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diff --git a/share/man/man4/asmc.4 b/share/man/man4/asmc.4
--- a/share/man/man4/asmc.4
+++ b/share/man/man4/asmc.4
@@ -112,6 +112,35 @@
respectively.
.Pp
All values are in RPM.
+.Sh RAW SMC KEY ACCESS
+When the kernel is compiled with the
+.Dv ASMC_DEBUG
+option, a set of sysctl nodes is provided under
+.Va dev.asmc.%d.raw
+for reading and writing arbitrary SMC keys by name.
+.Pp
+.Bl -tag -width "dev.asmc.%d.raw.value" -compact
+.It Va dev.asmc.%d.raw.key
+Set the 4-character SMC key name to access (e.g.,\&
+.Dq AUPO ) .
+Setting this automatically queries the key's length and type.
+.It Va dev.asmc.%d.raw.value
+Read or write the key's value as a hex string.
+.It Va dev.asmc.%d.raw.len
+The auto-detected value length in bytes (read-only).
+.It Va dev.asmc.%d.raw.type
+The 4-character SMC type string (e.g.,\&
+.Dq ui8 ,
+.Dq flt )
+(read-only).
+.El
+.Pp
+Example usage:
+.Bd -literal -offset indent
+sysctl dev.asmc.0.raw.key=AUPO
+sysctl dev.asmc.0.raw.value
+sysctl dev.asmc.0.raw.value=01
+.Ed
.Sh SUDDEN MOTION SENSOR
The Sudden Motion Sensor (SMS for short) is a device that detects
laptop movement and notifies the operating system via an interrupt.
diff --git a/sys/dev/asmc/asmc.c b/sys/dev/asmc/asmc.c
--- a/sys/dev/asmc/asmc.c
+++ b/sys/dev/asmc/asmc.c
@@ -123,6 +123,15 @@
static int asmc_mbp_sysctl_light_left_10byte(SYSCTL_HANDLER_ARGS);
static int asmc_wol_sysctl(SYSCTL_HANDLER_ARGS);
+#ifdef ASMC_DEBUG
+/* Raw key access */
+static int asmc_key_getinfo(device_t, const char *, uint8_t *, char *);
+static int asmc_raw_key_sysctl(SYSCTL_HANDLER_ARGS);
+static int asmc_raw_value_sysctl(SYSCTL_HANDLER_ARGS);
+static int asmc_raw_len_sysctl(SYSCTL_HANDLER_ARGS);
+static int asmc_raw_type_sysctl(SYSCTL_HANDLER_ARGS);
+#endif
+
struct asmc_model {
const char *smc_model; /* smbios.system.product env var. */
const char *smc_desc; /* driver description */
@@ -828,6 +837,43 @@
}
}
+#ifdef ASMC_DEBUG
+ /*
+ * Raw SMC key access for debugging.
+ */
+ sc->sc_raw_tree = SYSCTL_ADD_NODE(sysctlctx,
+ SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
+ "raw", CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "Raw SMC key access");
+
+ SYSCTL_ADD_PROC(sysctlctx,
+ SYSCTL_CHILDREN(sc->sc_raw_tree),
+ OID_AUTO, "key",
+ CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE,
+ dev, 0, asmc_raw_key_sysctl, "A",
+ "SMC key name (4 chars)");
+
+ SYSCTL_ADD_PROC(sysctlctx,
+ SYSCTL_CHILDREN(sc->sc_raw_tree),
+ OID_AUTO, "value",
+ CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE,
+ dev, 0, asmc_raw_value_sysctl, "A",
+ "SMC key value (hex string)");
+
+ SYSCTL_ADD_PROC(sysctlctx,
+ SYSCTL_CHILDREN(sc->sc_raw_tree),
+ OID_AUTO, "len",
+ CTLTYPE_U8 | CTLFLAG_RD | CTLFLAG_MPSAFE,
+ dev, 0, asmc_raw_len_sysctl, "CU",
+ "SMC key value length");
+
+ SYSCTL_ADD_PROC(sysctlctx,
+ SYSCTL_CHILDREN(sc->sc_raw_tree),
+ OID_AUTO, "type",
+ CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE,
+ dev, 0, asmc_raw_type_sysctl, "A",
+ "SMC key type (4 chars)");
+#endif
+
if (model->smc_sms_x == NULL)
goto nosms;
@@ -1202,10 +1248,10 @@
asmc_key_dump(device_t dev, int number)
{
struct asmc_softc *sc = device_get_softc(dev);
- char key[5] = { 0 };
- char type[7] = { 0 };
+ char key[ASMC_KEYLEN + 1] = { 0 };
+ char type[ASMC_KEYINFO_RESPLEN + 1] = { 0 };
uint8_t index[4];
- uint8_t v[32];
+ uint8_t v[ASMC_MAXVAL];
uint8_t maxlen;
int i, error = 1, try = 0;
@@ -1214,40 +1260,40 @@
index[0] = (number >> 24) & 0xff;
index[1] = (number >> 16) & 0xff;
index[2] = (number >> 8) & 0xff;
- index[3] = (number) & 0xff;
+ index[3] = number & 0xff;
begin:
- if (asmc_command(dev, 0x12))
+ if (asmc_command(dev, ASMC_CMDGETBYINDEX))
goto out;
- for (i = 0; i < 4; i++) {
+ for (i = 0; i < ASMC_KEYLEN; i++) {
ASMC_DATAPORT_WRITE(sc, index[i]);
- if (asmc_wait(dev, 0x04))
+ if (asmc_wait(dev, ASMC_STATUS_AWAIT_DATA))
goto out;
}
- ASMC_DATAPORT_WRITE(sc, 4);
+ ASMC_DATAPORT_WRITE(sc, ASMC_KEYLEN);
- for (i = 0; i < 4; i++) {
- if (asmc_wait(dev, 0x05))
+ for (i = 0; i < ASMC_KEYLEN; i++) {
+ if (asmc_wait(dev, ASMC_STATUS_DATA_READY))
goto out;
key[i] = ASMC_DATAPORT_READ(sc);
}
- /* get type */
- if (asmc_command(dev, 0x13))
+ /* Get key info (length + type). */
+ if (asmc_command(dev, ASMC_CMDGETINFO))
goto out;
- for (i = 0; i < 4; i++) {
+ for (i = 0; i < ASMC_KEYLEN; i++) {
ASMC_DATAPORT_WRITE(sc, key[i]);
- if (asmc_wait(dev, 0x04))
+ if (asmc_wait(dev, ASMC_STATUS_AWAIT_DATA))
goto out;
}
- ASMC_DATAPORT_WRITE(sc, 6);
+ ASMC_DATAPORT_WRITE(sc, ASMC_KEYINFO_RESPLEN);
- for (i = 0; i < 6; i++) {
- if (asmc_wait(dev, 0x05))
+ for (i = 0; i < ASMC_KEYINFO_RESPLEN; i++) {
+ if (asmc_wait(dev, ASMC_STATUS_DATA_READY))
goto out;
type[i] = ASMC_DATAPORT_READ(sc);
}
@@ -1255,41 +1301,188 @@
error = 0;
out:
if (error) {
- if (++try < 10)
+ if (++try < ASMC_MAXRETRIES)
goto begin;
- device_printf(dev, "%s for key %s failed %d times, giving up\n",
- __func__, key, try);
- mtx_unlock_spin(&sc->sc_mtx);
- } else {
- char buf[1024];
- char buf2[8];
- mtx_unlock_spin(&sc->sc_mtx);
- maxlen = type[0];
- type[0] = ' ';
- type[5] = 0;
- if (maxlen > sizeof(v)) {
- device_printf(dev,
- "WARNING: cropping maxlen from %d to %zu\n", maxlen,
- sizeof(v));
- maxlen = sizeof(v);
- }
- for (i = 0; i < sizeof(v); i++) {
- v[i] = 0;
- }
- asmc_key_read(dev, key, v, maxlen);
- snprintf(buf, sizeof(buf),
- "key %d is: %s, type %s (len %d), data",
- number, key, type, maxlen);
- for (i = 0; i < maxlen; i++) {
- snprintf(buf2, sizeof(buf2), " %02x", v[i]);
- strlcat(buf, buf2, sizeof(buf));
- }
- strlcat(buf, " \n", sizeof(buf));
- device_printf(dev, "%s", buf);
+ device_printf(dev,
+ "%s for key %d failed %d times, giving up\n",
+ __func__, number, try);
+ }
+ mtx_unlock_spin(&sc->sc_mtx);
+
+ if (error)
+ return (error);
+
+ maxlen = type[0];
+ type[0] = ' ';
+ type[5] = '\0';
+ if (maxlen > sizeof(v))
+ maxlen = sizeof(v);
+
+ memset(v, 0, sizeof(v));
+ error = asmc_key_read(dev, key, v, maxlen);
+ if (error)
+ return (error);
+
+ device_printf(dev, "key %d: %s, type%s (len %d), data",
+ number, key, type, maxlen);
+ for (i = 0; i < maxlen; i++)
+ printf(" %02x", v[i]);
+ printf("\n");
+
+ return (0);
+}
+
+/*
+ * Get key info (length and type) from SMC using command 0x13.
+ * Returns 0 on success, -1 on failure.
+ * If len is non-NULL, stores the key's value length.
+ * If type is non-NULL, stores the 4-char type string (must be at least 5 bytes).
+ */
+static int
+asmc_key_getinfo(device_t dev, const char *key, uint8_t *len, char *type)
+{
+ struct asmc_softc *sc = device_get_softc(dev);
+ uint8_t info[ASMC_KEYINFO_RESPLEN];
+ int i, error = -1, try = 0;
+
+ mtx_lock_spin(&sc->sc_mtx);
+
+begin:
+ if (asmc_command(dev, ASMC_CMDGETINFO))
+ goto out;
+
+ for (i = 0; i < ASMC_KEYLEN; i++) {
+ ASMC_DATAPORT_WRITE(sc, key[i]);
+ if (asmc_wait(dev, ASMC_STATUS_AWAIT_DATA))
+ goto out;
}
+ ASMC_DATAPORT_WRITE(sc, ASMC_KEYINFO_RESPLEN);
+
+ for (i = 0; i < ASMC_KEYINFO_RESPLEN; i++) {
+ if (asmc_wait(dev, ASMC_STATUS_DATA_READY))
+ goto out;
+ info[i] = ASMC_DATAPORT_READ(sc);
+ }
+
+ error = 0;
+out:
+ if (error && ++try < ASMC_MAXRETRIES)
+ goto begin;
+ mtx_unlock_spin(&sc->sc_mtx);
+
+ if (error == 0) {
+ if (len != NULL)
+ *len = info[0];
+ if (type != NULL) {
+ for (i = 0; i < ASMC_TYPELEN; i++)
+ type[i] = info[i + 1];
+ type[ASMC_TYPELEN] = '\0';
+ }
+ }
return (error);
}
+
+/*
+ * Raw SMC key access sysctls - enables reading/writing any SMC key by name
+ * Usage:
+ * sysctl dev.asmc.0.raw.key=AUPO # Set key, auto-detects length
+ * sysctl dev.asmc.0.raw.value # Read current value (hex bytes)
+ * sysctl dev.asmc.0.raw.value=01 # Write new value
+ */
+static int
+asmc_raw_key_sysctl(SYSCTL_HANDLER_ARGS)
+{
+ device_t dev = (device_t) arg1;
+ struct asmc_softc *sc = device_get_softc(dev);
+ char newkey[ASMC_KEYLEN + 1];
+ uint8_t keylen;
+ int error;
+
+ strlcpy(newkey, sc->sc_rawkey, sizeof(newkey));
+ error = sysctl_handle_string(oidp, newkey, sizeof(newkey), req);
+ if (error || req->newptr == NULL)
+ return (error);
+
+ if (strlen(newkey) != ASMC_KEYLEN)
+ return (EINVAL);
+
+ /* Get key info to auto-detect length and type */
+ if (asmc_key_getinfo(dev, newkey, &keylen, sc->sc_rawtype) != 0)
+ return (ENOENT);
+
+ if (keylen > ASMC_MAXVAL)
+ keylen = ASMC_MAXVAL;
+
+ strlcpy(sc->sc_rawkey, newkey, sizeof(sc->sc_rawkey));
+ sc->sc_rawlen = keylen;
+ memset(sc->sc_rawval, 0, sizeof(sc->sc_rawval));
+
+ /* Read the key value */
+ asmc_key_read(dev, sc->sc_rawkey, sc->sc_rawval, sc->sc_rawlen);
+
+ return (0);
+}
+
+static int
+asmc_raw_value_sysctl(SYSCTL_HANDLER_ARGS)
+{
+ device_t dev = (device_t) arg1;
+ struct asmc_softc *sc = device_get_softc(dev);
+ char hexbuf[ASMC_MAXVAL * 2 + 1];
+ int error, i;
+
+ /* Refresh from SMC if a key has been selected. */
+ if (sc->sc_rawkey[0] != '\0') {
+ asmc_key_read(dev, sc->sc_rawkey, sc->sc_rawval,
+ sc->sc_rawlen > 0 ? sc->sc_rawlen : ASMC_MAXVAL);
+ }
+
+ /* Format as hex string */
+ for (i = 0; i < sc->sc_rawlen && i < ASMC_MAXVAL; i++)
+ snprintf(hexbuf + i * 2, 3, "%02x", sc->sc_rawval[i]);
+ hexbuf[i * 2] = '\0';
+
+ error = sysctl_handle_string(oidp, hexbuf, sizeof(hexbuf), req);
+ if (error || req->newptr == NULL)
+ return (error);
+
+ /* Reject writes until a key is selected via raw.key. */
+ if (sc->sc_rawkey[0] == '\0')
+ return (EINVAL);
+
+ memset(sc->sc_rawval, 0, sizeof(sc->sc_rawval));
+ for (i = 0; i < sc->sc_rawlen && hexbuf[i*2] && hexbuf[i*2+1]; i++) {
+ unsigned int val;
+ char tmp[3] = { hexbuf[i*2], hexbuf[i*2+1], 0 };
+ if (sscanf(tmp, "%02x", &val) == 1)
+ sc->sc_rawval[i] = (uint8_t)val;
+ }
+
+ if (asmc_key_write(dev, sc->sc_rawkey, sc->sc_rawval, sc->sc_rawlen) != 0)
+ return (EIO);
+
+ return (0);
+}
+
+static int
+asmc_raw_len_sysctl(SYSCTL_HANDLER_ARGS)
+{
+ device_t dev = (device_t) arg1;
+ struct asmc_softc *sc = device_get_softc(dev);
+
+ return (sysctl_handle_8(oidp, &sc->sc_rawlen, 0, req));
+}
+
+static int
+asmc_raw_type_sysctl(SYSCTL_HANDLER_ARGS)
+{
+ device_t dev = (device_t) arg1;
+ struct asmc_softc *sc = device_get_softc(dev);
+
+ return (sysctl_handle_string(oidp, sc->sc_rawtype,
+ sizeof(sc->sc_rawtype), req));
+}
#endif
static int
diff --git a/sys/dev/asmc/asmcvar.h b/sys/dev/asmc/asmcvar.h
--- a/sys/dev/asmc/asmcvar.h
+++ b/sys/dev/asmc/asmcvar.h
@@ -28,6 +28,9 @@
*/
#define ASMC_MAXFANS 6
+#define ASMC_MAXVAL 32 /* Maximum SMC value size */
+#define ASMC_KEYLEN 4 /* SMC key name length */
+#define ASMC_TYPELEN 4 /* SMC type string length */
struct asmc_softc {
device_t sc_dev;
@@ -53,6 +56,14 @@
uint8_t sc_sms_intr_works;
struct cdev *sc_kbd_bkl;
uint32_t sc_kbd_bkl_level;
+#ifdef ASMC_DEBUG
+ /* Raw key access */
+ struct sysctl_oid *sc_raw_tree;
+ char sc_rawkey[ASMC_KEYLEN + 1];
+ uint8_t sc_rawval[ASMC_MAXVAL];
+ uint8_t sc_rawlen;
+ char sc_rawtype[ASMC_TYPELEN + 1];
+#endif
};
/*
@@ -71,6 +82,14 @@
bus_write_1(sc->sc_ioport, 0x04, val)
#define ASMC_CMDREAD 0x10
#define ASMC_CMDWRITE 0x11
+#define ASMC_CMDGETBYINDEX 0x12
+#define ASMC_CMDGETINFO 0x13
+
+#define ASMC_STATUS_AWAIT_DATA 0x04
+#define ASMC_STATUS_DATA_READY 0x05
+
+#define ASMC_KEYINFO_RESPLEN 6 /* getinfo: 1 len + 4 type + 1 attr */
+#define ASMC_MAXRETRIES 10
/*
* Interrupt port.

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