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Code Issues Releases Activity

Add acpi_GetTableIntoBuffer, to aid in fetching tables.

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This commit is contained in:
Mike Smith 2001-07-07 10:20:17 +00:00
parent db302f9945
commit 7d3bcec9fb
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=79387
2 changed files with 25 additions and 3 deletions
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27
sys/dev/acpica/acpi.c
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@ -574,14 +574,14 @@ acpi_release_resource(device_t bus, device_t child, int type, int rid, struct re
/*
* Scan relevant portions of the ACPI namespace and attach child devices.
*
* Note that we only expect to find devices in the \_TZ_, \_SI_ and \_SB_ scopes,
* and \_TZ_ becomes obsolete in the ACPI 2.0 spec.
* Note that we only expect to find devices in the \_PR_, \_TZ_, \_SI_ and \_SB_ scopes,
* and \_PR_ and \_TZ_ become obsolete in the ACPI 2.0 spec.
*/
static void
acpi_probe_children(device_t bus)
{
ACPI_HANDLE parent;
static char *scopes[] = {"\\_TZ_", "\\_SI", "\\_SB_", NULL};
static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI", "\\_SB_", NULL};
int i;
FUNCTION_TRACE(__func__);
@ -839,6 +839,27 @@ acpi_GetIntoBuffer(ACPI_HANDLE handle, ACPI_STATUS (*func)(ACPI_HANDLE, ACPI_BUF
return(func(handle, buf));
}
/*
* Perform the tedious double-get procedure required for fetching a table into
* an ACPI_BUFFER that has not been initialised.
*/
ACPI_STATUS
acpi_GetTableIntoBuffer(ACPI_TABLE_TYPE table, UINT32 instance, ACPI_BUFFER *buf)
{
ACPI_STATUS status;
ACPI_ASSERTLOCK;
buf->Length = 0;
buf->Pointer = NULL;
if ((status = AcpiGetTable(table, instance, buf)) != AE_BUFFER_OVERFLOW)
return(status);
if ((buf->Pointer = AcpiOsCallocate(buf->Length)) == NULL)
return(AE_NO_MEMORY);
return(AcpiGetTable(table, instance, buf));
}
/*
* Perform the tedious double-evaluate procedure for evaluating something into
* an ACPI_BUFFER that has not been initialised. Note that this evaluates

1
sys/dev/acpica/acpivar.h
View File

@ -191,6 +191,7 @@ extern ACPI_BUFFER *acpi_AllocBuffer(int size);
extern ACPI_STATUS acpi_GetIntoBuffer(ACPI_HANDLE handle,
ACPI_STATUS (*func)(ACPI_HANDLE, ACPI_BUFFER *),
ACPI_BUFFER *buf);
extern ACPI_STATUS acpi_GetTableIntoBuffer(ACPI_TABLE_TYPE table, UINT32 instance, ACPI_BUFFER *buf);
extern ACPI_STATUS acpi_EvaluateIntoBuffer(ACPI_HANDLE object, ACPI_STRING pathname,
ACPI_OBJECT_LIST *params, ACPI_BUFFER *buf);
extern ACPI_STATUS acpi_EvaluateInteger(ACPI_HANDLE handle, char *path, int *number);