wdc_xsurf.c revision 1.4
1 /* $NetBSD: wdc_xsurf.c,v 1.4 2017/09/04 17:26:06 phx Exp $ */ 2 3 /*- 4 * Copyright (c) 2012 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Radoslaw Kujawa. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* Driver for IDE controller present on X-Surf. */ 33 34 #include <sys/cdefs.h> 35 36 #include <sys/systm.h> 37 #include <sys/types.h> 38 #include <sys/device.h> 39 #include <sys/bus.h> 40 #include <sys/conf.h> 41 #include <sys/kmem.h> 42 43 #include <machine/cpu.h> 44 45 #include <amiga/amiga/device.h> 46 47 #include <dev/ata/atavar.h> 48 #include <dev/ic/wdcvar.h> 49 50 #include <amiga/dev/zbusvar.h> 51 #include <amiga/dev/xsurfvar.h> 52 53 #define WDC_XSURF_CHANNELS 2 54 #define WDC_XSURF_CHANSIZE 0x30 55 #define WDC_XSURF_CHANOFF 0x2000 56 57 #define WDC_XSURF_ISR_OFF 0x7E 58 #define WDC_XSURF_ISR_HIGH 0x80 59 60 #define WDC_XSURF_OFF_DATA 0x0 61 #define WDC_XSURF_OFF_ERROR 0x6 62 #define WDC_XSURF_OFF_SECCNT 0xA 63 #define WDC_XSURF_OFF_SECTOR 0xE 64 #define WDC_XSURF_OFF_CYL_LO 0x12 65 #define WDC_XSURF_OFF_CYL_HI 0x16 66 #define WDC_XSURF_OFF_SDH 0x1A 67 #define WDC_XSURF_OFF_COMMAND 0x1E 68 69 struct wdc_xsurf_port { 70 struct ata_channel channel; 71 struct ata_queue queue; 72 struct wdc_regs wdr; 73 }; 74 75 struct wdc_xsurf_softc { 76 struct wdc_softc sc_wdcdev; 77 struct ata_channel *sc_chanarray[WDC_XSURF_CHANNELS]; 78 struct wdc_xsurf_port sc_ports[WDC_XSURF_CHANNELS]; 79 80 struct bus_space_tag sc_bst; 81 bus_space_tag_t sc_cmdt; 82 bus_space_handle_t sc_isrh; 83 84 struct isr sc_isr; 85 }; 86 87 static int wdc_xsurf_match(device_t, cfdata_t, void *); 88 static void wdc_xsurf_attach(device_t, device_t, void *); 89 void wdc_xsurf_attach_channel(struct wdc_xsurf_softc *, int); 90 void wdc_xsurf_map_channel(struct wdc_xsurf_softc *, int); 91 int wdc_xsurf_intr(void *arg); 92 93 CFATTACH_DECL_NEW(wdc_xsurf, sizeof(struct wdc_xsurf_softc), 94 wdc_xsurf_match, wdc_xsurf_attach, NULL, NULL); 95 96 static const unsigned int wdc_xsurf_wdr_offsets[] = { 97 WDC_XSURF_OFF_DATA, WDC_XSURF_OFF_ERROR, WDC_XSURF_OFF_SECCNT, 98 WDC_XSURF_OFF_SECTOR, WDC_XSURF_OFF_CYL_LO, WDC_XSURF_OFF_CYL_HI, 99 WDC_XSURF_OFF_SDH, WDC_XSURF_OFF_COMMAND 100 }; 101 102 static int 103 wdc_xsurf_match(device_t parent, cfdata_t cf, void *aux) 104 { 105 struct xsurfbus_attach_args *xsb_aa = aux; 106 107 if (strcmp(xsb_aa->xaa_name, "wdc_xsurf") != 0) 108 return 0; 109 110 return 1; 111 } 112 113 static void 114 wdc_xsurf_attach(device_t parent, device_t self, void *aux) 115 { 116 struct wdc_xsurf_softc *sc; 117 struct xsurfbus_attach_args *xsb_aa; 118 int i; 119 120 aprint_normal("\n"); 121 aprint_naive("\n"); 122 xsb_aa = aux; 123 sc = device_private(self); 124 125 sc->sc_bst.base = xsb_aa->xaa_base; 126 sc->sc_bst.absm = &amiga_bus_stride_1swap; 127 sc->sc_cmdt = &sc->sc_bst; 128 129 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0; 130 sc->sc_wdcdev.sc_atac.atac_nchannels = WDC_XSURF_CHANNELS; 131 sc->sc_wdcdev.sc_atac.atac_dev = self; 132 sc->sc_wdcdev.sc_atac.atac_channels = sc->sc_chanarray; 133 sc->sc_wdcdev.sc_atac.atac_cap = ATAC_CAP_DATA16; 134 sc->sc_wdcdev.wdc_maxdrives = 2; 135 /* this controller has no aux control registers */ 136 sc->sc_wdcdev.cap = WDC_CAPABILITY_NO_AUXCTL; 137 138 /* attach the channels */ 139 wdc_allocate_regs(&sc->sc_wdcdev); 140 for (i = 0; i < WDC_XSURF_CHANNELS; i++) { 141 wdc_xsurf_attach_channel(sc, i); 142 } 143 144 /* map interrupt status register */ 145 bus_space_map(sc->sc_cmdt, WDC_XSURF_ISR_OFF, 146 1, 0, &sc->sc_isrh); 147 148 /* attach interrupt */ 149 sc->sc_isr.isr_intr = wdc_xsurf_intr; 150 sc->sc_isr.isr_arg = sc; 151 sc->sc_isr.isr_ipl = 2; 152 add_isr(&sc->sc_isr); 153 } 154 155 void 156 wdc_xsurf_attach_channel(struct wdc_xsurf_softc *sc, int chnum) 157 { 158 #ifdef WDC_XSURF_DEBUG 159 device_t self; 160 161 self = sc->sc_wdcdev.sc_atac.atac_dev; 162 #endif /* WDC_XSURF_DEBUG */ 163 164 sc->sc_chanarray[chnum] = &sc->sc_ports[chnum].channel; 165 memset(&sc->sc_ports[chnum],0,sizeof(struct wdc_xsurf_port)); 166 sc->sc_ports[chnum].channel.ch_channel = chnum; 167 sc->sc_ports[chnum].channel.ch_atac = &sc->sc_wdcdev.sc_atac; 168 sc->sc_ports[chnum].channel.ch_queue = &sc->sc_ports[chnum].queue; 169 170 wdc_xsurf_map_channel(sc, chnum); 171 172 wdc_init_shadow_regs(&sc->sc_ports[chnum].channel); 173 wdcattach(&sc->sc_ports[chnum].channel); 174 175 #ifdef WDC_XSURF_DEBUG 176 aprint_normal_dev(self, "done init for channel %d\n", chnum); 177 #endif /* WDC_XSURF_DEBUG */ 178 } 179 180 void 181 wdc_xsurf_map_channel(struct wdc_xsurf_softc *sc, int chnum) 182 { 183 struct wdc_regs *wdr; 184 int i; 185 186 wdr = CHAN_TO_WDC_REGS(&sc->sc_ports[chnum].channel); 187 188 /* map the registers */ 189 wdr->cmd_iot = sc->sc_cmdt; 190 bus_space_map(sc->sc_cmdt, chnum * WDC_XSURF_CHANOFF, 191 WDC_XSURF_CHANSIZE, 0, &wdr->cmd_baseioh); 192 193 for (i = 0; i < WDC_NREG; i++) 194 bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh, 195 wdc_xsurf_wdr_offsets[i], i == 0 ? 2 : 1, 196 &wdr->cmd_iohs[i]); 197 } 198 199 int 200 wdc_xsurf_intr(void *arg) 201 { 202 struct wdc_xsurf_softc *sc; 203 uint8_t intreq; 204 int r1, r2; 205 206 sc = (struct wdc_xsurf_softc *)arg; 207 r1 = r2 = 0; 208 209 intreq = bus_space_read_1(sc->sc_cmdt, sc->sc_isrh, 0); 210 bus_space_write_1(sc->sc_cmdt, sc->sc_isrh, 0, 0); /* pull A11 down */ 211 212 /* only one register for both channels... :/ */ 213 if (intreq & WDC_XSURF_ISR_HIGH) { 214 r1 = wdcintr(&sc->sc_ports[0].channel); 215 r2 = wdcintr(&sc->sc_ports[1].channel); 216 } 217 218 return r1 | r2; 219 } 220
Indexes created Sun Sep 28 16:09:52 GMT 2025