hnddma.h
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上传用户:yuanda199
上传日期:2022-06-26
资源大小:412k
文件大小:6k
源码类别:
VxWorks
开发平台:
C/C++
- /*
- Copyright 2001, Broadcom Corporation
- All Rights Reserved.
- This is UNPUBLISHED PROPRIETARY SOURCE CODE of Broadcom Corporation;
- the contents of this file may not be disclosed to third parties, copied or
- duplicated in any form, in whole or in part, without the prior written
- permission of Broadcom Corporation.
- */
- /*
- * Generic Broadcom Home Networking Division (HND) DMA engine definitions.
- * This supports the following chips: BCM42xx, 44xx, 47xx .
- *
- * $Id: hnddma.h,v 1.1 Broadcom SDK $
- * Copyright(c) 2001 Broadcom Corporation
- */
- #ifndef _hnddma_h_
- #define _hnddma_h_
- /*
- * Each DMA processor consists of a transmit channel and a receive channel.
- */
- typedef volatile struct {
- /* transmit channel */
- uint32 xmtcontrol; /* enable, et al */
- uint32 xmtaddr; /* descriptor ring base address (4K aligned) */
- uint32 xmtptr; /* last descriptor posted to chip */
- uint32 xmtstatus; /* current active descriptor, et al */
- /* receive channel */
- uint32 rcvcontrol; /* enable, et al */
- uint32 rcvaddr; /* descriptor ring base address (4K aligned) */
- uint32 rcvptr; /* last descriptor posted to chip */
- uint32 rcvstatus; /* current active descriptor, et al */
- } dmaregs_t;
- typedef volatile struct {
- /* diag access */
- uint32 fifoaddr; /* diag address */
- uint32 fifodatalow; /* low 32bits of data */
- uint32 fifodatahigh; /* high 32bits of data */
- uint32 pad; /* reserved */
- } dmafifo_t;
- /* transmit channel control */
- #define XC_XE ((uint32)1 << 0) /* transmit enable */
- #define XC_SE ((uint32)1 << 1) /* transmit suspend request */
- #define XC_LE ((uint32)1 << 2) /* loopback enable */
- #define XC_FPRI ((uint32)1 << 3) /* fair priority */
- #define XC_FL ((uint32)1 << 4) /* flush request */
- /* transmit descriptor table pointer */
- #define XP_LD_MASK 0xfff /* last valid descriptor */
- /* transmit channel status */
- #define XS_CD_MASK 0x0fff /* current descriptor pointer */
- #define XS_XS_MASK 0xf000 /* transmit state */
- #define XS_XS_SHIFT 12
- #define XS_XS_DISABLED 0x0000 /* disabled */
- #define XS_XS_ACTIVE 0x1000 /* active */
- #define XS_XS_IDLE 0x2000 /* idle wait */
- #define XS_XS_STOPPED 0x3000 /* stopped */
- #define XS_XS_SUSP 0x4000 /* suspend pending */
- #define XS_XE_MASK 0xf0000 /* transmit errors */
- #define XS_XE_SHIFT 16
- #define XS_XE_NOERR 0x00000 /* no error */
- #define XS_XE_DPE 0x10000 /* descriptor protocol error */
- #define XS_XE_DFU 0x20000 /* data fifo underrun */
- #define XS_XE_BEBR 0x30000 /* bus error on buffer read */
- #define XS_XE_BEDA 0x40000 /* bus error on descriptor access */
- #define XS_FL ((uint32)1 << 20) /* flushed */
- /* receive channel control */
- #define RC_RE ((uint32)1 << 0) /* receive enable */
- #define RC_RO_MASK 0xfe /* receive frame offset */
- #define RC_RO_SHIFT 1
- #define RC_FM ((uint32)1 << 8) /* direct fifo receive (pio) mode */
- /* receive descriptor table pointer */
- #define RP_LD_MASK 0xfff /* last valid descriptor */
- /* receive channel status */
- #define RS_CD_MASK 0x0fff /* current descriptor pointer */
- #define RS_RS_MASK 0xf000 /* receive state */
- #define RS_RS_SHIFT 12
- #define RS_RS_DISABLED 0x0000 /* disabled */
- #define RS_RS_ACTIVE 0x1000 /* active */
- #define RS_RS_IDLE 0x2000 /* idle wait */
- #define RS_RS_STOPPED 0x3000 /* reserved */
- #define RS_RE_MASK 0xf0000 /* receive errors */
- #define RS_RE_SHIFT 16
- #define RS_RE_NOERR 0x00000 /* no error */
- #define RS_RE_DPE 0x10000 /* descriptor protocol error */
- #define RS_RE_DFO 0x20000 /* data fifo overflow */
- #define RS_RE_BEBW 0x30000 /* bus error on buffer write */
- #define RS_RE_BEDA 0x40000 /* bus error on descriptor access */
- /* fifoaddr */
- #define FA_OFF_MASK 0xffff /* offset */
- #define FA_SEL_MASK 0xf0000 /* select */
- #define FA_SEL_SHIFT 16
- #define FA_SEL_XDD 0x00000 /* transmit dma data */
- #define FA_SEL_XDP 0x10000 /* transmit dma pointers */
- #define FA_SEL_RDD 0x40000 /* receive dma data */
- #define FA_SEL_RDP 0x50000 /* receive dma pointers */
- #define FA_SEL_XFD 0x80000 /* transmit fifo data */
- #define FA_SEL_XFP 0x90000 /* transmit fifo pointers */
- #define FA_SEL_RFD 0xc0000 /* receive fifo data */
- #define FA_SEL_RFP 0xd0000 /* receive fifo pointers */
- /*
- * DMA Descriptor
- * Descriptors are only read by the hardware, never written back.
- */
- typedef volatile struct {
- uint32 ctrl; /* misc control bits & bufcount */
- uint32 addr; /* data buffer address */
- } dmadd_t;
- /*
- * Each descriptor ring must be 4096byte aligned
- * and fit within a single 4096byte page.
- */
- #define DMAMAXRINGSZ 4096
- #define DMARINGALIGN 4096
- /* control flags */
- #define CTRL_BC_MASK 0x1fff /* buffer byte count */
- #define CTRL_EOT ((uint32)1 << 28) /* end of descriptor table */
- #define CTRL_IOC ((uint32)1 << 29) /* interrupt on completion */
- #define CTRL_EOF ((uint32)1 << 30) /* end of frame */
- #define CTRL_SOF ((uint32)1 << 31) /* start of frame */
- /* control flags in the range [27:20] are core-specific and not defined here */
- #define CTRL_CORE_MASK 0x0ff00000
- /* export structure */
- typedef volatile struct {
- /* rx error counters */
- uint rxgiants; /* rx giant frames */
- uint rxnobuf; /* rx out of dma descriptors */
- /* tx error counters */
- uint txnobuf; /* tx out of dma descriptors */
- } hnddma_t;
- #ifndef di_t
- #define di_t void
- #endif
- /* externs */
- extern void *dma_attach(void *drv, void *dev, char *name, dmaregs_t *dmaregs,
- uint ntxd, uint nrxd, uint rxbufsize, uint nrxpost, uint rxoffset,
- uint ddoffset, uint dataoffset, uint *msg_level);
- extern void dma_detach(di_t *di);
- extern void dma_txreset(di_t *di);
- extern void dma_rxreset(di_t *di);
- extern void dma_txinit(di_t *di);
- extern bool dma_txenabled(di_t *di);
- extern void dma_rxinit(di_t *di);
- extern void dma_rxenable(di_t *di);
- extern bool dma_rxenabled(di_t *di);
- extern void dma_txsuspend(di_t *di);
- extern void dma_txresume(di_t *di);
- extern bool dma_txsuspended(di_t *di);
- extern bool dma_txstopped(di_t *di);
- extern bool dma_rxstopped(di_t *di);
- extern int dma_txfast(di_t *di, void *p, uint32 coreflags);
- extern int dma_tx(di_t *di, void *p, uint32 coreflags);
- extern void dma_fifoloopbackenable(di_t *di);
- extern void *dma_rx(di_t *di);
- extern void dma_rxfill(di_t *di);
- extern void dma_txreclaim(di_t *di, bool forceall);
- extern void dma_rxreclaim(di_t *di);
- extern char *dma_dump(di_t *di, char *buf);
- extern uint dma_getvar(di_t *di, char *name);
- extern void *dma_getnexttxp(di_t *di, bool forceall);
- extern void *dma_getnextrxp(di_t *di, bool forceall);
- #endif /* _hnddma_h_ */