1 /*-
33 #include <sys/kernel.h>
60  * I/O registers offsets - the base address is programmed via the
63 #define SMBSTS		0x0	/* SMBus host/slave status register */
64 #define SMBCMD		0x1	/* SMBus host/slave command register */
130 #define	ALPM_LOCK(alpm)		mtx_lock(&(alpm)->lock)
131 #define	ALPM_UNLOCK(alpm)	mtx_unlock(&(alpm)->lock)
132 #define	ALPM_LOCK_ASSERT(alpm)	mtx_assert(&(alpm)->lock, MA_OWNED)
135 	(bus_space_read_1(alpm->smbst, alpm->smbsh, register))
137 	(bus_space_write_1(alpm->smbst, alpm->smbsh, register, value))
179 			(l & SMBHSI_SLAVE) ? "slave":"noslave");  in alpm_attach()
209 	alpm->res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,  in alpm_attach()
212 	if (alpm->res == NULL) {  in alpm_attach()
216 	alpm->smbst = rman_get_bustag(alpm->res);  in alpm_attach()
217 	alpm->smbsh = rman_get_bushandle(alpm->res);  in alpm_attach()
218 	mtx_init(&alpm->lock, device_get_nameunit(dev), "alpm", MTX_DEF);  in alpm_attach()
221 	alpm->smbus = device_add_child(dev, "smbus", DEVICE_UNIT_ANY);  in alpm_attach()
222 	if (alpm->smbus == NULL) {  in alpm_attach()
236 	if (alpm->smbus) {  in alpm_detach()
237 		device_delete_child(dev, alpm->smbus);  in alpm_detach()
238 		alpm->smbus = NULL;  in alpm_detach()
240 	mtx_destroy(&alpm->lock);  in alpm_detach()
242 	if (alpm->res)  in alpm_detach()
243 		bus_release_resource(dev, SYS_RES_IOPORT, SMBBA, alpm->res);  in alpm_detach()
307 	while (count--) {  in alpm_wait()
337 alpm_quick(device_t dev, u_char slave, int how)  in alpm_quick()  argument
351 		ALPM_DEBUG(printf("alpm: QWRITE to 0x%x", slave));  in alpm_quick()
352 		ALPM_SMBOUTB(sc, SMBHADDR, slave & ~LSB);  in alpm_quick()
355 		ALPM_DEBUG(printf("alpm: QREAD to 0x%x", slave));  in alpm_quick()
356 		ALPM_SMBOUTB(sc, SMBHADDR, slave | LSB);  in alpm_quick()
374 alpm_sendb(device_t dev, u_char slave, char byte)  in alpm_sendb()  argument
386 	ALPM_SMBOUTB(sc, SMBHADDR, slave & ~LSB);  in alpm_sendb()
393 	ALPM_DEBUG(printf("alpm: SENDB to 0x%x, byte=0x%x, error=0x%x\n", slave, byte, error));  in alpm_sendb()
400 alpm_recvb(device_t dev, u_char slave, char *byte)  in alpm_recvb()  argument
412 	ALPM_SMBOUTB(sc, SMBHADDR, slave | LSB);  in alpm_recvb()
419 	ALPM_DEBUG(printf("alpm: RECVB from 0x%x, byte=0x%x, error=0x%x\n", slave, *byte, error));  in alpm_recvb()
426 alpm_writeb(device_t dev, u_char slave, char cmd, char byte)  in alpm_writeb()  argument
438 	ALPM_SMBOUTB(sc, SMBHADDR, slave & ~LSB);  in alpm_writeb()
446 …ALPM_DEBUG(printf("alpm: WRITEB to 0x%x, cmd=0x%x, byte=0x%x, error=0x%x\n", slave, cmd, byte, err…  in alpm_writeb()
453 alpm_readb(device_t dev, u_char slave, char cmd, char *byte)  in alpm_readb()  argument
465 	ALPM_SMBOUTB(sc, SMBHADDR, slave | LSB);  in alpm_readb()
473 …ALPM_DEBUG(printf("alpm: READB from 0x%x, cmd=0x%x, byte=0x%x, error=0x%x\n", slave, cmd, *byte, e…  in alpm_readb()
480 alpm_writew(device_t dev, u_char slave, char cmd, short word)  in alpm_writew()  argument
492 	ALPM_SMBOUTB(sc, SMBHADDR, slave & ~LSB);  in alpm_writew()
501 …ALPM_DEBUG(printf("alpm: WRITEW to 0x%x, cmd=0x%x, word=0x%x, error=0x%x\n", slave, cmd, word, err…  in alpm_writew()
508 alpm_readw(device_t dev, u_char slave, char cmd, short *word)  in alpm_readw()  argument
521 	ALPM_SMBOUTB(sc, SMBHADDR, slave | LSB);  in alpm_readw()
533 …ALPM_DEBUG(printf("alpm: READW from 0x%x, cmd=0x%x, word=0x%x, error=0x%x\n", slave, cmd, *word, e…  in alpm_readw()
540 alpm_bwrite(device_t dev, u_char slave, char cmd, u_char count, char *buf)  in alpm_bwrite()  argument
556 	ALPM_SMBOUTB(sc, SMBHADDR, slave & ~LSB);  in alpm_bwrite()
559 	 * 32-byte long internal buffer */  in alpm_bwrite()
564 	/* fill the 32-byte internal buffer */  in alpm_bwrite()
574 …ALPM_DEBUG(printf("alpm: WRITEBLK to 0x%x, count=0x%x, cmd=0x%x, error=0x%x", slave, count, cmd, e…  in alpm_bwrite()
581 alpm_bread(device_t dev, u_char slave, char cmd, u_char *count, char *buf)  in alpm_bread()  argument
597 	ALPM_SMBOUTB(sc, SMBHADDR, slave | LSB);  in alpm_bread()
600 	 * 32-byte long internal buffer */  in alpm_bread()
611 	/* read the 32-byte internal buffer */  in alpm_bread()
621 …ALPM_DEBUG(printf("alpm: READBLK to 0x%x, count=0x%x, cmd=0x%x, error=0x%x", slave, *count, cmd, e…  in alpm_bread()