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Convert this driver to use the bus_dma interfaces.

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This commit is contained in:
thorpej 1998-01-28 07:26:42 +00:00
parent 5cafda5b3c
commit b89119c134
3 changed files with 628 additions and 553 deletions
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926
sys/dev/pci/if_fxp.c
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File diff suppressed because it is too large Load Diff

78
sys/dev/pci/if_fxpreg.h
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@ -1,4 +1,41 @@
/* $NetBSD: if_fxpreg.h,v 1.4 1997/10/20 01:15:55 thorpej Exp $ */
/* $NetBSD: if_fxpreg.h,v 1.5 1998/01/28 07:26:44 thorpej Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright (c) 1995, David Greenman
@ -96,17 +133,26 @@
#define FXP_SCB_COMMAND_RU_BASE 6
#define FXP_SCB_COMMAND_RU_RBDRESUME 7
/*
* Software-use only part of the command block.
*/
struct fxp_cb_soft {
void *next; /* pointer to next command block */
struct mbuf *mb_head; /* pointer to data for this command */
bus_dmamap_t dmamap; /* our DMA map */
};
/*
* Command block definitions
*/
struct fxp_cb_nop {
void *fill[2];
struct fxp_cb_soft cb_soft;
volatile u_int16_t cb_status;
volatile u_int16_t cb_command;
volatile u_int32_t link_addr;
};
struct fxp_cb_ias {
void *fill[2];
struct fxp_cb_soft cb_soft;
volatile u_int16_t cb_status;
volatile u_int16_t cb_command;
volatile u_int32_t link_addr;
@ -114,7 +160,7 @@ struct fxp_cb_ias {
};
/* I hate bit-fields :-( */
struct fxp_cb_config {
void *fill[2];
struct fxp_cb_soft cb_soft;
volatile u_int16_t cb_status;
volatile u_int16_t cb_command;
volatile u_int32_t link_addr;
@ -175,8 +221,7 @@ struct fxp_cb_config {
#define MAXMCADDR 80
struct fxp_cb_mcs {
struct fxp_cb_tx *next;
struct mbuf *mb_head;
struct fxp_cb_soft cb_soft;
volatile u_int16_t cb_status;
volatile u_int16_t cb_command;
volatile u_int32_t link_addr;
@ -185,25 +230,19 @@ struct fxp_cb_mcs {
};
/*
* Number of DMA segments in a TxCB. Note that this is carefully
* chosen to make the total struct size an even power of two. It's
* critical that no TxCB be split across a page boundry since
* no attempt is made to allocate physically contiguous memory.
*
* Number of DMA segments in a TxCB. The TxCB must map to a
* contiguous region from the DMA engine's perspective. Since
* we allocate memory conforming to those contraints, we can
* arbitrarily choose the number of segments.
*/
#ifdef __alpha__ /* XXX - should be conditional on pointer size */
#define FXP_NTXSEG 28
#else
#define FXP_NTXSEG 29
#endif
#define FXP_NTXSEG 32
struct fxp_tbd {
volatile u_int32_t tb_addr;
volatile u_int32_t tb_size;
};
struct fxp_cb_tx {
struct fxp_cb_tx *next;
struct mbuf *mb_head;
struct fxp_cb_soft cb_soft;
volatile u_int16_t cb_status;
volatile u_int16_t cb_command;
volatile u_int32_t link_addr;
@ -212,7 +251,8 @@ struct fxp_cb_tx {
volatile u_int8_t tx_threshold;
volatile u_int8_t tbd_number;
/*
* The following isn't actually part of the TxCB.
* The following isn't actually part of the TxCB, but we
* allocate it here for convenience.
*/
volatile struct fxp_tbd tbd[FXP_NTXSEG];
};

177
sys/dev/pci/if_fxpvar.h
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@ -1,12 +1,46 @@
/* $NetBSD: if_fxpvar.h,v 1.4 1998/01/22 08:32:35 thorpej Exp $ */
/* $NetBSD: if_fxpvar.h,v 1.5 1998/01/28 07:26:44 thorpej Exp $ */
/*-
* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright (c) 1995, David Greenman
* All rights reserved.
*
* Modifications to support NetBSD:
* Copyright (c) 1997 Jason R. Thorpe. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
@ -37,29 +71,104 @@
* Ethernet driver
*/
/*
* Number of transmit control blocks. This determines the number
* of transmit buffers that can be chained in the CB list. This
* must be a power of two.
*/
#define FXP_NTXCB 128
/*
* TxCB list index mask. This is used to do list wrap-around.
*/
#define FXP_TXCB_MASK (FXP_NTXCB - 1)
/*
* Number of receive frame area buffers. These are large, so
* choose wisely.
*/
#define FXP_NRFABUFS 64
/*
* Maximum number of seconds that the reciever can be idle before we
* assume it's dead and attempt to reset it by reprogramming the
* multicast filter. This is part of a work-around for a bug in the
* NIC. See fxp_stats_update().
*/
#define FXP_MAX_RX_IDLE 15
/*
* Misc. DMA'd data structures are allocated in a single clump, that
* maps to a single DMA segment, to make several things easier (computing
* offsets, setting up DMA maps, etc.)
*/
struct fxp_control_data {
/*
* The transmit control blocks. The first if these
* is also used as the config CB.
*/
struct fxp_cb_tx fcd_txcbs[FXP_NTXCB];
/*
* The multicast setup CB.
*/
struct fxp_cb_mcs fcd_mcscb;
/*
* The NIC statistics.
*/
struct fxp_stats fcd_stats;
};
#define FXP_CDOFF(x) offsetof(struct fxp_control_data, x)
/*
* Receive buffer descriptor (software only). This is the analog of
* the software portion of the fxp_cb_tx.
*/
struct fxp_rxdesc {
struct fxp_rxdesc *fr_next; /* next in the chain */
struct mbuf *fr_mbhead; /* pointer to mbuf chain */
bus_dmamap_t fr_dmamap; /* our DMA map */
};
struct fxp_softc {
#if defined(__NetBSD__)
struct device sc_dev; /* generic device structures */
void *sc_ih; /* interrupt handler cookie */
bus_space_tag_t sc_st; /* bus space tag */
bus_space_handle_t sc_sh; /* bus space handle */
bus_dma_tag_t sc_dmat; /* bus dma tag */
struct ethercom sc_ethercom; /* ethernet common part */
#else
struct arpcom arpcom; /* per-interface network data */
caddr_t csr; /* control/status registers */
struct callout_handle stat_ch; /* Handle for canceling our stat timeout */
#endif /* __NetBSD__ */
#define sc_if sc_ethercom.ec_if
/*
* We create a single DMA map that maps all data structure
* overhead, except for RFAs, which are mapped by the
* fxp_rxdesc DMA map on a per-mbuf basis.
*/
bus_dmamap_t sc_dmamap;
#define sc_cddma sc_dmamap->dm_segs[0].ds_addr
/*
* These DMA maps map transmit and recieve buffers.
*/
bus_dmamap_t sc_tx_dmamaps[FXP_NTXCB];
bus_dmamap_t sc_rx_dmamaps[FXP_NRFABUFS];
/*
* Control data - TxCBs, stats, etc.
*/
struct fxp_control_data *control_data;
struct fxp_rxdesc *sc_rxdescs; /* receive buffer descriptors */
struct ifmedia sc_media; /* media information */
struct fxp_cb_tx *cbl_base; /* base of TxCB list */
struct fxp_cb_tx *cbl_first; /* first active TxCB in list */
struct fxp_cb_tx *cbl_last; /* last active TxCB in list */
int tx_queued; /* # of active TxCB's */
int need_mcsetup; /* multicast filter needs programming */
struct mbuf *rfa_headm; /* first mbuf in receive frame area */
struct mbuf *rfa_tailm; /* last mbuf in receive frame area */
struct fxp_stats *fxp_stats; /* Pointer to interface stats */
struct fxp_rxdesc *rfa_head; /* first mbuf in receive frame area */
struct fxp_rxdesc *rfa_tail; /* last mbuf in receive frame area */
int rx_idle_secs; /* # of seconds RX has been idle */
struct fxp_cb_mcs *mcsp; /* Pointer to mcast setup descriptor */
int all_mcasts; /* receive all multicasts */
int promisc_mode; /* promiscuous mode enabled */
int phy_primary_addr; /* address of primary PHY */
@ -68,7 +177,6 @@ struct fxp_softc {
};
/* Macros to ease CSR access. */
#if defined(__NetBSD__)
#define CSR_READ_1(sc, reg) \
bus_space_read_1((sc)->sc_st, (sc)->sc_sh, (reg))
#define CSR_READ_2(sc, reg) \
@ -81,40 +189,3 @@ struct fxp_softc {
bus_space_write_2((sc)->sc_st, (sc)->sc_sh, (reg), (val))
#define CSR_WRITE_4(sc, reg, val) \
bus_space_write_4((sc)->sc_st, (sc)->sc_sh, (reg), (val))
#else
#define CSR_READ_1(sc, reg) \
(*((u_int8_t *)((sc)->csr + (reg))))
#define CSR_READ_2(sc, reg) \
(*((u_int16_t *)((sc)->csr + (reg))))
#define CSR_READ_4(sc, reg) \
(*((u_int32_t *)((sc)->csr + (reg))))
#define CSR_WRITE_1(sc, reg, val) \
(*((u_int8_t *)((sc)->csr + (reg)))) = (val)
#define CSR_WRITE_2(sc, reg, val) \
(*((u_int16_t *)((sc)->csr + (reg)))) = (val)
#define CSR_WRITE_4(sc, reg, val) \
(*((u_int32_t *)((sc)->csr + (reg)))) = (val)
#endif /* __NetBSD__ */
/* Deal with slight differences in software interfaces. */
#if defined(__NetBSD__)
#define sc_if sc_ethercom.ec_if
#define FXP_FORMAT "%s"
#define FXP_ARGS(sc) (sc)->sc_dev.dv_xname
#define FXP_INTR_TYPE int
#define FXP_IOCTLCMD_TYPE u_long
#define FXP_BPFTAP_ARG(ifp) (ifp)->if_bpf
#define FXP_TIMEOUT(sc, func, hz) \
timeout((func), (sc), (hz))
#define FXP_UNTIMEOUT(sc, func) untimeout((func), (sc))
#else /* __FreeBSD__ */
#define sc_if arpcom.ac_if
#define FXP_FORMAT "fxp%d"
#define FXP_ARGS(sc) (sc)->arpcom.ac_if.if_unit
#define FXP_INTR_TYPE void
#define FXP_IOCTLCMD_TYPE int
#define FXP_BPFTAP_ARG(ifp) ifp
#define FXP_TIMEOUT(sc, func, hz) \
(sc)->stat_ch = timeout((func), (sc), (hz))
#define FXP_UNTIMEOUT(sc, func) untimeout((func), (sc), (sc)->stat_ch)
#endif /* __NetBSD__ */