2a8c860fe3
socket-buffer implementations, introduce a return value for MCLGET() (and m_cljget() that underlies it) to allow the caller to avoid testing M_EXT itself. Update all callers to use the return value. With this change, very few network device drivers remain aware of M_EXT; the primary exceptions lie in mbuf-chain pretty printers for debugging, and in a few cases, custom mbuf and cluster allocation implementations. NB: This is a difficult-to-test change as it touches many drivers for which I don't have physical devices. Instead we've gone for intensive review, but further post-commit review would definitely be appreciated to spot errors where changes could not easily be made mechanically, but were largely mechanical in nature. Differential Revision: https://reviews.freebsd.org/D1440 Reviewed by: adrian, bz, gnn Sponsored by: EMC / Isilon Storage Division
274 lines
8.5 KiB
C
274 lines
8.5 KiB
C
/* $NetBSD: pdqvar.h,v 1.27 2000/05/03 19:17:54 thorpej Exp $ */
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/*-
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* Copyright (c) 1995, 1996 Matt Thomas <matt@3am-software.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Id: pdqvar.h,v 1.21 1997/03/21 21:16:04 thomas Exp
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* $FreeBSD$
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*
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*/
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/*
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* DEC PDQ FDDI Controller; PDQ O/S dependent definitions
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*
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* Written by Matt Thomas
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*
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*/
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#if defined(PDQ_HWSUPPORT)
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/malloc.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/if_arp.h>
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#include <net/if_dl.h>
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#include <net/if_media.h>
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#include <net/fddi.h>
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#include <net/bpf.h>
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#include <vm/vm.h> /* for vtophys */
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#include <vm/pmap.h> /* for vtophys */
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#endif /* PDQ_HWSUPPORT */
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typedef struct _pdq_t pdq_t;
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typedef struct _pdq_csrs_t pdq_csrs_t;
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typedef struct _pdq_pci_csrs_t pdq_pci_csrs_t;
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typedef struct _pdq_lanaddr_t pdq_lanaddr_t;
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typedef unsigned int pdq_uint32_t;
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typedef unsigned short pdq_uint16_t;
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typedef unsigned char pdq_uint8_t;
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typedef enum _pdq_boolean_t pdq_boolean_t;
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typedef enum _pdq_type_t pdq_type_t;
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typedef enum _pdq_state_t pdq_state_t;
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typedef struct mbuf PDQ_OS_DATABUF_T;
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typedef bus_space_tag_t pdq_bus_t;
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typedef bus_space_handle_t pdq_bus_memaddr_t;
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typedef pdq_bus_memaddr_t pdq_bus_memoffset_t;
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extern devclass_t pdq_devclass;
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enum _pdq_type_t {
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PDQ_DEFPA, /* PCI-bus */
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PDQ_DEFEA, /* EISA-bus */
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PDQ_DEFTA, /* TurboChannel */
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PDQ_DEFAA, /* FutureBus+ */
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PDQ_DEFQA /* Q-bus */
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};
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#define sc_ifmedia ifmedia
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#if 0 /* ALTQ */
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#define IFQ_DEQUEUE IF_DEQUEUE
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#define IFQ_IS_EMPTY(q) ((q)->ifq_len == 0)
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#endif
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typedef struct _pdq_os_ctx_t {
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struct ifnet *ifp;
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struct ifmedia ifmedia;
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device_t dev;
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int debug;
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pdq_t * sc_pdq;
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int sc_flags;
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#define PDQIF_DOWNCALL 0x0001 /* active calling from if to pdq */
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struct resource * io;
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int io_rid;
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int io_type;
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bus_space_handle_t io_bsh;
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bus_space_tag_t io_bst;
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struct resource * mem;
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int mem_rid;
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int mem_type;
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bus_space_handle_t mem_bsh;
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bus_space_tag_t mem_bst;
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struct resource * irq;
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int irq_rid;
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void * irq_ih;
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struct mtx mtx;
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struct callout watchdog;
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int timer;
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} pdq_softc_t;
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#define PDQ_LOCK(_sc) mtx_lock(&(_sc)->mtx)
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#define PDQ_UNLOCK(_sc) mtx_unlock(&(_sc)->mtx)
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#define PDQ_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->mtx, MA_OWNED)
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#define PDQ_OS_HDR_OFFSET PDQ_RX_FC_OFFSET
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#define PDQ_OS_PAGESIZE PAGE_SIZE
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#define PDQ_OS_TX_TRANSMIT 5
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#define PDQ_OS_IORD_32(bt, bh, off) bus_space_read_4(bt, bh, off)
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#define PDQ_OS_IOWR_32(bt, bh, off, data) bus_space_write_4(bt, bh, off, data)
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#define PDQ_OS_IORD_8(bt, bh, off) bus_space_read_1(bt, bh, off)
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#define PDQ_OS_IOWR_8(bt, bh, off, data) bus_space_write_1(bt, bh, off, data)
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#define PDQ_CSR_OFFSET(base, offset) (0 + (offset)*sizeof(pdq_uint32_t))
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#define PDQ_CSR_WRITE(csr, name, data) PDQ_OS_IOWR_32((csr)->csr_bus, (csr)->csr_base, (csr)->name, data)
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#define PDQ_CSR_READ(csr, name) PDQ_OS_IORD_32((csr)->csr_bus, (csr)->csr_base, (csr)->name)
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#define PDQ_OS_DATABUF_FREE(pdq, b) (m_freem(b))
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#if defined(PDQ_OSSUPPORT)
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#define PDQ_OS_TX_TIMEOUT 5 /* seconds */
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#define PDQ_OS_IFP_TO_SOFTC(ifp) ((pdq_softc_t *) (ifp)->if_softc)
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#define PDQ_BPF_MTAP(sc, m) BPF_MTAP((sc)->ifp, m)
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#define PDQ_IFNET(sc) ((sc)->ifp)
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#endif /* PDQ_OSSUPPORT */
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#if defined(PDQ_HWSUPPORT)
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#define PDQ_OS_PREFIX "%s: "
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#define PDQ_OS_PREFIX_ARGS pdq->pdq_os_name
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#define PDQ_OS_PTR_FMT "%p"
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#define PDQ_OS_CSR_FMT "0x%x"
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#define PDQ_OS_USEC_DELAY(n) DELAY(n)
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#define PDQ_OS_VA_TO_BUSPA(pdq, p) vtophys(p)
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#define PDQ_OS_MEMALLOC(n) malloc(n, M_DEVBUF, M_NOWAIT)
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#define PDQ_OS_MEMFREE(p, n) free((void *) p, M_DEVBUF)
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#define PDQ_OS_MEMZERO(p, n) bzero((caddr_t)(p), (n))
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#define PDQ_OS_MEMALLOC_CONTIG(n) contigmalloc(n, M_DEVBUF, M_NOWAIT, 0x800000, ~0, PAGE_SIZE, 0)
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#define PDQ_OS_MEMFREE_CONTIG(p, n) contigfree(p, n, M_DEVBUF)
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#define PDQ_OS_DATABUF_SIZE (MCLBYTES)
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#define PDQ_OS_DATABUF_NEXT(b) ((b)->m_next)
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#define PDQ_OS_DATABUF_NEXT_SET(b, b1) ((b)->m_next = (b1))
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#define PDQ_OS_DATABUF_NEXTPKT(b) ((b)->m_nextpkt)
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#define PDQ_OS_DATABUF_NEXTPKT_SET(b, b1) ((b)->m_nextpkt = (b1))
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#define PDQ_OS_DATABUF_LEN(b) ((b)->m_len)
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#define PDQ_OS_DATABUF_LEN_SET(b, n) ((b)->m_len = (n))
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/* #define PDQ_OS_DATABUF_LEN_ADJ(b, n) ((b)->m_len += (n)) */
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#define PDQ_OS_DATABUF_PTR(b) (mtod((b), pdq_uint8_t *))
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#define PDQ_OS_DATABUF_ADJ(b, n) ((b)->m_data += (n), (b)->m_len -= (n))
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#define PDQ_OS_DATABUF_ALLOC(pdq, b) do { \
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PDQ_OS_DATABUF_T *x_m0; \
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MGETHDR(x_m0, M_NOWAIT, MT_DATA); \
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if (x_m0 != NULL) { \
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if (!(MCLGET(x_m0, M_NOWAIT))) { \
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m_free(x_m0); \
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(b) = NULL; \
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} else { \
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(b) = x_m0; \
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x_m0->m_len = PDQ_OS_DATABUF_SIZE; \
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} \
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} else { \
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(b) = NULL; \
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} \
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} while (0)
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#define PDQ_OS_DATABUF_RESET(b) ((b)->m_data = (b)->m_ext.ext_buf, (b)->m_len = MCLBYTES)
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#define PDQ_OS_DATABUF_ENQUEUE(q, b) do { \
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PDQ_OS_DATABUF_NEXTPKT_SET(b, NULL); \
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if ((q)->q_tail == NULL) \
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(q)->q_head = (b); \
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else \
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PDQ_OS_DATABUF_NEXTPKT_SET(((PDQ_OS_DATABUF_T *)(q)->q_tail), b); \
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(q)->q_tail = (b); \
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} while (0)
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#define PDQ_OS_DATABUF_DEQUEUE(q, b) do { \
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if (((b) = (PDQ_OS_DATABUF_T *) (q)->q_head) != NULL) { \
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if (((q)->q_head = PDQ_OS_DATABUF_NEXTPKT(b)) == NULL) \
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(q)->q_tail = NULL; \
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PDQ_OS_DATABUF_NEXTPKT_SET(b, NULL); \
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} \
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} while (0)
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#define PDQ_OS_DATABUF_BUSPA(pdq, b) PDQ_OS_VA_TO_BUSPA(pdq, PDQ_OS_DATABUF_PTR(b))
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#define PDQ_OS_CONSUMER_PRESYNC(pdq) do { } while(0)
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#define PDQ_OS_CONSUMER_POSTSYNC(pdq) do { } while(0)
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#define PDQ_OS_DESC_PRESYNC(pdq, d, s) do { } while(0)
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#define PDQ_OS_DESC_POSTSYNC(pdq, d, s) do { } while(0)
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#define PDQ_OS_CMDRQST_PRESYNC(pdq, s) do { } while(0)
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#define PDQ_OS_CMDRQST_POSTSYNC(pdq, s) do { } while(0)
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#define PDQ_OS_CMDRSP_PRESYNC(pdq, s) do { } while(0)
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#define PDQ_OS_CMDRSP_POSTSYNC(pdq, s) do { } while(0)
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#define PDQ_OS_RXPDU_PRESYNC(pdq, b, o, l) do { } while(0)
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#define PDQ_OS_RXPDU_POSTSYNC(pdq, b, o, l) do { } while(0)
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#define PDQ_OS_UNSOL_EVENT_PRESYNC(pdq, e) do { } while(0)
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#define PDQ_OS_UNSOL_EVENT_POSTSYNC(pdq, e) do { } while(0)
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#endif /* PDQ_HWSUPPORT */
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/*
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* OS dependent functions provided by pdq_ifsubr.c to pdq.c
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*/
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void pdq_os_addr_fill (pdq_t *pdq, pdq_lanaddr_t *addrs, size_t numaddrs);
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void pdq_os_receive_pdu (pdq_t *, PDQ_OS_DATABUF_T *, size_t, int);
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void pdq_os_restart_transmitter (pdq_t *pdq);
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void pdq_os_transmit_done (pdq_t *, PDQ_OS_DATABUF_T *);
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void pdq_os_update_status (pdq_t *, const void *);
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/*
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* Driver interfaces functions provided by pdq.c to pdq_ifsubr.c
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*/
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pdq_boolean_t pdq_queue_transmit_data (pdq_t *pdq, PDQ_OS_DATABUF_T *pdu);
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void pdq_run (pdq_t *pdq);
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pdq_state_t pdq_stop (pdq_t *pdq);
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/*
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* OS dependent functions provided by
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* pdq_ifsubr.c or pdq.c to the bus front ends
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*/
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int pdq_ifattach (pdq_softc_t *, const pdq_uint8_t *,
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pdq_type_t type);
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void pdq_ifdetach (pdq_softc_t *);
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void pdq_free (device_t);
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int pdq_interrupt (pdq_t *pdq);
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void pdq_hwreset (pdq_t *pdq);
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pdq_t * pdq_initialize (pdq_bus_t bus, pdq_bus_memaddr_t csr_va,
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const char *name, int unit,
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void *ctx, pdq_type_t type);
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/*
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* Misc prototypes.
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*/
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void pdq_flush_transmitter(pdq_t *pdq);
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