Expand PMF_FN_* macros.
[netbsd-mini2440.git] / sys / arch / vax / vsa / vsbus.c
blobea12e8defabb45fff352f2acf60220b1066a857f
1 /* $NetBSD: vsbus.c,v 1.57 2009/10/26 19:16:58 cegger Exp $ */
2 /*
3 * Copyright (c) 1996, 1999 Ludd, University of Lule}, Sweden.
4 * All rights reserved.
6 * This code is derived from software contributed to Ludd by Bertram Barth.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed at Ludd, University of
19 * Lule}, Sweden and its contributors.
20 * 4. The name of the author may not be used to endorse or promote products
21 * derived from this software without specific prior written permission
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 #include <sys/cdefs.h>
36 __KERNEL_RCSID(0, "$NetBSD: vsbus.c,v 1.57 2009/10/26 19:16:58 cegger Exp $");
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/buf.h>
41 #include <sys/conf.h>
42 #include <sys/file.h>
43 #include <sys/ioctl.h>
44 #include <sys/proc.h>
45 #include <sys/device.h>
46 #include <sys/disklabel.h>
47 #include <sys/syslog.h>
48 #include <sys/stat.h>
50 #include <uvm/uvm_extern.h>
52 #define _VAX_BUS_DMA_PRIVATE
53 #include <machine/bus.h>
54 #include <machine/pte.h>
55 #include <machine/sid.h>
56 #include <machine/scb.h>
57 #include <machine/cpu.h>
58 #include <machine/trap.h>
59 #include <machine/nexus.h>
61 #include <machine/uvax.h>
62 #include <machine/ka410.h>
63 #include <machine/ka420.h>
64 #include <machine/ka43.h>
66 #include <machine/mainbus.h>
67 #include <machine/vsbus.h>
69 #include "ioconf.h"
70 #include "locators.h"
71 #include "opt_cputype.h"
73 static int vsbus_match(device_t, cfdata_t, void *);
74 static void vsbus_attach(device_t, device_t, void *);
75 static int vsbus_print(void *, const char *);
76 static int vsbus_search(device_t, cfdata_t, const int *, void *);
78 static SIMPLEQ_HEAD(, vsbus_dma) vsbus_dma;
80 CFATTACH_DECL_NEW(vsbus, sizeof(struct vsbus_softc),
81 vsbus_match, vsbus_attach, NULL, NULL);
83 static struct vax_bus_dma_tag vsbus_bus_dma_tag = {
84 ._dmamap_create = _bus_dmamap_create,
85 ._dmamap_destroy = _bus_dmamap_destroy,
86 ._dmamap_load = _bus_dmamap_load,
87 ._dmamap_load_mbuf = _bus_dmamap_load_mbuf,
88 ._dmamap_load_uio = _bus_dmamap_load_uio,
89 ._dmamap_load_raw = _bus_dmamap_load_raw,
90 ._dmamap_unload = _bus_dmamap_unload,
91 ._dmamap_sync = _bus_dmamap_sync,
92 ._dmamem_alloc = _bus_dmamem_alloc,
93 ._dmamem_free = _bus_dmamem_free,
94 ._dmamem_map = _bus_dmamem_map,
95 ._dmamem_unmap = _bus_dmamem_unmap,
96 ._dmamem_mmap = _bus_dmamem_mmap,
99 int
100 vsbus_print(void *aux, const char *name)
102 struct vsbus_attach_args * const va = aux;
104 aprint_normal(" csr 0x%lx vec %o ipl %x maskbit %d", va->va_paddr,
105 va->va_cvec & 511, va->va_br, va->va_maskno - 1);
106 return UNCONF;
110 vsbus_match(device_t parent, cfdata_t cf, void *aux)
112 struct mainbus_attach_args * const ma = aux;
114 return !strcmp("vsbus", ma->ma_type);
117 void
118 vsbus_attach(device_t parent, device_t self, void *aux)
120 struct mainbus_attach_args * const ma = aux;
121 struct vsbus_softc *sc = device_private(self);
122 int dbase, dsize;
124 aprint_normal("\n");
126 sc->sc_dev = self;
127 sc->sc_iot = ma->ma_iot;
128 sc->sc_dmatag = vsbus_bus_dma_tag;
130 switch (vax_boardtype) {
131 #if VAX49 || VAX53
132 case VAX_BTYP_53:
133 case VAX_BTYP_49:
134 sc->sc_vsregs = vax_map_physmem(0x25c00000, 1);
135 sc->sc_intreq = (char *)sc->sc_vsregs + 12;
136 sc->sc_intclr = (char *)sc->sc_vsregs + 12;
137 sc->sc_intmsk = (char *)sc->sc_vsregs + 8;
138 vsbus_dma_init(sc, 8192);
139 break;
140 #endif
142 #if VAX46 || VAX48
143 case VAX_BTYP_48:
144 case VAX_BTYP_46:
145 sc->sc_vsregs = vax_map_physmem(VS_REGS, 1);
146 sc->sc_intreq = (char *)sc->sc_vsregs + 15;
147 sc->sc_intclr = (char *)sc->sc_vsregs + 15;
148 sc->sc_intmsk = (char *)sc->sc_vsregs + 12;
149 vsbus_dma_init(sc, 32768);
150 #endif
152 default:
153 sc->sc_vsregs = vax_map_physmem(VS_REGS, 1);
154 sc->sc_intreq = (char *)sc->sc_vsregs + 15;
155 sc->sc_intclr = (char *)sc->sc_vsregs + 15;
156 sc->sc_intmsk = (char *)sc->sc_vsregs + 12;
157 if (vax_boardtype == VAX_BTYP_410) {
158 dbase = KA410_DMA_BASE;
159 dsize = KA410_DMA_SIZE;
160 } else {
161 dbase = KA420_DMA_BASE;
162 dsize = KA420_DMA_SIZE;
163 *(char *)(sc->sc_vsregs + 0xe0) = 1; /* Big DMA */
165 sc->sc_dmasize = dsize;
166 sc->sc_dmaaddr = uvm_km_alloc(kernel_map, dsize, 0,
167 UVM_KMF_VAONLY);
168 ioaccess(sc->sc_dmaaddr, dbase, dsize/VAX_NBPG);
169 break;
172 SIMPLEQ_INIT(&vsbus_dma);
174 * First: find which interrupts we won't care about.
175 * There are interrupts that interrupt on a periodic basic
176 * that we don't want to interfere with the rest of the
177 * interrupt probing.
179 *sc->sc_intmsk = 0;
180 *sc->sc_intclr = 0xff;
181 DELAY(1000000); /* Wait a second */
182 sc->sc_mask = *sc->sc_intreq;
183 aprint_normal_dev(self, "interrupt mask %x\n", sc->sc_mask);
185 * now check for all possible devices on this "bus"
187 config_search_ia(vsbus_search, self, "vsbus", NULL);
189 /* Autoconfig finished, enable interrupts */
190 *sc->sc_intmsk = ~sc->sc_mask;
194 vsbus_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
196 struct vsbus_softc *sc = device_private(parent);
197 struct vsbus_attach_args va;
198 int i, vec, br;
199 u_char c;
201 va.va_paddr = cf->cf_loc[VSBUSCF_CSR];
202 va.va_addr = vax_map_physmem(va.va_paddr, 1);
203 va.va_dmat = &sc->sc_dmatag;
204 va.va_memt = sc->sc_iot;
206 *sc->sc_intmsk = 0;
207 *sc->sc_intclr = 0xff;
208 scb_vecref(0, 0); /* Clear vector ref */
210 i = config_match(parent, cf, &va);
211 vax_unmap_physmem(va.va_addr, 1);
212 c = *sc->sc_intreq & ~sc->sc_mask;
213 if (i == 0)
214 goto forgetit;
215 if (i > 10)
216 c = sc->sc_mask; /* Fooling interrupt */
217 else if (c == 0)
218 goto forgetit;
220 *sc->sc_intmsk = c;
221 DELAY(100);
222 *sc->sc_intmsk = 0;
223 va.va_maskno = ffs((u_int)c);
224 i = scb_vecref(&vec, &br);
225 if (i == 0)
226 goto fail;
227 if (vec == 0)
228 goto fail;
230 va.va_br = br;
231 va.va_cvec = vec;
232 va.va_dmaaddr = sc->sc_dmaaddr;
233 va.va_dmasize = sc->sc_dmasize;
234 *sc->sc_intmsk = c; /* Allow interrupts during attach */
235 config_attach(parent, cf, &va, vsbus_print);
236 *sc->sc_intmsk = 0;
237 return 0;
239 fail:
240 printf("%s%d at %s csr 0x%x %s\n",
241 cf->cf_name, cf->cf_unit, device_xname(parent),
242 cf->cf_loc[VSBUSCF_CSR], (i ? "zero vector" : "didn't interrupt"));
243 forgetit:
244 return 0;
248 * Sets a new interrupt mask. Returns the old one.
249 * Works like spl functions.
251 unsigned char
252 vsbus_setmask(int mask)
254 struct vsbus_softc * const sc = device_lookup_private(&vsbus_cd, 0);
255 unsigned char ch;
257 if (sc == NULL)
258 return 0;
260 ch = *sc->sc_intmsk;
261 *sc->sc_intmsk = mask;
262 return ch;
266 * Clears the interrupts in mask.
268 void
269 vsbus_clrintr(int mask)
271 struct vsbus_softc * const sc = device_lookup_private(&vsbus_cd, 0);
272 if (sc == NULL)
273 return;
275 *sc->sc_intclr = mask;
279 * Copy data from/to a user process' space from the DMA area.
280 * Use the physical memory directly.
282 void
283 vsbus_copytoproc(struct proc *p, void *fromv, void *tov, int len)
285 char *from = fromv, *to = tov;
286 struct pte *pte;
287 paddr_t pa;
289 if ((vaddr_t)to & KERNBASE) { /* In kernel space */
290 memcpy(to, from, len);
291 return;
294 #ifdef DIAGNOSTIC
295 if (p == NULL)
296 panic("vsbus_copytoproc: no proc");
297 #endif
299 if ((vaddr_t)to & 0x40000000)
300 pte = &p->p_vmspace->vm_map.pmap->pm_p1br[vax_btop((vaddr_t)to & ~0x40000000)];
301 else
302 pte = &p->p_vmspace->vm_map.pmap->pm_p0br[vax_btop((vaddr_t)to)];
303 if ((vaddr_t)to & PGOFSET) {
304 int cz = round_page((vaddr_t)to) - (vaddr_t)to;
306 pa = (pte->pg_pfn << VAX_PGSHIFT) | (PAGE_SIZE - cz) | KERNBASE;
307 memcpy((void *)pa, from, min(cz, len));
308 from += cz;
309 to += cz;
310 len -= cz;
311 pte += 8; /* XXX */
313 while (len > 0) {
314 pa = (pte->pg_pfn << VAX_PGSHIFT) | KERNBASE;
315 memcpy((void *)pa, from, min(PAGE_SIZE, len));
316 from += PAGE_SIZE;
317 to += PAGE_SIZE;
318 len -= PAGE_SIZE;
319 pte += 8; /* XXX */
323 void
324 vsbus_copyfromproc(struct proc *p, void *fromv, void *tov, int len)
326 char *from = fromv, *to = tov;
327 struct pte *pte;
328 paddr_t pa;
330 if ((vaddr_t)from & KERNBASE) { /* In kernel space */
331 memcpy(to, from, len);
332 return;
335 #ifdef DIAGNOSTIC
336 if (p == NULL)
337 panic("vsbus_copyfromproc: no proc");
338 #endif
340 if ((vaddr_t)from & 0x40000000)
341 pte = &p->p_vmspace->vm_map.pmap->pm_p1br[vax_btop((vaddr_t)from & ~0x40000000)];
342 else
343 pte = &p->p_vmspace->vm_map.pmap->pm_p0br[vax_btop((vaddr_t)from)];
344 if ((vaddr_t)from & PGOFSET) {
345 int cz = round_page((vaddr_t)from) - (vaddr_t)from;
347 pa = (pte->pg_pfn << VAX_PGSHIFT) | (PAGE_SIZE - cz) | KERNBASE;
348 memcpy(to, (void *)pa, min(cz, len));
349 from += cz;
350 to += cz;
351 len -= cz;
352 pte += 8; /* XXX */
354 while (len > 0) {
355 pa = (pte->pg_pfn << VAX_PGSHIFT) | KERNBASE;
356 memcpy(to, (void *)pa, min(PAGE_SIZE, len));
357 from += PAGE_SIZE;
358 to += PAGE_SIZE;
359 len -= PAGE_SIZE;
360 pte += 8; /* XXX */
365 * There can only be one user of the DMA area on VS2k/VS3100 at one
366 * time, so keep track of it here.
368 static int vsbus_active = 0;
370 void
371 vsbus_dma_start(struct vsbus_dma *vd)
374 SIMPLEQ_INSERT_TAIL(&vsbus_dma, vd, vd_q);
376 if (vsbus_active == 0)
377 vsbus_dma_intr();
380 void
381 vsbus_dma_intr(void)
383 struct vsbus_dma *vd;
385 vd = SIMPLEQ_FIRST(&vsbus_dma);
386 if (vd == NULL) {
387 vsbus_active = 0;
388 return;
390 vsbus_active = 1;
391 SIMPLEQ_REMOVE_HEAD(&vsbus_dma, vd_q);
392 (*vd->vd_go)(vd->vd_arg);