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Added PXE bus driver (with support only for using PXE structures found

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lying about in memory, not for loading from ROM), and UNDI net driver.
This commit is contained in:
Michael Brown
2007-01-04 19:38:34 +00:00
parent e28db95de6
commit 7e07dfb2f4
3 changed files with 736 additions and 28 deletions
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74
src/include/pxe.h
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@@ -3,6 +3,7 @@
#include "pxe_types.h"
#include "pxe_api.h"
#include <gpxe/device.h>
/* Parameter block for pxenv_unknown() */
struct s_PXENV_UNKNOWN {
@@ -61,38 +62,55 @@ union u_PXENV_ANY {
typedef union u_PXENV_ANY PXENV_ANY_t;
/* PXE stack status indicator. See pxe_export.c for further
* explanation.
/** A PXE device */
struct pxe_device {
/** Generic device */
struct device dev;
/** Driver-private data
*
* Use pxe_set_drvdata() and pxe_get_drvdata() to access this
* field.
*/
void *priv;
/** PXENV+ structure address */
SEGOFF16_t pxenv;
/** !PXE structure address */
SEGOFF16_t ppxe;
/** Entry point */
SEGOFF16_t entry;
/** MAC address */
MAC_ADDR_t hwaddr;
/** Assigned IRQ number */
UINT16_t irq;
/** ROM address */
SEGSEL_t rom;
};
/**
* Set PXE driver-private data
*
* @v pxe PXE device
* @v priv Private data
*/
typedef enum {
CAN_UNLOAD = 0,
MIDWAY,
READY
} pxe_stack_state_t;
static inline void pxe_set_drvdata ( struct pxe_device *pxe, void *priv ) {
pxe->priv = priv;
}
#define ENSURE_CAN_UNLOAD(structure) if ( ! ensure_pxe_state(CAN_UNLOAD) ) { \
structure->Status = PXENV_STATUS_UNDI_INVALID_STATE; \
return PXENV_EXIT_FAILURE; }
#define ENSURE_MIDWAY(structure) if ( ! ensure_pxe_state(MIDWAY) ) { \
structure->Status = PXENV_STATUS_UNDI_INVALID_STATE; \
return PXENV_EXIT_FAILURE; }
#define ENSURE_READY(structure) if ( ! ensure_pxe_state(READY) ) { \
structure->Status = PXENV_STATUS_UNDI_INVALID_STATE; \
return PXENV_EXIT_FAILURE; }
/* Data structures installed as part of a PXE stack. Architectures
* will have extra information to append to the end of this.
/**
* Get PXE driver-private data
*
* @v pxe PXE device
* @ret priv Private data
*/
#define PXE_TFTP_MAGIC_COOKIE ( ( 'P'<<24 ) | ( 'x'<<16 ) | ( 'T'<<8 ) | 'f' )
typedef struct pxe_stack {
struct s_PXE pxe __attribute__ ((aligned(16)));
struct s_PXENV pxenv __attribute__ ((aligned(16)));
pxe_stack_state_t state;
} pxe_stack_t;
static inline void * pxe_get_drvdata ( struct pxe_device *pxe ) {
return pxe->priv;
}
extern int ensure_pxe_state ( pxe_stack_state_t wanted );
extern pxe_stack_t *pxe_stack;
extern int pxe_call ( struct pxe_device *pxe, unsigned int function,
void *params, size_t params_len );
extern int undi_probe ( struct pxe_device *pxe );
extern void undi_remove ( struct pxe_device *pxe );
extern struct net_device *pxe_netdev;