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
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_LOCK(nfsmb) mtx_lock(&(nfsmb)->lock)
95 #define NFSMB_UNLOCK(nfsmb) mtx_unlock(&(nfsmb)->lock)
96 #define NFSMB_LOCK_ASSERT(nfsmb) mtx_assert(&(nfsmb)->lock, MA_OWNED)
98 #define NFSMB_SMBINB(nfsmb, register) \
99 (bus_space_read_1(nfsmb->smbst, nfsmb->smbsh, register))
100 #define NFSMB_SMBOUTB(nfsmb, register, value) \
101 (bus_space_write_1(nfsmb->smbst, nfsmb->smbsh, register, value))
103 static int nfsmb_detach(device_t dev);
104 static int nfsmbsub_detach(device_t dev);
107 nfsmbsub_probe(device_t dev)
110 device_set_desc(dev, "nForce2/3/4 MCP SMBus Controller");
111 return (BUS_PROBE_DEFAULT);
115 nfsmb_probe(device_t dev)
120 vid = pci_get_vendor(dev);
121 did = pci_get_device(dev);
123 if (vid == NFSMB_VENDORID_NVIDIA) {
125 case NFSMB_DEVICEID_NF2_SMB:
126 case NFSMB_DEVICEID_NF2_ULTRA_SMB:
127 case NFSMB_DEVICEID_NF3_PRO150_SMB:
128 case NFSMB_DEVICEID_NF3_250GB_SMB:
129 case NFSMB_DEVICEID_NF4_SMB:
130 case NFSMB_DEVICEID_NF4_04_SMB:
131 case NFSMB_DEVICEID_NF4_51_SMB:
132 case NFSMB_DEVICEID_NF4_55_SMB:
133 device_set_desc(dev, "nForce2/3/4 MCP SMBus Controller");
134 return (BUS_PROBE_DEFAULT);
142 nfsmbsub_attach(device_t dev)
145 struct nfsmb_softc *nfsmbsub_sc = device_get_softc(dev);
147 parent = device_get_parent(dev);
149 nfsmbsub_sc->rid = NF2PCI_SMBASE_2;
151 nfsmbsub_sc->res = bus_alloc_resource_any(parent, SYS_RES_IOPORT,
152 &nfsmbsub_sc->rid, RF_ACTIVE);
153 if (nfsmbsub_sc->res == NULL) {
154 /* Older incarnations of the device used non-standard BARs. */
155 nfsmbsub_sc->rid = 0x54;
156 nfsmbsub_sc->res = bus_alloc_resource_any(parent,
157 SYS_RES_IOPORT, &nfsmbsub_sc->rid, RF_ACTIVE);
158 if (nfsmbsub_sc->res == NULL) {
159 device_printf(dev, "could not map i/o space\n");
163 nfsmbsub_sc->smbst = rman_get_bustag(nfsmbsub_sc->res);
164 nfsmbsub_sc->smbsh = rman_get_bushandle(nfsmbsub_sc->res);
165 mtx_init(&nfsmbsub_sc->lock, device_get_nameunit(dev), "nfsmb",
168 nfsmbsub_sc->smbus = device_add_child(dev, "smbus", -1);
169 if (nfsmbsub_sc->smbus == NULL) {
170 nfsmbsub_detach(dev);
174 bus_generic_attach(dev);
180 nfsmb_attach(device_t dev)
182 struct nfsmb_softc *nfsmb_sc = device_get_softc(dev);
184 /* Allocate I/O space */
185 nfsmb_sc->rid = NF2PCI_SMBASE_1;
187 nfsmb_sc->res = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
188 &nfsmb_sc->rid, RF_ACTIVE);
190 if (nfsmb_sc->res == NULL) {
191 /* Older incarnations of the device used non-standard BARs. */
192 nfsmb_sc->rid = 0x50;
193 nfsmb_sc->res = bus_alloc_resource_any(dev,
194 SYS_RES_IOPORT, &nfsmb_sc->rid, RF_ACTIVE);
195 if (nfsmb_sc->res == NULL) {
196 device_printf(dev, "could not map i/o space\n");
201 nfsmb_sc->smbst = rman_get_bustag(nfsmb_sc->res);
202 nfsmb_sc->smbsh = rman_get_bushandle(nfsmb_sc->res);
203 mtx_init(&nfsmb_sc->lock, device_get_nameunit(dev), "nfsmb", MTX_DEF);
205 /* Allocate a new smbus device */
206 nfsmb_sc->smbus = device_add_child(dev, "smbus", -1);
207 if (!nfsmb_sc->smbus) {
212 nfsmb_sc->subdev = NULL;
213 switch (pci_get_device(dev)) {
214 case NFSMB_DEVICEID_NF2_SMB:
215 case NFSMB_DEVICEID_NF2_ULTRA_SMB:
216 case NFSMB_DEVICEID_NF3_PRO150_SMB:
217 case NFSMB_DEVICEID_NF3_250GB_SMB:
218 case NFSMB_DEVICEID_NF4_SMB:
219 case NFSMB_DEVICEID_NF4_04_SMB:
220 case NFSMB_DEVICEID_NF4_51_SMB:
221 case NFSMB_DEVICEID_NF4_55_SMB:
222 /* Trying to add secondary device as slave */
223 nfsmb_sc->subdev = device_add_child(dev, "nfsmb", -1);
224 if (!nfsmb_sc->subdev) {
233 bus_generic_attach(dev);
239 nfsmbsub_detach(device_t dev)
242 struct nfsmb_softc *nfsmbsub_sc = device_get_softc(dev);
244 parent = device_get_parent(dev);
246 if (nfsmbsub_sc->smbus) {
247 device_delete_child(dev, nfsmbsub_sc->smbus);
248 nfsmbsub_sc->smbus = NULL;
250 mtx_destroy(&nfsmbsub_sc->lock);
251 if (nfsmbsub_sc->res) {
252 bus_release_resource(parent, SYS_RES_IOPORT, nfsmbsub_sc->rid,
254 nfsmbsub_sc->res = NULL;
260 nfsmb_detach(device_t dev)
262 struct nfsmb_softc *nfsmb_sc = device_get_softc(dev);
264 if (nfsmb_sc->subdev) {
265 device_delete_child(dev, nfsmb_sc->subdev);
266 nfsmb_sc->subdev = NULL;
269 if (nfsmb_sc->smbus) {
270 device_delete_child(dev, nfsmb_sc->smbus);
271 nfsmb_sc->smbus = NULL;
274 mtx_destroy(&nfsmb_sc->lock);
276 bus_release_resource(dev, SYS_RES_IOPORT, nfsmb_sc->rid,
278 nfsmb_sc->res = NULL;
285 nfsmb_callback(device_t dev, int index, void *data)
290 case SMB_REQUEST_BUS:
291 case SMB_RELEASE_BUS:
301 nfsmb_wait(struct nfsmb_softc *sc)
306 NFSMB_LOCK_ASSERT(sc);
307 if (NFSMB_SMBINB(sc, SMB_PRTCL) != 0)
312 } while (NFSMB_SMBINB(sc, SMB_PRTCL) != 0 && count--);
314 return (SMB_ETIMEOUT);
317 sts = NFSMB_SMBINB(sc, SMB_STS) & SMB_STS_STATUS;
318 NFSMB_DEBUG(printf("nfsmb: STS=0x%x\n", sts));
331 error = SMB_ETIMEOUT;
336 error = SMB_ENOTSUPP;
347 nfsmb_quick(device_t dev, u_char slave, int how)
349 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
353 protocol = SMB_PRTCL_QUICK;
357 protocol |= SMB_PRTCL_WRITE;
358 NFSMB_DEBUG(printf("nfsmb: QWRITE to 0x%x", slave));
361 protocol |= SMB_PRTCL_READ;
362 NFSMB_DEBUG(printf("nfsmb: QREAD to 0x%x", slave));
365 panic("%s: unknown QUICK command (%x)!", __func__, how);
369 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
370 NFSMB_SMBOUTB(sc, SMB_PRTCL, protocol);
372 error = nfsmb_wait(sc);
374 NFSMB_DEBUG(printf(", error=0x%x\n", error));
381 nfsmb_sendb(device_t dev, u_char slave, char byte)
383 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
387 NFSMB_SMBOUTB(sc, SMB_CMD, byte);
388 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
389 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_BYTE);
391 error = nfsmb_wait(sc);
393 NFSMB_DEBUG(printf("nfsmb: SENDB to 0x%x, byte=0x%x, error=0x%x\n", slave, byte, error));
400 nfsmb_recvb(device_t dev, u_char slave, char *byte)
402 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
406 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
407 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_BYTE);
409 if ((error = nfsmb_wait(sc)) == SMB_ENOERR)
410 *byte = NFSMB_SMBINB(sc, SMB_DATA);
412 NFSMB_DEBUG(printf("nfsmb: RECVB from 0x%x, byte=0x%x, error=0x%x\n", slave, *byte, error));
419 nfsmb_writeb(device_t dev, u_char slave, char cmd, char byte)
421 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
425 NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
426 NFSMB_SMBOUTB(sc, SMB_DATA, byte);
427 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
428 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_BYTE_DATA);
430 error = nfsmb_wait(sc);
432 NFSMB_DEBUG(printf("nfsmb: WRITEB to 0x%x, cmd=0x%x, byte=0x%x, error=0x%x\n", slave, cmd, byte, error));
439 nfsmb_readb(device_t dev, u_char slave, char cmd, char *byte)
441 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
445 NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
446 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
447 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_BYTE_DATA);
449 if ((error = nfsmb_wait(sc)) == SMB_ENOERR)
450 *byte = NFSMB_SMBINB(sc, SMB_DATA);
452 NFSMB_DEBUG(printf("nfsmb: READB from 0x%x, cmd=0x%x, byte=0x%x, error=0x%x\n", slave, cmd, (unsigned char)*byte, error));
459 nfsmb_writew(device_t dev, u_char slave, char cmd, short word)
461 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
465 NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
466 NFSMB_SMBOUTB(sc, SMB_DATA, word);
467 NFSMB_SMBOUTB(sc, SMB_DATA + 1, word >> 8);
468 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
469 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_WORD_DATA);
471 error = nfsmb_wait(sc);
473 NFSMB_DEBUG(printf("nfsmb: WRITEW to 0x%x, cmd=0x%x, word=0x%x, error=0x%x\n", slave, cmd, word, error));
480 nfsmb_readw(device_t dev, u_char slave, char cmd, short *word)
482 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
486 NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
487 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
488 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_WORD_DATA);
490 if ((error = nfsmb_wait(sc)) == SMB_ENOERR)
491 *word = NFSMB_SMBINB(sc, SMB_DATA) |
492 (NFSMB_SMBINB(sc, SMB_DATA + 1) << 8);
494 NFSMB_DEBUG(printf("nfsmb: READW from 0x%x, cmd=0x%x, word=0x%x, error=0x%x\n", slave, cmd, (unsigned short)*word, error));
501 nfsmb_bwrite(device_t dev, u_char slave, char cmd, u_char count, char *buf)
503 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
507 if (count < 1 || count > 32)
511 NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
512 NFSMB_SMBOUTB(sc, SMB_BCNT, count);
513 for (i = 0; i < count; i++)
514 NFSMB_SMBOUTB(sc, SMB_DATA + i, buf[i]);
515 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
516 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_BLOCK_DATA);
518 error = nfsmb_wait(sc);
520 NFSMB_DEBUG(printf("nfsmb: WRITEBLK to 0x%x, count=0x%x, cmd=0x%x, error=0x%x", slave, count, cmd, error));
527 nfsmb_bread(device_t dev, u_char slave, char cmd, u_char *count, char *buf)
529 struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
533 if (*count < 1 || *count > 32)
537 NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
538 NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
539 NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_BLOCK_DATA);
541 if ((error = nfsmb_wait(sc)) == SMB_ENOERR) {
542 len = NFSMB_SMBINB(sc, SMB_BCNT);
543 for (i = 0; i < len; i++) {
544 data = NFSMB_SMBINB(sc, SMB_DATA + i);
551 NFSMB_DEBUG(printf("nfsmb: READBLK to 0x%x, count=0x%x, cmd=0x%x, error=0x%x", slave, *count, cmd, error));
557 static device_method_t nfsmb_methods[] = {
558 /* Device interface */
559 DEVMETHOD(device_probe, nfsmb_probe),
560 DEVMETHOD(device_attach, nfsmb_attach),
561 DEVMETHOD(device_detach, nfsmb_detach),
563 /* SMBus interface */
564 DEVMETHOD(smbus_callback, nfsmb_callback),
565 DEVMETHOD(smbus_quick, nfsmb_quick),
566 DEVMETHOD(smbus_sendb, nfsmb_sendb),
567 DEVMETHOD(smbus_recvb, nfsmb_recvb),
568 DEVMETHOD(smbus_writeb, nfsmb_writeb),
569 DEVMETHOD(smbus_readb, nfsmb_readb),
570 DEVMETHOD(smbus_writew, nfsmb_writew),
571 DEVMETHOD(smbus_readw, nfsmb_readw),
572 DEVMETHOD(smbus_bwrite, nfsmb_bwrite),
573 DEVMETHOD(smbus_bread, nfsmb_bread),
578 static device_method_t nfsmbsub_methods[] = {
579 /* Device interface */
580 DEVMETHOD(device_probe, nfsmbsub_probe),
581 DEVMETHOD(device_attach, nfsmbsub_attach),
582 DEVMETHOD(device_detach, nfsmbsub_detach),
584 /* SMBus interface */
585 DEVMETHOD(smbus_callback, nfsmb_callback),
586 DEVMETHOD(smbus_quick, nfsmb_quick),
587 DEVMETHOD(smbus_sendb, nfsmb_sendb),
588 DEVMETHOD(smbus_recvb, nfsmb_recvb),
589 DEVMETHOD(smbus_writeb, nfsmb_writeb),
590 DEVMETHOD(smbus_readb, nfsmb_readb),
591 DEVMETHOD(smbus_writew, nfsmb_writew),
592 DEVMETHOD(smbus_readw, nfsmb_readw),
593 DEVMETHOD(smbus_bwrite, nfsmb_bwrite),
594 DEVMETHOD(smbus_bread, nfsmb_bread),
599 static devclass_t nfsmb_devclass;
601 static driver_t nfsmb_driver = {
604 sizeof(struct nfsmb_softc),
607 static driver_t nfsmbsub_driver = {
610 sizeof(struct nfsmb_softc),
613 DRIVER_MODULE(nfsmb, pci, nfsmb_driver, nfsmb_devclass, 0, 0);
614 DRIVER_MODULE(nfsmb, nfsmb, nfsmbsub_driver, nfsmb_devclass, 0, 0);
615 DRIVER_MODULE(smbus, nfsmb, smbus_driver, smbus_devclass, 0, 0);
617 MODULE_DEPEND(nfsmb, pci, 1, 1, 1);
618 MODULE_DEPEND(nfsmb, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER);
619 MODULE_VERSION(nfsmb, 1);