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zynq-rs
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libboard_zynq/ethernet: ethernet fix and config

This commit is contained in:
pca006132 2020-08-21 13:31:08 +08:00
parent a1f859637a
commit bb09d25378
2 changed files with 39 additions and 25 deletions
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46
libboard_zynq/src/eth/mod.rs
View File

@ -27,7 +27,7 @@ const TX_1000: u32 = 125_000_000;
pub struct Buffer(pub [u8; MTU]);
impl Buffer {
pub fn new() -> Self {
pub const fn new() -> Self {
Buffer([0; MTU])
}
}
@ -224,48 +224,48 @@ impl Eth<Gem0, (), ()> {
// RX_CLK
slcr.mio_pin_22.write(
slcr::MioPin22::zeroed()
.tri_enable(true)
.l0_sel(true)
.speed(true)
.io_type(slcr::IoBufferType::Hstl)
.pullup(true)
);
// RX_CTRL
slcr.mio_pin_27.write(
slcr::MioPin27::zeroed()
.tri_enable(true)
.l0_sel(true)
.speed(true)
.io_type(slcr::IoBufferType::Hstl)
.pullup(true)
);
// RXD3
slcr.mio_pin_26.write(
slcr::MioPin26::zeroed()
.tri_enable(true)
.l0_sel(true)
.speed(true)
.io_type(slcr::IoBufferType::Hstl)
.pullup(true)
);
// RXD2
slcr.mio_pin_25.write(
slcr::MioPin25::zeroed()
.tri_enable(true)
.l0_sel(true)
.speed(true)
.io_type(slcr::IoBufferType::Hstl)
.pullup(true)
);
// RXD1
slcr.mio_pin_24.write(
slcr::MioPin24::zeroed()
.tri_enable(true)
.l0_sel(true)
.speed(true)
.io_type(slcr::IoBufferType::Hstl)
.pullup(true)
);
// RXD0
slcr.mio_pin_23.write(
slcr::MioPin23::zeroed()
.tri_enable(true)
.l0_sel(true)
.speed(true)
.io_type(slcr::IoBufferType::Hstl)
.pullup(true)
);
@ -533,7 +533,10 @@ impl<GEM: Gem> EthInner<GEM> {
fn configure(&mut self, macaddr: [u8; 6]) {
let clocks = Clocks::get();
let mdc_clk_div = (clocks.cpu_1x() / MAX_MDC) + 1;
let mut mdc_clk_div = clocks.cpu_1x() / MAX_MDC;
if clocks.cpu_1x() % MAX_MDC > 0 {
mdc_clk_div += 1;
}
GEM::regs().net_cfg.write(
regs::NetCfg::zeroed()
@ -542,10 +545,10 @@ impl<GEM: Gem> EthInner<GEM> {
.speed(true)
.no_broadcast(false)
.multi_hash_en(true)
// Promiscuous mode (TODO?)
.copy_all(true)
.rx_1536_byte_frames(true)
// Remove 4-byte Frame CheckSum
.fcs_remove(true)
.dis_cp_pause_frame(true)
// RX checksum offload
.rx_chksum_offld_en(true)
// One of the slower speeds
@ -553,22 +556,23 @@ impl<GEM: Gem> EthInner<GEM> {
);
let macaddr_msbs =
(u16::from(macaddr[0]) << 8) |
u16::from(macaddr[1]);
(u16::from(macaddr[5]) << 8) |
u16::from(macaddr[4]);
let macaddr_lsbs =
(u32::from(macaddr[2]) << 24) |
(u32::from(macaddr[3]) << 16) |
(u32::from(macaddr[4]) << 8) |
u32::from(macaddr[5]);
GEM::regs().spec_addr1_top.write(
regs::SpecAddrTop::zeroed()
.addr_msbs(macaddr_msbs)
);
(u32::from(macaddr[3]) << 24) |
(u32::from(macaddr[2]) << 16) |
(u32::from(macaddr[1]) << 8) |
u32::from(macaddr[0]);
// writing to bot would disable the specific address
GEM::regs().spec_addr1_bot.write(
regs::SpecAddrBot::zeroed()
.addr_lsbs(macaddr_lsbs)
);
// writing to top would enable it again
GEM::regs().spec_addr1_top.write(
regs::SpecAddrTop::zeroed()
.addr_msbs(macaddr_msbs)
);
GEM::regs().dma_cfg.write(
regs::DmaCfg::zeroed()

18
libboard_zynq/src/eth/rx.rs
View File

@ -108,6 +108,20 @@ impl DescList {
if entry.word0.read().used() {
let word1 = entry.word1.read();
let len = word1.frame_length_lsbs().into();
let padding = {
let diff = len % 0x20;
if diff == 0 {
0
} else {
0x20 - diff
}
};
unsafe {
// invalidate the buffer
// we cannot do it in the drop function, as L2 cache data prefetch would prefetch
// the data, and there is no way for us to prevent that unless changing MMU table.
dci_slice(&mut self.buffers[self.next][0..len + padding]);
}
let buffer = &mut self.buffers[self.next][0..len];
self.next += 1;
@ -135,10 +149,6 @@ pub struct PktRef<'a> {
impl<'a> Drop for PktRef<'a> {
fn drop(&mut self) {
// Flush buffer from cache, to be filled by the peripheral
// before next read
dcci_slice(self.buffer);
self.entry.word0.modify(|_, w| w.used(false));
dmb();
}