static void
acpi_cmbat_get_bst(void *arg)
{
struct acpi_cmbat_softc *sc;
ACPI_STATUS as;
ACPI_OBJECT *res;
ACPI_HANDLE h;
ACPI_BUFFER bst_buffer;
device_t dev;
ACPI_SERIAL_ASSERT(cmbat);
dev = arg;
sc = device_get_softc(dev);
h = acpi_get_handle(dev);
bst_buffer.Pointer = NULL;
bst_buffer.Length = ACPI_ALLOCATE_BUFFER;
if (!acpi_cmbat_info_expired(&sc->bst_lastupdated))
goto end;
as = AcpiEvaluateObject(h, "_BST", NULL, &bst_buffer);
if (ACPI_FAILURE(as)) {
ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
"error fetching current battery status -- %s\n",
AcpiFormatException(as));
goto end;
}
res = (ACPI_OBJECT *)bst_buffer.Pointer;
if (!ACPI_PKG_VALID(res, 4)) {
ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
"battery status corrupted\n");
goto end;
}
if (acpi_PkgInt32(res, 0, &sc->bst.state) != 0)
goto end;
if (acpi_PkgInt32(res, 1, &sc->bst.rate) != 0)
goto end;
if (acpi_PkgInt32(res, 2, &sc->bst.cap) != 0)
goto end;
if (acpi_PkgInt32(res, 3, &sc->bst.volt) != 0)
goto end;
acpi_cmbat_info_updated(&sc->bst_lastupdated);
/* XXX If all batteries are critical, perhaps we should suspend. */
if (sc->bst.state & ACPI_BATT_STAT_CRITICAL) {
if ((sc->flags & ACPI_BATT_STAT_CRITICAL) == 0) {
sc->flags |= ACPI_BATT_STAT_CRITICAL;
device_printf(dev, "critically low charge!\n");
}
} else
sc->flags &= ~ACPI_BATT_STAT_CRITICAL;
end:
if (bst_buffer.Pointer != NULL)
AcpiOsFree(bst_buffer.Pointer);
}
static int
acpi_ec_probe(device_t dev)
{
ACPI_BUFFER buf;
ACPI_HANDLE h;
ACPI_OBJECT *obj;
ACPI_STATUS status;
device_t peer;
char desc[64];
int ecdt;
int ret;
struct acpi_ec_params *params;
static char *ec_ids[] = { "PNP0C09", NULL };
/* Check that this is a device and that EC is not disabled. */
if (acpi_get_type(dev) != ACPI_TYPE_DEVICE || acpi_disabled("ec"))
return (ENXIO);
/*
* If probed via ECDT, set description and continue. Otherwise,
* we can access the namespace and make sure this is not a
* duplicate probe.
*/
ret = ENXIO;
ecdt = 0;
buf.Pointer = NULL;
buf.Length = ACPI_ALLOCATE_BUFFER;
params = acpi_get_private(dev);
if (params != NULL) {
ecdt = 1;
ret = 0;
} else if (ACPI_ID_PROBE(device_get_parent(dev), dev, ec_ids)) {
params = kmalloc(sizeof(struct acpi_ec_params), M_TEMP,
M_WAITOK | M_ZERO);
h = acpi_get_handle(dev);
/*
* Read the unit ID to check for duplicate attach and the
* global lock value to see if we should acquire it when
* accessing the EC.
*/
status = acpi_GetInteger(h, "_UID", ¶ms->uid);
if (ACPI_FAILURE(status))
params->uid = 0;
status = acpi_GetInteger(h, "_GLK", ¶ms->glk);
if (ACPI_FAILURE(status))
params->glk = 0;
/*
* Evaluate the _GPE method to find the GPE bit used by the EC to
* signal status (SCI). If it's a package, it contains a reference
* and GPE bit, similar to _PRW.
*/
status = AcpiEvaluateObject(h, "_GPE", NULL, &buf);
if (ACPI_FAILURE(status)) {
device_printf(dev, "can't evaluate _GPE - %s\n",
AcpiFormatException(status));
goto out;
}
obj = (ACPI_OBJECT *)buf.Pointer;
if (obj == NULL)
goto out;
switch (obj->Type) {
case ACPI_TYPE_INTEGER:
params->gpe_handle = NULL;
params->gpe_bit = obj->Integer.Value;
break;
case ACPI_TYPE_PACKAGE:
if (!ACPI_PKG_VALID(obj, 2))
goto out;
params->gpe_handle =
acpi_GetReference(NULL, &obj->Package.Elements[0]);
if (params->gpe_handle == NULL ||
acpi_PkgInt32(obj, 1, ¶ms->gpe_bit) != 0)
goto out;
break;
default:
device_printf(dev, "_GPE has invalid type %d\n", obj->Type);
goto out;
}
/* Store the values we got from the namespace for attach. */
acpi_set_private(dev, params);
/*
* Check for a duplicate probe. This can happen when a probe
* via ECDT succeeded already. If this is a duplicate, disable
* this device.
*/
peer = devclass_get_device(acpi_ec_devclass, params->uid);
if (peer == NULL || !device_is_alive(peer))
ret = 0;
else
device_disable(dev);
}
out:
if (ret == 0) {
ksnprintf(desc, sizeof(desc), "Embedded Controller: GPE %#x%s%s",
params->gpe_bit, (params->glk) ? ", GLK" : "",
ecdt ? ", ECDT" : "");
device_set_desc_copy(dev, desc);
}
if (ret > 0 && params)
kfree(params, M_TEMP);
if (buf.Pointer)
AcpiOsFree(buf.Pointer);
return (ret);
}
/*
* Parse a _CST package and set up its Cx states. Since the _CST object
* can change dynamically, our notify handler may call this function
* to clean up and probe the new _CST package.
*/
static int
acpi_cpu_cx_cst(struct acpi_cpu_softc *sc)
{
struct acpi_cx *cx_ptr;
ACPI_STATUS status;
ACPI_BUFFER buf;
ACPI_OBJECT *top;
ACPI_OBJECT *pkg;
uint32_t count;
int i;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
buf.Pointer = NULL;
buf.Length = ACPI_ALLOCATE_BUFFER;
status = AcpiEvaluateObject(sc->cpu_handle, "_CST", NULL, &buf);
if (ACPI_FAILURE(status))
return (ENXIO);
/* _CST is a package with a count and at least one Cx package. */
top = (ACPI_OBJECT *)buf.Pointer;
if (!ACPI_PKG_VALID(top, 2) || acpi_PkgInt32(top, 0, &count) != 0) {
device_printf(sc->cpu_dev, "invalid _CST package\n");
AcpiOsFree(buf.Pointer);
return (ENXIO);
}
if (count != top->Package.Count - 1) {
device_printf(sc->cpu_dev, "invalid _CST state count (%d != %d)\n",
count, top->Package.Count - 1);
count = top->Package.Count - 1;
}
if (count > MAX_CX_STATES) {
device_printf(sc->cpu_dev, "_CST has too many states (%d)\n", count);
count = MAX_CX_STATES;
}
/* Set up all valid states. */
sc->cpu_cx_count = 0;
cx_ptr = sc->cpu_cx_states;
for (i = 0; i < count; i++) {
pkg = &top->Package.Elements[i + 1];
if (!ACPI_PKG_VALID(pkg, 4) ||
acpi_PkgInt32(pkg, 1, &cx_ptr->type) != 0 ||
acpi_PkgInt32(pkg, 2, &cx_ptr->trans_lat) != 0 ||
acpi_PkgInt32(pkg, 3, &cx_ptr->power) != 0) {
device_printf(sc->cpu_dev, "skipping invalid Cx state package\n");
continue;
}
/* Validate the state to see if we should use it. */
switch (cx_ptr->type) {
case ACPI_STATE_C1:
sc->cpu_non_c3 = i;
cx_ptr++;
sc->cpu_cx_count++;
continue;
case ACPI_STATE_C2:
if (cx_ptr->trans_lat > 100) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"acpi_cpu%d: C2[%d] not available.\n",
device_get_unit(sc->cpu_dev), i));
continue;
}
sc->cpu_non_c3 = i;
break;
case ACPI_STATE_C3:
default:
if (cx_ptr->trans_lat > 1000 ||
(cpu_quirks & CPU_QUIRK_NO_C3) != 0) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"acpi_cpu%d: C3[%d] not available.\n",
device_get_unit(sc->cpu_dev), i));
continue;
}
break;
}
#ifdef notyet
/* Free up any previous register. */
if (cx_ptr->p_lvlx != NULL) {
bus_release_resource(sc->cpu_dev, 0, 0, cx_ptr->p_lvlx);
cx_ptr->p_lvlx = NULL;
}
#endif
/* Allocate the control register for C2 or C3. */
acpi_PkgGas(sc->cpu_dev, pkg, 0, &cx_ptr->res_type, &sc->cpu_rid,
&cx_ptr->p_lvlx, RF_SHAREABLE);
if (cx_ptr->p_lvlx) {
sc->cpu_rid++;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"acpi_cpu%d: Got C%d - %d latency\n",
device_get_unit(sc->cpu_dev), cx_ptr->type,
cx_ptr->trans_lat));
cx_ptr++;
sc->cpu_cx_count++;
}
}
AcpiOsFree(buf.Pointer);
return (0);
}
static void
acpi_cmbat_get_bif(void *arg)
{
struct acpi_cmbat_softc *sc;
ACPI_STATUS as;
ACPI_OBJECT *res;
ACPI_HANDLE h;
ACPI_BUFFER bif_buffer;
device_t dev;
ACPI_SERIAL_ASSERT(cmbat);
dev = arg;
sc = device_get_softc(dev);
h = acpi_get_handle(dev);
bif_buffer.Pointer = NULL;
bif_buffer.Length = ACPI_ALLOCATE_BUFFER;
as = AcpiEvaluateObject(h, "_BIF", NULL, &bif_buffer);
if (ACPI_FAILURE(as)) {
ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
"error fetching current battery info -- %s\n",
AcpiFormatException(as));
goto end;
}
res = (ACPI_OBJECT *)bif_buffer.Pointer;
if (!ACPI_PKG_VALID(res, 13)) {
ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
"battery info corrupted\n");
goto end;
}
if (acpi_PkgInt32(res, 0, &sc->bif.units) != 0)
goto end;
if (acpi_PkgInt32(res, 1, &sc->bif.dcap) != 0)
goto end;
if (acpi_PkgInt32(res, 2, &sc->bif.lfcap) != 0)
goto end;
if (acpi_PkgInt32(res, 3, &sc->bif.btech) != 0)
goto end;
if (acpi_PkgInt32(res, 4, &sc->bif.dvol) != 0)
goto end;
if (acpi_PkgInt32(res, 5, &sc->bif.wcap) != 0)
goto end;
if (acpi_PkgInt32(res, 6, &sc->bif.lcap) != 0)
goto end;
if (acpi_PkgInt32(res, 7, &sc->bif.gra1) != 0)
goto end;
if (acpi_PkgInt32(res, 8, &sc->bif.gra2) != 0)
goto end;
if (acpi_PkgStr(res, 9, sc->bif.model, ACPI_CMBAT_MAXSTRLEN) != 0)
goto end;
if (acpi_PkgStr(res, 10, sc->bif.serial, ACPI_CMBAT_MAXSTRLEN) != 0)
goto end;
if (acpi_PkgStr(res, 11, sc->bif.type, ACPI_CMBAT_MAXSTRLEN) != 0)
goto end;
if (acpi_PkgStr(res, 12, sc->bif.oeminfo, ACPI_CMBAT_MAXSTRLEN) != 0)
goto end;
end:
if (bif_buffer.Pointer != NULL)
AcpiOsFree(bif_buffer.Pointer);
}
/* Probe and setup any valid performance states (Px). */
static int
acpi_perf_evaluate(device_t dev)
{
struct acpi_perf_softc *sc;
ACPI_BUFFER buf;
ACPI_OBJECT *pkg, *res;
ACPI_STATUS status;
int count, error, i, j;
static int once = 1;
uint32_t *p;
/* Get the control values and parameters for each state. */
error = ENXIO;
sc = device_get_softc(dev);
buf.Pointer = NULL;
buf.Length = ACPI_ALLOCATE_BUFFER;
status = AcpiEvaluateObject(sc->handle, "_PSS", NULL, &buf);
if (ACPI_FAILURE(status))
return (ENXIO);
pkg = (ACPI_OBJECT *)buf.Pointer;
if (!ACPI_PKG_VALID(pkg, 1)) {
device_printf(dev, "invalid top level _PSS package\n");
goto out;
}
sc->px_count = pkg->Package.Count;
sc->px_states = malloc(sc->px_count * sizeof(struct acpi_px),
M_ACPIPERF, M_WAITOK | M_ZERO);
if (sc->px_states == NULL)
goto out;
/*
* Each state is a package of {CoreFreq, Power, TransitionLatency,
* BusMasterLatency, ControlVal, StatusVal}, sorted from highest
* performance to lowest.
*/
count = 0;
for (i = 0; i < sc->px_count; i++) {
res = &pkg->Package.Elements[i];
if (!ACPI_PKG_VALID(res, 6)) {
if (once) {
once = 0;
device_printf(dev, "invalid _PSS package\n");
}
continue;
}
/* Parse the rest of the package into the struct. */
p = &sc->px_states[count].core_freq;
for (j = 0; j < 6; j++, p++)
acpi_PkgInt32(res, j, p);
/*
* Check for some impossible frequencies that some systems
* use to indicate they don't actually support this Px state.
*/
if (sc->px_states[count].core_freq == 0 ||
sc->px_states[count].core_freq == 9999 ||
sc->px_states[count].core_freq == 0x9999 ||
sc->px_states[count].core_freq >= 0xffff)
continue;
/* Check for duplicate entries */
if (count > 0 &&
sc->px_states[count - 1].core_freq ==
sc->px_states[count].core_freq)
continue;
count++;
}
sc->px_count = count;
/* No valid Px state found so give up. */
if (count == 0)
goto out;
AcpiOsFree(buf.Pointer);
/* Get the control and status registers (one of each). */
buf.Pointer = NULL;
buf.Length = ACPI_ALLOCATE_BUFFER;
status = AcpiEvaluateObject(sc->handle, "_PCT", NULL, &buf);
if (ACPI_FAILURE(status))
goto out;
/* Check the package of two registers, each a Buffer in GAS format. */
pkg = (ACPI_OBJECT *)buf.Pointer;
if (!ACPI_PKG_VALID(pkg, 2)) {
device_printf(dev, "invalid perf register package\n");
goto out;
}
error = acpi_PkgGas(sc->dev, pkg, 0, &sc->perf_ctrl_type, &sc->px_rid,
&sc->perf_ctrl, 0);
if (error) {
/*
* If the register is of type FFixedHW, we can only return
* info, we can't get or set new settings.
*/
if (error == EOPNOTSUPP) {
sc->info_only = TRUE;
error = 0;
} else
device_printf(dev, "failed in PERF_CTL attach\n");
goto out;
}
sc->px_rid++;
error = acpi_PkgGas(sc->dev, pkg, 1, &sc->perf_sts_type, &sc->px_rid,
&sc->perf_status, 0);
if (error) {
if (error == EOPNOTSUPP) {
sc->info_only = TRUE;
error = 0;
} else
device_printf(dev, "failed in PERF_STATUS attach\n");
goto out;
}
sc->px_rid++;
/* Get our current limit and register for notifies. */
acpi_px_available(sc);
AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
acpi_px_notify, sc);
error = 0;
out:
if (error) {
if (sc->px_states) {
free(sc->px_states, M_ACPIPERF);
sc->px_states = NULL;
}
if (sc->perf_ctrl) {
bus_release_resource(sc->dev, sc->perf_ctrl_type, 0,
sc->perf_ctrl);
bus_delete_resource(sc->dev, sc->perf_ctrl_type, 0);
sc->perf_ctrl = NULL;
}
if (sc->perf_status) {
bus_release_resource(sc->dev, sc->perf_sts_type, 1,
sc->perf_status);
bus_delete_resource(sc->dev, sc->perf_sts_type, 1);
sc->perf_status = NULL;
}
sc->px_rid = 0;
sc->px_count = 0;
}
if (buf.Pointer)
AcpiOsFree(buf.Pointer);
return (error);
}
/*
* Parse a _CST package and set up its Cx states. Since the _CST object
* can change dynamically, our notify handler may call this function
* to clean up and probe the new _CST package.
*/
static int
acpi_cst_cx_probe_cst(struct acpi_cst_softc *sc, int reprobe)
{
struct acpi_cst_cx *cx_ptr;
ACPI_STATUS status;
ACPI_BUFFER buf;
ACPI_OBJECT *top;
ACPI_OBJECT *pkg;
uint32_t count;
int i;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
#ifdef INVARIANTS
if (reprobe)
KKASSERT(&curthread->td_msgport == netisr_cpuport(sc->cst_cpuid));
#endif
buf.Pointer = NULL;
buf.Length = ACPI_ALLOCATE_BUFFER;
status = AcpiEvaluateObject(sc->cst_handle, "_CST", NULL, &buf);
if (ACPI_FAILURE(status))
return (ENXIO);
/* _CST is a package with a count and at least one Cx package. */
top = (ACPI_OBJECT *)buf.Pointer;
if (!ACPI_PKG_VALID(top, 2) || acpi_PkgInt32(top, 0, &count) != 0) {
device_printf(sc->cst_dev, "invalid _CST package\n");
AcpiOsFree(buf.Pointer);
return (ENXIO);
}
if (count != top->Package.Count - 1) {
device_printf(sc->cst_dev, "invalid _CST state count (%d != %d)\n",
count, top->Package.Count - 1);
count = top->Package.Count - 1;
}
if (count > MAX_CX_STATES) {
device_printf(sc->cst_dev, "_CST has too many states (%d)\n", count);
count = MAX_CX_STATES;
}
sc->cst_flags |= ACPI_CST_FLAG_PROBING | ACPI_CST_FLAG_MATCH_HT;
cpu_sfence();
/*
* Free all previously allocated resources
*
* NOTE: It is needed for _CST reprobing.
*/
acpi_cst_free_resource(sc, 0);
/* Set up all valid states. */
sc->cst_cx_count = 0;
cx_ptr = sc->cst_cx_states;
for (i = 0; i < count; i++) {
int error;
pkg = &top->Package.Elements[i + 1];
if (!ACPI_PKG_VALID(pkg, 4) ||
acpi_PkgInt32(pkg, 1, &cx_ptr->type) != 0 ||
acpi_PkgInt32(pkg, 2, &cx_ptr->trans_lat) != 0 ||
acpi_PkgInt32(pkg, 3, &cx_ptr->power) != 0) {
device_printf(sc->cst_dev, "skipping invalid Cx state package\n");
continue;
}
/* Validate the state to see if we should use it. */
switch (cx_ptr->type) {
case ACPI_STATE_C1:
sc->cst_non_c3 = i;
cx_ptr->enter = acpi_cst_c1_halt_enter;
error = acpi_cst_cx_setup(cx_ptr);
if (error)
panic("C1 CST HALT setup failed: %d", error);
if (sc->cst_cx_count != 0) {
/*
* C1 is not the first C-state; something really stupid
* is going on ...
*/
sc->cst_flags &= ~ACPI_CST_FLAG_MATCH_HT;
}
cx_ptr++;
sc->cst_cx_count++;
continue;
case ACPI_STATE_C2:
sc->cst_non_c3 = i;
break;
case ACPI_STATE_C3:
default:
if ((acpi_cst_quirks & ACPI_CST_QUIRK_NO_C3) != 0) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"cpu_cst%d: C3[%d] not available.\n",
device_get_unit(sc->cst_dev), i));
continue;
}
break;
}
/*
* Allocate the control register for C2 or C3(+).
*/
KASSERT(cx_ptr->res == NULL, ("still has res"));
acpi_PkgRawGas(pkg, 0, &cx_ptr->gas);
/*
* We match number of C2/C3 for hyperthreads, only if the
* register is "Fixed Hardware", e.g. on most of the Intel
* CPUs. We don't have much to do for the rest of the
* register types.
*/
if (cx_ptr->gas.SpaceId != ACPI_ADR_SPACE_FIXED_HARDWARE)
sc->cst_flags &= ~ACPI_CST_FLAG_MATCH_HT;
cx_ptr->rid = sc->cst_parent->cpu_next_rid;
acpi_bus_alloc_gas(sc->cst_dev, &cx_ptr->res_type, &cx_ptr->rid,
&cx_ptr->gas, &cx_ptr->res, RF_SHAREABLE);
if (cx_ptr->res != NULL) {
sc->cst_parent->cpu_next_rid++;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"cpu_cst%d: Got C%d - %d latency\n",
device_get_unit(sc->cst_dev), cx_ptr->type,
cx_ptr->trans_lat));
cx_ptr->enter = acpi_cst_cx_io_enter;
cx_ptr->btag = rman_get_bustag(cx_ptr->res);
cx_ptr->bhand = rman_get_bushandle(cx_ptr->res);
error = acpi_cst_cx_setup(cx_ptr);
if (error)
panic("C%d CST I/O setup failed: %d", cx_ptr->type, error);
cx_ptr++;
sc->cst_cx_count++;
} else {
error = acpi_cst_cx_setup(cx_ptr);
if (!error) {
KASSERT(cx_ptr->enter != NULL,
("C%d enter is not set", cx_ptr->type));
cx_ptr++;
sc->cst_cx_count++;
}
}
}
AcpiOsFree(buf.Pointer);
if (sc->cst_flags & ACPI_CST_FLAG_MATCH_HT) {
cpumask_t mask;
mask = get_cpumask_from_level(sc->cst_cpuid, CORE_LEVEL);
if (CPUMASK_TESTNZERO(mask)) {
int cpu;
for (cpu = 0; cpu < ncpus; ++cpu) {
struct acpi_cst_softc *sc1 = acpi_cst_softc[cpu];
if (sc1 == NULL || sc1 == sc ||
(sc1->cst_flags & ACPI_CST_FLAG_ATTACHED) == 0 ||
(sc1->cst_flags & ACPI_CST_FLAG_MATCH_HT) == 0)
continue;
if (!CPUMASK_TESTBIT(mask, sc1->cst_cpuid))
continue;
if (sc1->cst_cx_count != sc->cst_cx_count) {
struct acpi_cst_softc *src_sc, *dst_sc;
if (bootverbose) {
device_printf(sc->cst_dev,
"inconstent C-state count: %d, %s has %d\n",
sc->cst_cx_count,
device_get_nameunit(sc1->cst_dev),
sc1->cst_cx_count);
}
if (sc1->cst_cx_count > sc->cst_cx_count) {
src_sc = sc1;
dst_sc = sc;
} else {
src_sc = sc;
dst_sc = sc1;
}
acpi_cst_copy(dst_sc, src_sc);
}
}
}
}
if (reprobe) {
/* If there are C3(+) states, always enable bus master wakeup */
if ((acpi_cst_quirks & ACPI_CST_QUIRK_NO_BM) == 0) {
for (i = 0; i < sc->cst_cx_count; ++i) {
struct acpi_cst_cx *cx = &sc->cst_cx_states[i];
if (cx->type >= ACPI_STATE_C3) {
AcpiWriteBitRegister(ACPI_BITREG_BUS_MASTER_RLD, 1);
break;
}
}
}
/* Fix up the lowest Cx being used */
acpi_cst_set_lowest_oncpu(sc, sc->cst_cx_lowest_req);
}
/*
* Cache the lowest non-C3 state.
* NOTE: must after cst_cx_lowest is set.
*/
acpi_cst_non_c3(sc);
cpu_sfence();
sc->cst_flags &= ~ACPI_CST_FLAG_PROBING;
return (0);
}
