diff options
Diffstat (limited to 'src/kernel/net/rtl8139.c')
| -rw-r--r-- | src/kernel/net/rtl8139.c | 147 |
1 files changed, 75 insertions, 72 deletions
diff --git a/src/kernel/net/rtl8139.c b/src/kernel/net/rtl8139.c index 6e682b5..4da545e 100644 --- a/src/kernel/net/rtl8139.c +++ b/src/kernel/net/rtl8139.c @@ -13,88 +13,91 @@ uint32_t rtl_device_pci = 0x00000000; void find_rtl(uint32_t device, uint16_t vendor_id, uint16_t device_id, void *extra) { - if ((vendor_id == 0x10ec) && (device_id == 0x8139)) { - *((uint32_t *) extra) = device; - } + if ((vendor_id == 0x10ec) && (device_id == 0x8139)) { + *((uint32_t *)extra) = device; + } } void rtl8139_irq_handler(struct regs *r) { - serial_printf("RTL INT!"); - uint16_t status = inw((uint16_t) (rtl_iobase + 0x3E)); - if (!status) return; - outw((uint16_t) (rtl_iobase + 0x3E), status); - - if (status & 0x01 || status & 0x02) { - while ((inw((uint16_t) (rtl_iobase + 0x37)) & 0x01) == 0) { - serial_printf("RECEIVE"); - // RECEIVE - } - } + serial_printf("RTL INT!"); + uint16_t status = inw((uint16_t)(rtl_iobase + 0x3E)); + if (!status) + return; + outw((uint16_t)(rtl_iobase + 0x3E), status); + + if (status & 0x01 || status & 0x02) { + while ((inw((uint16_t)(rtl_iobase + 0x37)) & 0x01) == 0) { + serial_printf("RECEIVE"); + // RECEIVE + } + } } int rtl8139_init(void) { - if (rtl_device_pci) { - uint16_t command_reg = (uint16_t) pci_read_field(rtl_device_pci, PCI_COMMAND, 4); - - if (command_reg & (1 << 2)) { - } else { - command_reg |= (1 << 2); - pci_write_field(rtl_device_pci, PCI_COMMAND, 4, command_reg); - } - - rtl_irq = pci_get_interrupt(rtl_device_pci); - irq_install_handler(rtl_irq, rtl8139_irq_handler); - - uint32_t rtl_bar0 = pci_read_field(rtl_device_pci, PCI_BAR0, 4); - // uint32_t rtl_bar1 = pci_read_field(rtl_device_pci, PCI_BAR1, 4); - - rtl_iobase = 0x00000000; - - if (rtl_bar0 & 0x00000001) - rtl_iobase = rtl_bar0 & 0xFFFFFFFC; - else - warn("RTL8139 should be using an I/O BAR!"); - - // Get mac address - for (int i = 0; i < 6; ++i) - mac[i] = inb((uint16_t) (rtl_iobase + 0x00 + i)); - debug("Mac address: %2x:%2x:%2x:%2x:%2x:%2x", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); - - // Activate (turn on) - outb((uint16_t) (rtl_iobase + 0x52), 0x0); - - // Reset - outb((uint16_t) (rtl_iobase + 0x37), 0x10); - while ((inb((uint16_t) (rtl_iobase + 0x37)) & 0x10) != 0) {} - - // Set receive buffer - rtl_rx_buffer = (uint8_t *) kmalloc(8192 + 16); - outl((uint16_t) (rtl_iobase + 0x30), (uintptr_t) rtl_rx_buffer); - - // Enable ISR - outw((uint16_t) (rtl_iobase + 0x3C), 0x0005); - - // Accept packets - outl((uint16_t) (rtl_iobase + 0x44), 0xf | (1 << 7)); - - // Enable receive and transmitter - outb((uint16_t) (rtl_iobase + 0x37), 0x0C); - } else { - return -1; - } - return 0; + if (rtl_device_pci) { + uint16_t command_reg = (uint16_t)pci_read_field(rtl_device_pci, PCI_COMMAND, 4); + + if (command_reg & (1 << 2)) { + } else { + command_reg |= (1 << 2); + pci_write_field(rtl_device_pci, PCI_COMMAND, 4, command_reg); + } + + rtl_irq = pci_get_interrupt(rtl_device_pci); + irq_install_handler(rtl_irq, rtl8139_irq_handler); + + uint32_t rtl_bar0 = pci_read_field(rtl_device_pci, PCI_BAR0, 4); + // uint32_t rtl_bar1 = pci_read_field(rtl_device_pci, PCI_BAR1, 4); + + rtl_iobase = 0x00000000; + + if (rtl_bar0 & 0x00000001) + rtl_iobase = rtl_bar0 & 0xFFFFFFFC; + else + warn("RTL8139 should be using an I/O BAR!"); + + // Get mac address + for (int i = 0; i < 6; ++i) + mac[i] = inb((uint16_t)(rtl_iobase + 0x00 + i)); + debug("Mac address: %2x:%2x:%2x:%2x:%2x:%2x", mac[0], mac[1], mac[2], mac[3], + mac[4], mac[5]); + + // Activate (turn on) + outb((uint16_t)(rtl_iobase + 0x52), 0x0); + + // Reset + outb((uint16_t)(rtl_iobase + 0x37), 0x10); + while ((inb((uint16_t)(rtl_iobase + 0x37)) & 0x10) != 0) { + } + + // Set receive buffer + rtl_rx_buffer = (uint8_t *)kmalloc(8192 + 16); + outl((uint16_t)(rtl_iobase + 0x30), (uintptr_t)rtl_rx_buffer); + + // Enable ISR + outw((uint16_t)(rtl_iobase + 0x3C), 0x0005); + + // Accept packets + outl((uint16_t)(rtl_iobase + 0x44), 0xf | (1 << 7)); + + // Enable receive and transmitter + outb((uint16_t)(rtl_iobase + 0x37), 0x0C); + } else { + return -1; + } + return 0; } void rtl8139_install() { - pci_scan(&find_rtl, -1, &rtl_device_pci); - if (!rtl_device_pci) { - warn("No rtl8139 network card found"); - return; - } - - if (rtl8139_init() == 0) - info("Installed rtl8139 network driver"); + pci_scan(&find_rtl, -1, &rtl_device_pci); + if (!rtl_device_pci) { + warn("No rtl8139 network card found"); + return; + } + + if (rtl8139_init() == 0) + info("Installed rtl8139 network driver"); }
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