6 #include <sys/kernel.h>
8 #include <sys/module.h>
10 #include <sys/systm.h>
12 #include <machine/bus.h>
13 #include <machine/resource.h>
16 #include <dev/pci/pcivar.h>
17 #include <dev/pci/pcireg.h>
19 #include <dev/smbus/smbconf.h>
22 #define NFSMB_DEBUG(x) if (nfsmb_debug) (x)
25 static int nfsmb_debug = 1;
27 static int nfsmb_debug = 0;
30 /* NVIDIA nForce2/3/4 MCP */
31 #define NFSMB_VENDORID_NVIDIA 0x10de
32 #define NFSMB_DEVICEID_NF2_SMB 0x0064
33 #define NFSMB_DEVICEID_NF2_ULTRA_SMB 0x0084
34 #define NFSMB_DEVICEID_NF3_PRO150_SMB 0x00d4
35 #define NFSMB_DEVICEID_NF3_250GB_SMB 0x00e4
36 #define NFSMB_DEVICEID_NF4_SMB 0x0052
37 #define NFSMB_DEVICEID_NF4_04_SMB 0x0034
38 #define NFSMB_DEVICEID_NF4_51_SMB 0x0264
39 #define NFSMB_DEVICEID_NF4_55_SMB 0x0368
40 #define NFSMB_DEVICEID_NF4_61_SMB 0x03eb
42 /* PCI Configuration space registers */
43 #define NF2PCI_SMBASE_1 PCIR_BAR(4)
44 #define NF2PCI_SMBASE_2 PCIR_BAR(5)
47 * ACPI 3.0, Chapter 12, SMBus Host Controller Interface.
49 #define SMB_PRTCL 0x00 /* protocol */
50 #define SMB_STS 0x01 /* status */
51 #define SMB_ADDR 0x02 /* address */
52 #define SMB_CMD 0x03 /* command */
53 #define SMB_DATA 0x04 /* 32 data registers */
54 #define SMB_BCNT 0x24 /* number of data bytes */
55 #define SMB_ALRM_A 0x25 /* alarm address */
56 #define SMB_ALRM_D 0x26 /* 2 bytes alarm data */
58 #define SMB_STS_DONE 0x80
59 #define SMB_STS_ALRM 0x40
60 #define SMB_STS_RES 0x20
61 #define SMB_STS_STATUS 0x1f
62 #define SMB_STS_OK 0x00 /* OK */
63 #define SMB_STS_UF 0x07 /* Unknown Failure */
64 #define SMB_STS_DANA 0x10 /* Device Address Not Acknowledged */
65 #define SMB_STS_DED 0x11 /* Device Error Detected */
66 #define SMB_STS_DCAD 0x12 /* Device Command Access Denied */
67 #define SMB_STS_UE 0x13 /* Unknown Error */
68 #define SMB_STS_DAD 0x17 /* Device Access Denied */
69 #define SMB_STS_T 0x18 /* Timeout */
70 #define SMB_STS_HUP 0x19 /* Host Unsupported Protocol */
71 #define SMB_STS_B 0x1A /* Busy */
72 #define SMB_STS_PEC 0x1F /* PEC (CRC-8) Error */
74 #define SMB_PRTCL_WRITE 0x00
75 #define SMB_PRTCL_READ 0x01
76 #define SMB_PRTCL_QUICK 0x02
77 #define SMB_PRTCL_BYTE 0x04
78 #define SMB_PRTCL_BYTE_DATA 0x06
79 #define SMB_PRTCL_WORD_DATA 0x08
80 #define SMB_PRTCL_BLOCK_DATA 0x0a
81 #define SMB_PRTCL_PROC_CALL 0x0c
82 #define SMB_PRTCL_BLOCK_PROC_CALL 0x0d
83 #define SMB_PRTCL_PEC 0x80
88 bus_space_tag_t smbst;
89 bus_space_handle_t smbsh;
95 #define NFSMB_LOCK(nfsmb) mtx_lock(&(nfsmb)->lock)
96 #define NFSMB_UNLOCK(nfsmb) mtx_unlock(&(nfsmb)->lock)
97 #define NFSMB_LOCK_ASSERT(nfsmb) mtx_assert(&(nfsmb)->lock, MA_OWNED)
99 #define NFSMB_SMBINB(nfsmb, register) \
100 (bus_space_read_1(nfsmb->smbst, nfsmb->smbsh, register))
101 #define NFSMB_SMBOUTB(nfsmb, register, value) \
102 (bus_space_write_1(nfsmb->smbst, nfsmb->smbsh, register, value))
104 static int nfsmb_detach(device_t dev);
105 static int nfsmbsub_detach(device_t dev);
108 nfsmbsub_probe(device_t dev)
111 device_set_desc(dev, "nForce2/3/4 MCP SMBus Controller");
112 return (BUS_PROBE_DEFAULT);
116 nfsmb_probe(device_t dev)
121 vid = pci_get_vendor(dev);
122 did = pci_get_device(dev);
124 if (vid == NFSMB_VENDORID_NVIDIA) {
126 case NFSMB_DEVICEID_NF2_SMB:
127 case NFSMB_DEVICEID_NF2_ULTRA_SMB:
128 case NFSMB_DEVICEID_NF3_PRO150_SMB:
129 case NFSMB_DEVICEID_NF3_250GB_SMB:
130 case NFSMB_DEVICEID_NF4_SMB:
131 case NFSMB_DEVICEID_NF4_04_SMB:
132 case NFSMB_DEVICEID_NF4_51_SMB:
133 case NFSMB_DEVICEID_NF4_55_SMB:
134 case NFSMB_DEVICEID_NF4_61_SMB:
135 device_set_desc(dev, "nForce2/3/4 MCP SMBus Controller");
136 return (BUS_PROBE_DEFAULT);
144 nfsmbsub_attach(device_t dev)
147 struct nfsmb_softc *nfsmbsub_sc = device_get_softc(dev);
149 parent = device_get_parent(dev);
151 nfsmbsub_sc->rid = NF2PCI_SMBASE_2;
153 nfsmbsub_sc->res = bus_alloc_resource_any(parent, SYS_RES_IOPORT,
154 &nfsmbsub_sc->rid, RF_ACTIVE);
155 if (nfsmbsub_sc->res == NULL) {
156 /* Older incarnations of the device used non-standard BARs. */
157 nfsmbsub_sc->rid = 0x54;
158 nfsmbsub_sc->res = bus_alloc_resource_any(parent,
159 SYS_RES_IOPORT, &nfsmbsub_sc->rid, RF_ACTIVE);
160 if (nfsmbsub_sc->res == NULL) {
161 device_printf(dev, "could not map i/o space\n");
165 nfsmbsub_sc->smbst = rman_get_bustag(nfsmbsub_sc->res);
166 nfsmbsub_sc->smbsh = rman_get_bushandle(nfsmbsub_sc->res);
167 mtx_init(&nfsmbsub_sc->lock, device_get_nameunit(dev), "nfsmb",
170 nfsmbsub_sc->smbus = device_add_child(dev, "smbus", -1);
171 if (nfsmbsub_sc->smbus == NULL) {
172 nfsmbsub_detach(dev);
176 bus_generic_attach(dev);
182 nfsmb_attach(device_t dev)
184 struct nfsmb_softc *nfsmb_sc = device_get_softc(dev);
186 /* Allocate I/O space */
187 nfsmb_sc->rid = NF2PCI_SMBASE_1;
189 nfsmb_sc->res = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
190 &nfsmb_sc->rid, RF_ACTIVE);
192 if (nfsmb_sc->res == NULL) {
193 /* Older incarnations of the device used non-standard BARs. */
194 nfsmb_sc->rid = 0x50;
195 nfsmb_sc->res = bus_alloc_resource_any(dev,
196 SYS_RES_IOPORT, &nfsmb_sc->rid, RF_ACTIVE);
197 if (nfsmb_sc->res == NULL) {
198 device_printf(dev, "could not map i/o space\n");
203 nfsmb_sc->smbst = rman_get_bustag(nfsmb_sc->res);
204 nfsmb_sc->smbsh = rman_get_bushandle(nfsmb_sc->res);
205 mtx_init(&nfsmb_sc->lock, device_get_nameunit(dev), "nfsmb", MTX_DEF);
207 /* Allocate a new smbus device */
208 nfsmb_sc->smbus = device_add_child(dev, "smbus", -1);
209 if (!nfsmb_sc->smbus) {
214 nfsmb_sc->subdev = NULL;
215 switch (pci_get_device(dev)) {
216 case NFSMB_DEVICEID_NF2_SMB:
217 case NFSMB_DEVICEID_NF2_ULTRA_SMB:
218 case NFSMB_DEVICEID_NF3_PRO150_SMB:
219 case NFSMB_DEVICEID_NF3_250GB_SMB:
220 case NFSMB_DEVICEID_NF4_SMB:
221 case NFSMB_DEVICEID_NF4_04_SMB:
222 case NFSMB_DEVICEID_NF4_51_SMB:
223 case NFSMB_DEVICEID_NF4_55_SMB:
224 case NFSMB_DEVICEID_NF4_61_SMB:
225 /* Trying to add secondary device as slave */
226 nfsmb_sc->subdev = device_add_child(dev, "nfsmb", -1);
227 if (!nfsmb_sc->subdev) {
236 bus_generic_attach(dev);
242 nfsmbsub_detach(device_t dev)
245 struct nfsmb_softc *nfsmbsub_sc = device_get_softc(dev);
247 parent = device_get_parent(dev);
249 if (nfsmbsub_sc->smbus) {
250 device_delete_child(dev, nfsmbsub_sc->smbus);
251 nfsmbsub_sc->smbus = NULL;
253 mtx_destroy(&nfsmbsub_sc->lock);
254 if (nfsmbsub_sc->res) {
255 bus_release_resource(parent, SYS_RES_IOPORT, nfsmbsub_sc->rid,
257 nfsmbsub_sc->res = NULL;
263 nfsmb_detach(device_t dev)
265 struct nfsmb_softc *nfsmb_sc = device_get_softc(dev);
267 if (nfsmb_sc->subdev) {
268 device_delete_child(dev, nfsmb_sc->subdev);
269 nfsmb_sc->subdev = NULL;
272 if (nfsmb_sc->smbus) {
273 device_delete_child(dev, nfsmb_sc->smbus);
274 nfsmb_sc->smbus = NULL;
277 mtx_destroy(&nfsmb_sc->lock);
279 bus_release_resource(dev, SYS_RES_IOPORT, nfsmb_sc->rid,
281 nfsmb_sc->res = NULL;
288 nfsmb_callback(device_t dev, int index, void *data)
293 case SMB_REQUEST_BUS:
294 case SMB_RELEASE_BUS:
304 nfsmb_wait(struct nfsmb_softc *sc)
309 NFSMB_LOCK_ASSERT(sc);
310 if (NFSMB_SMBINB(sc, SMB_PRTCL) != 0)
315 } while (NFSMB_SMBINB(sc, SMB_PRTCL) != 0 && count--);
317 return (SMB_ETIMEOUT);
320 sts = NFSMB_SMBINB(sc, SMB_STS) & SMB_STS_STATUS;
321 NFSMB_DEBUG(printf("nfsmb: STS=0x%x\n", sts));
334 error = SMB_ETIMEOUT;
339 error = SMB_ENOTSUPP;
350 nfsmb_quick(device_t dev, u_char slave, int how)
352 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
356 protocol = SMB_PRTCL_QUICK;
360 protocol |= SMB_PRTCL_WRITE;
361 NFSMB_DEBUG(printf("nfsmb: QWRITE to 0x%x", slave));
364 protocol |= SMB_PRTCL_READ;
365 NFSMB_DEBUG(printf("nfsmb: QREAD to 0x%x", slave));
368 panic("%s: unknown QUICK command (%x)!", __func__, how);
372 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
373 NFSMB_SMBOUTB(sc, SMB_PRTCL, protocol);
375 error = nfsmb_wait(sc);
377 NFSMB_DEBUG(printf(", error=0x%x\n", error));
384 nfsmb_sendb(device_t dev, u_char slave, char byte)
386 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
390 NFSMB_SMBOUTB(sc, SMB_CMD, byte);
391 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
392 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_BYTE);
394 error = nfsmb_wait(sc);
396 NFSMB_DEBUG(printf("nfsmb: SENDB to 0x%x, byte=0x%x, error=0x%x\n", slave, byte, error));
403 nfsmb_recvb(device_t dev, u_char slave, char *byte)
405 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
409 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
410 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_BYTE);
412 if ((error = nfsmb_wait(sc)) == SMB_ENOERR)
413 *byte = NFSMB_SMBINB(sc, SMB_DATA);
415 NFSMB_DEBUG(printf("nfsmb: RECVB from 0x%x, byte=0x%x, error=0x%x\n", slave, *byte, error));
422 nfsmb_writeb(device_t dev, u_char slave, char cmd, char byte)
424 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
428 NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
429 NFSMB_SMBOUTB(sc, SMB_DATA, byte);
430 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
431 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_BYTE_DATA);
433 error = nfsmb_wait(sc);
435 NFSMB_DEBUG(printf("nfsmb: WRITEB to 0x%x, cmd=0x%x, byte=0x%x, error=0x%x\n", slave, cmd, byte, error));
442 nfsmb_readb(device_t dev, u_char slave, char cmd, char *byte)
444 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
448 NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
449 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
450 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_BYTE_DATA);
452 if ((error = nfsmb_wait(sc)) == SMB_ENOERR)
453 *byte = NFSMB_SMBINB(sc, SMB_DATA);
455 NFSMB_DEBUG(printf("nfsmb: READB from 0x%x, cmd=0x%x, byte=0x%x, error=0x%x\n", slave, cmd, (unsigned char)*byte, error));
462 nfsmb_writew(device_t dev, u_char slave, char cmd, short word)
464 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
468 NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
469 NFSMB_SMBOUTB(sc, SMB_DATA, word);
470 NFSMB_SMBOUTB(sc, SMB_DATA + 1, word >> 8);
471 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
472 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_WORD_DATA);
474 error = nfsmb_wait(sc);
476 NFSMB_DEBUG(printf("nfsmb: WRITEW to 0x%x, cmd=0x%x, word=0x%x, error=0x%x\n", slave, cmd, word, error));
483 nfsmb_readw(device_t dev, u_char slave, char cmd, short *word)
485 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
489 NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
490 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
491 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_WORD_DATA);
493 if ((error = nfsmb_wait(sc)) == SMB_ENOERR)
494 *word = NFSMB_SMBINB(sc, SMB_DATA) |
495 (NFSMB_SMBINB(sc, SMB_DATA + 1) << 8);
497 NFSMB_DEBUG(printf("nfsmb: READW from 0x%x, cmd=0x%x, word=0x%x, error=0x%x\n", slave, cmd, (unsigned short)*word, error));
504 nfsmb_bwrite(device_t dev, u_char slave, char cmd, u_char count, char *buf)
506 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
510 if (count < 1 || count > 32)
514 NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
515 NFSMB_SMBOUTB(sc, SMB_BCNT, count);
516 for (i = 0; i < count; i++)
517 NFSMB_SMBOUTB(sc, SMB_DATA + i, buf[i]);
518 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
519 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_BLOCK_DATA);
521 error = nfsmb_wait(sc);
523 NFSMB_DEBUG(printf("nfsmb: WRITEBLK to 0x%x, count=0x%x, cmd=0x%x, error=0x%x", slave, count, cmd, error));
530 nfsmb_bread(device_t dev, u_char slave, char cmd, u_char *count, char *buf)
532 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
536 if (*count < 1 || *count > 32)
540 NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
541 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
542 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_BLOCK_DATA);
544 if ((error = nfsmb_wait(sc)) == SMB_ENOERR) {
545 len = NFSMB_SMBINB(sc, SMB_BCNT);
546 for (i = 0; i < len; i++) {
547 data = NFSMB_SMBINB(sc, SMB_DATA + i);
554 NFSMB_DEBUG(printf("nfsmb: READBLK to 0x%x, count=0x%x, cmd=0x%x, error=0x%x", slave, *count, cmd, error));
560 static device_method_t nfsmb_methods[] = {
561 /* Device interface */
562 DEVMETHOD(device_probe, nfsmb_probe),
563 DEVMETHOD(device_attach, nfsmb_attach),
564 DEVMETHOD(device_detach, nfsmb_detach),
566 /* SMBus interface */
567 DEVMETHOD(smbus_callback, nfsmb_callback),
568 DEVMETHOD(smbus_quick, nfsmb_quick),
569 DEVMETHOD(smbus_sendb, nfsmb_sendb),
570 DEVMETHOD(smbus_recvb, nfsmb_recvb),
571 DEVMETHOD(smbus_writeb, nfsmb_writeb),
572 DEVMETHOD(smbus_readb, nfsmb_readb),
573 DEVMETHOD(smbus_writew, nfsmb_writew),
574 DEVMETHOD(smbus_readw, nfsmb_readw),
575 DEVMETHOD(smbus_bwrite, nfsmb_bwrite),
576 DEVMETHOD(smbus_bread, nfsmb_bread),
581 static device_method_t nfsmbsub_methods[] = {
582 /* Device interface */
583 DEVMETHOD(device_probe, nfsmbsub_probe),
584 DEVMETHOD(device_attach, nfsmbsub_attach),
585 DEVMETHOD(device_detach, nfsmbsub_detach),
587 /* SMBus interface */
588 DEVMETHOD(smbus_callback, nfsmb_callback),
589 DEVMETHOD(smbus_quick, nfsmb_quick),
590 DEVMETHOD(smbus_sendb, nfsmb_sendb),
591 DEVMETHOD(smbus_recvb, nfsmb_recvb),
592 DEVMETHOD(smbus_writeb, nfsmb_writeb),
593 DEVMETHOD(smbus_readb, nfsmb_readb),
594 DEVMETHOD(smbus_writew, nfsmb_writew),
595 DEVMETHOD(smbus_readw, nfsmb_readw),
596 DEVMETHOD(smbus_bwrite, nfsmb_bwrite),
597 DEVMETHOD(smbus_bread, nfsmb_bread),
602 static devclass_t nfsmb_devclass;
604 static driver_t nfsmb_driver = {
607 sizeof(struct nfsmb_softc),
610 static driver_t nfsmbsub_driver = {
613 sizeof(struct nfsmb_softc),
616 DRIVER_MODULE(nfsmb, pci, nfsmb_driver, nfsmb_devclass, 0, 0);
617 DRIVER_MODULE(nfsmb, nfsmb, nfsmbsub_driver, nfsmb_devclass, 0, 0);
618 DRIVER_MODULE(smbus, nfsmb, smbus_driver, smbus_devclass, 0, 0);
620 MODULE_DEPEND(nfsmb, pci, 1, 1, 1);
621 MODULE_DEPEND(nfsmb, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER);
622 MODULE_VERSION(nfsmb, 1);