nic.h

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/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

FILE_LICENCE ( GPL2_OR_LATER );

#ifndef NIC_H
#define NIC_H

#include <stdint.h>
#include <string.h>
#include <stdio.h>
#include <byteswap.h>
#include <ipxe/pci.h>
#include <ipxe/isapnp.h>
#include <ipxe/isa.h>
#include <ipxe/eisa.h>
#include <ipxe/mca.h>
#include <ipxe/io.h>

typedef enum {
        DISABLE = 0,
        ENABLE,
        FORCE
} irq_action_t;

typedef enum duplex {
        HALF_DUPLEX = 1,
        FULL_DUPLEX
} duplex_t;

/*
 *      Structure returned from eth_probe and passed to other driver
 *      functions.
 */
struct nic {
        struct nic_operations   *nic_op;
        int                     flags;  /* driver specific flags */
        unsigned char           *node_addr;
        unsigned char           *packet;
        unsigned int            packetlen;
        unsigned int            ioaddr;
        unsigned char           irqno;
        unsigned int            mbps;
        duplex_t                duplex;
        void                    *priv_data;     /* driver private data */
        void                    *fake_bss;
        size_t                  fake_bss_len;
};

#define NIC_FAKE_BSS_PTR( type ) ( ( type * ) legacy_nic.fake_bss )
#define NIC_FAKE_BSS( type ) ( * NIC_FAKE_BSS_PTR ( type ) )
extern struct {} no_fake_bss;

struct nic_operations {
        int ( *connect ) ( struct nic * );
        int ( *poll ) ( struct nic *, int retrieve );
        void ( *transmit ) ( struct nic *, const char *,
                             unsigned int, unsigned int, const char * );
        void ( *irq ) ( struct nic *, irq_action_t );
};

extern struct nic legacy_nic;

static inline int eth_poll ( int retrieve ) {
        struct nic *nic = &legacy_nic;
        return nic->nic_op->poll ( nic, retrieve );
}

static inline void eth_transmit ( const char *dest, unsigned int type,
                                  unsigned int size, const void *packet ) {
        struct nic *nic = &legacy_nic;
        nic->nic_op->transmit ( nic, dest, type, size, packet );
}

/*
 * Function prototypes
 *
 */
extern int dummy_connect ( struct nic *nic );
extern void dummy_irq ( struct nic *nic, irq_action_t irq_action );
extern int legacy_probe ( void *hwdev,
                          void ( * set_drvdata ) ( void *hwdev, void *priv ),
                          struct device *dev,
                          int ( * probe ) ( struct nic *nic, void *hwdev ),
                          void ( * disable ) ( struct nic *nic, void *hwdev ),
                          size_t fake_bss_len );
void legacy_remove ( void *hwdev,
                     void * ( * get_drvdata ) ( void *hwdev ),
                     void ( * disable ) ( struct nic *nic, void *hwdev ) );

#define PCI_DRIVER(_name,_ids,_class)                                     \
        static inline int                                                 \
        _name ## _pci_legacy_probe ( struct pci_device *pci );            \
        static inline void                                                \
        _name ## _pci_legacy_remove ( struct pci_device *pci );           \
        struct pci_driver _name __pci_driver = {                          \
                .ids = _ids,                                              \
                .id_count = sizeof ( _ids ) / sizeof ( _ids[0] ),         \
                .probe = _name ## _pci_legacy_probe,                      \
                .remove = _name ## _pci_legacy_remove,                    \
        };                                                                \
        REQUIRE_OBJECT ( pci );

static inline void legacy_pci_set_drvdata ( void *hwdev, void *priv ) {
        pci_set_drvdata ( hwdev, priv );
}
static inline void * legacy_pci_get_drvdata ( void *hwdev ) {
        return pci_get_drvdata ( hwdev );
}

#define ISAPNP_DRIVER(_name,_ids)                                         \
        static inline int                                                 \
        _name ## _isapnp_legacy_probe ( struct isapnp_device *isapnp,     \
                                        const struct isapnp_device_id *id ); \
        static inline void                                                \
        _name ## _isapnp_legacy_remove ( struct isapnp_device *isapnp );  \
        struct isapnp_driver _name __isapnp_driver = {                    \
                .ids = _ids,                                              \
                .id_count = sizeof ( _ids ) / sizeof ( _ids[0] ),         \
                .probe = _name ## _isapnp_legacy_probe,                   \
                .remove = _name ## _isapnp_legacy_remove,                 \
        };                                                                \
        REQUIRE_OBJECT ( isapnp );

static inline void legacy_isapnp_set_drvdata ( void *hwdev, void *priv ) {
        isapnp_set_drvdata ( hwdev, priv );
}
static inline void * legacy_isapnp_get_drvdata ( void *hwdev ) {
        return isapnp_get_drvdata ( hwdev );
}

#define EISA_DRIVER(_name,_ids)                                           \
        static inline int                                                 \
        _name ## _eisa_legacy_probe ( struct eisa_device *eisa,           \
                                      const struct eisa_device_id *id );  \
        static inline void                                                \
        _name ## _eisa_legacy_remove ( struct eisa_device *eisa );        \
        struct eisa_driver _name __eisa_driver = {                        \
                .ids = _ids,                                              \
                .id_count = sizeof ( _ids ) / sizeof ( _ids[0] ),         \
                .probe = _name ## _eisa_legacy_probe,                     \
                .remove = _name ## _eisa_legacy_remove,                   \
        };                                                                \
        REQUIRE_OBJECT ( eisa );

static inline void legacy_eisa_set_drvdata ( void *hwdev, void *priv ) {
        eisa_set_drvdata ( hwdev, priv );
}
static inline void * legacy_eisa_get_drvdata ( void *hwdev ) {
        return eisa_get_drvdata ( hwdev );
}

#define MCA_DRIVER(_name,_ids)                                            \
        static inline int                                                 \
        _name ## _mca_legacy_probe ( struct mca_device *mca,              \
                                     const struct mca_device_id *id );    \
        static inline void                                                \
        _name ## _mca_legacy_remove ( struct mca_device *mca );           \
        struct mca_driver _name __mca_driver = {                          \
                .ids = _ids,                                              \
                .id_count = sizeof ( _ids ) / sizeof ( _ids[0] ),         \
                .probe = _name ## _mca_legacy_probe,                      \
                .remove = _name ## _mca_legacy_remove,                    \
        };                                                                \
        REQUIRE_OBJECT ( mca );

static inline void legacy_mca_set_drvdata ( void *hwdev, void *priv ) {
        mca_set_drvdata ( hwdev, priv );
}
static inline void * legacy_mca_get_drvdata ( void *hwdev ) {
        return mca_get_drvdata ( hwdev );
}

#define ISA_DRIVER(_name,_probe_addrs,_probe_addr,_vendor_id,_prod_id)    \
        static inline int                                                 \
        _name ## _isa_legacy_probe ( struct isa_device *isa );            \
        static inline int                                                 \
        _name ## _isa_legacy_probe_at_addr ( struct isa_device *isa ) {   \
                if ( ! _probe_addr ( isa->ioaddr ) )                      \
                        return -ENODEV;                                   \
                return _name ## _isa_legacy_probe ( isa );                \
        }                                                                 \
        static inline void                                                \
        _name ## _isa_legacy_remove ( struct isa_device *isa );           \
        static const char _name ## _text[];                               \
        struct isa_driver _name __isa_driver = {                          \
                .name = _name ## _text,                                   \
                .probe_addrs = _probe_addrs,                              \
                .addr_count = ( sizeof ( _probe_addrs ) /                 \
                                sizeof ( _probe_addrs[0] ) ),             \
                .vendor_id = _vendor_id,                                  \
                .prod_id = _prod_id,                                      \
                .probe = _name ## _isa_legacy_probe_at_addr,              \
                .remove = _name ## _isa_legacy_remove,                    \
        };                                                                \
        REQUIRE_OBJECT ( isa );

static inline void legacy_isa_set_drvdata ( void *hwdev, void *priv ) {
        isa_set_drvdata ( hwdev, priv );
}
static inline void * legacy_isa_get_drvdata ( void *hwdev ) {
        return isa_get_drvdata ( hwdev );
}

#undef DRIVER
#define DRIVER( _name_text, _unused2, _unused3, _name, _probe, _disable,  \
                _fake_bss )                                               \
        static __attribute__ (( unused )) const char                      \
        _name ## _text[] = _name_text;                                    \
        static inline int                                                 \
        _name ## _probe ( struct nic *nic, void *hwdev ) {                \
                return _probe ( nic, hwdev );                             \
        }                                                                 \
        static inline void                                                \
        _name ## _disable ( struct nic *nic, void *hwdev ) {              \
                _disable ( nic, hwdev );                                  \
        }                                                                 \
        static inline int                                                 \
        _name ## _pci_legacy_probe ( struct pci_device *pci ) {           \
                return legacy_probe ( pci, legacy_pci_set_drvdata,        \
                                      &pci->dev, _name ## _probe,         \
                                      _name ## _disable,                  \
                                      sizeof ( _fake_bss ) );             \
        }                                                                 \
        static inline void                                                \
        _name ## _pci_legacy_remove ( struct pci_device *pci ) {          \
                return legacy_remove ( pci, legacy_pci_get_drvdata,       \
                                       _name ## _disable );               \
        }                                                                 \
        static inline int                                                 \
        _name ## _isapnp_legacy_probe ( struct isapnp_device *isapnp,     \
                         const struct isapnp_device_id *id __unused ) {   \
                return legacy_probe ( isapnp, legacy_isapnp_set_drvdata,  \
                                      &isapnp->dev, _name ## _probe,      \
                                      _name ## _disable,                  \
                                      sizeof ( _fake_bss ) );             \
        }                                                                 \
        static inline void                                                \
        _name ## _isapnp_legacy_remove ( struct isapnp_device *isapnp ) { \
                return legacy_remove ( isapnp, legacy_isapnp_get_drvdata, \
                                       _name ## _disable );               \
        }                                                                 \
        static inline int                                                 \
        _name ## _eisa_legacy_probe ( struct eisa_device *eisa,           \
                             const struct eisa_device_id *id __unused ) { \
                return legacy_probe ( eisa, legacy_eisa_set_drvdata,      \
                                      &eisa->dev, _name ## _probe,        \
                                      _name ## _disable,                  \
                                      sizeof ( _fake_bss ) );             \
        }                                                                 \
        static inline void                                                \
        _name ## _eisa_legacy_remove ( struct eisa_device *eisa ) {       \
                return legacy_remove ( eisa, legacy_eisa_get_drvdata,     \
                                       _name ## _disable );               \
        }                                                                 \
        static inline int                                                 \
        _name ## _mca_legacy_probe ( struct mca_device *mca,              \
                              const struct mca_device_id *id __unused ) { \
                return legacy_probe ( mca, legacy_mca_set_drvdata,        \
                                      &mca->dev, _name ## _probe,         \
                                      _name ## _disable,                  \
                                      sizeof ( _fake_bss ) );             \
        }                                                                 \
        static inline void                                                \
        _name ## _mca_legacy_remove ( struct mca_device *mca ) {          \
                return legacy_remove ( mca, legacy_mca_get_drvdata,       \
                                       _name ## _disable );               \
        }                                                                 \
        static inline int                                                 \
        _name ## _isa_legacy_probe ( struct isa_device *isa ) {           \
                return legacy_probe ( isa, legacy_isa_set_drvdata,        \
                                      &isa->dev, _name ## _probe,         \
                                      _name ## _disable,                  \
                                      sizeof ( _fake_bss ) );             \
        }                                                                 \
        static inline void                                                \
        _name ## _isa_legacy_remove ( struct isa_device *isa ) {          \
                return legacy_remove ( isa, legacy_isa_get_drvdata,       \
                                       _name ## _disable );               \
        }                                                                 \
        PROVIDE_REQUIRING_SYMBOL()

#endif  /* NIC_H */