PXENV_START_UNDI
[PXE Preboot API]

START UNDI. More...

Data Structures
struct	s_PXENV_START_UNDI
	Parameter block for pxenv_start_undi(). More...
Defines
#define	PXENV_START_UNDI   0x0000
	PXE API function code for pxenv_start_undi().
Typedefs
typedef struct s_PXENV_START_UNDI	PXENV_START_UNDI_t
Functions
PXENV_EXIT_t	pxenv_start_undi (struct s_PXENV_START_UNDI *start_undi)

---

Detailed Description

START UNDI.

---

Define Documentation

#define PXENV_START_UNDI   0x0000

PXE API function code for pxenv_start_undi().

Definition at line 439 of file pxe_api.h.

Referenced by pxe_api_call(), pxeparent_function_name(), and undinet_probe().

---

Typedef Documentation

typedef struct s_PXENV_START_UNDI PXENV_START_UNDI_t

Definition at line 497 of file pxe_api.h.

---

Function Documentation

PXENV_EXIT_t pxenv_start_undi

(

struct s_PXENV_START_UNDI *

start_undi

)

Definition at line 243 of file pxe_preboot.c.

References s_PXENV_START_UNDI::AX, BUS_TYPE_ISAPNP, BUS_TYPE_PCI, s_PXENV_START_UNDI::BX, DBG, s_PXENV_START_UNDI::DX, find_netdev_by_location(), ISAPNP_CSN_MAX, ISAPNP_CSN_MIN, isapnp_read_port, ISAPNP_READ_PORT_MAX, ISAPNP_READ_PORT_MIN, net_device::name, netdev, pxe_activate(), PXENV_EXIT_FAILURE, PXENV_EXIT_SUCCESS, PXENV_STATUS_SUCCESS, PXENV_STATUS_UNDI_CANNOT_INITIALIZE_NIC, startup(), and s_PXENV_START_UNDI::Status.

Referenced by pxe_api_call().

                                                                        {
        unsigned int bus_type;
        unsigned int location;
        struct net_device *netdev;

        DBG ( "PXENV_START_UNDI %04x:%04x:%04x",
              start_undi->AX, start_undi->BX, start_undi->DX );

        /* Determine bus type and location.  Use a heuristic to decide
         * whether we are PCI or ISAPnP
         */
        if ( ( start_undi->DX >= ISAPNP_READ_PORT_MIN ) &&
             ( start_undi->DX <= ISAPNP_READ_PORT_MAX ) &&
             ( start_undi->BX >= ISAPNP_CSN_MIN ) &&
             ( start_undi->BX <= ISAPNP_CSN_MAX ) ) {
                bus_type = BUS_TYPE_ISAPNP;
                location = start_undi->BX;
                /* Record ISAPnP read port for use by isapnp.c */
                isapnp_read_port = start_undi->DX;
        } else {
                bus_type = BUS_TYPE_PCI;
                location = start_undi->AX;
        }

        /* Probe for devices, etc. */
        startup();

        /* Look for a matching net device */
        netdev = find_netdev_by_location ( bus_type, location );
        if ( ! netdev ) {
                DBG ( " no net device found" );
                start_undi->Status = PXENV_STATUS_UNDI_CANNOT_INITIALIZE_NIC;
                return PXENV_EXIT_FAILURE;
        }
        DBG ( " using netdev %s", netdev->name );

        /* Activate PXE */
        pxe_activate ( netdev );

        start_undi->Status = PXENV_STATUS_SUCCESS;
        return PXENV_EXIT_SUCCESS;
}