.tx_desc_buf[p + 1] = 0; self.tx_desc_buf[p + 1] = 0;
// Transmit buffer address // Transmit buffer address
device.tx_desc_buf[p + 2] = (&device.tx_pkt_buf[r] as *const u8) as u32; self.tx_desc_buf[p + 2] = (&self.tx_pkt_buf[r] as *const u8) as u32;
// Next descriptor address // Next descriptor address
if x != ETH_TX_BUFFER_COUNT - 1 { if x != ETH_TX_BUFFER_COUNT - 1 {
device.tx_desc_buf[p + 3] = (&device.tx_desc_buf[p + ETH_DESC_U32_SIZE] as *const u32) as u32; self.tx_desc_buf[p + 3] = (&self.tx_desc_buf[p + ETH_DESC_U32_SIZE] as *const u32) as u32;
} else { } else {
device.tx_desc_buf[p + 3] = (&device.tx_desc_buf[0] as *const u32) as u32; self.tx_desc_buf[p + 3] = (&self.tx_desc_buf[0] as *const u32) as u32;
} }
// Reserved fields // Reserved fields
device.tx_desc_buf[p + 4] = 0; self.tx_desc_buf[p + 4] = 0;
device.tx_desc_buf[p + 5] = 0; self.tx_desc_buf[p + 5] = 0;
// Transmit frame time stamp // Transmit frame time stamp
device.tx_desc_buf[p + 6] = 0; self.tx_desc_buf[p + 6] = 0;
device.tx_desc_buf[p + 7] = 0; self.tx_desc_buf[p + 7] = 0;
} }
// Initialize RX DMA descriptors // Initialize RX DMA descriptors
@ -161,24 +163,24 @@ impl EthernetDevice {
let r = x * ETH_RX_BUFFER_SIZE; let r = x * ETH_RX_BUFFER_SIZE;
// The descriptor is initially owned by the DMA // The descriptor is initially owned by the DMA
device.rx_desc_buf[p + 0] = EMAC_RDES0_OWN; self.rx_desc_buf[p + 0] = EMAC_RDES0_OWN;
// Use chain structure rather than ring structure // Use chain structure rather than ring structure
device.rx_desc_buf[p + 1] = EMAC_RDES1_RCH | ((ETH_RX_BUFFER_SIZE as u32) & EMAC_RDES1_RBS1); self.rx_desc_buf[p + 1] = EMAC_RDES1_RCH | ((ETH_RX_BUFFER_SIZE as u32) & EMAC_RDES1_RBS1);
// Receive buffer address // Receive buffer address
device.rx_desc_buf[p + 2] = (&device.rx_pkt_buf[r] as *const u8) as u32; self.rx_desc_buf[p + 2] = (&self.rx_pkt_buf[r] as *const u8) as u32;
// Next descriptor address // Next descriptor address
if x != ETH_RX_BUFFER_COUNT - 1 { if x != ETH_RX_BUFFER_COUNT - 1 {
device.rx_desc_buf[p + 3] = (&device.rx_desc_buf[p + ETH_DESC_U32_SIZE] as *const u32) as u32; self.rx_desc_buf[p + 3] = (&self.rx_desc_buf[p + ETH_DESC_U32_SIZE] as *const u32) as u32;
} else { } else {
device.rx_desc_buf[p + 3] = (&device.rx_desc_buf[0] as *const u32) as u32; self.rx_desc_buf[p + 3] = (&self.rx_desc_buf[0] as *const u32) as u32;
} }
// Extended status // Extended status
device.rx_desc_buf[p + 4] = 0; self.rx_desc_buf[p + 4] = 0;
// Reserved field // Reserved field
device.rx_desc_buf[p + 5] = 0; self.rx_desc_buf[p + 5] = 0;
// Transmit frame time stamp // Transmit frame time stamp
device.rx_desc_buf[p + 6] = 0; self.rx_desc_buf[p + 6] = 0;
device.rx_desc_buf[p + 7] = 0; self.rx_desc_buf[p + 7] = 0;
} }
cortex_m::interrupt::free(|cs| { cortex_m::interrupt::free(|cs| {
@ -277,8 +279,8 @@ impl EthernetDevice {
emac0.flowctl.write(|w| unsafe { w.bits(0)}); // Disable flow control ??? emac0.flowctl.write(|w| unsafe { w.bits(0)}); // Disable flow control ???
emac0.txdladdr.write(|w| unsafe { w.bits((&device.tx_desc_buf[0] as *const u32) as u32)}); emac0.txdladdr.write(|w| unsafe { w.bits((&self.tx_desc_buf[0] as *const u32) as u32)});
emac0.rxdladdr.write(|w| unsafe { w.bits((&device.rx_desc_buf[0] as *const u32) as u32)}); emac0.rxdladdr.write(|w| unsafe { w.bits((&self.rx_desc_buf[0] as *const u32) as u32)});
// Manage MAC transmission and reception // Manage MAC transmission and reception
emac0.cfg.modify(|_, w| emac0.cfg.modify(|_, w|
@ -292,7 +294,6 @@ impl EthernetDevice {
.st().bit(true) // Start Transmit .st().bit(true) // Start Transmit
); );
}); });
device
} }
fn release_rx_buf(&mut self) { fn release_rx_buf(&mut self) {

3
firmware/src/main.rs
View File

@ -151,7 +151,8 @@ fn main() {
println!("MAC {} IP {}", hardware_addr, protocol_addrs[0]); println!("MAC {} IP {}", hardware_addr, protocol_addrs[0]);
let mut arp_cache_entries: [_; 8] = Default::default(); let mut arp_cache_entries: [_; 8] = Default::default();
let mut arp_cache = SliceArpCache::new(&mut arp_cache_entries[..]); let mut arp_cache = SliceArpCache::new(&mut arp_cache_entries[..]);
let mut device = ethmac::EthernetDevice::new(hardware_addr); let mut device = ethmac::EthernetDevice::new();
device.init(hardware_addr);
let mut iface = EthernetInterface::new( let mut iface = EthernetInterface::new(
&mut device, &mut arp_cache as &mut ArpCache, &mut device, &mut arp_cache as &mut ArpCache,
hardware_addr, &mut protocol_addrs[..]); hardware_addr, &mut protocol_addrs[..]);