Annotation of sys/arch/mac68k/dev/sbc_obio.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: sbc_obio.c,v 1.15 2006/12/13 21:12:56 miod Exp $ */
2: /* $NetBSD: sbc_obio.c,v 1.1 1997/03/01 20:18:59 scottr Exp $ */
3:
4: /*
5: * Copyright (C) 1996,1997 Scott Reynolds. All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by Scott Reynolds for
18: * the NetBSD Project.
19: * 4. The name of the author may not be used to endorse or promote products
20: * derived from this software without specific prior written permission
21: *
22: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32: */
33:
34: #include <sys/types.h>
35: #include <sys/param.h>
36: #include <sys/systm.h>
37: #include <sys/kernel.h>
38: #include <sys/errno.h>
39: #include <sys/device.h>
40: #include <sys/buf.h>
41: #include <sys/proc.h>
42: #include <sys/user.h>
43:
44: #include <scsi/scsi_all.h>
45: #include <scsi/scsi_debug.h>
46: #include <scsi/scsiconf.h>
47:
48: #include <dev/ic/ncr5380reg.h>
49: #include <dev/ic/ncr5380var.h>
50:
51: #include <machine/cpu.h>
52: #include <machine/viareg.h>
53:
54: #include "sbcreg.h"
55: #include "sbcvar.h"
56:
57: /*
58: * From Guide to the Macintosh Family Hardware, pp. 137-143
59: * These are offsets from SCSIBase (see pmap_bootstrap.c)
60: */
61: #define SBC_REG_OFS 0x10000
62: #define SBC_DMA_OFS 0x12000
63: #define SBC_HSK_OFS 0x06000
64:
65: #define SBC_DMA_OFS_PB500 0x06000
66:
67: #define SBC_REG_OFS_IIFX 0x08000 /* Just guessing... */
68: #define SBC_DMA_OFS_IIFX 0x0c000
69: #define SBC_HSK_OFS_IIFX 0x0e000
70:
71: #define SBC_REG_OFS_DUO2 0x00000
72: #define SBC_DMA_OFS_DUO2 0x02000
73: #define SBC_HSK_OFS_DUO2 0x04000
74:
75: static int sbc_obio_match(struct device *, void *, void *);
76: static void sbc_obio_attach(struct device *, struct device *, void *);
77:
78: void sbc_intr_enable(struct ncr5380_softc *);
79: void sbc_intr_disable(struct ncr5380_softc *);
80: void sbc_obio_clrintr(struct ncr5380_softc *);
81:
82: struct cfattach sbc_obio_ca = {
83: sizeof(struct sbc_softc), sbc_obio_match, sbc_obio_attach
84: };
85:
86: static int
87: sbc_obio_match(parent, vcf, args)
88: struct device *parent;
89: void *vcf;
90: void *args;
91: {
92: struct cfdata *cf = (struct cfdata *) vcf;
93:
94: switch (current_mac_model->machineid) {
95: case MACH_MACIIFX: /* Note: the IIfx isn't (yet) supported. */
96: break;
97: case MACH_MACPB210:
98: case MACH_MACPB230:
99: case MACH_MACPB250:
100: case MACH_MACPB270:
101: case MACH_MACPB280:
102: case MACH_MACPB280C:
103: if (cf->cf_unit == 1)
104: return 1;
105: /*FALLTHROUGH*/
106: default:
107: if (cf->cf_unit == 0 && mac68k_machine.scsi80)
108: return 1;
109: }
110: return 0;
111: }
112:
113: static void
114: sbc_obio_attach(parent, self, args)
115: struct device *parent, *self;
116: void *args;
117: {
118: struct sbc_softc *sc = (struct sbc_softc *) self;
119: struct ncr5380_softc *ncr_sc = (struct ncr5380_softc *) sc;
120: struct scsibus_attach_args saa;
121: extern vaddr_t SCSIBase;
122:
123: /* Pull in the options flags. */
124: sc->sc_options = ((ncr_sc->sc_dev.dv_cfdata->cf_flags | sbc_options)
125: & SBC_OPTIONS_MASK);
126:
127: /*
128: * Set up offsets to 5380 registers and GLUE I/O space, and turn
129: * off options we know we can't support on certain models.
130: */
131: switch (current_mac_model->machineid) {
132: case MACH_MACIIFX: /* Note: the IIfx isn't (yet) supported. */
133: sc->sc_regs = (struct sbc_regs *)(SCSIBase + SBC_REG_OFS_IIFX);
134: sc->sc_drq_addr = (vaddr_t)(SCSIBase + SBC_HSK_OFS_IIFX);
135: sc->sc_nodrq_addr = (vaddr_t)(SCSIBase + SBC_DMA_OFS_IIFX);
136: sc->sc_options &= ~(SBC_INTR | SBC_RESELECT);
137: break;
138: case MACH_MACPB500:
139: sc->sc_regs = (struct sbc_regs *)(SCSIBase + SBC_REG_OFS);
140: sc->sc_drq_addr = (vaddr_t)(SCSIBase + SBC_HSK_OFS); /*??*/
141: sc->sc_nodrq_addr = (vaddr_t)(SCSIBase + SBC_DMA_OFS_PB500);
142: sc->sc_options &= ~(SBC_INTR | SBC_RESELECT);
143: break;
144: case MACH_MACPB210:
145: case MACH_MACPB230:
146: case MACH_MACPB250:
147: case MACH_MACPB270:
148: case MACH_MACPB280:
149: case MACH_MACPB280C:
150: if (ncr_sc->sc_dev.dv_unit == 1) {
151: sc->sc_regs = (struct sbc_regs *)(0xfee00000 + SBC_REG_OFS_DUO2);
152: sc->sc_drq_addr = (vaddr_t)(0xfee00000 + SBC_HSK_OFS_DUO2);
153: sc->sc_nodrq_addr = (vaddr_t)(0xfee00000 + SBC_DMA_OFS_DUO2);
154: break;
155: }
156: /*FALLTHROUGH*/
157: default:
158: sc->sc_regs = (struct sbc_regs *)(SCSIBase + SBC_REG_OFS);
159: sc->sc_drq_addr = (vaddr_t)(SCSIBase + SBC_HSK_OFS);
160: sc->sc_nodrq_addr = (vaddr_t)(SCSIBase + SBC_DMA_OFS);
161: break;
162: }
163:
164: /*
165: * Fill in the prototype scsi_link.
166: */
167: ncr_sc->sc_link.adapter_softc = sc;
168: ncr_sc->sc_link.adapter_target = 7;
169: ncr_sc->sc_link.adapter = &sbc_ops;
170: ncr_sc->sc_link.device = &sbc_dev;
171: ncr_sc->sc_link.openings = 4;
172:
173: /*
174: * Initialize fields used by the MI code
175: */
176: ncr_sc->sci_r0 = &sc->sc_regs->sci_pr0.sci_reg;
177: ncr_sc->sci_r1 = &sc->sc_regs->sci_pr1.sci_reg;
178: ncr_sc->sci_r2 = &sc->sc_regs->sci_pr2.sci_reg;
179: ncr_sc->sci_r3 = &sc->sc_regs->sci_pr3.sci_reg;
180: ncr_sc->sci_r4 = &sc->sc_regs->sci_pr4.sci_reg;
181: ncr_sc->sci_r5 = &sc->sc_regs->sci_pr5.sci_reg;
182: ncr_sc->sci_r6 = &sc->sc_regs->sci_pr6.sci_reg;
183: ncr_sc->sci_r7 = &sc->sc_regs->sci_pr7.sci_reg;
184:
185: /*
186: * MD function pointers used by the MI code.
187: */
188: if (sc->sc_options & SBC_PDMA) {
189: ncr_sc->sc_pio_out = sbc_pdma_out;
190: ncr_sc->sc_pio_in = sbc_pdma_in;
191: } else {
192: ncr_sc->sc_pio_out = ncr5380_pio_out;
193: ncr_sc->sc_pio_in = ncr5380_pio_in;
194: }
195: ncr_sc->sc_dma_alloc = NULL;
196: ncr_sc->sc_dma_free = NULL;
197: ncr_sc->sc_dma_poll = NULL;
198: ncr_sc->sc_intr_on = NULL;
199: ncr_sc->sc_intr_off = NULL;
200: ncr_sc->sc_dma_setup = NULL;
201: ncr_sc->sc_dma_start = NULL;
202: ncr_sc->sc_dma_stop = NULL;
203: ncr_sc->sc_flags = 0;
204: ncr_sc->sc_min_dma_len = MIN_DMA_LEN;
205:
206: if (sc->sc_options & SBC_INTR) {
207: ncr_sc->sc_dma_alloc = sbc_dma_alloc;
208: ncr_sc->sc_dma_free = sbc_dma_free;
209: ncr_sc->sc_dma_poll = sbc_dma_poll;
210: ncr_sc->sc_dma_setup = sbc_dma_setup;
211: ncr_sc->sc_dma_start = sbc_dma_start;
212: ncr_sc->sc_dma_stop = sbc_dma_stop;
213:
214: sc->sc_ih_drq.vh_fn = sbc_drq_intr;
215: sc->sc_ih_drq.vh_arg = ncr_sc;
216: sc->sc_ih_drq.vh_ipl = VIA2_SCSIDRQ;
217: via2_register_irq(&sc->sc_ih_drq, ncr_sc->sc_dev.dv_xname);
218: }
219:
220: sc->sc_ih_irq.vh_fn = sbc_irq_intr;
221: sc->sc_ih_irq.vh_arg = ncr_sc;
222: sc->sc_ih_irq.vh_ipl = VIA2_SCSIIRQ;
223: via2_register_irq(&sc->sc_ih_irq, ncr_sc->sc_dev.dv_xname);
224: sc->sc_clrintr = sbc_obio_clrintr;
225:
226: if (sc->sc_options)
227: printf(": options=0x%x", sc->sc_options);
228: printf("\n");
229:
230: /* Enable SCSI interrupts through VIA2 */
231: sbc_intr_enable(ncr_sc);
232:
233: #ifdef SBC_DEBUG
234: if (sbc_debug)
235: printf("%s: softc=%p regs=%p\n", ncr_sc->sc_dev.dv_xname,
236: sc, sc->sc_regs);
237: ncr_sc->sc_link.flags |= sbc_link_flags;
238: #endif
239:
240: bzero(&saa, sizeof(saa));
241: saa.saa_sc_link = &(ncr_sc->sc_link);
242:
243: /*
244: * Initialize the SCSI controller itself.
245: */
246: ncr5380_init(ncr_sc);
247: ncr5380_reset_scsibus(ncr_sc);
248: config_found(self, &saa, scsiprint);
249: }
250:
251: /*
252: * Interrupt support routines.
253: */
254: void
255: sbc_intr_enable(ncr_sc)
256: struct ncr5380_softc *ncr_sc;
257: {
258: struct sbc_softc *sc = (struct sbc_softc *)ncr_sc;
259: int s, flags;
260:
261: flags = V2IF_SCSIIRQ;
262: if (sc->sc_options & SBC_INTR)
263: flags |= V2IF_SCSIDRQ;
264:
265: s = splhigh();
266: if (VIA2 == VIA2OFF)
267: via2_reg(vIER) = 0x80 | flags;
268: else
269: via2_reg(rIER) = 0x80 | flags;
270: splx(s);
271: }
272:
273: void
274: sbc_intr_disable(ncr_sc)
275: struct ncr5380_softc *ncr_sc;
276: {
277: struct sbc_softc *sc = (struct sbc_softc *)ncr_sc;
278: int s, flags;
279:
280: flags = V2IF_SCSIIRQ;
281: if (sc->sc_options & SBC_INTR)
282: flags |= V2IF_SCSIDRQ;
283:
284: s = splhigh();
285: if (VIA2 == VIA2OFF)
286: via2_reg(vIER) = flags;
287: else
288: via2_reg(rIER) = flags;
289: splx(s);
290: }
291:
292: void
293: sbc_obio_clrintr(ncr_sc)
294: struct ncr5380_softc *ncr_sc;
295: {
296: struct sbc_softc *sc = (struct sbc_softc *)ncr_sc;
297: int flags;
298:
299: flags = V2IF_SCSIIRQ;
300: if (sc->sc_options & SBC_INTR)
301: flags |= V2IF_SCSIDRQ;
302:
303: if (VIA2 == VIA2OFF)
304: via2_reg(vIFR) = 0x80 | flags;
305: else
306: via2_reg(rIFR) = 0x80 | flags;
307: }
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