1 /*- 2 * Copyright (c) 2004-2006 Marcel Moolenaar 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #ifndef _DEV_SCC_BFE_H_ 30 #define _DEV_SCC_BFE_H_ 31 32 #include <sys/serial.h> 33 34 /* 35 * Bus access structure. This structure holds the minimum information needed 36 * to access the SCC. The rclk field, although not important to actually 37 * access the SCC, is important for baudrate programming, delay loops and 38 * other timing related computations. 39 */ 40 struct scc_bas { 41 bus_space_tag_t bst; 42 bus_space_handle_t bsh; 43 u_int range; 44 u_int rclk; 45 u_int regshft; 46 }; 47 48 #define scc_regofs(bas, reg) ((reg) << (bas)->regshft) 49 50 #define scc_getreg(bas, reg) \ 51 bus_space_read_1((bas)->bst, (bas)->bsh, scc_regofs(bas, reg)) 52 #define scc_setreg(bas, reg, value) \ 53 bus_space_write_1((bas)->bst, (bas)->bsh, scc_regofs(bas, reg), value) 54 55 #define scc_barrier(bas) \ 56 bus_space_barrier((bas)->bst, (bas)->bsh, 0, (bas)->range, \ 57 BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE) 58 59 /* 60 * SCC mode (child) and channel control structures. 61 */ 62 63 #define SCC_NMODES 3 64 #define SCC_ISRCCNT 5 65 66 struct scc_chan; 67 68 struct scc_mode { 69 struct scc_chan *m_chan; 70 device_t m_dev; 71 72 u_int m_mode; 73 int m_attached:1; 74 int m_fastintr:1; 75 int m_hasintr:1; 76 int m_probed:1; 77 int m_sysdev:1; 78 79 driver_filter_t *ih; 80 serdev_intr_t *ih_src[SCC_ISRCCNT]; 81 void *ih_arg; 82 }; 83 84 struct scc_chan { 85 struct resource ch_rres; 86 struct resource_list ch_rlist; 87 88 struct resource *ch_ires; /* Interrupt resource. */ 89 void *ch_icookie; 90 int ch_irid; 91 92 struct scc_mode ch_mode[SCC_NMODES]; 93 94 u_int ch_nr; 95 int ch_sysdev:1; 96 97 uint32_t ch_ipend; 98 uint32_t ch_hwsig; 99 }; 100 101 /* 102 * SCC class & instance (=softc) 103 */ 104 struct scc_class { 105 KOBJ_CLASS_FIELDS; 106 u_int cl_channels; /* Number of independent channels. */ 107 u_int cl_class; /* SCC bus class ID. */ 108 u_int cl_modes; /* Supported modes (bitset). */ 109 int cl_range; 110 }; 111 112 extern struct scc_class scc_sab82532_class; 113 extern struct scc_class scc_z8530_class; 114 115 struct scc_softc { 116 KOBJ_FIELDS; 117 struct scc_class *sc_class; 118 struct scc_bas sc_bas; 119 device_t sc_dev; 120 121 struct mtx sc_hwmtx; /* Spinlock protecting hardware. */ 122 123 struct resource *sc_rres; /* Register resource. */ 124 int sc_rrid; 125 int sc_rtype; /* SYS_RES_{IOPORT|MEMORY}. */ 126 127 struct scc_chan *sc_chan; 128 129 int sc_fastintr:1; 130 int sc_leaving:1; 131 int sc_polled:1; 132 133 uint32_t sc_hwsig; /* Signal state. Used by HW driver. */ 134 }; 135 136 extern devclass_t scc_devclass; 137 extern char scc_driver_name[]; 138 139 int scc_bfe_attach(device_t dev); 140 int scc_bfe_detach(device_t dev); 141 int scc_bfe_probe(device_t dev, u_int, u_int); 142 143 struct resource *scc_bus_alloc_resource(device_t, device_t, int, int *, 144 u_long, u_long, u_long, u_int); 145 int scc_bus_get_resource(device_t, device_t, int, int, u_long *, u_long *); 146 int scc_bus_read_ivar(device_t, device_t, int, uintptr_t *); 147 int scc_bus_release_resource(device_t, device_t, int, int, struct resource *); 148 int scc_bus_setup_intr(device_t, device_t, struct resource *, int, 149 driver_filter_t *, void (*)(void *), void *, void **); 150 int scc_bus_teardown_intr(device_t, device_t, struct resource *, void *); 151 152 #endif /* _DEV_SCC_BFE_H_ */ 153