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Annotation of qemu/roms/ipxe/src/drivers/net/etherfabric_nic.h, revision 1.1

1.1     ! root        1: /**************************************************************************
        !             2:  *
        !             3:  * Etherboot driver for Level 5 Etherfabric network cards
        !             4:  *
        !             5:  * Written by Michael Brown <[email protected]>
        !             6:  *
        !             7:  * Copyright Fen Systems Ltd. 2005
        !             8:  * Copyright Level 5 Networks Inc. 2005
        !             9:  *
        !            10:  * This software may be used and distributed according to the terms of
        !            11:  * the GNU General Public License (GPL), incorporated herein by
        !            12:  * reference.  Drivers based on or derived from this code fall under
        !            13:  * the GPL and must retain the authorship, copyright and license
        !            14:  * notice.
        !            15:  *
        !            16:  **************************************************************************
        !            17:  */
        !            18: 
        !            19: FILE_LICENCE ( GPL_ANY );
        !            20: 
        !            21: #ifndef EFAB_NIC_H
        !            22: #define  EFAB_NIC_H
        !            23: #include <ipxe/bitbash.h>
        !            24: #include <ipxe/i2c.h>
        !            25: #include <ipxe/spi.h>
        !            26: #include <ipxe/nvo.h>
        !            27: #include <ipxe/if_ether.h>
        !            28: /**************************************************************************
        !            29:  *
        !            30:  * Constants and macros
        !            31:  *
        !            32:  **************************************************************************
        !            33:  */
        !            34: /* Board IDs. Early boards have no board_type, (e.g. EF1002 and 401/403)
        !            35:  * But newer boards are getting bigger...
        !            36:  */
        !            37: typedef enum {
        !            38:        EFAB_BOARD_INVALID = 0, /* Early boards do not have board rev. info. */
        !            39:        EFAB_BOARD_SFE4001 = 1,
        !            40:        EFAB_BOARD_SFE4002 = 2,
        !            41:        EFAB_BOARD_SFE4003 = 3,
        !            42:        /* Insert new types before here */
        !            43:        EFAB_BOARD_MAX
        !            44: } efab_board_type;
        !            45: 
        !            46: /* PHY types. */
        !            47: typedef enum {
        !            48:        PHY_TYPE_AUTO = 0, /* on development board detect between CX4 & alaska */
        !            49:        PHY_TYPE_CX4_RTMR = 1,
        !            50:        PHY_TYPE_1GIG_ALASKA = 2,
        !            51:        PHY_TYPE_10XPRESS = 3,
        !            52:        PHY_TYPE_XFP = 4,
        !            53:        PHY_TYPE_CX4 = 5,
        !            54:        PHY_TYPE_PM8358 = 6,
        !            55: } phy_type_t;
        !            56: 
        !            57: /**************************************************************************
        !            58:  *
        !            59:  * Hardware data structures and sizing
        !            60:  *
        !            61:  **************************************************************************
        !            62:  */
        !            63: 
        !            64: #define dma_addr_t unsigned long
        !            65: typedef efab_qword_t falcon_rx_desc_t;
        !            66: typedef efab_qword_t falcon_tx_desc_t;
        !            67: typedef efab_qword_t falcon_event_t;
        !            68: 
        !            69: #define EFAB_BUF_ALIGN         4096
        !            70: #define EFAB_RXD_SIZE          512
        !            71: #define EFAB_TXD_SIZE          512
        !            72: #define EFAB_EVQ_SIZE          512
        !            73: 
        !            74: #define EFAB_NUM_RX_DESC        16
        !            75: #define EFAB_RX_BUF_SIZE       1600
        !            76: 
        !            77: /**************************************************************************
        !            78:  *
        !            79:  * Data structures
        !            80:  *
        !            81:  **************************************************************************
        !            82:  */
        !            83: 
        !            84: struct efab_nic;
        !            85: 
        !            86: /* A buffer table allocation backing a tx dma, rx dma or eventq */
        !            87: struct efab_special_buffer {
        !            88:        dma_addr_t dma_addr;
        !            89:        int id;
        !            90: };
        !            91: 
        !            92: /* A TX queue */
        !            93: struct efab_tx_queue {
        !            94:        /* The hardware ring */
        !            95:        falcon_tx_desc_t *ring;
        !            96: 
        !            97:        /* The software ring storing io_buffers. */
        !            98:        struct io_buffer *buf[EFAB_TXD_SIZE];
        !            99: 
        !           100:        /* The buffer table reservation pushed to hardware */
        !           101:        struct efab_special_buffer entry;
        !           102: 
        !           103:        /* Software descriptor write ptr */
        !           104:        unsigned int write_ptr;
        !           105: 
        !           106:        /* Hardware descriptor read ptr */
        !           107:        unsigned int read_ptr;
        !           108: };
        !           109: 
        !           110: /* An RX queue */
        !           111: struct efab_rx_queue {
        !           112:        /* The hardware ring */
        !           113:        falcon_rx_desc_t *ring;
        !           114: 
        !           115:        /* The software ring storing io_buffers */
        !           116:        struct io_buffer *buf[EFAB_NUM_RX_DESC];
        !           117: 
        !           118:        /* The buffer table reservation pushed to hardware */
        !           119:        struct efab_special_buffer entry;
        !           120: 
        !           121:        /* Descriptor write ptr, into both the hardware and software rings */
        !           122:        unsigned int write_ptr;
        !           123: 
        !           124:        /* Hardware completion ptr */
        !           125:        unsigned int read_ptr;
        !           126: };
        !           127: 
        !           128: /* An event queue */
        !           129: struct efab_ev_queue {
        !           130:        /* The hardware ring to push to hardware.
        !           131:         * Must be the first entry in the structure */
        !           132:        falcon_event_t *ring;
        !           133: 
        !           134:        /* The buffer table reservation pushed to hardware */
        !           135:        struct efab_special_buffer entry;
        !           136: 
        !           137:        /* Pointers into the ring */
        !           138:        unsigned int read_ptr;
        !           139: };
        !           140: 
        !           141: struct efab_mac_operations {
        !           142:        int ( * init ) ( struct efab_nic *efab );
        !           143: };
        !           144: 
        !           145: struct efab_phy_operations {
        !           146:        int ( * init ) ( struct efab_nic *efab );
        !           147:        unsigned int mmds;
        !           148: };
        !           149: 
        !           150: struct efab_board_operations {
        !           151:        int ( * init ) ( struct efab_nic *efab );
        !           152:        void ( * fini ) ( struct efab_nic *efab );
        !           153: };
        !           154: 
        !           155: struct efab_nic {
        !           156:        struct net_device *netdev;
        !           157:        int pci_revision;
        !           158:        int is_asic;
        !           159: 
        !           160:        /* I2C bit-bashed interface */
        !           161:        struct i2c_bit_basher i2c_bb;
        !           162: 
        !           163:        /** SPI bus and devices, and the user visible NVO area */
        !           164:        struct spi_bus spi_bus;
        !           165:        struct spi_device spi_flash;
        !           166:        struct spi_device spi_eeprom;
        !           167:        struct spi_device *spi;
        !           168:        struct nvo_block nvo;
        !           169: 
        !           170:        /** Board, MAC, and PHY operations tables */
        !           171:        struct efab_board_operations *board_op;
        !           172:        struct efab_mac_operations *mac_op;
        !           173:        struct efab_phy_operations *phy_op;
        !           174: 
        !           175:        /* PHY and board types */
        !           176:        int phy_addr;
        !           177:        int phy_type;
        !           178:        int phy_10g;
        !           179:        int board_type;
        !           180: 
        !           181:        /** Memory and IO base */
        !           182:        void *membase;
        !           183:        unsigned int iobase;
        !           184: 
        !           185:        /* Buffer table allocation head */
        !           186:        int buffer_head;
        !           187: 
        !           188:        /* Queues */
        !           189:        struct efab_rx_queue rx_queue;
        !           190:        struct efab_tx_queue tx_queue;
        !           191:        struct efab_ev_queue ev_queue;
        !           192: 
        !           193:        /** MAC address */
        !           194:        uint8_t mac_addr[ETH_ALEN];
        !           195:        /** GMII link options */
        !           196:        unsigned int link_options;
        !           197:        /** Link status */
        !           198:        int link_up;
        !           199: 
        !           200:        /** INT_REG_KER */
        !           201:        efab_oword_t int_ker __attribute__ (( aligned ( 16 ) ));
        !           202: };
        !           203: #endif /* EFAB_NIC_H */
        !           204: 

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