Z8530 Programming Guide

Table of Contents

1. Introduction

2. Driver Modes

3. Using the Z85230 driver

4. Attaching Network Interfaces

5. Configuring And Activating The Port

6. Network Layer Functions

7. Porting The Z8530 Driver

8. Known Bugs And Assumptions

9. Public Functions Provided

z8530_interrupt — Handle an interrupt from a Z8530

z8530_sync_open — Open a Z8530 channel for PIO

z8530_sync_close — Close a PIO Z8530 channel

z8530_sync_dma_open — Open a Z8530 for DMA I/O

z8530_sync_dma_close — Close down DMA I/O

z8530_sync_txdma_open — Open a Z8530 for TX driven DMA

z8530_sync_txdma_close — Close down a TX driven DMA channel

z8530_describe — Uniformly describe a Z8530 port

z8530_init — Initialise a Z8530 device

z8530_shutdown — Shutdown a Z8530 device

z8530_channel_load — Load channel data

z8530_null_rx — Discard a packet

z8530_queue_xmit — Queue a packet

10. Internal Functions

z8530_read_port — Architecture specific interface function

z8530_write_port — Architecture specific interface function

read_zsreg — Read a register from a Z85230

read_zsdata — Read the data port of a Z8530 channel

write_zsreg — Write to a Z8530 channel register

write_zsctrl — Write to a Z8530 control register

write_zsdata — Write to a Z8530 control register

z8530_flush_fifo — Flush on chip RX FIFO

z8530_rtsdtr — Control the outgoing DTS/RTS line

z8530_rx — Handle a PIO receive event

z8530_tx — Handle a PIO transmit event

z8530_status — Handle a PIO status exception

z8530_dma_rx — Handle a DMA RX event

z8530_dma_tx — Handle a DMA TX event

z8530_dma_status — Handle a DMA status exception

z8530_rx_clear — Handle RX events from a stopped chip

z8530_tx_clear — Handle TX events from a stopped chip

z8530_status_clear — Handle status events from a stopped chip

z8530_tx_begin — Begin packet transmission

z8530_tx_done — TX complete callback

z8530_rx_done — Receive completion callback

spans_boundary — Check a packet can be ISA DMA'd