1 /*- 2 * Copyright (c) 2000 Michael Smith 3 * Copyright (c) 2003 Paul Saab 4 * Copyright (c) 2003 Vinod Kashyap 5 * Copyright (c) 2000 BSDi 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: src/sys/dev/twe/twe_compat.h,v 1.17 2012/11/17 01:52:19 svnexp Exp $ 30 */ 31 /* 32 * Portability and compatibility interfaces. 33 */ 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/malloc.h> 38 #include <sys/kernel.h> 39 #include <sys/lock.h> 40 #include <sys/sysctl.h> 41 #include <sys/buf2.h> 42 #include <sys/bus.h> 43 #include <sys/conf.h> 44 #include <sys/disk.h> 45 #include <sys/stat.h> 46 #include <sys/rman.h> 47 #include <sys/devicestat.h> 48 49 #include <bus/pci/pcireg.h> 50 #include <bus/pci/pcivar.h> 51 52 #define TWE_DRIVER_NAME twe 53 #define TWED_DRIVER_NAME twed 54 #define TWE_MALLOC_CLASS M_TWE 55 56 /* 57 * Wrappers for bus-space actions 58 */ 59 #define TWE_CONTROL(sc, val) bus_write_4((sc)->twe_io, 0x0, (u_int32_t)val) 60 #define TWE_STATUS(sc) (u_int32_t)bus_read_4((sc)->twe_io, 0x4) 61 #define TWE_COMMAND_QUEUE(sc, val) bus_write_4((sc)->twe_io, 0x8, (u_int32_t)val) 62 #define TWE_RESPONSE_QUEUE(sc) bus_read_4((sc)->twe_io, 0xc) 63 64 /* 65 * FreeBSD-specific softc elements 66 */ 67 #define TWE_PLATFORM_SOFTC \ 68 bus_dmamap_t twe_cmdmap; /* DMA map for command */ \ 69 u_int32_t twe_cmdphys; /* address of command in controller space */ \ 70 device_t twe_dev; /* bus device */ \ 71 cdev_t twe_dev_t; /* control device */ \ 72 struct resource *twe_io; /* register interface window */ \ 73 bus_dma_tag_t twe_parent_dmat; /* parent DMA tag */ \ 74 bus_dma_tag_t twe_buffer_dmat; /* data buffer DMA tag */ \ 75 bus_dma_tag_t twe_cmd_dmat; /* command buffer DMA tag */ \ 76 bus_dma_tag_t twe_immediate_dmat; /* command buffer DMA tag */ \ 77 struct resource *twe_irq; /* interrupt */ \ 78 void *twe_intr; /* interrupt handle */ \ 79 struct intr_config_hook twe_ich; /* delayed-startup hook */ \ 80 void *twe_cmd; /* command structures */ \ 81 void *twe_immediate; /* immediate commands */ \ 82 bus_dmamap_t twe_immediate_map; \ 83 struct sysctl_ctx_list sysctl_ctx; \ 84 struct sysctl_oid *sysctl_tree; \ 85 struct lock twe_io_lock; \ 86 struct lock twe_config_lock; 87 88 /* 89 * FreeBSD-specific request elements 90 */ 91 #define TWE_PLATFORM_REQUEST \ 92 bus_dmamap_t tr_dmamap; /* DMA map for data */ \ 93 u_int32_t tr_dataphys; /* data buffer base address in controller space */ 94 95 /* 96 * Output identifying the controller/disk 97 */ 98 #define twe_printf(sc, fmt, args...) device_printf(sc->twe_dev, fmt , ##args) 99 #define twed_printf(twed, fmt, args...) device_printf(twed->twed_dev, fmt , ##args) 100 101 #define TWE_IO_LOCK(sc) lockmgr(&(sc)->twe_io_lock, LK_EXCLUSIVE) 102 #define TWE_IO_UNLOCK(sc) lockmgr(&(sc)->twe_io_lock, LK_RELEASE) 103 #define TWE_CONFIG_LOCK(sc) lockmgr(&(sc)->twe_config_lock, LK_EXCLUSIVE) 104 #define TWE_CONFIG_UNLOCK(sc) lockmgr(&(sc)->twe_config_lock, LK_RELEASE) 105 #define TWE_CONFIG_ASSERT_LOCKED(sc) KKASSERT(lockowned(&(sc)->twe_config_lock)) 106 107 /* 108 * XXX 109 * 110 * Mimics FreeBSD's mtx_assert() behavior. 111 * We might want a global lockassert() function in the future. 112 */ 113 static __inline void 114 twe_lockassert(struct lock *lockp) 115 { 116 if (panicstr == NULL && !dumping) 117 KKASSERT(lockstatus(lockp, curthread) != 0); 118 } 119