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x86: Add driver for Intel Quark X1000 built-in Ethernet

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This patch adds a simple, space-efficient driver for the Ethernet
interface built into the Intel Quark X1000.  It only allocates a
single packet descriptor for each of the transmit and receive
directions, computes checksums on the CPU, and enables
store-and-forward mode for both transmit and receive directions.
This commit is contained in:
Michael LeMay 2015-07-07 16:07:00 -07:00 • committed by Jesus Sanchez-Palencia
parent ba09b47d65
commit abeed93da5
4 changed files with 414 additions and 2 deletions
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2
cpu/x86/drivers/legacy_pc/pci.c
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@ -236,7 +236,7 @@ pci_pirq_set_irq(PIRQ pirq, uint8_t irq, uint8_t route_to_legacy)
void
pci_init(pci_driver_t *c_this, pci_config_addr_t pci_addr, uintptr_t meta)
{
/* The reg_off (BAR) value is masked to clear non-address bits. */
/* The BAR value is masked to clear non-address bits. */
c_this->mmio = pci_config_read(pci_addr) & ~0xFFF;
c_this->meta = meta;
}