28 */
29
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <sys/module.h>
33#include <sys/bus.h>
34#include <sys/conf.h>
35#include <sys/kernel.h>
36
37#include <dev/ofw/openfirm.h>
38#include <dev/ofw/ofw_pci.h>
39#include <dev/ofw/ofw_bus.h>
40#include <dev/ofw/ofw_bus_subr.h>
41
42#include <dev/pci/pcivar.h>
43#include <dev/pci/pcireg.h>
44
45#include <machine/bus.h>
46#include <machine/intr_machdep.h>
47#include <machine/md_var.h>
48#include <machine/pio.h>
49#include <machine/resource.h>
50
51#include <sys/rman.h>
52
53#include <powerpc/powermac/gracklevar.h>
54
55#include <vm/vm.h>
56#include <vm/pmap.h>
57
58#include "pcib_if.h"
59
60int badaddr(void *, size_t); /* XXX */
61
62/*
63 * Device interface.
64 */
65static int grackle_probe(device_t);
66static int grackle_attach(device_t);
67
68/*
69 * Bus interface.
70 */
71static int grackle_read_ivar(device_t, device_t, int,
72 uintptr_t *);
73static struct resource * grackle_alloc_resource(device_t bus,
74 device_t child, int type, int *rid, u_long start,
75 u_long end, u_long count, u_int flags);
76static int grackle_release_resource(device_t bus, device_t child,
77 int type, int rid, struct resource *res);
78static int grackle_activate_resource(device_t bus, device_t child,
79 int type, int rid, struct resource *res);
80static int grackle_deactivate_resource(device_t bus,
81 device_t child, int type, int rid,
82 struct resource *res);
83
84
85/*
86 * pcib interface.
87 */
88static int grackle_maxslots(device_t);
89static u_int32_t grackle_read_config(device_t, u_int, u_int, u_int,
90 u_int, int);
91static void grackle_write_config(device_t, u_int, u_int, u_int,
92 u_int, u_int32_t, int);
93static int grackle_route_interrupt(device_t, device_t, int);
94
95/*
96 * ofw_bus interface
97 */
98static phandle_t grackle_get_node(device_t bus, device_t dev);
99
100/*
101 * Local routines.
102 */
103static int grackle_enable_config(struct grackle_softc *, u_int,
104 u_int, u_int, u_int);
105static void grackle_disable_config(struct grackle_softc *);
106
107/*
108 * Driver methods.
109 */
110static device_method_t grackle_methods[] = {
111 /* Device interface */
112 DEVMETHOD(device_probe, grackle_probe),
113 DEVMETHOD(device_attach, grackle_attach),
114
115 /* Bus interface */
116 DEVMETHOD(bus_print_child, bus_generic_print_child),
117 DEVMETHOD(bus_read_ivar, grackle_read_ivar),
118 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
119 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
120 DEVMETHOD(bus_alloc_resource, grackle_alloc_resource),
121 DEVMETHOD(bus_release_resource, grackle_release_resource),
122 DEVMETHOD(bus_activate_resource, grackle_activate_resource),
123 DEVMETHOD(bus_deactivate_resource, grackle_deactivate_resource),
124
125 /* pcib interface */
126 DEVMETHOD(pcib_maxslots, grackle_maxslots),
127 DEVMETHOD(pcib_read_config, grackle_read_config),
128 DEVMETHOD(pcib_write_config, grackle_write_config),
129 DEVMETHOD(pcib_route_interrupt, grackle_route_interrupt),
130
131 /* ofw_bus interface */
132 DEVMETHOD(ofw_bus_get_node, grackle_get_node),
133
134 { 0, 0 }
135};
136
137static driver_t grackle_driver = {
138 "pcib",
139 grackle_methods,
140 sizeof(struct grackle_softc)
141};
142
143static devclass_t grackle_devclass;
144
145DRIVER_MODULE(grackle, nexus, grackle_driver, grackle_devclass, 0, 0);
146
147static int
148grackle_probe(device_t dev)
149{
150 const char *type, *compatible;
151
152 type = ofw_bus_get_type(dev);
153 compatible = ofw_bus_get_compat(dev);
154
155 if (type == NULL || compatible == NULL)
156 return (ENXIO);
157
158 if (strcmp(type, "pci") != 0 || strcmp(compatible, "grackle") != 0)
159 return (ENXIO);
160
161 device_set_desc(dev, "MPC106 (Grackle) Host-PCI bridge");
162 return (0);
163}
164
165static int
166grackle_attach(device_t dev)
167{
168 struct grackle_softc *sc;
169 phandle_t node;
170 u_int32_t busrange[2];
171 struct grackle_range *rp, *io, *mem[2];
172 int nmem, i, error;
173
174 node = ofw_bus_get_node(dev);
175 sc = device_get_softc(dev);
176
177 if (OF_getprop(node, "bus-range", busrange, sizeof(busrange)) != 8)
178 return (ENXIO);
179
180 sc->sc_dev = dev;
181 sc->sc_node = node;
182 sc->sc_bus = busrange[0];
183
184 /*
185 * The Grackle PCI config addr/data registers are actually in
186 * PCI space, but since they are needed to actually probe the
187 * PCI bus, use the fact that they are also available directly
188 * on the processor bus and map them
189 */
190 sc->sc_addr = (vm_offset_t)pmap_mapdev(GRACKLE_ADDR, PAGE_SIZE);
191 sc->sc_data = (vm_offset_t)pmap_mapdev(GRACKLE_DATA, PAGE_SIZE);
192
193 bzero(sc->sc_range, sizeof(sc->sc_range));
194 sc->sc_nrange = OF_getprop(node, "ranges", sc->sc_range,
195 sizeof(sc->sc_range));
196
197 if (sc->sc_nrange == -1) {
198 device_printf(dev, "could not get ranges\n");
199 return (ENXIO);
200 }
201
202 sc->sc_nrange /= sizeof(sc->sc_range[0]);
203
204 sc->sc_range[6].pci_hi = 0;
205 io = NULL;
206 nmem = 0;
207
208 for (rp = sc->sc_range; rp < sc->sc_range + sc->sc_nrange &&
209 rp->pci_hi != 0; rp++) {
210 switch (rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) {
211 case OFW_PCI_PHYS_HI_SPACE_CONFIG:
212 break;
213 case OFW_PCI_PHYS_HI_SPACE_IO:
214 io = rp;
215 break;
216 case OFW_PCI_PHYS_HI_SPACE_MEM32:
217 mem[nmem] = rp;
218 nmem++;
219 break;
220 case OFW_PCI_PHYS_HI_SPACE_MEM64:
221 break;
222 }
223 }
224
225 if (io == NULL) {
226 device_printf(dev, "can't find io range\n");
227 return (ENXIO);
228 }
229 sc->sc_io_rman.rm_type = RMAN_ARRAY;
230 sc->sc_io_rman.rm_descr = "Grackle PCI I/O Ports";
231 sc->sc_iostart = io->pci_iospace;
232 if (rman_init(&sc->sc_io_rman) != 0 ||
233 rman_manage_region(&sc->sc_io_rman, io->pci_lo,
234 io->pci_lo + io->size_lo) != 0) {
235 panic("grackle_attach: failed to set up I/O rman");
236 }
237
238 if (nmem == 0) {
239 device_printf(dev, "can't find mem ranges\n");
240 return (ENXIO);
241 }
242 sc->sc_mem_rman.rm_type = RMAN_ARRAY;
243 sc->sc_mem_rman.rm_descr = "Grackle PCI Memory";
244 error = rman_init(&sc->sc_mem_rman);
245 if (error) {
246 device_printf(dev, "rman_init() failed. error = %d\n", error);
247 return (error);
248 }
249 for (i = 0; i < nmem; i++) {
250 error = rman_manage_region(&sc->sc_mem_rman, mem[i]->pci_lo,
251 mem[i]->pci_lo + mem[i]->size_lo);
252 if (error) {
253 device_printf(dev,
254 "rman_manage_region() failed. error = %d\n", error);
255 return (error);
256 }
257 }
258
259 ofw_bus_setup_iinfo(node, &sc->sc_pci_iinfo, sizeof(cell_t));
260
261 device_add_child(dev, "pci", device_get_unit(dev));
262 return (bus_generic_attach(dev));
263}
264
265static int
266grackle_maxslots(device_t dev)
267{
268
269 return (PCI_SLOTMAX);
270}
271
272static u_int32_t
273grackle_read_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg,
274 int width)
275{
276 struct grackle_softc *sc;
277 vm_offset_t caoff;
278 u_int32_t retval = 0xffffffff;
279
280 sc = device_get_softc(dev);
281 caoff = sc->sc_data + (reg & 0x03);
282
283 if (grackle_enable_config(sc, bus, slot, func, reg) != 0) {
284
285 /*
286 * Config probes to non-existent devices on the
287 * secondary bus generates machine checks. Be sure
288 * to catch these.
289 */
290 if (bus > 0) {
291 if (badaddr((void *)sc->sc_data, 4)) {
292 return (retval);
293 }
294 }
295
296 switch (width) {
297 case 1:
298 retval = (in8rb(caoff));
299 break;
300 case 2:
301 retval = (in16rb(caoff));
302 break;
303 case 4:
304 retval = (in32rb(caoff));
305 break;
306 }
307 }
308 grackle_disable_config(sc);
309
310 return (retval);
311}
312
313static void
314grackle_write_config(device_t dev, u_int bus, u_int slot, u_int func,
315 u_int reg, u_int32_t val, int width)
316{
317 struct grackle_softc *sc;
318 vm_offset_t caoff;
319
320 sc = device_get_softc(dev);
321 caoff = sc->sc_data + (reg & 0x03);
322
323 if (grackle_enable_config(sc, bus, slot, func, reg)) {
324 switch (width) {
325 case 1:
326 out8rb(caoff, val);
327 (void)in8rb(caoff);
328 break;
329 case 2:
330 out16rb(caoff, val);
331 (void)in16rb(caoff);
332 break;
333 case 4:
334 out32rb(caoff, val);
335 (void)in32rb(caoff);
336 break;
337 }
338 }
339 grackle_disable_config(sc);
340}
341
342static int
343grackle_route_interrupt(device_t bus, device_t dev, int pin)
344{
345 struct grackle_softc *sc;
346 struct ofw_pci_register reg;
347 uint32_t pintr, mintr;
348 phandle_t iparent;
349 uint8_t maskbuf[sizeof(reg) + sizeof(pintr)];
350
351 sc = device_get_softc(bus);
352 pintr = pin;
353 if (ofw_bus_lookup_imap(ofw_bus_get_node(dev), &sc->sc_pci_iinfo, ®,
354 sizeof(reg), &pintr, sizeof(pintr), &mintr, sizeof(mintr),
355 &iparent, maskbuf))
| 28 */
29
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <sys/module.h>
33#include <sys/bus.h>
34#include <sys/conf.h>
35#include <sys/kernel.h>
36
37#include <dev/ofw/openfirm.h>
38#include <dev/ofw/ofw_pci.h>
39#include <dev/ofw/ofw_bus.h>
40#include <dev/ofw/ofw_bus_subr.h>
41
42#include <dev/pci/pcivar.h>
43#include <dev/pci/pcireg.h>
44
45#include <machine/bus.h>
46#include <machine/intr_machdep.h>
47#include <machine/md_var.h>
48#include <machine/pio.h>
49#include <machine/resource.h>
50
51#include <sys/rman.h>
52
53#include <powerpc/powermac/gracklevar.h>
54
55#include <vm/vm.h>
56#include <vm/pmap.h>
57
58#include "pcib_if.h"
59
60int badaddr(void *, size_t); /* XXX */
61
62/*
63 * Device interface.
64 */
65static int grackle_probe(device_t);
66static int grackle_attach(device_t);
67
68/*
69 * Bus interface.
70 */
71static int grackle_read_ivar(device_t, device_t, int,
72 uintptr_t *);
73static struct resource * grackle_alloc_resource(device_t bus,
74 device_t child, int type, int *rid, u_long start,
75 u_long end, u_long count, u_int flags);
76static int grackle_release_resource(device_t bus, device_t child,
77 int type, int rid, struct resource *res);
78static int grackle_activate_resource(device_t bus, device_t child,
79 int type, int rid, struct resource *res);
80static int grackle_deactivate_resource(device_t bus,
81 device_t child, int type, int rid,
82 struct resource *res);
83
84
85/*
86 * pcib interface.
87 */
88static int grackle_maxslots(device_t);
89static u_int32_t grackle_read_config(device_t, u_int, u_int, u_int,
90 u_int, int);
91static void grackle_write_config(device_t, u_int, u_int, u_int,
92 u_int, u_int32_t, int);
93static int grackle_route_interrupt(device_t, device_t, int);
94
95/*
96 * ofw_bus interface
97 */
98static phandle_t grackle_get_node(device_t bus, device_t dev);
99
100/*
101 * Local routines.
102 */
103static int grackle_enable_config(struct grackle_softc *, u_int,
104 u_int, u_int, u_int);
105static void grackle_disable_config(struct grackle_softc *);
106
107/*
108 * Driver methods.
109 */
110static device_method_t grackle_methods[] = {
111 /* Device interface */
112 DEVMETHOD(device_probe, grackle_probe),
113 DEVMETHOD(device_attach, grackle_attach),
114
115 /* Bus interface */
116 DEVMETHOD(bus_print_child, bus_generic_print_child),
117 DEVMETHOD(bus_read_ivar, grackle_read_ivar),
118 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
119 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
120 DEVMETHOD(bus_alloc_resource, grackle_alloc_resource),
121 DEVMETHOD(bus_release_resource, grackle_release_resource),
122 DEVMETHOD(bus_activate_resource, grackle_activate_resource),
123 DEVMETHOD(bus_deactivate_resource, grackle_deactivate_resource),
124
125 /* pcib interface */
126 DEVMETHOD(pcib_maxslots, grackle_maxslots),
127 DEVMETHOD(pcib_read_config, grackle_read_config),
128 DEVMETHOD(pcib_write_config, grackle_write_config),
129 DEVMETHOD(pcib_route_interrupt, grackle_route_interrupt),
130
131 /* ofw_bus interface */
132 DEVMETHOD(ofw_bus_get_node, grackle_get_node),
133
134 { 0, 0 }
135};
136
137static driver_t grackle_driver = {
138 "pcib",
139 grackle_methods,
140 sizeof(struct grackle_softc)
141};
142
143static devclass_t grackle_devclass;
144
145DRIVER_MODULE(grackle, nexus, grackle_driver, grackle_devclass, 0, 0);
146
147static int
148grackle_probe(device_t dev)
149{
150 const char *type, *compatible;
151
152 type = ofw_bus_get_type(dev);
153 compatible = ofw_bus_get_compat(dev);
154
155 if (type == NULL || compatible == NULL)
156 return (ENXIO);
157
158 if (strcmp(type, "pci") != 0 || strcmp(compatible, "grackle") != 0)
159 return (ENXIO);
160
161 device_set_desc(dev, "MPC106 (Grackle) Host-PCI bridge");
162 return (0);
163}
164
165static int
166grackle_attach(device_t dev)
167{
168 struct grackle_softc *sc;
169 phandle_t node;
170 u_int32_t busrange[2];
171 struct grackle_range *rp, *io, *mem[2];
172 int nmem, i, error;
173
174 node = ofw_bus_get_node(dev);
175 sc = device_get_softc(dev);
176
177 if (OF_getprop(node, "bus-range", busrange, sizeof(busrange)) != 8)
178 return (ENXIO);
179
180 sc->sc_dev = dev;
181 sc->sc_node = node;
182 sc->sc_bus = busrange[0];
183
184 /*
185 * The Grackle PCI config addr/data registers are actually in
186 * PCI space, but since they are needed to actually probe the
187 * PCI bus, use the fact that they are also available directly
188 * on the processor bus and map them
189 */
190 sc->sc_addr = (vm_offset_t)pmap_mapdev(GRACKLE_ADDR, PAGE_SIZE);
191 sc->sc_data = (vm_offset_t)pmap_mapdev(GRACKLE_DATA, PAGE_SIZE);
192
193 bzero(sc->sc_range, sizeof(sc->sc_range));
194 sc->sc_nrange = OF_getprop(node, "ranges", sc->sc_range,
195 sizeof(sc->sc_range));
196
197 if (sc->sc_nrange == -1) {
198 device_printf(dev, "could not get ranges\n");
199 return (ENXIO);
200 }
201
202 sc->sc_nrange /= sizeof(sc->sc_range[0]);
203
204 sc->sc_range[6].pci_hi = 0;
205 io = NULL;
206 nmem = 0;
207
208 for (rp = sc->sc_range; rp < sc->sc_range + sc->sc_nrange &&
209 rp->pci_hi != 0; rp++) {
210 switch (rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) {
211 case OFW_PCI_PHYS_HI_SPACE_CONFIG:
212 break;
213 case OFW_PCI_PHYS_HI_SPACE_IO:
214 io = rp;
215 break;
216 case OFW_PCI_PHYS_HI_SPACE_MEM32:
217 mem[nmem] = rp;
218 nmem++;
219 break;
220 case OFW_PCI_PHYS_HI_SPACE_MEM64:
221 break;
222 }
223 }
224
225 if (io == NULL) {
226 device_printf(dev, "can't find io range\n");
227 return (ENXIO);
228 }
229 sc->sc_io_rman.rm_type = RMAN_ARRAY;
230 sc->sc_io_rman.rm_descr = "Grackle PCI I/O Ports";
231 sc->sc_iostart = io->pci_iospace;
232 if (rman_init(&sc->sc_io_rman) != 0 ||
233 rman_manage_region(&sc->sc_io_rman, io->pci_lo,
234 io->pci_lo + io->size_lo) != 0) {
235 panic("grackle_attach: failed to set up I/O rman");
236 }
237
238 if (nmem == 0) {
239 device_printf(dev, "can't find mem ranges\n");
240 return (ENXIO);
241 }
242 sc->sc_mem_rman.rm_type = RMAN_ARRAY;
243 sc->sc_mem_rman.rm_descr = "Grackle PCI Memory";
244 error = rman_init(&sc->sc_mem_rman);
245 if (error) {
246 device_printf(dev, "rman_init() failed. error = %d\n", error);
247 return (error);
248 }
249 for (i = 0; i < nmem; i++) {
250 error = rman_manage_region(&sc->sc_mem_rman, mem[i]->pci_lo,
251 mem[i]->pci_lo + mem[i]->size_lo);
252 if (error) {
253 device_printf(dev,
254 "rman_manage_region() failed. error = %d\n", error);
255 return (error);
256 }
257 }
258
259 ofw_bus_setup_iinfo(node, &sc->sc_pci_iinfo, sizeof(cell_t));
260
261 device_add_child(dev, "pci", device_get_unit(dev));
262 return (bus_generic_attach(dev));
263}
264
265static int
266grackle_maxslots(device_t dev)
267{
268
269 return (PCI_SLOTMAX);
270}
271
272static u_int32_t
273grackle_read_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg,
274 int width)
275{
276 struct grackle_softc *sc;
277 vm_offset_t caoff;
278 u_int32_t retval = 0xffffffff;
279
280 sc = device_get_softc(dev);
281 caoff = sc->sc_data + (reg & 0x03);
282
283 if (grackle_enable_config(sc, bus, slot, func, reg) != 0) {
284
285 /*
286 * Config probes to non-existent devices on the
287 * secondary bus generates machine checks. Be sure
288 * to catch these.
289 */
290 if (bus > 0) {
291 if (badaddr((void *)sc->sc_data, 4)) {
292 return (retval);
293 }
294 }
295
296 switch (width) {
297 case 1:
298 retval = (in8rb(caoff));
299 break;
300 case 2:
301 retval = (in16rb(caoff));
302 break;
303 case 4:
304 retval = (in32rb(caoff));
305 break;
306 }
307 }
308 grackle_disable_config(sc);
309
310 return (retval);
311}
312
313static void
314grackle_write_config(device_t dev, u_int bus, u_int slot, u_int func,
315 u_int reg, u_int32_t val, int width)
316{
317 struct grackle_softc *sc;
318 vm_offset_t caoff;
319
320 sc = device_get_softc(dev);
321 caoff = sc->sc_data + (reg & 0x03);
322
323 if (grackle_enable_config(sc, bus, slot, func, reg)) {
324 switch (width) {
325 case 1:
326 out8rb(caoff, val);
327 (void)in8rb(caoff);
328 break;
329 case 2:
330 out16rb(caoff, val);
331 (void)in16rb(caoff);
332 break;
333 case 4:
334 out32rb(caoff, val);
335 (void)in32rb(caoff);
336 break;
337 }
338 }
339 grackle_disable_config(sc);
340}
341
342static int
343grackle_route_interrupt(device_t bus, device_t dev, int pin)
344{
345 struct grackle_softc *sc;
346 struct ofw_pci_register reg;
347 uint32_t pintr, mintr;
348 phandle_t iparent;
349 uint8_t maskbuf[sizeof(reg) + sizeof(pintr)];
350
351 sc = device_get_softc(bus);
352 pintr = pin;
353 if (ofw_bus_lookup_imap(ofw_bus_get_node(dev), &sc->sc_pci_iinfo, ®,
354 sizeof(reg), &pintr, sizeof(pintr), &mintr, sizeof(mintr),
355 &iparent, maskbuf))
|
357
358 /* Maybe it's a real interrupt, not an intpin */
359 if (pin > 4)
360 return (pin);
361
362 device_printf(bus, "could not route pin %d for device %d.%d\n",
363 pin, pci_get_slot(dev), pci_get_function(dev));
364 return (PCI_INVALID_IRQ);
365}
366
367static int
368grackle_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
369{
370 struct grackle_softc *sc;
371
372 sc = device_get_softc(dev);
373
374 switch (which) {
375 case PCIB_IVAR_DOMAIN:
376 *result = 0;
377 return (0);
378 case PCIB_IVAR_BUS:
379 *result = sc->sc_bus;
380 return (0);
381 }
382
383 return (ENOENT);
384}
385
386static struct resource *
387grackle_alloc_resource(device_t bus, device_t child, int type, int *rid,
388 u_long start, u_long end, u_long count, u_int flags)
389{
390 struct grackle_softc *sc;
391 struct resource *rv;
392 struct rman *rm;
393 int needactivate;
394
395 needactivate = flags & RF_ACTIVE;
396 flags &= ~RF_ACTIVE;
397
398 sc = device_get_softc(bus);
399
400 switch (type) {
401 case SYS_RES_MEMORY:
402 rm = &sc->sc_mem_rman;
403 break;
404
405 case SYS_RES_IOPORT:
406 rm = &sc->sc_io_rman;
407 break;
408
409 case SYS_RES_IRQ:
410 return (bus_alloc_resource(bus, type, rid, start, end, count,
411 flags));
412
413 default:
414 device_printf(bus, "unknown resource request from %s\n",
415 device_get_nameunit(child));
416 return (NULL);
417 }
418
419 rv = rman_reserve_resource(rm, start, end, count, flags, child);
420 if (rv == NULL) {
421 device_printf(bus, "failed to reserve resource for %s\n",
422 device_get_nameunit(child));
423 return (NULL);
424 }
425
426 rman_set_rid(rv, *rid);
427
428 if (needactivate) {
429 if (bus_activate_resource(child, type, *rid, rv) != 0) {
430 device_printf(bus,
431 "failed to activate resource for %s\n",
432 device_get_nameunit(child));
433 rman_release_resource(rv);
434 return (NULL);
435 }
436 }
437
438 return (rv);
439}
440
441static int
442grackle_release_resource(device_t bus, device_t child, int type, int rid,
443 struct resource *res)
444{
445 if (rman_get_flags(res) & RF_ACTIVE) {
446 int error = bus_deactivate_resource(child, type, rid, res);
447 if (error)
448 return error;
449 }
450
451 return (rman_release_resource(res));
452}
453
454static int
455grackle_activate_resource(device_t bus, device_t child, int type, int rid,
456 struct resource *res)
457{
458 struct grackle_softc *sc;
459 void *p;
460
461 sc = device_get_softc(bus);
462
463 if (type == SYS_RES_IRQ) {
464 return (bus_activate_resource(bus, type, rid, res));
465 }
466 if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) {
467 vm_offset_t start;
468
469 start = (vm_offset_t)rman_get_start(res);
470 /*
471 * For i/o-ports, convert the start address to the
472 * MPC106 PCI i/o window
473 */
474 if (type == SYS_RES_IOPORT)
475 start += sc->sc_iostart;
476
477 if (bootverbose)
478 printf("grackle mapdev: start %zx, len %ld\n", start,
479 rman_get_size(res));
480
481 p = pmap_mapdev(start, (vm_size_t)rman_get_size(res));
482 if (p == NULL)
483 return (ENOMEM);
484
485 rman_set_virtual(res, p);
486 rman_set_bustag(res, &bs_le_tag);
487 rman_set_bushandle(res, (u_long)p);
488 }
489
490 return (rman_activate_resource(res));
491}
492
493static int
494grackle_deactivate_resource(device_t bus, device_t child, int type, int rid,
495 struct resource *res)
496{
497 /*
498 * If this is a memory resource, unmap it.
499 */
500 if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) {
501 u_int32_t psize;
502
503 psize = rman_get_size(res);
504 pmap_unmapdev((vm_offset_t)rman_get_virtual(res), psize);
505 }
506
507 return (rman_deactivate_resource(res));
508}
509
510
511static int
512grackle_enable_config(struct grackle_softc *sc, u_int bus, u_int slot,
513 u_int func, u_int reg)
514{
515 u_int32_t cfgval;
516
517 /*
518 * Unlike UniNorth, the format of the config word is the same
519 * for local (0) and remote busses.
520 */
521 cfgval = (bus << 16) | (slot << 11) | (func << 8) | (reg & 0xFC)
522 | GRACKLE_CFG_ENABLE;
523
524 out32rb(sc->sc_addr, cfgval);
525 (void) in32rb(sc->sc_addr);
526
527 return (1);
528}
529
530static void
531grackle_disable_config(struct grackle_softc *sc)
532{
533 /*
534 * Clear the GRACKLE_CFG_ENABLE bit to prevent stray
535 * accesses from causing config cycles
536 */
537 out32rb(sc->sc_addr, 0);
538}
539
540static phandle_t
541grackle_get_node(device_t bus, device_t dev)
542{
543 struct grackle_softc *sc;
544
545 sc = device_get_softc(bus);
546 /* We only have one child, the PCI bus, which needs our own node. */
547
548 return sc->sc_node;
549}
550
551/*
552 * Driver to swallow Grackle host bridges from the PCI bus side.
553 */
554static int
555grackle_hb_probe(device_t dev)
556{
557
558 if (pci_get_devid(dev) == 0x00021057) {
559 device_set_desc(dev, "Grackle Host to PCI bridge");
560 device_quiet(dev);
561 return (0);
562 }
563
564 return (ENXIO);
565}
566
567static int
568grackle_hb_attach(device_t dev)
569{
570
571 return (0);
572}
573
574static device_method_t grackle_hb_methods[] = {
575 /* Device interface */
576 DEVMETHOD(device_probe, grackle_hb_probe),
577 DEVMETHOD(device_attach, grackle_hb_attach),
578
579 { 0, 0 }
580};
581
582static driver_t grackle_hb_driver = {
583 "grackle_hb",
584 grackle_hb_methods,
585 1,
586};
587static devclass_t grackle_hb_devclass;
588
589DRIVER_MODULE(grackle_hb, pci, grackle_hb_driver, grackle_hb_devclass, 0, 0);
| 357
358 /* Maybe it's a real interrupt, not an intpin */
359 if (pin > 4)
360 return (pin);
361
362 device_printf(bus, "could not route pin %d for device %d.%d\n",
363 pin, pci_get_slot(dev), pci_get_function(dev));
364 return (PCI_INVALID_IRQ);
365}
366
367static int
368grackle_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
369{
370 struct grackle_softc *sc;
371
372 sc = device_get_softc(dev);
373
374 switch (which) {
375 case PCIB_IVAR_DOMAIN:
376 *result = 0;
377 return (0);
378 case PCIB_IVAR_BUS:
379 *result = sc->sc_bus;
380 return (0);
381 }
382
383 return (ENOENT);
384}
385
386static struct resource *
387grackle_alloc_resource(device_t bus, device_t child, int type, int *rid,
388 u_long start, u_long end, u_long count, u_int flags)
389{
390 struct grackle_softc *sc;
391 struct resource *rv;
392 struct rman *rm;
393 int needactivate;
394
395 needactivate = flags & RF_ACTIVE;
396 flags &= ~RF_ACTIVE;
397
398 sc = device_get_softc(bus);
399
400 switch (type) {
401 case SYS_RES_MEMORY:
402 rm = &sc->sc_mem_rman;
403 break;
404
405 case SYS_RES_IOPORT:
406 rm = &sc->sc_io_rman;
407 break;
408
409 case SYS_RES_IRQ:
410 return (bus_alloc_resource(bus, type, rid, start, end, count,
411 flags));
412
413 default:
414 device_printf(bus, "unknown resource request from %s\n",
415 device_get_nameunit(child));
416 return (NULL);
417 }
418
419 rv = rman_reserve_resource(rm, start, end, count, flags, child);
420 if (rv == NULL) {
421 device_printf(bus, "failed to reserve resource for %s\n",
422 device_get_nameunit(child));
423 return (NULL);
424 }
425
426 rman_set_rid(rv, *rid);
427
428 if (needactivate) {
429 if (bus_activate_resource(child, type, *rid, rv) != 0) {
430 device_printf(bus,
431 "failed to activate resource for %s\n",
432 device_get_nameunit(child));
433 rman_release_resource(rv);
434 return (NULL);
435 }
436 }
437
438 return (rv);
439}
440
441static int
442grackle_release_resource(device_t bus, device_t child, int type, int rid,
443 struct resource *res)
444{
445 if (rman_get_flags(res) & RF_ACTIVE) {
446 int error = bus_deactivate_resource(child, type, rid, res);
447 if (error)
448 return error;
449 }
450
451 return (rman_release_resource(res));
452}
453
454static int
455grackle_activate_resource(device_t bus, device_t child, int type, int rid,
456 struct resource *res)
457{
458 struct grackle_softc *sc;
459 void *p;
460
461 sc = device_get_softc(bus);
462
463 if (type == SYS_RES_IRQ) {
464 return (bus_activate_resource(bus, type, rid, res));
465 }
466 if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) {
467 vm_offset_t start;
468
469 start = (vm_offset_t)rman_get_start(res);
470 /*
471 * For i/o-ports, convert the start address to the
472 * MPC106 PCI i/o window
473 */
474 if (type == SYS_RES_IOPORT)
475 start += sc->sc_iostart;
476
477 if (bootverbose)
478 printf("grackle mapdev: start %zx, len %ld\n", start,
479 rman_get_size(res));
480
481 p = pmap_mapdev(start, (vm_size_t)rman_get_size(res));
482 if (p == NULL)
483 return (ENOMEM);
484
485 rman_set_virtual(res, p);
486 rman_set_bustag(res, &bs_le_tag);
487 rman_set_bushandle(res, (u_long)p);
488 }
489
490 return (rman_activate_resource(res));
491}
492
493static int
494grackle_deactivate_resource(device_t bus, device_t child, int type, int rid,
495 struct resource *res)
496{
497 /*
498 * If this is a memory resource, unmap it.
499 */
500 if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) {
501 u_int32_t psize;
502
503 psize = rman_get_size(res);
504 pmap_unmapdev((vm_offset_t)rman_get_virtual(res), psize);
505 }
506
507 return (rman_deactivate_resource(res));
508}
509
510
511static int
512grackle_enable_config(struct grackle_softc *sc, u_int bus, u_int slot,
513 u_int func, u_int reg)
514{
515 u_int32_t cfgval;
516
517 /*
518 * Unlike UniNorth, the format of the config word is the same
519 * for local (0) and remote busses.
520 */
521 cfgval = (bus << 16) | (slot << 11) | (func << 8) | (reg & 0xFC)
522 | GRACKLE_CFG_ENABLE;
523
524 out32rb(sc->sc_addr, cfgval);
525 (void) in32rb(sc->sc_addr);
526
527 return (1);
528}
529
530static void
531grackle_disable_config(struct grackle_softc *sc)
532{
533 /*
534 * Clear the GRACKLE_CFG_ENABLE bit to prevent stray
535 * accesses from causing config cycles
536 */
537 out32rb(sc->sc_addr, 0);
538}
539
540static phandle_t
541grackle_get_node(device_t bus, device_t dev)
542{
543 struct grackle_softc *sc;
544
545 sc = device_get_softc(bus);
546 /* We only have one child, the PCI bus, which needs our own node. */
547
548 return sc->sc_node;
549}
550
551/*
552 * Driver to swallow Grackle host bridges from the PCI bus side.
553 */
554static int
555grackle_hb_probe(device_t dev)
556{
557
558 if (pci_get_devid(dev) == 0x00021057) {
559 device_set_desc(dev, "Grackle Host to PCI bridge");
560 device_quiet(dev);
561 return (0);
562 }
563
564 return (ENXIO);
565}
566
567static int
568grackle_hb_attach(device_t dev)
569{
570
571 return (0);
572}
573
574static device_method_t grackle_hb_methods[] = {
575 /* Device interface */
576 DEVMETHOD(device_probe, grackle_hb_probe),
577 DEVMETHOD(device_attach, grackle_hb_attach),
578
579 { 0, 0 }
580};
581
582static driver_t grackle_hb_driver = {
583 "grackle_hb",
584 grackle_hb_methods,
585 1,
586};
587static devclass_t grackle_hb_devclass;
588
589DRIVER_MODULE(grackle_hb, pci, grackle_hb_driver, grackle_hb_devclass, 0, 0);
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