Aren/toaruos
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

e1000: Fix incorrect mapping of user-writable ranges for rx/tx buffers

Browse Source
This commit is contained in:
K. Lange 2022-01-11 13:53:38 +09:00
parent 19508075e4
commit 511b0787bf
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
modules/e1000.c
View File

@ -400,14 +400,14 @@ static void e1000_init(struct e1000_nic * nic) {
for (int i = 0; i < E1000_NUM_RX_DESC; ++i) {
nic->rx[i].addr = mmu_allocate_a_frame() << 12;
nic->rx_virt[i] = mmu_map_mmio_region(nic->rx[i].addr, 4096);
mmu_frame_map_address(mmu_get_page((uintptr_t)nic->rx_virt[i],0),MMU_FLAG_WRITABLE|MMU_FLAG_WC,nic->rx[i].addr);
mmu_frame_map_address(mmu_get_page((uintptr_t)nic->rx_virt[i],0),MMU_FLAG_KERNEL|MMU_FLAG_WRITABLE|MMU_FLAG_WC,nic->rx[i].addr);
nic->rx[i].status = 0;
}
for (int i = 0; i < E1000_NUM_TX_DESC; ++i) {
nic->tx[i].addr = mmu_allocate_a_frame() << 12;
nic->tx_virt[i] = mmu_map_mmio_region(nic->tx[i].addr, 4096);
mmu_frame_allocate(mmu_get_page((uintptr_t)nic->tx_virt[i],0),MMU_FLAG_WRITABLE|MMU_FLAG_WC);
mmu_frame_allocate(mmu_get_page((uintptr_t)nic->tx_virt[i],0),MMU_FLAG_KERNEL|MMU_FLAG_WRITABLE|MMU_FLAG_WC);
memset(nic->tx_virt[i], 0, 4096);
nic->tx[i].status = 0;
nic->tx[i].cmd = (1 << 0);