5 #include <sys/kernel.h>
7 #include <sys/module.h>
11 #include <machine/bus.h>
12 #include <machine/resource.h>
15 #include <dev/pci/pcivar.h>
16 #include <dev/pci/pcireg.h>
18 #include <dev/iicbus/iiconf.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
41 /* PCI Configuration space registers */
42 #define NF2PCI_SMBASE_1 PCIR_BAR(4)
43 #define NF2PCI_SMBASE_2 PCIR_BAR(5)
46 * ACPI 3.0, Chapter 12, SMBus Host Controller Interface.
48 #define SMB_PRTCL 0x00 /* protocol */
49 #define SMB_STS 0x01 /* status */
50 #define SMB_ADDR 0x02 /* address */
51 #define SMB_CMD 0x03 /* command */
52 #define SMB_DATA 0x04 /* 32 data registers */
53 #define SMB_BCNT 0x24 /* number of data bytes */
54 #define SMB_ALRM_A 0x25 /* alarm address */
55 #define SMB_ALRM_D 0x26 /* 2 bytes alarm data */
57 #define SMB_STS_DONE 0x80
58 #define SMB_STS_ALRM 0x40
59 #define SMB_STS_RES 0x20
60 #define SMB_STS_STATUS 0x1f
61 #define SMB_STS_OK 0x00 /* OK */
62 #define SMB_STS_UF 0x07 /* Unknown Failure */
63 #define SMB_STS_DANA 0x10 /* Device Address Not Acknowledged */
64 #define SMB_STS_DED 0x11 /* Device Error Detected */
65 #define SMB_STS_DCAD 0x12 /* Device Command Access Denied */
66 #define SMB_STS_UE 0x13 /* Unknown Error */
67 #define SMB_STS_DAD 0x17 /* Device Access Denied */
68 #define SMB_STS_T 0x18 /* Timeout */
69 #define SMB_STS_HUP 0x19 /* Host Unsupported Protocol */
70 #define SMB_STS_B 0x1A /* Busy */
71 #define SMB_STS_PEC 0x1F /* PEC (CRC-8) Error */
73 #define SMB_PRTCL_WRITE 0x00
74 #define SMB_PRTCL_READ 0x01
75 #define SMB_PRTCL_QUICK 0x02
76 #define SMB_PRTCL_BYTE 0x04
77 #define SMB_PRTCL_BYTE_DATA 0x06
78 #define SMB_PRTCL_WORD_DATA 0x08
79 #define SMB_PRTCL_BLOCK_DATA 0x0a
80 #define SMB_PRTCL_PROC_CALL 0x0c
81 #define SMB_PRTCL_BLOCK_PROC_CALL 0x0d
82 #define SMB_PRTCL_PEC 0x80
87 bus_space_tag_t smbst;
88 bus_space_handle_t smbsh;
94 #define NFSMB_SMBINB(nfsmb, register) \
95 (bus_space_read_1(nfsmb->smbst, nfsmb->smbsh, register))
96 #define NFSMB_SMBOUTB(nfsmb, register, value) \
97 (bus_space_write_1(nfsmb->smbst, nfsmb->smbsh, register, value))
100 nfsmbsub_probe(device_t dev)
103 device_set_desc(dev, "nForce2/3/4 MCP SMBus Controller");
104 return (BUS_PROBE_DEFAULT);
108 nfsmb_probe(device_t dev)
113 vid = pci_get_vendor(dev);
114 did = pci_get_device(dev);
116 if (vid == NFSMB_VENDORID_NVIDIA) {
118 case NFSMB_DEVICEID_NF2_SMB:
119 case NFSMB_DEVICEID_NF2_ULTRA_SMB:
120 case NFSMB_DEVICEID_NF3_PRO150_SMB:
121 case NFSMB_DEVICEID_NF3_250GB_SMB:
122 case NFSMB_DEVICEID_NF4_SMB:
123 case NFSMB_DEVICEID_NF4_04_SMB:
124 case NFSMB_DEVICEID_NF4_51_SMB:
125 case NFSMB_DEVICEID_NF4_55_SMB:
126 device_set_desc(dev, "nForce2/3/4 MCP SMBus Controller");
127 return (BUS_PROBE_DEFAULT);
135 nfsmbsub_attach(device_t dev)
138 struct nfsmb_softc *nfsmbsub_sc = device_get_softc(dev);
140 parent = device_get_parent(dev);
142 nfsmbsub_sc->rid = NF2PCI_SMBASE_2;
144 nfsmbsub_sc->res = bus_alloc_resource_any(parent, SYS_RES_IOPORT,
145 &nfsmbsub_sc->rid, RF_ACTIVE);
146 if (nfsmbsub_sc->res == NULL) {
147 /* Older incarnations of the device used non-standard BARs. */
148 nfsmbsub_sc->rid = 0x54;
149 nfsmbsub_sc->res = bus_alloc_resource_any(parent,
150 SYS_RES_IOPORT, &nfsmbsub_sc->rid, RF_ACTIVE);
151 if (nfsmbsub_sc->res == NULL) {
152 device_printf(dev, "could not map i/o space\n");
156 nfsmbsub_sc->smbst = rman_get_bustag(nfsmbsub_sc->res);
157 nfsmbsub_sc->smbsh = rman_get_bushandle(nfsmbsub_sc->res);
159 nfsmbsub_sc->smbus = device_add_child(dev, "smbus", -1);
160 if (nfsmbsub_sc->smbus == NULL)
163 bus_generic_attach(dev);
169 nfsmb_attach(device_t dev)
171 struct nfsmb_softc *nfsmb_sc = device_get_softc(dev);
173 /* Allocate I/O space */
174 nfsmb_sc->rid = NF2PCI_SMBASE_1;
176 nfsmb_sc->res = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
177 &nfsmb_sc->rid, RF_ACTIVE);
179 if (nfsmb_sc->res == NULL) {
180 /* Older incarnations of the device used non-standard BARs. */
181 nfsmb_sc->rid = 0x50;
182 nfsmb_sc->res = bus_alloc_resource_any(dev,
183 SYS_RES_IOPORT, &nfsmb_sc->rid, RF_ACTIVE);
184 if (nfsmb_sc->res == NULL) {
185 device_printf(dev, "could not map i/o space\n");
190 nfsmb_sc->smbst = rman_get_bustag(nfsmb_sc->res);
191 nfsmb_sc->smbsh = rman_get_bushandle(nfsmb_sc->res);
193 /* Allocate a new smbus device */
194 nfsmb_sc->smbus = device_add_child(dev, "smbus", -1);
195 if (!nfsmb_sc->smbus)
198 nfsmb_sc->subdev = NULL;
199 switch (pci_get_device(dev)) {
200 case NFSMB_DEVICEID_NF2_SMB:
201 case NFSMB_DEVICEID_NF2_ULTRA_SMB:
202 case NFSMB_DEVICEID_NF3_PRO150_SMB:
203 case NFSMB_DEVICEID_NF3_250GB_SMB:
204 case NFSMB_DEVICEID_NF4_SMB:
205 case NFSMB_DEVICEID_NF4_04_SMB:
206 case NFSMB_DEVICEID_NF4_51_SMB:
207 case NFSMB_DEVICEID_NF4_55_SMB:
208 /* Trying to add secondary device as slave */
209 nfsmb_sc->subdev = device_add_child(dev, "nfsmb", -1);
210 if (!nfsmb_sc->subdev)
217 bus_generic_attach(dev);
223 nfsmbsub_detach(device_t dev)
226 struct nfsmb_softc *nfsmbsub_sc = device_get_softc(dev);
228 parent = device_get_parent(dev);
230 if (nfsmbsub_sc->smbus) {
231 device_delete_child(dev, nfsmbsub_sc->smbus);
232 nfsmbsub_sc->smbus = NULL;
234 if (nfsmbsub_sc->res) {
235 bus_release_resource(parent, SYS_RES_IOPORT, nfsmbsub_sc->rid,
237 nfsmbsub_sc->res = NULL;
243 nfsmb_detach(device_t dev)
245 struct nfsmb_softc *nfsmb_sc = device_get_softc(dev);
247 if (nfsmb_sc->subdev) {
248 device_delete_child(dev, nfsmb_sc->subdev);
249 nfsmb_sc->subdev = NULL;
252 if (nfsmb_sc->smbus) {
253 device_delete_child(dev, nfsmb_sc->smbus);
254 nfsmb_sc->smbus = NULL;
258 bus_release_resource(dev, SYS_RES_IOPORT, nfsmb_sc->rid,
260 nfsmb_sc->res = NULL;
267 nfsmb_callback(device_t dev, int index, void *data)
272 case SMB_REQUEST_BUS:
273 case SMB_RELEASE_BUS:
283 nfsmb_wait(struct nfsmb_softc *sc)
288 if (NFSMB_SMBINB(sc, SMB_PRTCL) != 0)
293 } while (NFSMB_SMBINB(sc, SMB_PRTCL) != 0 && count--);
295 return (SMB_ETIMEOUT);
298 sts = NFSMB_SMBINB(sc, SMB_STS) & SMB_STS_STATUS;
299 NFSMB_DEBUG(printf("nfsmb: STS=0x%x\n", sts));
312 error = SMB_ETIMEOUT;
317 error = SMB_ENOTSUPP;
328 nfsmb_quick(device_t dev, u_char slave, int how)
330 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
334 protocol = SMB_PRTCL_QUICK;
338 protocol |= SMB_PRTCL_WRITE;
339 NFSMB_DEBUG(printf("nfsmb: QWRITE to 0x%x", slave));
342 protocol |= SMB_PRTCL_READ;
343 NFSMB_DEBUG(printf("nfsmb: QREAD to 0x%x", slave));
346 panic("%s: unknown QUICK command (%x)!", __func__, how);
349 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
350 NFSMB_SMBOUTB(sc, SMB_PRTCL, protocol);
352 error = nfsmb_wait(sc);
354 NFSMB_DEBUG(printf(", error=0x%x\n", error));
360 nfsmb_sendb(device_t dev, u_char slave, char byte)
362 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
365 NFSMB_SMBOUTB(sc, SMB_CMD, byte);
366 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
367 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_BYTE);
369 error = nfsmb_wait(sc);
371 NFSMB_DEBUG(printf("nfsmb: SENDB to 0x%x, byte=0x%x, error=0x%x\n", slave, byte, error));
377 nfsmb_recvb(device_t dev, u_char slave, char *byte)
379 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
382 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
383 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_BYTE);
385 if ((error = nfsmb_wait(sc)) == SMB_ENOERR)
386 *byte = NFSMB_SMBINB(sc, SMB_DATA);
388 NFSMB_DEBUG(printf("nfsmb: RECVB from 0x%x, byte=0x%x, error=0x%x\n", slave, *byte, error));
394 nfsmb_writeb(device_t dev, u_char slave, char cmd, char byte)
396 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
399 NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
400 NFSMB_SMBOUTB(sc, SMB_DATA, byte);
401 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
402 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_BYTE_DATA);
404 error = nfsmb_wait(sc);
406 NFSMB_DEBUG(printf("nfsmb: WRITEB to 0x%x, cmd=0x%x, byte=0x%x, error=0x%x\n", slave, cmd, byte, error));
412 nfsmb_readb(device_t dev, u_char slave, char cmd, char *byte)
414 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
417 NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
418 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
419 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_BYTE_DATA);
421 if ((error = nfsmb_wait(sc)) == SMB_ENOERR)
422 *byte = NFSMB_SMBINB(sc, SMB_DATA);
424 NFSMB_DEBUG(printf("nfsmb: READB from 0x%x, cmd=0x%x, byte=0x%x, error=0x%x\n", slave, cmd, (unsigned char)*byte, error));
430 nfsmb_writew(device_t dev, u_char slave, char cmd, short word)
432 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
435 NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
436 NFSMB_SMBOUTB(sc, SMB_DATA, word);
437 NFSMB_SMBOUTB(sc, SMB_DATA + 1, word >> 8);
438 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
439 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_WORD_DATA);
441 error = nfsmb_wait(sc);
443 NFSMB_DEBUG(printf("nfsmb: WRITEW to 0x%x, cmd=0x%x, word=0x%x, error=0x%x\n", slave, cmd, word, error));
449 nfsmb_readw(device_t dev, u_char slave, char cmd, short *word)
451 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
454 NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
455 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
456 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_WORD_DATA);
458 if ((error = nfsmb_wait(sc)) == SMB_ENOERR)
459 *word = NFSMB_SMBINB(sc, SMB_DATA) |
460 (NFSMB_SMBINB(sc, SMB_DATA + 1) << 8);
462 NFSMB_DEBUG(printf("nfsmb: READW from 0x%x, cmd=0x%x, word=0x%x, error=0x%x\n", slave, cmd, (unsigned short)*word, error));
468 nfsmb_bwrite(device_t dev, u_char slave, char cmd, u_char count, char *buf)
470 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
474 if (count < 1 || count > 32)
476 NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
477 NFSMB_SMBOUTB(sc, SMB_BCNT, count);
478 for (i = 0; i < count; i++)
479 NFSMB_SMBOUTB(sc, SMB_DATA + i, buf[i]);
480 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
481 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_BLOCK_DATA);
483 error = nfsmb_wait(sc);
485 NFSMB_DEBUG(printf("nfsmb: WRITEBLK to 0x%x, count=0x%x, cmd=0x%x, error=0x%x", slave, count, cmd, error));
491 nfsmb_bread(device_t dev, u_char slave, char cmd, u_char *count, char *buf)
493 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
497 if (*count < 1 || *count > 32)
499 NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
500 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
501 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_BLOCK_DATA);
503 if ((error = nfsmb_wait(sc)) == SMB_ENOERR) {
504 len = NFSMB_SMBINB(sc, SMB_BCNT);
505 for (i = 0; i < len; i++) {
506 data = NFSMB_SMBINB(sc, SMB_DATA + i);
513 NFSMB_DEBUG(printf("nfsmb: READBLK to 0x%x, count=0x%x, cmd=0x%x, error=0x%x", slave, *count, cmd, error));
518 static device_method_t nfsmb_methods[] = {
519 /* Device interface */
520 DEVMETHOD(device_probe, nfsmb_probe),
521 DEVMETHOD(device_attach, nfsmb_attach),
522 DEVMETHOD(device_detach, nfsmb_detach),
524 /* SMBus interface */
525 DEVMETHOD(smbus_callback, nfsmb_callback),
526 DEVMETHOD(smbus_quick, nfsmb_quick),
527 DEVMETHOD(smbus_sendb, nfsmb_sendb),
528 DEVMETHOD(smbus_recvb, nfsmb_recvb),
529 DEVMETHOD(smbus_writeb, nfsmb_writeb),
530 DEVMETHOD(smbus_readb, nfsmb_readb),
531 DEVMETHOD(smbus_writew, nfsmb_writew),
532 DEVMETHOD(smbus_readw, nfsmb_readw),
533 DEVMETHOD(smbus_bwrite, nfsmb_bwrite),
534 DEVMETHOD(smbus_bread, nfsmb_bread),
539 static device_method_t nfsmbsub_methods[] = {
540 /* Device interface */
541 DEVMETHOD(device_probe, nfsmbsub_probe),
542 DEVMETHOD(device_attach, nfsmbsub_attach),
543 DEVMETHOD(device_detach, nfsmbsub_detach),
545 /* SMBus interface */
546 DEVMETHOD(smbus_callback, nfsmb_callback),
547 DEVMETHOD(smbus_quick, nfsmb_quick),
548 DEVMETHOD(smbus_sendb, nfsmb_sendb),
549 DEVMETHOD(smbus_recvb, nfsmb_recvb),
550 DEVMETHOD(smbus_writeb, nfsmb_writeb),
551 DEVMETHOD(smbus_readb, nfsmb_readb),
552 DEVMETHOD(smbus_writew, nfsmb_writew),
553 DEVMETHOD(smbus_readw, nfsmb_readw),
554 DEVMETHOD(smbus_bwrite, nfsmb_bwrite),
555 DEVMETHOD(smbus_bread, nfsmb_bread),
560 static devclass_t nfsmb_devclass;
562 static driver_t nfsmb_driver = {
565 sizeof(struct nfsmb_softc),
568 static driver_t nfsmbsub_driver = {
571 sizeof(struct nfsmb_softc),
574 DRIVER_MODULE(nfsmb, pci, nfsmb_driver, nfsmb_devclass, 0, 0);
575 DRIVER_MODULE(nfsmb, nfsmb, nfsmbsub_driver, nfsmb_devclass, 0, 0);
576 DRIVER_MODULE(smbus, nfsmb, smbus_driver, smbus_devclass, 0, 0);
578 MODULE_DEPEND(nfsmb, pci, 1, 1, 1);
579 MODULE_DEPEND(nfsmb, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER);
580 MODULE_VERSION(nfsmb, 1);