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RTL8139: Unbreak RealTek Ethernet driver after paging changes

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This commit is contained in:
Andreas Kling 2020-01-18 09:52:40 +01:00
parent 94ca55cefd
commit 22d4920cef
1 changed files with 5 additions and 6 deletions
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11
Kernel/Net/RTL8139NetworkAdapter.cpp
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@ -157,17 +157,16 @@ RTL8139NetworkAdapter::RTL8139NetworkAdapter(PCI::Address pci_address, u8 irq)
// we add space to account for overhang from the last packet - the rtl8139
// can optionally guarantee that packets will be contiguous by
// purposefully overrunning the rx buffer
m_rx_buffer_addr = (u32)kmalloc_aligned(RX_BUFFER_SIZE + PACKET_SIZE_MAX, 16);
m_rx_buffer_addr = (u32)virtual_to_low_physical(kmalloc_aligned(RX_BUFFER_SIZE + PACKET_SIZE_MAX, 16));
kprintf("RTL8139: RX buffer: P%p\n", m_rx_buffer_addr);
auto tx_buffer_addr = (u32)kmalloc_aligned(TX_BUFFER_SIZE * 4, 16);
auto tx_buffer_addr = (u32)virtual_to_low_physical(kmalloc_aligned(TX_BUFFER_SIZE * 4, 16));
for (int i = 0; i < RTL8139_TX_BUFFER_COUNT; i++) {
m_tx_buffer_addr[i] = tx_buffer_addr + TX_BUFFER_SIZE * i;
kprintf("RTL8139: TX buffer %d: P%p\n", i, m_tx_buffer_addr[i]);
}
m_packet_buffer = (u32)kmalloc(PACKET_SIZE_MAX);
kprintf("RTL8139: Packet buffer: P%p\n", m_packet_buffer);
reset();
@ -324,8 +323,8 @@ void RTL8139NetworkAdapter::send_raw(const u8* data, int length)
m_tx_next_buffer = (hw_buffer + 1) % 4;
}
memcpy((void*)(m_tx_buffer_addr[hw_buffer]), data, length);
memset((void*)(m_tx_buffer_addr[hw_buffer] + length), 0, TX_BUFFER_SIZE - length);
memcpy((void*)low_physical_to_virtual(m_tx_buffer_addr[hw_buffer]), data, length);
memset((void*)(low_physical_to_virtual(m_tx_buffer_addr[hw_buffer]) + length), 0, TX_BUFFER_SIZE - length);
// the rtl8139 will not actually emit packets onto the network if they're
// smaller than 64 bytes. the rtl8139 adds a checksum to the end of each
@ -343,7 +342,7 @@ void RTL8139NetworkAdapter::send_raw(const u8* data, int length)
void RTL8139NetworkAdapter::receive()
{
auto* start_of_packet = (const u8*)(m_rx_buffer_addr + m_rx_buffer_offset);
auto* start_of_packet = (const u8*)(low_physical_to_virtual(m_rx_buffer_addr) + m_rx_buffer_offset);
u16 status = *(const u16*)(start_of_packet + 0);
u16 length = *(const u16*)(start_of_packet + 2);