December 3, 2001 ESP 4

### NAME

esp - NCR 53C9x, Emulex ESP406, and Qlogic FAS408 SCSI driver

### SYNOPSIS

#### ISA bus

esp0 at isa? port 0x230 irq ?

#### PCMCIA

esp* at pcmcia? function ?

#### MCA

esp* at mca? slot ?

#### mac68k

esp0 at obio? esp1 at obio?

#### macppc

esp0 at obio0 flags 0x00ff

#### sun3x

esp0 at obio0 addr 0x66000000 ipl 2 flags 0xff0f

#### sparc

dma0 at obio0 addr 0xfa001000 level 4 (Sun 4/300) esp0 at obio0 addr 0xfa000000 level 4 (Sun 4/300)

dma0 at sbus0 slot ? offset ? (sun4c and sun4m) esp0 at sbus0 slot ? offset ? (sun4c) esp0 at dma0 (sun4m)

dma* at sbus? slot ? offset ? (Sbus) esp* at sbus? slot ? offset ? (SBus, older PROMs) esp* at dma? (SBus)

scsibus* at esp?

### DESCRIPTION

The esp driver provides support for the NCR 53C90, 53C94 and 53C96; Emulex ESP100, ESP100A, ESP200 and ESP406; and Qlogic FAS216 and FAS408 SCSI controller chips found in a wide variety of systems and peripheral boards. This includes the Qlogic ISA and VLB SCSI host adapters, and the Sun Fast SCSI buffered Ethernet for Sbus (FSBE/S, X1053A, Sun part # 501-2015).

For Qlogic PCI SCSI host adapters, use the isp(4) device.

### CONFIGURATION

The esp driver supports the following flags for use in config(1) files:

bits 0-7
  : disable disconnect/reselect for the corresponding SCSI target
bits 8-15
  : disable synchronous negotiation for the corresponding SCSI target
bits 16-23
  : disable tagged queuing for the corresponding SCSI target

"Target is synonymous with SCSI ID number.

Note that SCSI tape drives should be allowed to perform disconnect/reselect or performance will suffer.

### SEE ALSO

cd(4), ch(4), intro(4), le(4), mca(4), pcmcia(4), scsi(4), sd(4), ss(4), st(4), uk(4)

```http://www.qlc.com/`
```http://www.sun.com/`