1 /* $NetBSD: lasi.c,v 1.5 2021/08/07 16:18:55 thorpej Exp $ */
2
3 /* $OpenBSD: lasi.c,v 1.4 2001/06/09 03:57:19 mickey Exp $ */
4
5 /*
6 * Copyright (c) 1998-2003 Michael Shalayeff
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
22 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
27 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
28 * THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include <sys/cdefs.h>
32 __KERNEL_RCSID(0, "$NetBSD: lasi.c,v 1.5 2021/08/07 16:18:55 thorpej Exp $");
33
34 #undef LASIDEBUG
35
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/device.h>
39 #include <sys/reboot.h>
40
41 #include <sys/bus.h>
42 #include <machine/iomod.h>
43 #include <machine/autoconf.h>
44
45 #include <hppa/dev/cpudevs.h>
46
47 #include <hppa/gsc/gscbusvar.h>
48
49 struct lasi_hwr {
50 uint32_t lasi_power;
51 #define LASI_BLINK 0x01
52 #define LASI_OFF 0x02
53 uint32_t lasi_error;
54 uint32_t lasi_version;
55 uint32_t lasi_reset;
56 uint32_t lasi_arbmask;
57 };
58
59 struct lasi_trs {
60 uint32_t lasi_irr; /* int requset register */
61 uint32_t lasi_imr; /* int mask register */
62 uint32_t lasi_ipr; /* int pending register */
63 uint32_t lasi_icr; /* int command? register */
64 uint32_t lasi_iar; /* int acquire? register */
65 };
66
67 #define LASI_BANK_SZ 0x200000
68 #define LASI_REG_INT 0x100000
69 #define LASI_REG_MISC 0x10c000
70
71 struct lasi_softc {
72 device_t sc_dev;
73
74 struct hppa_interrupt_register sc_ir;
75
76 struct lasi_hwr volatile *sc_hw;
77 struct lasi_trs volatile *sc_trs;
78 };
79
80 int lasimatch(device_t, cfdata_t, void *);
81 void lasiattach(device_t, device_t, void *);
82
83 CFATTACH_DECL_NEW(lasi, sizeof(struct lasi_softc),
84 lasimatch, lasiattach, NULL, NULL);
85
86 extern struct cfdriver lasi_cd;
87
88 void lasi_cold_hook(int);
89
90 /*
91 * Before a module is matched, this fixes up its gsc_attach_args.
92 */
93 static void lasi_fix_args(void *, struct gsc_attach_args *);
94 static void
lasi_fix_args(void * _sc,struct gsc_attach_args * ga)95 lasi_fix_args(void *_sc, struct gsc_attach_args *ga)
96 {
97 struct lasi_softc *sc = _sc;
98 hppa_hpa_t module_offset;
99
100 /*
101 * Determine this module's interrupt bit.
102 */
103 module_offset = ga->ga_hpa - (hppa_hpa_t) sc->sc_trs;
104 ga->ga_irq = HPPACF_IRQ_UNDEF;
105 #define LASI_IRQ(off, irq) if (module_offset == off) ga->ga_irq = irq
106 LASI_IRQ(0x2000, 7); /* lpt */
107 LASI_IRQ(0x4000, 13); /* harmony */
108 LASI_IRQ(0x4040, 16); /* harmony telephone0 */
109 LASI_IRQ(0x4060, 17); /* harmony telephone1 */
110 LASI_IRQ(0x5000, 5); /* com */
111 LASI_IRQ(0x6000, 9); /* osiop */
112 LASI_IRQ(0x7000, 8); /* ie */
113 LASI_IRQ(0x8000, 26); /* pckbc */
114 LASI_IRQ(0xa000, 20); /* fdc */
115 #undef LASI_IRQ
116
117 /*
118 * If this is the Ethernet adapter, get its Ethernet address.
119 */
120 if (module_offset == 0x7000) {
121 pdcproc_lan_station_id(ga->ga_ether_address,
122 sizeof(ga->ga_ether_address), ga->ga_hpa);
123 }
124 }
125
126 int
lasimatch(device_t parent,cfdata_t cf,void * aux)127 lasimatch(device_t parent, cfdata_t cf, void *aux)
128 {
129 struct confargs *ca = aux;
130
131 if (ca->ca_type.iodc_type != HPPA_TYPE_BHA ||
132 ca->ca_type.iodc_sv_model != HPPA_BHA_LASI)
133 return 0;
134
135 /*
136 * Forcibly mask the HPA down to the start of the LASI
137 * chip address space.
138 */
139 ca->ca_hpa &= ~(LASI_BANK_SZ - 1);
140
141 return 1;
142 }
143
144 void
lasiattach(device_t parent,device_t self,void * aux)145 lasiattach(device_t parent, device_t self, void *aux)
146 {
147 struct confargs *ca = aux;
148 struct lasi_softc *sc = device_private(self);
149 struct gsc_attach_args ga;
150 struct cpu_info *ci = &cpus[0];
151 bus_space_handle_t ioh;
152 int s;
153
154 sc->sc_dev = self;
155 /*
156 * Map the LASI interrupt registers.
157 */
158 if (bus_space_map(ca->ca_iot, ca->ca_hpa + LASI_REG_INT,
159 sizeof(struct lasi_trs), 0, &ioh)) {
160 aprint_error(": can't map interrupt registers\n");
161 return;
162 }
163 sc->sc_trs = (struct lasi_trs *)ioh;
164
165 /*
166 * Map the LASI miscellaneous registers.
167 */
168 if (bus_space_map(ca->ca_iot, ca->ca_hpa + LASI_REG_MISC,
169 sizeof(struct lasi_hwr), 0, &ioh)) {
170 aprint_error(": can't map misc registers\n");
171 return;
172 }
173 sc->sc_hw = (struct lasi_hwr *)ioh;
174
175 /* XXX should we reset the chip here? */
176
177 aprint_normal(": rev %d.%d\n", (sc->sc_hw->lasi_version & 0xf0) >> 4,
178 sc->sc_hw->lasi_version & 0xf);
179
180 ca->ca_irq = hppa_intr_allocate_bit(&ci->ci_ir, ca->ca_irq);
181 if (ca->ca_irq == HPPACF_IRQ_UNDEF) {
182 aprint_error(": can't allocate interrupt\n");
183 return;
184 }
185
186 /* interrupts guts */
187 s = splhigh();
188 sc->sc_trs->lasi_iar = ci->ci_hpa | (31 - ca->ca_irq);
189 sc->sc_trs->lasi_icr = 0;
190 sc->sc_trs->lasi_imr = 0;
191 (void)sc->sc_trs->lasi_irr;
192
193 /* Establish the interrupt register. */
194 hppa_interrupt_register_establish(ci, &sc->sc_ir);
195 sc->sc_ir.ir_name = device_xname(self);
196 sc->sc_ir.ir_mask = &sc->sc_trs->lasi_imr;
197 sc->sc_ir.ir_req = &sc->sc_trs->lasi_irr;
198 splx(s);
199
200 /* Attach the GSC bus. */
201 ga.ga_ca = *ca; /* clone from us */
202 if (strcmp(device_xname(parent), "mainbus0") == 0) {
203 ga.ga_dp.dp_bc[0] = ga.ga_dp.dp_bc[1];
204 ga.ga_dp.dp_bc[1] = ga.ga_dp.dp_bc[2];
205 ga.ga_dp.dp_bc[2] = ga.ga_dp.dp_bc[3];
206 ga.ga_dp.dp_bc[3] = ga.ga_dp.dp_bc[4];
207 ga.ga_dp.dp_bc[4] = ga.ga_dp.dp_bc[5];
208 ga.ga_dp.dp_bc[5] = ga.ga_dp.dp_mod;
209 ga.ga_dp.dp_mod = 0;
210 }
211
212 ga.ga_name = "gsc";
213 ga.ga_ir = &sc->sc_ir;
214 ga.ga_fix_args = lasi_fix_args;
215 ga.ga_fix_args_cookie = sc;
216 ga.ga_scsi_target = 7; /* XXX */
217 config_found(self, &ga, gscprint, CFARGS_NONE);
218
219 /* could be already set by power(4) */
220 if (!cold_hook)
221 cold_hook = lasi_cold_hook;
222 }
223
224 void
lasi_cold_hook(int on)225 lasi_cold_hook(int on)
226 {
227 struct lasi_softc *sc = device_private(lasi_cd.cd_devs[0]);
228
229 if (!sc)
230 return;
231
232 switch (on) {
233 case HPPA_COLD_COLD:
234 sc->sc_hw->lasi_power = LASI_BLINK;
235 break;
236 case HPPA_COLD_HOT:
237 sc->sc_hw->lasi_power = 0;
238 break;
239 case HPPA_COLD_OFF:
240 sc->sc_hw->lasi_power = LASI_OFF;
241 break;
242 }
243 }
244