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freebsd/sys/dev/en/midwayreg.h
Kenjiro Cho 4f53e3cc7a update ATM driver. (base version: midway.c 1.67 --> 1.68) 
several new features are added:
	- support vc/vp shaping
	- support pvc shadow interface

code cleanup:
	- remove WMAYBE related code.  ENI WMAYBE DMA doen't work.
	- remove updating if_lastchange for every packet.
	- BPF related code is moved to midway.c as it should be.
	  (bpfwrite should work if atm_pseudohdr and LLC/SNAP are
	  prepended.)
	- BPF link type is changed to DLT_ATM_RFC1483.
	  BPF now understands only LLC/SNAP!! (because bpf can't
	  handle variable link header length.)
	  It is recommended to use LLC/SNAP instead of NULL
	  encapsulation for various reasons.  (BPF, IPv6,
	  interoperability, etc.)

the code has been used for months in ALTQ and KAME IPv6.

OKed by phk long time ago.
1998-07-29 05:35:16 +00:00

306 lines
10 KiB
C
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/* $NetBSD: midwayreg.h,v 1.6 1997/03/20 21:34:47 chuck Exp $ */
/*
* m i d w a y r e g . h
*
* this file contains the description of the ENI ATM midway chip
* data structures. see midway.c for more details.
*
*/
#if defined(sparc) || defined(__FreeBSD__)
/* XXX: gross. netbsd/sparc doesn't have machine/bus.h yet. */
typedef void * bus_space_tag_t;
typedef u_int32_t pci_chipset_tag_t;
typedef caddr_t bus_space_handle_t;
typedef u_int32_t bus_size_t;
typedef caddr_t bus_addr_t;
#define bus_space_read_4(t, h, o) ((void) t, \
(*(volatile u_int32_t *)((h) + (o))))
#define bus_space_write_4(t, h, o, v) \
((void) t, ((void)(*(volatile u_int32_t *)((h) + (o)) = (v))))
#if defined(sparc)
#define vtophys(x) ((u_int32_t)(x)) /* sun4c dvma */
#endif
#endif
#define MID_SZTOB(X) ((X) * 256 * 4) /* size to bytes */
#define MID_BTOSZ(X) ((X) / 256 / 4) /* bytes to "size" */
#define MID_N_VC 1024 /* # of VCs we can use */
#define MID_NTX_CH 8 /* 8 transmit channels (shared) */
#define MID_ATMDATASZ 48 /* need data in 48 byte blocks */
/*
* card data structures, top down
*
* in order to have a portable driver, the netbsd guys will not let us
* use structs. we have a bus_space_handle_t which is the en_base address.
* everything else is an offset from that base. all card data must be
* accessed with bus_space_read_4()/bus_space_write_4():
*
* rv = bus_space_read_4(sc->en_memt, sc->en_base, BYTE_OFFSET);
* bus_space_write_4(sc->en_memt, sc->en_base, BYTE_OFFSET, VALUE);
*
* en_card: the whole card (prom + phy + midway + obmem)
* obmem contains: vci tab + dma queues (rx & tx) + service list + bufs
*/
/* byte offsets from en_base of various items */
#define MID_PHYOFF 0x030000 /* PHY offset */
#define MID_MIDOFF 0x040000 /* midway regs offset */
#define MID_RAMOFF 0x200000 /* RAM offset */
#define MID_DRQOFF 0x204000 /* DRQ offset */
#define MID_DRQEND MID_DTQOFF /* DRQ end */
#define MID_DTQOFF 0x205000 /* DTQ offset */
#define MID_DTQEND MID_SLOFF /* DTQ end */
#define MID_SLOFF 0x206000 /* service list */
#define MID_SLEND MID_BUFOFF /* service list end */
#define MID_BUFOFF 0x207000 /* buffer area */
#define MID_PROBEOFF 0x21fffc /* start probe here */
#define MID_PROBSIZE 0x020000 /* 128 KB */
#define MID_MAXOFF 0x3ffffc /* max offset */
/*
* prom & phy: not defined here
*/
#define MID_ADPMACOFF 0xffc0 /* mac address offset (adaptec only) */
/*
* midway regs (byte offsets from en_base)
*/
#define MID_RESID 0x40000 /* write=reset reg, read=ID reg */
#define MID_VER(X) (((X) & 0xf0000000) >> 28) /* midway version # */
#define MID_MID(X) (((X) & 0x700) >> 8) /* motherboard ID */
#define MID_IS_SABRE(X) ((X) & 0x80) /* sabre controller? */
#define MID_IS_SUNI(X) ((X) & 0x40) /* SUNI? vs utopia */
#define MID_IS_UPIPE(X) ((X) & 0x20) /* utopia pipeline? */
#define MID_DID(X) ((X) & 0x1f) /* daughterboard ID */
#define MID_INTACK 0x40004 /* interrupt ACK */
#define MID_INTSTAT 0x40008 /* interrupt status */
#define MID_INTENA 0x4000c /* interrupt enable */
#define MID_TXCHAN(N) (1 << ((N) + 9)) /* ack/status/enable xmit channel bit*/
#define MID_INT_TX 0x1fe00 /* mask for any xmit interrupt */
#define MID_INT_DMA_OVR 0x00100 /* DMA overflow interrupt */
#define MID_INT_IDENT 0x00080 /* ident match error interrupt */
#define MID_INT_LERR 0x00040 /* LERR interrupt (sbus?) */
#define MID_INT_DMA_ERR 0x00020 /* DMA error interrupt */
#define MID_INT_DMA_RX 0x00010 /* DMA recv interrupt */
#define MID_INT_DMA_TX 0x00008 /* DMA xmit interrupt */
#define MID_INT_SERVICE 0x00004 /* service list interrupt */
#define MID_INT_SUNI 0x00002 /* SUNI interrupt */
#define MID_INT_STATS 0x00001 /* stats overflow interrupt */
#define MID_INT_ANY 0x1ffff /* any interrupt? */
#define MID_INTBITS "\20\21T7\20T6\17T5\16T4\15T3\14T2\13T1\12T0\11DMAOVR\10ID\7LERR\6DMAERR\5RXDMA\4TXDMA\3SERV\2SUNI\1STAT"
#define MID_MAST_CSR 0x40010 /* master CSR */
#define MID_IPL(X) (((X) & 0x1c0) >> 6) /* IPL */
#define MID_SETIPL(I) ((I) << 6)
#define MID_MCSR_TXLOCK 0x20 /* lock on xmit overflow mode */
/* NOTE: next 5 bits: write 1 means enable, write 0 means no change */
#define MID_MCSR_ENDMA 0x10 /* DMA enable */
#define MID_MCSR_ENTX 0x08 /* TX enable */
#define MID_MCSR_ENRX 0x04 /* RX enable */
#define MID_MCSR_W1MS 0x02 /* wait 1 msec */
#define MID_MCSR_W500US 0x01 /* wait 500 usec */
#define MID_MCSRBITS "\20\6LCK\5DMAON\4TXON\3RXON\2W1MS\1W500US"
#define MID_STAT 0x40014 /* stat register, clear on read */
#define MID_VTRASH(X) (((X) >> 16) & 0xffff)
/* # cells trashed due to VCI's mode */
#define MID_OTRASH(X) ((X) & 0xffff) /* # cells trashed due to overflow */
#define MID_SERV_WRITE 0x40018 /* 10 bit service write pointer (r/o) */
#define MID_DMA_ADDR 0x4001c /* VA of DMA (r/o) */
/* DMA queue pointers (bits 0 to 8) */
#define MID_DMA_WRRX 0x40020 /* write ptr. for DMA recv queue */
/* (for adaptor -> host xfers) */
#define MID_DMA_RDRX 0x40024 /* read ptr for DMA recv queue (r/o) */
/* (i.e. current adaptor->host xfer) */
#define MID_DMA_WRTX 0x40028 /* write ptr for DMA xmit queue */
/* (for host -> adaptor xfers) */
#define MID_DMA_RDTX 0x4002c /* read ptr for DMA xmit queue (r/o) */
/* (i.e. current host->adaptor xfer) */
/* xmit channel regs (1 per channel, MID_NTX_CH max channels) */
#define MIDX_PLACE(N) (0x40040+((N)*0x10)) /* xmit place */
#define MIDX_MKPLACE(SZ,LOC) ( ((SZ) << 11) | (LOC) )
#define MIDX_LOC(X) ((X) & 0x7ff) /* location in obmem */
#define MIDX_SZ(X) ((X) >> 11) /* (size of block / 256) in int32_t's*/
#define MIDX_BASE(X) \
(((MIDX_LOC(X) << MIDV_LOCTOPSHFT) * sizeof(u_int32_t)) + MID_RAMOFF)
/* the following two regs are word offsets in the block */
#define MIDX_READPTR(N) (0x40044+((N)*0x10)) /* xmit read pointer (r/o) */
#define MIDX_DESCSTART(N) (0x40048+((N)*0x10)) /* seg currently in DMA (r/o) */
/*
* obmem items
*/
/*
* vci table in obmem (offset from MID_VCTOFF)
*/
#define MID_VC(N) (MID_RAMOFF+((N)*0x10))
#define MIDV_TRASH 0x00000000 /* ignore VC */
#define MIDV_AAL5 0x80000000 /* do AAL5 on it */
#define MIDV_NOAAL 0x40000000 /* do per-cell stuff on it */
#define MIDV_MASK 0xc0000000 /* mode mask */
#define MIDV_SETMODE(VC,M) (((VC) & ~(MIDV_MASK)) | (M)) /* new mode */
#define MIDV_PTI 0x20000000 /* save PTI cells? */
#define MIDV_LOCTOPSHFT 8 /* shift to get top 11 bits of 19 */
#define MIDV_LOCSHIFT 18
#define MIDV_LOCMASK 0x7ff
#define MIDV_LOC(X) (((X) >> MIDV_LOCSHIFT) & MIDV_LOCMASK)
/* 11 most sig bits of addr */
#define MIDV_SZSHIFT 15
#define MIDV_SZ(X) (((X) >> MIDV_SZSHIFT) & 7)
/* size encoded the usual way */
#define MIDV_INSERVICE 0x1 /* in service list */
#define MID_DST_RP(N) (MID_VC(N)|0x4)
#define MIDV_DSTART_SHIFT 16 /* shift */
#define MIDV_DSTART(X) (((X) >> MIDV_DSTART_SHIFT) & 0x7fff)
#define MIDV_READP_MASK 0x7fff /* valid bits, (shift = 0) */
#define MID_WP_ST_CNT(N) (MID_VC(N)|0x8) /* write pointer/state/count */
#define MIDV_WRITEP_MASK 0x7fff0000 /* mask for write ptr. */
#define MIDV_WRITEP_SHIFT 16
#define MIDV_ST_IDLE 0x0000
#define MIDV_ST_TRASH 0xc000
#define MIDV_ST_REASS 0x4000
#define MIDV_CCOUNT 0x7ff /* cell count */
#define MID_CRC(N) (MID_VC(N)|0xc) /* CRC */
/*
* dma recv q.
*/
#define MID_DMA_END (1 << 5) /* for both tx and rx */
#define MID_DMA_CNT(X) (((X) >> 16) & 0xffff)
#define MID_DMA_TXCHAN(X) (((X) >> 6) & 0x7)
#define MID_DMA_RXVCI(X) (((X) >> 6) & 0x3ff)
#define MID_DMA_TYPE(X) ((X) & 0xf)
#define MID_DRQ_N 512 /* # of descriptors */
#define MID_DRQ_A2REG(N) (((N) - MID_DRQOFF) >> 3)
/* convert byte offset to reg value */
#define MID_DRQ_REG2A(N) (((N) << 3) + MID_DRQOFF) /* and back */
/* note: format of word 1 of RXQ is different beween ENI and ADP cards */
#define MID_MK_RXQ_ENI(CNT,VC,END,TYPE) \
( ((CNT) << 16)|((VC) << 6)|(END)|(TYPE) )
#define MID_MK_RXQ_ADP(CNT,VC,END,JK) \
( ((CNT) << 12)|((VC) << 2)|((END) >> 4)|(((JK) != 0) ? 1 : 0))
/*
* dma xmit q.
*/
#define MID_DTQ_N 512 /* # of descriptors */
#define MID_DTQ_A2REG(N) (((N) - MID_DTQOFF) >> 3)
/* convert byte offset to reg value */
#define MID_DTQ_REG2A(N) (((N) << 3) + MID_DTQOFF) /* and back */
/* note: format of word 1 of TXQ is different beween ENI and ADP cards */
#define MID_MK_TXQ_ENI(CNT,CHN,END,TYPE) \
( ((CNT) << 16)|((CHN) << 6)|(END)|(TYPE) )
#define MID_MK_TXQ_ADP(CNT,CHN,END,JK) \
( ((CNT) << 12)|((CHN) << 2)|((END) >> 4)|(((JK) != 0) ? 1 : 0) )
/*
* dma types
*/
#define MIDDMA_JK 0x3 /* just kidding */
#define MIDDMA_BYTE 0x1 /* byte */
#define MIDDMA_2BYTE 0x2 /* 2 bytes */
#define MIDDMA_WORD 0x0 /* word */
#define MIDDMA_2WORD 0x7 /* 2 words */
#define MIDDMA_4WORD 0x4 /* 4 words */
#define MIDDMA_8WORD 0x5 /* 8 words */
#define MIDDMA_16WORD 0x6 /* 16 words!!! */
#define MIDDMA_2WMAYBE 0xf /* 2 words, maybe */
#define MIDDMA_4WMAYBE 0xc /* 4 words, maybe */
#define MIDDMA_8WMAYBE 0xd /* 8 words, maybe */
#define MIDDMA_16WMAYBE 0xe /* 16 words, maybe */
#define MIDDMA_MAYBE 0xc /* mask to detect WMAYBE dma code */
#define MIDDMA_MAXBURST (16 * sizeof(u_int32_t)) /* largest burst */
/*
* service list
*/
#define MID_SL_N 1024 /* max # entries on slist */
#define MID_SL_A2REG(N) (((N) - MID_SLOFF) >> 2)
/* convert byte offset to reg value */
#define MID_SL_REG2A(N) (((N) << 2) + MID_SLOFF) /* and back */
/*
* data in the buffer area of obmem
*/
/*
* recv buffer desc. (1 u_int32_t at start of buffer)
*/
#define MID_RBD_SIZE 4 /* RBD size */
#define MID_CHDR_SIZE 4 /* on aal0, cell header size */
#define MID_RBD_ID(X) ((X) & 0xfe000000) /* get ID */
#define MID_RBD_STDID 0x36000000 /* standard ID */
#define MID_RBD_CLP 0x01000000 /* CLP: cell loss priority */
#define MID_RBD_CE 0x00010000 /* CE: congestion experienced */
#define MID_RBD_T 0x00001000 /* T: trashed due to overflow */
#define MID_RBD_CRCERR 0x00000800 /* CRC error */
#define MID_RBD_CNT(X) ((X) & 0x7ff) /* cell count */
/*
* xmit buffer desc. (2 u_int32_t's at start of buffer)
* (note we treat the PR & RATE as a single u_int8_t)
*/
#define MID_TBD_SIZE 8
#define MID_TBD_MK1(AAL,PR_RATE,CNT) \
(MID_TBD_STDID|(AAL)|((PR_RATE) << 19)|(CNT))
#define MID_TBD_STDID 0xb0000000 /* standard ID */
#define MID_TBD_AAL5 0x08000000 /* AAL 5 */
#define MID_TBD_NOAAL5 0x00000000 /* not AAL 5 */
#define MID_TBD_MK2(VCI,PTI,CLP) \
(((VCI) << 4)|((PTI) << 1)|(CLP))
/*
* aal5 pdu tail, last 2 words of last cell of AAL5 frame
* (word 2 is CRC .. handled by hw)
*/
#define MID_PDU_SIZE 8
#define MID_PDU_MK1(UU,CPI,LEN) \
(((UU) << 24)|((CPI) << 16)|(LEN))
#define MID_PDU_LEN(X) ((X) & 0xffff)
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