diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 1997-01-07 02:33:00 +0000 |
|---|---|---|
| committer | <ralf@linux-mips.org> | 1997-01-07 02:33:00 +0000 |
| commit | beb116954b9b7f3bb56412b2494b562f02b864b1 (patch) | |
| tree | 120e997879884e1b9d93b265221b939d2ef1ade1 /drivers/net/3c503.h | |
| parent | 908d4681a1dc3792ecafbe64265783a86c4cccb6 (diff) | |
Import of Linux/MIPS 2.1.14
Diffstat (limited to 'drivers/net/3c503.h')
| -rw-r--r-- | drivers/net/3c503.h | 41 |
1 files changed, 36 insertions, 5 deletions
diff --git a/drivers/net/3c503.h b/drivers/net/3c503.h index f469a92c3..b9f8a46f8 100644 --- a/drivers/net/3c503.h +++ b/drivers/net/3c503.h @@ -6,10 +6,20 @@ #define EL2H (dev->base_addr + 0x400) #define EL2L (dev->base_addr) -/* Shared memory management parameters */ +/* Vendor unique hardware addr. prefix. 3Com has 2 because they ran + out of available addresses on the first one... */ -#define EL2SM_START_PG (0x20) /* First page of TX buffer */ -#define EL2SM_STOP_PG (0x40) /* Last page +1 of RX ring */ +#define OLD_3COM_ID 0x02608c +#define NEW_3COM_ID 0x0020af + +/* Shared memory management parameters. NB: The 8 bit cards have only + one bank (MB1) which serves both Tx and Rx packet space. The 16bit + cards have 2 banks, MB0 for Tx packets, and MB1 for Rx packets. + You choose which bank appears in the sh. mem window with EGACFR_MBSn */ + +#define EL2_MB0_START_PG (0x00) /* EL2/16 Tx packets go in bank 0 */ +#define EL2_MB1_START_PG (0x20) /* First page of bank 1 */ +#define EL2_MB1_STOP_PG (0x40) /* Last page +1 of bank 1 */ /* 3Com 3c503 ASIC registers */ #define E33G_STARTPG (EL2H+0) /* Start page, matching EN0_STARTPG */ @@ -54,7 +64,28 @@ /* Bits in E33G_GACFR register: */ -#define EGACFR_NORM (0x49) /* Enable 8K shared mem, no DMA TC int */ -#define EGACFR_IRQOFF (0xc9) /* Above, and disable 8390 IRQ line */ +#define EGACFR_NIM (0x80) /* NIC interrupt mask */ +#define EGACFR_TCM (0x40) /* DMA term. count interrupt mask */ +#define EGACFR_RSEL (0x08) /* Map a bank of card mem into system mem */ +#define EGACFR_MBS2 (0x04) /* Memory bank select, bit 2. */ +#define EGACFR_MBS1 (0x02) /* Memory bank select, bit 1. */ +#define EGACFR_MBS0 (0x01) /* Memory bank select, bit 0. */ + +#define EGACFR_NORM (0x49) /* TCM | RSEL | MBS0 */ +#define EGACFR_IRQOFF (0xc9) /* TCM | RSEL | MBS0 | NIM */ + +/* + MBS2 MBS1 MBS0 Sh. mem windows card mem at: + ---- ---- ---- ----------------------------- + 0 0 0 0x0000 -- bank 0 + 0 0 1 0x2000 -- bank 1 (only choice for 8bit card) + 0 1 0 0x4000 -- bank 2, not used + 0 1 1 0x6000 -- bank 3, not used + +There was going to be a 32k card that used bank 2 and 3, but it +never got produced. + +*/ + /* End of 3C503 parameter definitions */ |