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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [drivers/] [net/] [i82586.h] - Blame information for rev 1777

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/*
 * Intel 82586 IEEE 802.3 Ethernet LAN Coprocessor.
 *
 * See:
 *      Intel Microcommunications 1991
 *      p1-1 to p1-37
 *      Intel order No. 231658
 *      ISBN 1-55512-119-5
 *
 *     Unfortunately, the above chapter mentions neither
 * the System Configuration Pointer (SCP) nor the
 * Intermediate System Configuration Pointer (ISCP),
 * so we probably need to look elsewhere for the
 * whole story -- some recommend the "Intel LAN
 * Components manual" but I have neither a copy
 * nor a full reference.  But "elsewhere" may be
 * in the same publication...
 *     The description of a later device, the
 * "82596CA High-Performance 32-Bit Local Area Network
 * Coprocessor", (ibid. p1-38 to p1-109) does mention
 * the SCP and ISCP and also has an i82586 compatibility
 * mode.  Even more useful is "AP-235 An 82586 Data Link
 * Driver" (ibid. p1-337 to p1-417).
 */
 
#define I82586_MEMZ     (64 * 1024)
 
#define I82586_SCP_ADDR (I82586_MEMZ - sizeof(scp_t))
 
#define ADDR_LEN        6
#define I82586NULL      0xFFFF
 
#define toff(t,p,f)     (unsigned short)((void *)(&((t *)((void *)0 + (p)))->f) - (void *)0)
 
/*
 * System Configuration Pointer (SCP).
 */
typedef struct scp_t    scp_t;
struct scp_t
{
        unsigned short  scp_sysbus;     /* 82586 bus width:     */
#define         SCP_SY_16BBUS   (0x0 << 0)      /* 16 bits */
#define         SCP_SY_8BBUS    (0x1 << 0)      /*  8 bits. */
        unsigned short  scp_junk[2];    /* Unused */
        unsigned short  scp_iscpl;      /* lower 16 bits of ISCP_ADDR */
        unsigned short  scp_iscph;      /* upper 16 bits of ISCP_ADDR */
};
 
/*
 * Intermediate System Configuration Pointer (ISCP).
 */
typedef struct iscp_t   iscp_t;
struct iscp_t
{
        unsigned short  iscp_busy;      /* set by CPU before first CA,  */
                                        /* cleared by 82586 after read. */
        unsigned short  iscp_offset;    /* offset of SCB                */
        unsigned short  iscp_basel;     /* base of SCB                  */
        unsigned short  iscp_baseh;     /*  "                           */
};
 
/*
 * System Control Block (SCB).
 *      The 82586 writes its status to scb_status and then
 *      raises an interrupt to alert the CPU.
 *      The CPU writes a command to scb_command and
 *      then issues a Channel Attention (CA) to alert the 82586.
 */
typedef struct scb_t    scb_t;
struct scb_t
{
        unsigned short  scb_status;     /* Status of 82586              */
#define         SCB_ST_INT      (0xF << 12)     /* Some of:             */
#define         SCB_ST_CX       (0x1 << 15)     /* Cmd completed        */
#define         SCB_ST_FR       (0x1 << 14)     /* Frame received       */
#define         SCB_ST_CNA      (0x1 << 13)     /* Cmd unit not active  */
#define         SCB_ST_RNR      (0x1 << 12)     /* Rcv unit not ready   */
#define         SCB_ST_JUNK0    (0x1 << 11)     /* 0                    */
#define         SCB_ST_CUS      (0x7 <<  8)     /* Cmd unit status      */
#define                 SCB_ST_CUS_IDLE (0 << 8)        /* Idle         */
#define                 SCB_ST_CUS_SUSP (1 << 8)        /* Suspended    */
#define                 SCB_ST_CUS_ACTV (2 << 8)        /* Active       */
#define         SCB_ST_JUNK1    (0x1 <<  7)     /* 0                    */
#define         SCB_ST_RUS      (0x7 <<  4)     /* Rcv unit status      */
#define                 SCB_ST_RUS_IDLE (0 << 4)        /* Idle         */
#define                 SCB_ST_RUS_SUSP (1 << 4)        /* Suspended    */
#define                 SCB_ST_RUS_NRES (2 << 4)        /* No resources */
#define                 SCB_ST_RUS_RDY  (4 << 4)        /* Ready        */
        unsigned short  scb_command;    /* Next command                 */
#define         SCB_CMD_ACK_CX  (0x1 << 15)     /* Ack cmd completion   */
#define         SCB_CMD_ACK_FR  (0x1 << 14)     /* Ack frame received   */
#define         SCB_CMD_ACK_CNA (0x1 << 13)     /* Ack CU not active    */
#define         SCB_CMD_ACK_RNR (0x1 << 12)     /* Ack RU not ready     */
#define         SCB_CMD_JUNKX   (0x1 << 11)     /* Unused               */
#define         SCB_CMD_CUC     (0x7 <<  8)     /* Command Unit command */
#define                 SCB_CMD_CUC_NOP (0 << 8)        /* Nop          */
#define                 SCB_CMD_CUC_GO  (1 << 8)        /* Start cbl_offset */
#define                 SCB_CMD_CUC_RES (2 << 8)        /* Resume execution */
#define                 SCB_CMD_CUC_SUS (3 << 8)        /* Suspend   "  */
#define                 SCB_CMD_CUC_ABT (4 << 8)        /* Abort     "  */
#define         SCB_CMD_RESET   (0x1 <<  7)     /* Reset chip (hardware) */
#define         SCB_CMD_RUC     (0x7 <<  4)     /* Receive Unit command */
#define                 SCB_CMD_RUC_NOP (0 << 4)        /* Nop          */
#define                 SCB_CMD_RUC_GO  (1 << 4)        /* Start rfa_offset */
#define                 SCB_CMD_RUC_RES (2 << 4)        /* Resume reception */
#define                 SCB_CMD_RUC_SUS (3 << 4)        /* Suspend   "  */
#define                 SCB_CMD_RUC_ABT (4 << 4)        /* Abort     "  */
        unsigned short  scb_cbl_offset; /* Offset of first command unit */
                                        /* Action Command               */
        unsigned short  scb_rfa_offset; /* Offset of first Receive      */
                                        /* Frame Descriptor in the      */
                                        /* Receive Frame Area           */
        unsigned short  scb_crcerrs;    /* Properly aligned frames      */
                                        /* received with a CRC error    */
        unsigned short  scb_alnerrs;    /* Misaligned frames received   */
                                        /* with a CRC error             */
        unsigned short  scb_rscerrs;    /* Frames lost due to no space  */
        unsigned short  scb_ovrnerrs;   /* Frames lost due to slow bus  */
};
 
#define scboff(p,f)     toff(scb_t, p, f)
 
/*
 * The eight Action Commands.
 */
typedef enum acmd_e     acmd_e;
enum acmd_e
{
        acmd_nop        = 0,     /* Do nothing                           */
        acmd_ia_setup   = 1,    /* Load an (ethernet) address into the  */
                                /* 82586                                */
        acmd_configure  = 2,    /* Update the 82586 operating parameters */
        acmd_mc_setup   = 3,    /* Load a list of (ethernet) multicast  */
                                /* addresses into the 82586             */
        acmd_transmit   = 4,    /* Transmit a frame                     */
        acmd_tdr        = 5,    /* Perform a Time Domain Reflectometer  */
                                /* test on the serial link              */
        acmd_dump       = 6,    /* Copy 82586 registers to memory       */
        acmd_diagnose   = 7,    /* Run an internal self test            */
};
 
/*
 * Generic Action Command header.
 */
typedef struct ach_t    ach_t;
struct ach_t
{
        unsigned short  ac_status;              /* Command status:      */
#define         AC_SFLD_C       (0x1 << 15)     /* Command completed    */
#define         AC_SFLD_B       (0x1 << 14)     /* Busy executing       */
#define         AC_SFLD_OK      (0x1 << 13)     /* Completed error free */
#define         AC_SFLD_A       (0x1 << 12)     /* Command aborted      */
#define         AC_SFLD_FAIL    (0x1 << 11)     /* Selftest failed      */
#define         AC_SFLD_S10     (0x1 << 10)     /* No carrier sense     */
                                                /* during transmission  */
#define         AC_SFLD_S9      (0x1 <<  9)     /* Tx unsuccessful:     */
                                                /* (stopped) lost CTS   */
#define         AC_SFLD_S8      (0x1 <<  8)     /* Tx unsuccessful:     */
                                                /* (stopped) slow DMA   */
#define         AC_SFLD_S7      (0x1 <<  7)     /* Tx deferred:         */
                                                /* other link traffic   */
#define         AC_SFLD_S6      (0x1 <<  6)     /* Heart Beat: collision */
                                                /* detect after last tx */
#define         AC_SFLD_S5      (0x1 <<  5)     /* Tx stopped:          */
                                                /* excessive collisions */
#define         AC_SFLD_MAXCOL  (0xF <<  0)     /* Collision count      */
        unsigned short  ac_command;             /* Command specifier:   */
#define         AC_CFLD_EL      (0x1 << 15)     /* End of command list  */
#define         AC_CFLD_S       (0x1 << 14)     /* Suspend on completion */
#define         AC_CFLD_I       (0x1 << 13)     /* Interrupt on completion */
#define         AC_CFLD_CMD     (0x7 <<  0)     /* acmd_e               */
        unsigned short  ac_link;                /* Next Action Command  */
};
 
#define acoff(p,f)      toff(ach_t, p, f)
 
/*
 * The Nop Action Command.
 */
typedef struct ac_nop_t ac_nop_t;
struct ac_nop_t
{
        ach_t   nop_h;
};
 
/*
 * The IA-Setup Action Command.
 */
typedef struct ac_ias_t ac_ias_t;
struct ac_ias_t
{
        ach_t           ias_h;
        unsigned char   ias_addr[ADDR_LEN]; /* The (ethernet) address   */
};
 
/*
 * The Configure Action Command.
 */
typedef struct ac_cfg_t ac_cfg_t;
struct ac_cfg_t
{
        ach_t           cfg_h;
        unsigned char   cfg_byte_cnt;   /* Size foll data: 4-12 */
#define AC_CFG_BYTE_CNT(v)      (((v) & 0xF) << 0)
        unsigned char   cfg_fifolim;    /* FIFO threshold       */
#define AC_CFG_FIFOLIM(v)       (((v) & 0xF) << 0)
        unsigned char   cfg_byte8;
#define AC_CFG_SAV_BF(v)        (((v) & 0x1) << 7)      /* Save rxd bad frames  */
#define AC_CFG_SRDY(v)          (((v) & 0x1) << 6)      /* SRDY/ARDY pin means  */
                                                        /* external sync.       */
        unsigned char   cfg_byte9;
#define AC_CFG_ELPBCK(v)        (((v) & 0x1) << 7)      /* External loopback    */
#define AC_CFG_ILPBCK(v)        (((v) & 0x1) << 6)      /* Internal loopback    */
#define AC_CFG_PRELEN(v)        (((v) & 0x3) << 4)      /* Preamble length      */
#define         AC_CFG_PLEN_2           0                /*  2 bytes     */
#define         AC_CFG_PLEN_4           1               /*  4 bytes     */
#define         AC_CFG_PLEN_8           2               /*  8 bytes     */
#define         AC_CFG_PLEN_16          3               /* 16 bytes     */
#define AC_CFG_ALOC(v)          (((v) & 0x1) << 3)      /* Addr/len data is     */
                                                        /* explicit in buffers  */
#define AC_CFG_ADDRLEN(v)       (((v) & 0x7) << 0)      /* Bytes per address    */
        unsigned char   cfg_byte10;
#define AC_CFG_BOFMET(v)        (((v) & 0x1) << 7)      /* Use alternate expo.  */
                                                        /* backoff method       */
#define AC_CFG_ACR(v)           (((v) & 0x7) << 4)      /* Accelerated cont. res. */
#define AC_CFG_LINPRIO(v)       (((v) & 0x7) << 0)      /* Linear priority      */
        unsigned char   cfg_ifs;        /* Interframe spacing           */
        unsigned char   cfg_slotl;      /* Slot time (low byte)         */
        unsigned char   cfg_byte13;
#define AC_CFG_RETRYNUM(v)      (((v) & 0xF) << 4)      /* Max. collision retry */
#define AC_CFG_SLTTMHI(v)       (((v) & 0x7) << 0)      /* Slot time (high bits) */
        unsigned char   cfg_byte14;
#define AC_CFG_FLGPAD(v)        (((v) & 0x1) << 7)      /* Pad with HDLC flags  */
#define AC_CFG_BTSTF(v)         (((v) & 0x1) << 6)      /* Do HDLC bitstuffing  */
#define AC_CFG_CRC16(v)         (((v) & 0x1) << 5)      /* 16 bit CCITT CRC     */
#define AC_CFG_NCRC(v)          (((v) & 0x1) << 4)      /* Insert no CRC        */
#define AC_CFG_TNCRS(v)         (((v) & 0x1) << 3)      /* Tx even if no carrier */
#define AC_CFG_MANCH(v)         (((v) & 0x1) << 2)      /* Manchester coding    */
#define AC_CFG_BCDIS(v)         (((v) & 0x1) << 1)      /* Disable broadcast    */
#define AC_CFG_PRM(v)           (((v) & 0x1) << 0)      /* Promiscuous mode     */
        unsigned char   cfg_byte15;
#define AC_CFG_ICDS(v)          (((v) & 0x1) << 7)      /* Internal collision   */
                                                        /* detect source        */
#define AC_CFG_CDTF(v)          (((v) & 0x7) << 4)      /* Collision detect     */
                                                        /* filter in bit times  */
#define AC_CFG_ICSS(v)          (((v) & 0x1) << 3)      /* Internal carrier     */
                                                        /* sense source         */
#define AC_CFG_CSTF(v)          (((v) & 0x7) << 0)      /* Carrier sense        */
                                                        /* filter in bit times  */
        unsigned short  cfg_min_frm_len;
#define AC_CFG_MNFRM(v)         (((v) & 0xFF) << 0)     /* Min. bytes/frame (<= 255) */
};
 
/*
 * The MC-Setup Action Command.
 */
typedef struct ac_mcs_t ac_mcs_t;
struct ac_mcs_t
{
        ach_t           mcs_h;
        unsigned short  mcs_cnt;        /* No. of bytes of MC addresses */
#if 0
        unsigned char   mcs_data[ADDR_LEN]; /* The first MC address ..  */
        ...
#endif
};
 
#define I82586_MAX_MULTICAST_ADDRESSES  128     /* Hardware hashed filter */
 
/*
 * The Transmit Action Command.
 */
typedef struct ac_tx_t  ac_tx_t;
struct ac_tx_t
{
        ach_t           tx_h;
        unsigned short  tx_tbd_offset;  /* Address of list of buffers.  */
#if     0
Linux packets are passed down with the destination MAC address
and length/type field already prepended to the data,
so we do not need to insert it.  Consistent with this
we must also set the AC_CFG_ALOC(..) flag during the
ac_cfg_t action command.
        unsigned char   tx_addr[ADDR_LEN]; /* The frame dest. address   */
        unsigned short  tx_length;      /* The frame length             */
#endif  /* 0 */
};
 
/*
 * The Time Domain Reflectometer Action Command.
 */
typedef struct ac_tdr_t ac_tdr_t;
struct ac_tdr_t
{
        ach_t           tdr_h;
        unsigned short  tdr_result;     /* Result.      */
#define         AC_TDR_LNK_OK   (0x1 << 15)     /* No link problem      */
#define         AC_TDR_XCVR_PRB (0x1 << 14)     /* Txcvr cable problem  */
#define         AC_TDR_ET_OPN   (0x1 << 13)     /* Open on the link     */
#define         AC_TDR_ET_SRT   (0x1 << 12)     /* Short on the link    */
#define         AC_TDR_TIME     (0x7FF << 0)    /* Distance to problem  */
                                                /* site in transmit     */
                                                /* clock cycles         */
};
 
/*
 * The Dump Action Command.
 */
typedef struct ac_dmp_t ac_dmp_t;
struct ac_dmp_t
{
        ach_t           dmp_h;
        unsigned short  dmp_offset;     /* Result.      */
};
 
/*
 * Size of the result of the dump command.
 */
#define DUMPBYTES       170
 
/*
 * The Diagnose Action Command.
 */
typedef struct ac_dgn_t ac_dgn_t;
struct ac_dgn_t
{
        ach_t           dgn_h;
};
 
/*
 * Transmit Buffer Descriptor (TBD).
 */
typedef struct tbd_t    tbd_t;
struct tbd_t
{
        unsigned short  tbd_status;             /* Written by the CPU   */
#define         TBD_STATUS_EOF  (0x1 << 15)     /* This TBD is the      */
                                                /* last for this frame  */
#define         TBD_STATUS_ACNT (0x3FFF << 0)   /* Actual count of data */
                                                /* bytes in this buffer */
        unsigned short  tbd_next_bd_offset;     /* Next in list         */
        unsigned short  tbd_bufl;               /* Buffer address (low) */
        unsigned short  tbd_bufh;               /*    "      "  (high)  */
};
 
/*
 * Receive Buffer Descriptor (RBD).
 */
typedef struct rbd_t    rbd_t;
struct rbd_t
{
        unsigned short  rbd_status;             /* Written by the 82586 */
#define         RBD_STATUS_EOF  (0x1 << 15)     /* This RBD is the      */
                                                /* last for this frame  */
#define         RBD_STATUS_F    (0x1 << 14)     /* ACNT field is valid  */
#define         RBD_STATUS_ACNT (0x3FFF << 0)   /* Actual no. of data   */
                                                /* bytes in this buffer */
        unsigned short  rbd_next_rbd_offset;    /* Next rbd in list     */
        unsigned short  rbd_bufl;               /* Data pointer (low)   */
        unsigned short  rbd_bufh;               /*  "      "    (high)  */
        unsigned short  rbd_el_size;            /* EL+Data buf. size    */
#define         RBD_EL  (0x1 << 15)             /* This BD is the       */
                                                /* last in the list     */
#define         RBD_SIZE (0x3FFF << 0)          /* No. of bytes the     */
                                                /* buffer can hold      */
};
 
#define rbdoff(p,f)     toff(rbd_t, p, f)
 
/*
 * Frame Descriptor (FD).
 */
typedef struct fd_t     fd_t;
struct fd_t
{
        unsigned short  fd_status;              /* Written by the 82586 */
#define         FD_STATUS_C     (0x1 << 15)     /* Completed storing frame */
#define         FD_STATUS_B     (0x1 << 14)     /* FD was consumed by RU */
#define         FD_STATUS_OK    (0x1 << 13)     /* Frame rxd successfully */
#define         FD_STATUS_S11   (0x1 << 11)     /* CRC error            */
#define         FD_STATUS_S10   (0x1 << 10)     /* Alignment error      */
#define         FD_STATUS_S9    (0x1 <<  9)     /* Ran out of resources */
#define         FD_STATUS_S8    (0x1 <<  8)     /* Rx DMA overrun       */
#define         FD_STATUS_S7    (0x1 <<  7)     /* Frame too short      */
#define         FD_STATUS_S6    (0x1 <<  6)     /* No EOF flag          */
        unsigned short  fd_command;             /* Command              */
#define         FD_COMMAND_EL   (0x1 << 15)     /* Last FD in list      */
#define         FD_COMMAND_S    (0x1 << 14)     /* Suspend RU after rx  */
        unsigned short  fd_link_offset;         /* Next FD              */
        unsigned short  fd_rbd_offset;          /* First RBD (data)     */
                                                /* Prepared by CPU,     */
                                                /* updated by 82586     */
#if     0
I think the rest is unused since we
have set AC_CFG_ALOC(..).  However, just
in case, we leave the space.
#endif  /* 0 */
        unsigned char   fd_dest[ADDR_LEN];      /* Destination address  */
                                                /* Written by 82586     */
        unsigned char   fd_src[ADDR_LEN];       /* Source address       */
                                                /* Written by 82586     */
        unsigned short  fd_length;              /* Frame length or type */
                                                /* Written by 82586     */
};
 
#define fdoff(p,f)      toff(fd_t, p, f)
 
/*
 * This software may only be used and distributed
 * according to the terms of the GNU Public License.
 *
 * For more details, see wavelan.c.
 */

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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [drivers/] [net/] [i82586.h] - Blame information for rev 1777

Line No.	Rev	Author	Line
1	1626	jcastillo	`/*`
2			`* Intel 82586 IEEE 802.3 Ethernet LAN Coprocessor.`
3			`*`
4			`* See:`
5			`* Intel Microcommunications 1991`
6			`* p1-1 to p1-37`
7			`* Intel order No. 231658`
8			`* ISBN 1-55512-119-5`
9			`*`
10			`* Unfortunately, the above chapter mentions neither`
11			`* the System Configuration Pointer (SCP) nor the`
12			`* Intermediate System Configuration Pointer (ISCP),`
13			`* so we probably need to look elsewhere for the`
14			`* whole story -- some recommend the "Intel LAN`
15			`* Components manual" but I have neither a copy`
16			`* nor a full reference. But "elsewhere" may be`
17			`* in the same publication...`
18			`* The description of a later device, the`
19			`* "82596CA High-Performance 32-Bit Local Area Network`
20			`* Coprocessor", (ibid. p1-38 to p1-109) does mention`
21			`* the SCP and ISCP and also has an i82586 compatibility`
22			`* mode. Even more useful is "AP-235 An 82586 Data Link`
23			`* Driver" (ibid. p1-337 to p1-417).`
24			`*/`
25
26			`#define I82586_MEMZ (64 * 1024)`
27
28			`#define I82586_SCP_ADDR (I82586_MEMZ - sizeof(scp_t))`
29
30			`#define ADDR_LEN 6`
31			`#define I82586NULL 0xFFFF`
32
33			`#define toff(t,p,f) (unsigned short)((void )(&((t )((void )0 + (p)))->f) - (void )0)`
34
35			`/*`
36			`* System Configuration Pointer (SCP).`
37			`*/`
38			`typedef struct scp_t scp_t;`
39			`struct scp_t`
40			`{`
41			`unsigned short scp_sysbus; /* 82586 bus width: */`
42			`#define SCP_SY_16BBUS (0x0 << 0) /* 16 bits */`
43			`#define SCP_SY_8BBUS (0x1 << 0) /* 8 bits. */`
44			`unsigned short scp_junk[2]; /* Unused */`
45			`unsigned short scp_iscpl; /* lower 16 bits of ISCP_ADDR */`
46			`unsigned short scp_iscph; /* upper 16 bits of ISCP_ADDR */`
47			`};`
48
49			`/*`
50			`* Intermediate System Configuration Pointer (ISCP).`
51			`*/`
52			`typedef struct iscp_t iscp_t;`
53			`struct iscp_t`
54			`{`
55			`unsigned short iscp_busy; /* set by CPU before first CA, */`
56			`/* cleared by 82586 after read. */`
57			`unsigned short iscp_offset; /* offset of SCB */`
58			`unsigned short iscp_basel; /* base of SCB */`
59			`unsigned short iscp_baseh; /* " */`
60			`};`
61
62			`/*`
63			`* System Control Block (SCB).`
64			`* The 82586 writes its status to scb_status and then`
65			`* raises an interrupt to alert the CPU.`
66			`* The CPU writes a command to scb_command and`
67			`* then issues a Channel Attention (CA) to alert the 82586.`
68			`*/`
69			`typedef struct scb_t scb_t;`
70			`struct scb_t`
71			`{`
72			`unsigned short scb_status; /* Status of 82586 */`
73			`#define SCB_ST_INT (0xF << 12) /* Some of: */`
74			`#define SCB_ST_CX (0x1 << 15) /* Cmd completed */`
75			`#define SCB_ST_FR (0x1 << 14) /* Frame received */`
76			`#define SCB_ST_CNA (0x1 << 13) /* Cmd unit not active */`
77			`#define SCB_ST_RNR (0x1 << 12) /* Rcv unit not ready */`
78			`#define SCB_ST_JUNK0 (0x1 << 11) /* 0 */`
79			`#define SCB_ST_CUS (0x7 << 8) /* Cmd unit status */`
80			`#define SCB_ST_CUS_IDLE (0 << 8) /* Idle */`
81			`#define SCB_ST_CUS_SUSP (1 << 8) /* Suspended */`
82			`#define SCB_ST_CUS_ACTV (2 << 8) /* Active */`
83			`#define SCB_ST_JUNK1 (0x1 << 7) /* 0 */`
84			`#define SCB_ST_RUS (0x7 << 4) /* Rcv unit status */`
85			`#define SCB_ST_RUS_IDLE (0 << 4) /* Idle */`
86			`#define SCB_ST_RUS_SUSP (1 << 4) /* Suspended */`
87			`#define SCB_ST_RUS_NRES (2 << 4) /* No resources */`
88			`#define SCB_ST_RUS_RDY (4 << 4) /* Ready */`
89			`unsigned short scb_command; /* Next command */`
90			`#define SCB_CMD_ACK_CX (0x1 << 15) /* Ack cmd completion */`
91			`#define SCB_CMD_ACK_FR (0x1 << 14) /* Ack frame received */`
92			`#define SCB_CMD_ACK_CNA (0x1 << 13) /* Ack CU not active */`
93			`#define SCB_CMD_ACK_RNR (0x1 << 12) /* Ack RU not ready */`
94			`#define SCB_CMD_JUNKX (0x1 << 11) /* Unused */`
95			`#define SCB_CMD_CUC (0x7 << 8) /* Command Unit command */`
96			`#define SCB_CMD_CUC_NOP (0 << 8) /* Nop */`
97			`#define SCB_CMD_CUC_GO (1 << 8) /* Start cbl_offset */`
98			`#define SCB_CMD_CUC_RES (2 << 8) /* Resume execution */`
99			`#define SCB_CMD_CUC_SUS (3 << 8) /* Suspend " */`
100			`#define SCB_CMD_CUC_ABT (4 << 8) /* Abort " */`
101			`#define SCB_CMD_RESET (0x1 << 7) /* Reset chip (hardware) */`
102			`#define SCB_CMD_RUC (0x7 << 4) /* Receive Unit command */`
103			`#define SCB_CMD_RUC_NOP (0 << 4) /* Nop */`
104			`#define SCB_CMD_RUC_GO (1 << 4) /* Start rfa_offset */`
105			`#define SCB_CMD_RUC_RES (2 << 4) /* Resume reception */`
106			`#define SCB_CMD_RUC_SUS (3 << 4) /* Suspend " */`
107			`#define SCB_CMD_RUC_ABT (4 << 4) /* Abort " */`
108			`unsigned short scb_cbl_offset; /* Offset of first command unit */`
109			`/* Action Command */`
110			`unsigned short scb_rfa_offset; /* Offset of first Receive */`
111			`/* Frame Descriptor in the */`
112			`/* Receive Frame Area */`
113			`unsigned short scb_crcerrs; /* Properly aligned frames */`
114			`/* received with a CRC error */`
115			`unsigned short scb_alnerrs; /* Misaligned frames received */`
116			`/* with a CRC error */`
117			`unsigned short scb_rscerrs; /* Frames lost due to no space */`
118			`unsigned short scb_ovrnerrs; /* Frames lost due to slow bus */`
119			`};`
120
121			`#define scboff(p,f) toff(scb_t, p, f)`
122
123			`/*`
124			`* The eight Action Commands.`
125			`*/`
126			`typedef enum acmd_e acmd_e;`
127			`enum acmd_e`
128			`{`
129			`acmd_nop = 0, /* Do nothing */`
130			`acmd_ia_setup = 1, /* Load an (ethernet) address into the */`
131			`/* 82586 */`
132			`acmd_configure = 2, /* Update the 82586 operating parameters */`
133			`acmd_mc_setup = 3, /* Load a list of (ethernet) multicast */`
134			`/* addresses into the 82586 */`
135			`acmd_transmit = 4, /* Transmit a frame */`
136			`acmd_tdr = 5, /* Perform a Time Domain Reflectometer */`
137			`/* test on the serial link */`
138			`acmd_dump = 6, /* Copy 82586 registers to memory */`
139			`acmd_diagnose = 7, /* Run an internal self test */`
140			`};`
141
142			`/*`
143			`* Generic Action Command header.`
144			`*/`
145			`typedef struct ach_t ach_t;`
146			`struct ach_t`
147			`{`
148			`unsigned short ac_status; /* Command status: */`
149			`#define AC_SFLD_C (0x1 << 15) /* Command completed */`
150			`#define AC_SFLD_B (0x1 << 14) /* Busy executing */`
151			`#define AC_SFLD_OK (0x1 << 13) /* Completed error free */`
152			`#define AC_SFLD_A (0x1 << 12) /* Command aborted */`
153			`#define AC_SFLD_FAIL (0x1 << 11) /* Selftest failed */`
154			`#define AC_SFLD_S10 (0x1 << 10) /* No carrier sense */`
155			`/* during transmission */`
156			`#define AC_SFLD_S9 (0x1 << 9) /* Tx unsuccessful: */`
157			`/* (stopped) lost CTS */`
158			`#define AC_SFLD_S8 (0x1 << 8) /* Tx unsuccessful: */`
159			`/* (stopped) slow DMA */`
160			`#define AC_SFLD_S7 (0x1 << 7) /* Tx deferred: */`
161			`/* other link traffic */`
162			`#define AC_SFLD_S6 (0x1 << 6) /* Heart Beat: collision */`
163			`/* detect after last tx */`
164			`#define AC_SFLD_S5 (0x1 << 5) /* Tx stopped: */`
165			`/* excessive collisions */`
166			`#define AC_SFLD_MAXCOL (0xF << 0) /* Collision count */`
167			`unsigned short ac_command; /* Command specifier: */`
168			`#define AC_CFLD_EL (0x1 << 15) /* End of command list */`
169			`#define AC_CFLD_S (0x1 << 14) /* Suspend on completion */`
170			`#define AC_CFLD_I (0x1 << 13) /* Interrupt on completion */`
171			`#define AC_CFLD_CMD (0x7 << 0) /* acmd_e */`
172			`unsigned short ac_link; /* Next Action Command */`
173			`};`
174
175			`#define acoff(p,f) toff(ach_t, p, f)`
176
177			`/*`
178			`* The Nop Action Command.`
179			`*/`
180			`typedef struct ac_nop_t ac_nop_t;`
181			`struct ac_nop_t`
182			`{`
183			`ach_t nop_h;`
184			`};`
185
186			`/*`
187			`* The IA-Setup Action Command.`
188			`*/`
189			`typedef struct ac_ias_t ac_ias_t;`
190			`struct ac_ias_t`
191			`{`
192			`ach_t ias_h;`
193			`unsigned char ias_addr[ADDR_LEN]; /* The (ethernet) address */`
194			`};`
195
196			`/*`
197			`* The Configure Action Command.`
198			`*/`
199			`typedef struct ac_cfg_t ac_cfg_t;`
200			`struct ac_cfg_t`
201			`{`
202			`ach_t cfg_h;`
203			`unsigned char cfg_byte_cnt; /* Size foll data: 4-12 */`
204			`#define AC_CFG_BYTE_CNT(v) (((v) & 0xF) << 0)`
205			`unsigned char cfg_fifolim; /* FIFO threshold */`
206			`#define AC_CFG_FIFOLIM(v) (((v) & 0xF) << 0)`
207			`unsigned char cfg_byte8;`
208			`#define AC_CFG_SAV_BF(v) (((v) & 0x1) << 7) /* Save rxd bad frames */`
209			`#define AC_CFG_SRDY(v) (((v) & 0x1) << 6) /* SRDY/ARDY pin means */`
210			`/* external sync. */`
211			`unsigned char cfg_byte9;`
212			`#define AC_CFG_ELPBCK(v) (((v) & 0x1) << 7) /* External loopback */`
213			`#define AC_CFG_ILPBCK(v) (((v) & 0x1) << 6) /* Internal loopback */`
214			`#define AC_CFG_PRELEN(v) (((v) & 0x3) << 4) /* Preamble length */`
215			`#define AC_CFG_PLEN_2 0 /* 2 bytes */`
216			`#define AC_CFG_PLEN_4 1 /* 4 bytes */`
217			`#define AC_CFG_PLEN_8 2 /* 8 bytes */`
218			`#define AC_CFG_PLEN_16 3 /* 16 bytes */`
219			`#define AC_CFG_ALOC(v) (((v) & 0x1) << 3) /* Addr/len data is */`
220			`/* explicit in buffers */`
221			`#define AC_CFG_ADDRLEN(v) (((v) & 0x7) << 0) /* Bytes per address */`
222			`unsigned char cfg_byte10;`
223			`#define AC_CFG_BOFMET(v) (((v) & 0x1) << 7) /* Use alternate expo. */`
224			`/* backoff method */`
225			`#define AC_CFG_ACR(v) (((v) & 0x7) << 4) /* Accelerated cont. res. */`
226			`#define AC_CFG_LINPRIO(v) (((v) & 0x7) << 0) /* Linear priority */`
227			`unsigned char cfg_ifs; /* Interframe spacing */`
228			`unsigned char cfg_slotl; /* Slot time (low byte) */`
229			`unsigned char cfg_byte13;`
230			`#define AC_CFG_RETRYNUM(v) (((v) & 0xF) << 4) /* Max. collision retry */`
231			`#define AC_CFG_SLTTMHI(v) (((v) & 0x7) << 0) /* Slot time (high bits) */`
232			`unsigned char cfg_byte14;`
233			`#define AC_CFG_FLGPAD(v) (((v) & 0x1) << 7) /* Pad with HDLC flags */`
234			`#define AC_CFG_BTSTF(v) (((v) & 0x1) << 6) /* Do HDLC bitstuffing */`
235			`#define AC_CFG_CRC16(v) (((v) & 0x1) << 5) /* 16 bit CCITT CRC */`
236			`#define AC_CFG_NCRC(v) (((v) & 0x1) << 4) /* Insert no CRC */`
237			`#define AC_CFG_TNCRS(v) (((v) & 0x1) << 3) /* Tx even if no carrier */`
238			`#define AC_CFG_MANCH(v) (((v) & 0x1) << 2) /* Manchester coding */`
239			`#define AC_CFG_BCDIS(v) (((v) & 0x1) << 1) /* Disable broadcast */`
240			`#define AC_CFG_PRM(v) (((v) & 0x1) << 0) /* Promiscuous mode */`
241			`unsigned char cfg_byte15;`
242			`#define AC_CFG_ICDS(v) (((v) & 0x1) << 7) /* Internal collision */`
243			`/* detect source */`
244			`#define AC_CFG_CDTF(v) (((v) & 0x7) << 4) /* Collision detect */`
245			`/* filter in bit times */`
246			`#define AC_CFG_ICSS(v) (((v) & 0x1) << 3) /* Internal carrier */`
247			`/* sense source */`
248			`#define AC_CFG_CSTF(v) (((v) & 0x7) << 0) /* Carrier sense */`
249			`/* filter in bit times */`
250			`unsigned short cfg_min_frm_len;`
251			`#define AC_CFG_MNFRM(v) (((v) & 0xFF) << 0) /* Min. bytes/frame (<= 255) */`
252			`};`
253
254			`/*`
255			`* The MC-Setup Action Command.`
256			`*/`
257			`typedef struct ac_mcs_t ac_mcs_t;`
258			`struct ac_mcs_t`
259			`{`
260			`ach_t mcs_h;`
261			`unsigned short mcs_cnt; /* No. of bytes of MC addresses */`
262			`#if 0`
263			`unsigned char mcs_data[ADDR_LEN]; /* The first MC address .. */`
264			`...`
265			`#endif`
266			`};`
267
268			`#define I82586_MAX_MULTICAST_ADDRESSES 128 /* Hardware hashed filter */`
269
270			`/*`
271			`* The Transmit Action Command.`
272			`*/`
273			`typedef struct ac_tx_t ac_tx_t;`
274			`struct ac_tx_t`
275			`{`
276			`ach_t tx_h;`
277			`unsigned short tx_tbd_offset; /* Address of list of buffers. */`
278			`#if 0`
279			`Linux packets are passed down with the destination MAC address`
280			`and length/type field already prepended to the data,`
281			`so we do not need to insert it. Consistent with this`
282			`we must also set the AC_CFG_ALOC(..) flag during the`
283			`ac_cfg_t action command.`
284			`unsigned char tx_addr[ADDR_LEN]; /* The frame dest. address */`
285			`unsigned short tx_length; /* The frame length */`
286			`#endif /* 0 */`
287			`};`
288
289			`/*`
290			`* The Time Domain Reflectometer Action Command.`
291			`*/`
292			`typedef struct ac_tdr_t ac_tdr_t;`
293			`struct ac_tdr_t`
294			`{`
295			`ach_t tdr_h;`
296			`unsigned short tdr_result; /* Result. */`
297			`#define AC_TDR_LNK_OK (0x1 << 15) /* No link problem */`
298			`#define AC_TDR_XCVR_PRB (0x1 << 14) /* Txcvr cable problem */`
299			`#define AC_TDR_ET_OPN (0x1 << 13) /* Open on the link */`
300			`#define AC_TDR_ET_SRT (0x1 << 12) /* Short on the link */`
301			`#define AC_TDR_TIME (0x7FF << 0) /* Distance to problem */`
302			`/* site in transmit */`
303			`/* clock cycles */`
304			`};`
305
306			`/*`
307			`* The Dump Action Command.`
308			`*/`
309			`typedef struct ac_dmp_t ac_dmp_t;`
310			`struct ac_dmp_t`
311			`{`
312			`ach_t dmp_h;`
313			`unsigned short dmp_offset; /* Result. */`
314			`};`
315
316			`/*`
317			`* Size of the result of the dump command.`
318			`*/`
319			`#define DUMPBYTES 170`
320
321			`/*`
322			`* The Diagnose Action Command.`
323			`*/`
324			`typedef struct ac_dgn_t ac_dgn_t;`
325			`struct ac_dgn_t`
326			`{`
327			`ach_t dgn_h;`
328			`};`
329
330			`/*`
331			`* Transmit Buffer Descriptor (TBD).`
332			`*/`
333			`typedef struct tbd_t tbd_t;`
334			`struct tbd_t`
335			`{`
336			`unsigned short tbd_status; /* Written by the CPU */`
337			`#define TBD_STATUS_EOF (0x1 << 15) /* This TBD is the */`
338			`/* last for this frame */`
339			`#define TBD_STATUS_ACNT (0x3FFF << 0) /* Actual count of data */`
340			`/* bytes in this buffer */`
341			`unsigned short tbd_next_bd_offset; /* Next in list */`
342			`unsigned short tbd_bufl; /* Buffer address (low) */`
343			`unsigned short tbd_bufh; /* " " (high) */`
344			`};`
345
346			`/*`
347			`* Receive Buffer Descriptor (RBD).`
348			`*/`
349			`typedef struct rbd_t rbd_t;`
350			`struct rbd_t`
351			`{`
352			`unsigned short rbd_status; /* Written by the 82586 */`
353			`#define RBD_STATUS_EOF (0x1 << 15) /* This RBD is the */`
354			`/* last for this frame */`
355			`#define RBD_STATUS_F (0x1 << 14) /* ACNT field is valid */`
356			`#define RBD_STATUS_ACNT (0x3FFF << 0) /* Actual no. of data */`
357			`/* bytes in this buffer */`
358			`unsigned short rbd_next_rbd_offset; /* Next rbd in list */`
359			`unsigned short rbd_bufl; /* Data pointer (low) */`
360			`unsigned short rbd_bufh; /* " " (high) */`
361			`unsigned short rbd_el_size; /* EL+Data buf. size */`
362			`#define RBD_EL (0x1 << 15) /* This BD is the */`
363			`/* last in the list */`
364			`#define RBD_SIZE (0x3FFF << 0) /* No. of bytes the */`
365			`/* buffer can hold */`
366			`};`
367
368			`#define rbdoff(p,f) toff(rbd_t, p, f)`
369
370			`/*`
371			`* Frame Descriptor (FD).`
372			`*/`
373			`typedef struct fd_t fd_t;`
374			`struct fd_t`
375			`{`
376			`unsigned short fd_status; /* Written by the 82586 */`
377			`#define FD_STATUS_C (0x1 << 15) /* Completed storing frame */`
378			`#define FD_STATUS_B (0x1 << 14) /* FD was consumed by RU */`
379			`#define FD_STATUS_OK (0x1 << 13) /* Frame rxd successfully */`
380			`#define FD_STATUS_S11 (0x1 << 11) /* CRC error */`
381			`#define FD_STATUS_S10 (0x1 << 10) /* Alignment error */`
382			`#define FD_STATUS_S9 (0x1 << 9) /* Ran out of resources */`
383			`#define FD_STATUS_S8 (0x1 << 8) /* Rx DMA overrun */`
384			`#define FD_STATUS_S7 (0x1 << 7) /* Frame too short */`
385			`#define FD_STATUS_S6 (0x1 << 6) /* No EOF flag */`
386			`unsigned short fd_command; /* Command */`
387			`#define FD_COMMAND_EL (0x1 << 15) /* Last FD in list */`
388			`#define FD_COMMAND_S (0x1 << 14) /* Suspend RU after rx */`
389			`unsigned short fd_link_offset; /* Next FD */`
390			`unsigned short fd_rbd_offset; /* First RBD (data) */`
391			`/* Prepared by CPU, */`
392			`/* updated by 82586 */`
393			`#if 0`
394			`I think the rest is unused since we`
395			`have set AC_CFG_ALOC(..). However, just`
396			`in case, we leave the space.`
397			`#endif /* 0 */`
398			`unsigned char fd_dest[ADDR_LEN]; /* Destination address */`
399			`/* Written by 82586 */`
400			`unsigned char fd_src[ADDR_LEN]; /* Source address */`
401			`/* Written by 82586 */`
402			`unsigned short fd_length; /* Frame length or type */`
403			`/* Written by 82586 */`
404			`};`
405
406			`#define fdoff(p,f) toff(fd_t, p, f)`
407
408			`/*`
409			`* This software may only be used and distributed`
410			`* according to the terms of the GNU Public License.`
411			`*`
412			`* For more details, see wavelan.c.`
413			`*/`