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freebsd-skq/sys/dev/pdq/pdq_freebsd.h
rwatson 60909669f0 In order to reduce use of M_EXT outside of the mbuf allocator and 
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
2015-01-06 12:59:37 +00:00

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/* $NetBSD: pdqvar.h,v 1.27 2000/05/03 19:17:54 thorpej Exp $ */
/*-
* Copyright (c) 1995, 1996 Matt Thomas <matt@3am-software.com>
* All rights reserved.
*
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
* Id: pdqvar.h,v 1.21 1997/03/21 21:16:04 thomas Exp
* $FreeBSD$
*
*/
/*
* DEC PDQ FDDI Controller; PDQ O/S dependent definitions
*
* Written by Matt Thomas
*
*/
#if defined(PDQ_HWSUPPORT)
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/malloc.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_arp.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/fddi.h>
#include <net/bpf.h>
#include <vm/vm.h> /* for vtophys */
#include <vm/pmap.h> /* for vtophys */
#endif /* PDQ_HWSUPPORT */
typedef struct _pdq_t pdq_t;
typedef struct _pdq_csrs_t pdq_csrs_t;
typedef struct _pdq_pci_csrs_t pdq_pci_csrs_t;
typedef struct _pdq_lanaddr_t pdq_lanaddr_t;
typedef unsigned int pdq_uint32_t;
typedef unsigned short pdq_uint16_t;
typedef unsigned char pdq_uint8_t;
typedef enum _pdq_boolean_t pdq_boolean_t;
typedef enum _pdq_type_t pdq_type_t;
typedef enum _pdq_state_t pdq_state_t;
typedef struct mbuf PDQ_OS_DATABUF_T;
typedef bus_space_tag_t pdq_bus_t;
typedef bus_space_handle_t pdq_bus_memaddr_t;
typedef pdq_bus_memaddr_t pdq_bus_memoffset_t;
extern devclass_t pdq_devclass;
enum _pdq_type_t {
PDQ_DEFPA, /* PCI-bus */
PDQ_DEFEA, /* EISA-bus */
PDQ_DEFTA, /* TurboChannel */
PDQ_DEFAA, /* FutureBus+ */
PDQ_DEFQA /* Q-bus */
};
#define sc_ifmedia ifmedia
#if 0 /* ALTQ */
#define IFQ_DEQUEUE IF_DEQUEUE
#define IFQ_IS_EMPTY(q) ((q)->ifq_len == 0)
#endif
typedef struct _pdq_os_ctx_t {
struct ifnet *ifp;
struct ifmedia ifmedia;
device_t dev;
int debug;
pdq_t * sc_pdq;
int sc_flags;
#define PDQIF_DOWNCALL 0x0001 /* active calling from if to pdq */
struct resource * io;
int io_rid;
int io_type;
bus_space_handle_t io_bsh;
bus_space_tag_t io_bst;
struct resource * mem;
int mem_rid;
int mem_type;
bus_space_handle_t mem_bsh;
bus_space_tag_t mem_bst;
struct resource * irq;
int irq_rid;
void * irq_ih;
struct mtx mtx;
struct callout watchdog;
int timer;
} pdq_softc_t;
#define PDQ_LOCK(_sc) mtx_lock(&(_sc)->mtx)
#define PDQ_UNLOCK(_sc) mtx_unlock(&(_sc)->mtx)
#define PDQ_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->mtx, MA_OWNED)
#define PDQ_OS_HDR_OFFSET PDQ_RX_FC_OFFSET
#define PDQ_OS_PAGESIZE PAGE_SIZE
#define PDQ_OS_TX_TRANSMIT 5
#define PDQ_OS_IORD_32(bt, bh, off) bus_space_read_4(bt, bh, off)
#define PDQ_OS_IOWR_32(bt, bh, off, data) bus_space_write_4(bt, bh, off, data)
#define PDQ_OS_IORD_8(bt, bh, off) bus_space_read_1(bt, bh, off)
#define PDQ_OS_IOWR_8(bt, bh, off, data) bus_space_write_1(bt, bh, off, data)
#define PDQ_CSR_OFFSET(base, offset) (0 + (offset)*sizeof(pdq_uint32_t))
#define PDQ_CSR_WRITE(csr, name, data) PDQ_OS_IOWR_32((csr)->csr_bus, (csr)->csr_base, (csr)->name, data)
#define PDQ_CSR_READ(csr, name) PDQ_OS_IORD_32((csr)->csr_bus, (csr)->csr_base, (csr)->name)
#define PDQ_OS_DATABUF_FREE(pdq, b) (m_freem(b))
#if defined(PDQ_OSSUPPORT)
#define PDQ_OS_TX_TIMEOUT 5 /* seconds */
#define PDQ_OS_IFP_TO_SOFTC(ifp) ((pdq_softc_t *) (ifp)->if_softc)
#define PDQ_BPF_MTAP(sc, m) BPF_MTAP((sc)->ifp, m)
#define PDQ_IFNET(sc) ((sc)->ifp)
#endif /* PDQ_OSSUPPORT */
#if defined(PDQ_HWSUPPORT)
#define PDQ_OS_PREFIX "%s: "
#define PDQ_OS_PREFIX_ARGS pdq->pdq_os_name
#define PDQ_OS_PTR_FMT "%p"
#define PDQ_OS_CSR_FMT "0x%x"
#define PDQ_OS_USEC_DELAY(n) DELAY(n)
#define PDQ_OS_VA_TO_BUSPA(pdq, p) vtophys(p)
#define PDQ_OS_MEMALLOC(n) malloc(n, M_DEVBUF, M_NOWAIT)
#define PDQ_OS_MEMFREE(p, n) free((void *) p, M_DEVBUF)
#define PDQ_OS_MEMZERO(p, n) bzero((caddr_t)(p), (n))
#define PDQ_OS_MEMALLOC_CONTIG(n) contigmalloc(n, M_DEVBUF, M_NOWAIT, 0x800000, ~0, PAGE_SIZE, 0)
#define PDQ_OS_MEMFREE_CONTIG(p, n) contigfree(p, n, M_DEVBUF)
#define PDQ_OS_DATABUF_SIZE (MCLBYTES)
#define PDQ_OS_DATABUF_NEXT(b) ((b)->m_next)
#define PDQ_OS_DATABUF_NEXT_SET(b, b1) ((b)->m_next = (b1))
#define PDQ_OS_DATABUF_NEXTPKT(b) ((b)->m_nextpkt)
#define PDQ_OS_DATABUF_NEXTPKT_SET(b, b1) ((b)->m_nextpkt = (b1))
#define PDQ_OS_DATABUF_LEN(b) ((b)->m_len)
#define PDQ_OS_DATABUF_LEN_SET(b, n) ((b)->m_len = (n))
/* #define PDQ_OS_DATABUF_LEN_ADJ(b, n) ((b)->m_len += (n)) */
#define PDQ_OS_DATABUF_PTR(b) (mtod((b), pdq_uint8_t *))
#define PDQ_OS_DATABUF_ADJ(b, n) ((b)->m_data += (n), (b)->m_len -= (n))
#define PDQ_OS_DATABUF_ALLOC(pdq, b) do { \
PDQ_OS_DATABUF_T *x_m0; \
MGETHDR(x_m0, M_NOWAIT, MT_DATA); \
if (x_m0 != NULL) { \
if (!(MCLGET(x_m0, M_NOWAIT))) { \
m_free(x_m0); \
(b) = NULL; \
} else { \
(b) = x_m0; \
x_m0->m_len = PDQ_OS_DATABUF_SIZE; \
} \
} else { \
(b) = NULL; \
} \
} while (0)
#define PDQ_OS_DATABUF_RESET(b) ((b)->m_data = (b)->m_ext.ext_buf, (b)->m_len = MCLBYTES)
#define PDQ_OS_DATABUF_ENQUEUE(q, b) do { \
PDQ_OS_DATABUF_NEXTPKT_SET(b, NULL); \
if ((q)->q_tail == NULL) \
(q)->q_head = (b); \
else \
PDQ_OS_DATABUF_NEXTPKT_SET(((PDQ_OS_DATABUF_T *)(q)->q_tail), b); \
(q)->q_tail = (b); \
} while (0)
#define PDQ_OS_DATABUF_DEQUEUE(q, b) do { \
if (((b) = (PDQ_OS_DATABUF_T *) (q)->q_head) != NULL) { \
if (((q)->q_head = PDQ_OS_DATABUF_NEXTPKT(b)) == NULL) \
(q)->q_tail = NULL; \
PDQ_OS_DATABUF_NEXTPKT_SET(b, NULL); \
} \
} while (0)
#define PDQ_OS_DATABUF_BUSPA(pdq, b) PDQ_OS_VA_TO_BUSPA(pdq, PDQ_OS_DATABUF_PTR(b))
#define PDQ_OS_CONSUMER_PRESYNC(pdq) do { } while(0)
#define PDQ_OS_CONSUMER_POSTSYNC(pdq) do { } while(0)
#define PDQ_OS_DESC_PRESYNC(pdq, d, s) do { } while(0)
#define PDQ_OS_DESC_POSTSYNC(pdq, d, s) do { } while(0)
#define PDQ_OS_CMDRQST_PRESYNC(pdq, s) do { } while(0)
#define PDQ_OS_CMDRQST_POSTSYNC(pdq, s) do { } while(0)
#define PDQ_OS_CMDRSP_PRESYNC(pdq, s) do { } while(0)
#define PDQ_OS_CMDRSP_POSTSYNC(pdq, s) do { } while(0)
#define PDQ_OS_RXPDU_PRESYNC(pdq, b, o, l) do { } while(0)
#define PDQ_OS_RXPDU_POSTSYNC(pdq, b, o, l) do { } while(0)
#define PDQ_OS_UNSOL_EVENT_PRESYNC(pdq, e) do { } while(0)
#define PDQ_OS_UNSOL_EVENT_POSTSYNC(pdq, e) do { } while(0)
#endif /* PDQ_HWSUPPORT */
/*
* OS dependent functions provided by pdq_ifsubr.c to pdq.c
*/
void pdq_os_addr_fill (pdq_t *pdq, pdq_lanaddr_t *addrs, size_t numaddrs);
void pdq_os_receive_pdu (pdq_t *, PDQ_OS_DATABUF_T *, size_t, int);
void pdq_os_restart_transmitter (pdq_t *pdq);
void pdq_os_transmit_done (pdq_t *, PDQ_OS_DATABUF_T *);
void pdq_os_update_status (pdq_t *, const void *);
/*
* Driver interfaces functions provided by pdq.c to pdq_ifsubr.c
*/
pdq_boolean_t pdq_queue_transmit_data (pdq_t *pdq, PDQ_OS_DATABUF_T *pdu);
void pdq_run (pdq_t *pdq);
pdq_state_t pdq_stop (pdq_t *pdq);
/*
* OS dependent functions provided by
* pdq_ifsubr.c or pdq.c to the bus front ends
*/
int pdq_ifattach (pdq_softc_t *, const pdq_uint8_t *,
pdq_type_t type);
void pdq_ifdetach (pdq_softc_t *);
void pdq_free (device_t);
int pdq_interrupt (pdq_t *pdq);
void pdq_hwreset (pdq_t *pdq);
pdq_t * pdq_initialize (pdq_bus_t bus, pdq_bus_memaddr_t csr_va,
const char *name, int unit,
void *ctx, pdq_type_t type);
/*
* Misc prototypes.
*/
void pdq_flush_transmitter(pdq_t *pdq);
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