imc.c revision 1.10 1 1.10 sekiya /* $NetBSD: imc.c,v 1.10 2003/12/14 07:21:51 sekiya Exp $ */
2 1.1 thorpej
3 1.1 thorpej /*
4 1.1 thorpej * Copyright (c) 2001 Rafal K. Boni
5 1.1 thorpej * All rights reserved.
6 1.4 simonb *
7 1.1 thorpej * Redistribution and use in source and binary forms, with or without
8 1.1 thorpej * modification, are permitted provided that the following conditions
9 1.1 thorpej * are met:
10 1.1 thorpej * 1. Redistributions of source code must retain the above copyright
11 1.1 thorpej * notice, this list of conditions and the following disclaimer.
12 1.1 thorpej * 2. Redistributions in binary form must reproduce the above copyright
13 1.1 thorpej * notice, this list of conditions and the following disclaimer in the
14 1.1 thorpej * documentation and/or other materials provided with the distribution.
15 1.1 thorpej * 3. The name of the author may not be used to endorse or promote products
16 1.1 thorpej * derived from this software without specific prior written permission.
17 1.4 simonb *
18 1.1 thorpej * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 1.1 thorpej * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 1.1 thorpej * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 1.1 thorpej * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 1.1 thorpej * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 1.1 thorpej * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 1.1 thorpej * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 1.1 thorpej * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 1.1 thorpej * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 1.1 thorpej * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 1.1 thorpej */
29 1.9 lukem
30 1.9 lukem #include <sys/cdefs.h>
31 1.10 sekiya __KERNEL_RCSID(0, "$NetBSD: imc.c,v 1.10 2003/12/14 07:21:51 sekiya Exp $");
32 1.1 thorpej
33 1.1 thorpej #include <sys/param.h>
34 1.1 thorpej #include <sys/device.h>
35 1.1 thorpej #include <sys/systm.h>
36 1.1 thorpej
37 1.1 thorpej #include <machine/cpu.h>
38 1.1 thorpej #include <machine/locore.h>
39 1.1 thorpej #include <machine/autoconf.h>
40 1.1 thorpej #include <machine/bus.h>
41 1.2 thorpej #include <machine/machtype.h>
42 1.1 thorpej
43 1.3 rafal #include <sgimips/dev/imcreg.h>
44 1.3 rafal
45 1.1 thorpej #include "locators.h"
46 1.1 thorpej
47 1.1 thorpej struct imc_softc {
48 1.1 thorpej struct device sc_dev;
49 1.1 thorpej
50 1.10 sekiya bus_space_tag_t iot;
51 1.10 sekiya bus_space_handle_t ioh;
52 1.10 sekiya
53 1.1 thorpej int eisa_present : 1;
54 1.1 thorpej };
55 1.1 thorpej
56 1.1 thorpej static int imc_match(struct device *, struct cfdata *, void *);
57 1.1 thorpej static void imc_attach(struct device *, struct device *, void *);
58 1.1 thorpej static int imc_print(void *, const char *);
59 1.10 sekiya void imc_bus_reset(void);
60 1.1 thorpej
61 1.6 thorpej CFATTACH_DECL(imc, sizeof(struct imc_softc),
62 1.7 thorpej imc_match, imc_attach, NULL, NULL);
63 1.1 thorpej
64 1.1 thorpej struct imc_attach_args {
65 1.1 thorpej const char* iaa_name;
66 1.1 thorpej
67 1.1 thorpej bus_space_tag_t iaa_st;
68 1.1 thorpej bus_space_handle_t iaa_sh;
69 1.1 thorpej
70 1.1 thorpej /* ? */
71 1.4 simonb long iaa_offset;
72 1.4 simonb int iaa_intr;
73 1.1 thorpej #if 0
74 1.4 simonb int iaa_stride;
75 1.1 thorpej #endif
76 1.1 thorpej };
77 1.1 thorpej
78 1.10 sekiya struct imc_softc isc;
79 1.10 sekiya
80 1.1 thorpej static int
81 1.1 thorpej imc_match(parent, match, aux)
82 1.1 thorpej struct device *parent;
83 1.1 thorpej struct cfdata *match;
84 1.1 thorpej void *aux;
85 1.1 thorpej {
86 1.1 thorpej
87 1.10 sekiya if ( (mach_type == MACH_SGI_IP22) || (mach_type == MACH_SGI_IP20) )
88 1.10 sekiya return (1);
89 1.2 thorpej
90 1.10 sekiya return (0);
91 1.1 thorpej }
92 1.1 thorpej
93 1.1 thorpej static void
94 1.1 thorpej imc_attach(parent, self, aux)
95 1.1 thorpej struct device *parent;
96 1.1 thorpej struct device *self;
97 1.1 thorpej void *aux;
98 1.1 thorpej {
99 1.1 thorpej u_int32_t reg;
100 1.1 thorpej struct imc_attach_args iaa;
101 1.10 sekiya struct mainbus_attach_args *ma = aux;
102 1.10 sekiya u_int32_t sysid;
103 1.10 sekiya
104 1.10 sekiya isc.iot = SGIMIPS_BUS_SPACE_HPC;
105 1.10 sekiya if (bus_space_map(isc.iot, ma->ma_addr, 0,
106 1.10 sekiya BUS_SPACE_MAP_LINEAR, &isc.ioh))
107 1.10 sekiya panic("imc_attach: could not allocate memory\n");
108 1.10 sekiya
109 1.10 sekiya sysid = bus_space_read_4(isc.iot, isc.ioh, IMC_SYSID);
110 1.1 thorpej
111 1.3 rafal /* EISA present bit is on even on Indys, so don't trust it! */
112 1.3 rafal if (mach_subtype == MACH_SGI_IP22_FULLHOUSE)
113 1.10 sekiya isc.eisa_present = (sysid & IMC_SYSID_HAVEISA);
114 1.4 simonb else
115 1.10 sekiya isc.eisa_present = 0;
116 1.1 thorpej
117 1.3 rafal printf("\nimc0: Revision %d", (sysid & IMC_SYSID_REVMASK));
118 1.1 thorpej
119 1.10 sekiya if (isc.eisa_present)
120 1.4 simonb printf(", EISA bus present");
121 1.1 thorpej
122 1.1 thorpej printf("\n");
123 1.1 thorpej
124 1.1 thorpej /* Clear CPU/GIO error status registers to clear any leftover bits. */
125 1.10 sekiya bus_space_write_4(isc.iot, isc.ioh, IMC_CPU_ERRSTAT, 0);
126 1.10 sekiya bus_space_write_4(isc.iot, isc.ioh, IMC_GIO_ERRSTAT, 0);
127 1.1 thorpej
128 1.4 simonb /*
129 1.3 rafal * Enable parity reporting on GIO/main memory transactions.
130 1.3 rafal * Disable parity checking on CPU bus transactions (as turning
131 1.3 rafal * it on seems to cause spurious bus errors), but enable parity
132 1.4 simonb * checking on CPU reads from main memory (note that this bit
133 1.3 rafal * has the opposite sense... Turning it on turns the checks off!).
134 1.3 rafal * Finally, turn on interrupt writes to the CPU from the MC.
135 1.1 thorpej */
136 1.10 sekiya reg = bus_space_read_4(isc.iot, isc.ioh, IMC_CPUCTRL0);
137 1.3 rafal reg &= ~IMC_CPUCTRL0_NCHKMEMPAR;
138 1.3 rafal reg |= (IMC_CPUCTRL0_GPR | IMC_CPUCTRL0_MPR | IMC_CPUCTRL0_INTENA);
139 1.10 sekiya bus_space_write_4(isc.iot, isc.ioh, IMC_CPUCTRL0, reg);
140 1.4 simonb
141 1.1 thorpej /* Setup the MC write buffer depth */
142 1.10 sekiya reg = bus_space_read_4(isc.iot, isc.ioh, IMC_CPUCTRL1);
143 1.3 rafal reg = (reg & ~IMC_CPUCTRL1_MCHWMSK) | 13;
144 1.10 sekiya if (mach_type == MACH_SGI_IP20)
145 1.10 sekiya reg = (reg & ~IMC_CPUCTRL1_HPCLITTLE) | IMC_CPUCTRL1_HPCFX;
146 1.10 sekiya bus_space_write_4(isc.iot, isc.ioh, IMC_CPUCTRL1, reg);
147 1.10 sekiya
148 1.1 thorpej
149 1.4 simonb /*
150 1.3 rafal * Set GIO64 arbitrator configuration register:
151 1.3 rafal *
152 1.3 rafal * Preserve PROM-set graphics-related bits, as they seem to depend
153 1.4 simonb * on the graphics variant present and I'm not sure how to figure
154 1.3 rafal * that out or 100% sure what the correct settings are for each.
155 1.3 rafal */
156 1.10 sekiya reg = bus_space_read_4(isc.iot, isc.ioh, IMC_GIO64ARB);
157 1.3 rafal reg &= (IMC_GIO64ARB_GRX64 | IMC_GIO64ARB_GRXRT | IMC_GIO64ARB_GRXMST);
158 1.1 thorpej
159 1.1 thorpej /* GIO64 invariant for all IP22 platforms: one GIO bus, HPC1 @ 64 */
160 1.3 rafal reg |= IMC_GIO64ARB_ONEGIO | IMC_GIO64ARB_HPC64;
161 1.1 thorpej
162 1.3 rafal /* Rest of settings are machine/board dependant */
163 1.10 sekiya if (mach_type == MACH_SGI_IP20)
164 1.10 sekiya {
165 1.10 sekiya reg |= (IMC_GIO64ARB_ONEGIO |
166 1.10 sekiya IMC_GIO64ARB_EXP1RT | IMC_GIO64ARB_EXP0RT);
167 1.10 sekiya reg &= ~(IMC_GIO64ARB_HPC64 |
168 1.10 sekiya IMC_GIO64ARB_HPCEXP64 | IMC_GIO64ARB_EISA64 |
169 1.10 sekiya IMC_GIO64ARB_EXP064 | IMC_GIO64ARB_EXP164 |
170 1.10 sekiya IMC_GIO64ARB_EXP0PIPE | IMC_GIO64ARB_EXP1PIPE |
171 1.10 sekiya IMC_GIO64ARB_EXP0MST | IMC_GIO64ARB_EXP1MST);
172 1.10 sekiya /* XXX second ethernet adapter */
173 1.10 sekiya reg |= IMC_GIO64ARB_EXP0MST;
174 1.10 sekiya }
175 1.10 sekiya else
176 1.10 sekiya {
177 1.10 sekiya switch (mach_subtype) {
178 1.10 sekiya case MACH_SGI_IP22_GUINESS:
179 1.10 sekiya /* EISA can bus-master, is 64-bit */
180 1.10 sekiya reg |= (IMC_GIO64ARB_EISAMST | IMC_GIO64ARB_EISA64);
181 1.10 sekiya break;
182 1.4 simonb
183 1.10 sekiya case MACH_SGI_IP22_FULLHOUSE:
184 1.4 simonb /*
185 1.4 simonb * All Fullhouse boards have a 64-bit HPC2 and pipelined
186 1.4 simonb * EXP0 slot.
187 1.4 simonb */
188 1.10 sekiya reg |= (IMC_GIO64ARB_HPCEXP64 | IMC_GIO64ARB_EXP0PIPE);
189 1.4 simonb
190 1.10 sekiya if (mach_boardrev < 2) {
191 1.4 simonb /* EXP0 realtime, EXP1 can master */
192 1.10 sekiya reg |= (IMC_GIO64ARB_EXP0RT | IMC_GIO64ARB_EXP1MST);
193 1.10 sekiya } else {
194 1.10 sekiya /* EXP1 pipelined as well, EISA masters */
195 1.10 sekiya reg |= (IMC_GIO64ARB_EXP1PIPE | IMC_GIO64ARB_EISAMST);
196 1.10 sekiya }
197 1.10 sekiya break;
198 1.4 simonb }
199 1.3 rafal }
200 1.4 simonb
201 1.10 sekiya bus_space_write_4(isc.iot, isc.ioh, IMC_GIO64ARB, reg);
202 1.1 thorpej
203 1.10 sekiya if (isc.eisa_present) {
204 1.1 thorpej #if notyet
205 1.4 simonb memset(&iaa, 0, sizeof(iaa));
206 1.3 rafal
207 1.4 simonb iaa.iaa_name = "eisa";
208 1.4 simonb (void)config_found(self, (void*)&iaa, imc_print);
209 1.1 thorpej #endif
210 1.1 thorpej }
211 1.1 thorpej
212 1.1 thorpej memset(&iaa, 0, sizeof(iaa));
213 1.1 thorpej
214 1.1 thorpej iaa.iaa_name = "gio";
215 1.1 thorpej (void)config_found(self, (void*)&iaa, imc_print);
216 1.1 thorpej }
217 1.1 thorpej
218 1.1 thorpej
219 1.1 thorpej static int
220 1.1 thorpej imc_print(aux, name)
221 1.1 thorpej void *aux;
222 1.1 thorpej const char *name;
223 1.1 thorpej {
224 1.1 thorpej struct imc_attach_args* iaa = aux;
225 1.1 thorpej
226 1.1 thorpej if (name)
227 1.8 thorpej aprint_normal("%s at %s", iaa->iaa_name, name);
228 1.1 thorpej
229 1.1 thorpej return UNCONF;
230 1.1 thorpej }
231 1.1 thorpej
232 1.10 sekiya void
233 1.10 sekiya imc_bus_reset(void)
234 1.10 sekiya {
235 1.10 sekiya bus_space_write_4(isc.iot, isc.ioh, IMC_CPU_ERRSTAT, 0);
236 1.10 sekiya bus_space_write_4(isc.iot, isc.ioh, IMC_GIO_ERRSTAT, 0);
237 1.10 sekiya }
238