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Map the physical buffer into virtual address

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This commit is contained in:
Baptiste Wicht 2016-07-05 16:33:48 +02:00
parent aeb67c63d9
commit 1750f4569f
1 changed files with 12 additions and 0 deletions
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12
kernel/src/rtl8139.cpp
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@ -9,7 +9,9 @@
#include "logging.hpp"
#include "kernel_utils.hpp"
#include "physical_allocator.hpp"
#include "virtual_allocator.hpp"
#include "interrupts.hpp"
#include "paging.hpp"
#define MAC0 0x00
#define MAC4 0x04
@ -30,6 +32,8 @@ namespace {
struct rtl8139_t {
uint32_t iobase;
uint64_t phys_buffer_rx;
uint64_t buffer_rx;
};
//TODO Add a way so that the interrupt handler is able to pass a void ptr to the handler
@ -81,6 +85,14 @@ void rtl8139::init_driver(network::interface_descriptor& interface, pci::device_
auto buffer_rx_phys = physical_allocator::allocate(3);
out_dword(iobase + RBSTART, buffer_rx_phys);
auto buffer_rx_virt = virtual_allocator::allocate(3);
if(!paging::map_pages(buffer_rx_virt, buffer_rx_phys, 3)){
logging::logf(logging::log_level::ERROR, "rtl8139: I/O Unable to map %u into %u\n", buffer_rx_phys, buffer_rx_virt);
}
desc->phys_buffer_rx = buffer_rx_phys;
desc->buffer_rx = buffer_rx_virt;
// 6. Register IRQ handler
auto irq = pci::read_config_dword(pci_device.bus, pci_device.device, pci_device.function, 0x3c) & 0xFF;