diff options
Diffstat (limited to 'kernel/drivers/rtl8139.c')
| -rw-r--r-- | kernel/drivers/rtl8139.c | 177 |
1 files changed, 0 insertions, 177 deletions
diff --git a/kernel/drivers/rtl8139.c b/kernel/drivers/rtl8139.c deleted file mode 100644 index 8e7bc88..0000000 --- a/kernel/drivers/rtl8139.c +++ /dev/null @@ -1,177 +0,0 @@ -// MIT License, Copyright (c) 2020 Marvin Borner -// Uses parts of the ToAruOS Project, released under the terms of the NCSA -// Copyright (C) 2011-2018 K. Lange - -#include <def.h> -#include <drivers/cpu.h> -#include <drivers/interrupts.h> -#include <drivers/pci.h> -#include <drivers/rtl8139.h> -#include <mem.h> -#include <net.h> -#include <print.h> - -static int rtl_irq = 0; -static u8 mac[6] = { 0 }; -static u8 *last_packet = NULL; -static u8 *rtl_rx_buffer = NULL; -static u32 rtl_device_pci = 0; -static u32 rtl_iobase = 0; -static u32 cur_rx = 0; - -u8 *rtl8139_get_mac(void) -{ - if (!rtl_device_pci) - return NULL; - - return mac; -} - -static void rtl8139_receive_packet(void) -{ - while ((inb(rtl_iobase + RTL_PORT_CMD) & 0x01) == 0) { - int offset = cur_rx % 0x2000; - - u32 *buf_start = (u32 *)((u32)rtl_rx_buffer + offset); - u32 rx_status = buf_start[0]; - u32 rx_size = rx_status >> 16; - - if (rx_status & (0x0020 | 0x0010 | 0x0004 | 0x0002)) { - print("RX Error\n"); - } else { - u8 *buf_8 = (u8 *)&(buf_start[1]); - - last_packet = malloc(rx_size); - - u32 packet_end = (u32)buf_8 + rx_size; - if (packet_end > (u32)rtl_rx_buffer + 0x2000) { - u32 s = ((u32)rtl_rx_buffer + 0x2000) - (u32)buf_8; - memcpy(last_packet, buf_8, s); - memcpy((void *)((u32)last_packet + s), rtl_rx_buffer, rx_size - s); - } else { - memcpy(last_packet, buf_8, rx_size); - } - - u16 *t = (u16 *)(rtl_rx_buffer + cur_rx); - ethernet_handle_packet((struct ethernet_packet *)last_packet, *(t + 1)); - } - - cur_rx = (cur_rx + rx_size + 4 + 3) & ~3; - outw(rtl_iobase + RTL_PORT_RXPTR, cur_rx - 16); - } -} - -static u8 tsad_array[4] = { 0x20, 0x24, 0x28, 0x2C }; -static u8 tsd_array[4] = { 0x10, 0x14, 0x18, 0x1C }; -static u8 tx_current = 0; -void rtl8139_send_packet(void *data, u32 len) -{ - if (!rtl_device_pci) - return; - - outl(rtl_iobase + tsad_array[tx_current], (u32)data); - outl(rtl_iobase + tsd_array[tx_current++], len); - if (tx_current > 3) - tx_current = 0; -} - -static void rtl8139_find(u32 device, u16 vendor_id, u16 device_id, void *extra) -{ - if ((vendor_id == 0x10ec) && (device_id == 0x8139)) - *((u32 *)extra) = device; -} - -static void rtl8139_irq_handler(struct regs *r) -{ - UNUSED(r); - u16 status = inw(rtl_iobase + RTL_PORT_ISR); - if (!status) - return; - outw(rtl_iobase + RTL_PORT_ISR, status); - - if (status & 0x01 || status & 0x02) - rtl8139_receive_packet(); -} - -static void rtl8139_init(void) -{ - if (!rtl_device_pci) - return; - - u16 command_reg = (u16)pci_read_field(rtl_device_pci, PCI_COMMAND, 4); - if ((command_reg & (1 << 2)) == 0) { - command_reg |= (1 << 2); - pci_write_field(rtl_device_pci, PCI_COMMAND, command_reg); - } - - rtl_irq = pci_get_interrupt(rtl_device_pci); - irq_install_handler(rtl_irq, rtl8139_irq_handler); - - u32 rtl_bar0 = pci_read_field(rtl_device_pci, PCI_BAR0, 4); - /* u32 rtl_bar1 = pci_read_field(rtl_device_pci, PCI_BAR1, 4); */ - rtl_iobase = 0; - - if (rtl_bar0 & 0x00000001) - rtl_iobase = rtl_bar0 & 0xFFFFFFFC; - - // Get mac address - for (int i = 0; i < 6; ++i) - mac[i] = inb(rtl_iobase + RTL_PORT_MAC + i); - printf("Mac address: %x:%x:%x:%x:%x:%x\n", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); - - // Activate - outb(rtl_iobase + RTL_PORT_CONFIG, 0x0); - - // Reset - outb((u16)(rtl_iobase + RTL_PORT_CMD), 0x10); - while ((inb(rtl_iobase + RTL_PORT_CMD) & 0x10) != 0) - ; - - // Set receive buffer - rtl_rx_buffer = (u8 *)malloc(0x3000); - memset(rtl_rx_buffer, 0, 0x3000); - outl(rtl_iobase + RTL_PORT_RBSTART, (u32)rtl_rx_buffer); - - // Enable IRQs - outw(rtl_iobase + RTL_PORT_IMR, 0x8000 | /* PCI error */ - 0x4000 | /* PCS timeout */ - 0x40 | /* Rx FIFO over */ - 0x20 | /* Rx underrun */ - 0x10 | /* Rx overflow */ - 0x08 | /* Tx error */ - 0x04 | /* Tx okay */ - 0x02 | /* Rx error */ - 0x01 /* Rx okay */ - ); - - // Configure transmit - outl(rtl_iobase + RTL_PORT_TCR, 0); - - // Configure receive - outl(rtl_iobase + RTL_PORT_RCR, (0) | /* 8K receive */ - 0x08 | /* broadcast */ - 0x01 /* all physical */ - ); - - // Enable receive and transmit - outb(rtl_iobase + RTL_PORT_CMD, 0x08 | 0x04); - - // Reset rx statistics - outl(rtl_iobase + RTL_PORT_RXMISS, 0); -} - -int rtl8139_installed(void) -{ - return rtl_device_pci != 0; -} - -int rtl8139_install(void) -{ - pci_scan(&rtl8139_find, -1, &rtl_device_pci); - - if (rtl_device_pci) { - print("Found rtl8139 card\n"); - rtl8139_init(); - } - return rtl_device_pci; -} |