summaryrefslogtreecommitdiffstats
path: root/drivers/acpi/tables.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 17:35:05 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 17:39:31 +0000
commit85c675d0d09a45a135bddd15d7b385f8758c32fb (patch)
tree76267dbc9b9a130337be3640948fe397b04ac629 /drivers/acpi/tables.c
parentAdding upstream version 6.6.15. (diff)
downloadlinux-85c675d0d09a45a135bddd15d7b385f8758c32fb.tar.xz
linux-85c675d0d09a45a135bddd15d7b385f8758c32fb.zip
Adding upstream version 6.7.7.upstream/6.7.7
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/acpi/tables.c')
-rw-r--r--drivers/acpi/tables.c173
1 files changed, 0 insertions, 173 deletions
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index 8ab0a82b4d..c1516337f6 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -37,18 +37,6 @@ static struct acpi_table_desc initial_tables[ACPI_MAX_TABLES] __initdata;
static int acpi_apic_instance __initdata_or_acpilib;
-enum acpi_subtable_type {
- ACPI_SUBTABLE_COMMON,
- ACPI_SUBTABLE_HMAT,
- ACPI_SUBTABLE_PRMT,
- ACPI_SUBTABLE_CEDT,
-};
-
-struct acpi_subtable_entry {
- union acpi_subtable_headers *hdr;
- enum acpi_subtable_type type;
-};
-
/*
* Disable table checksum verification for the early stage due to the size
* limitation of the current x86 early mapping implementation.
@@ -237,167 +225,6 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header)
}
}
-static unsigned long __init_or_acpilib
-acpi_get_entry_type(struct acpi_subtable_entry *entry)
-{
- switch (entry->type) {
- case ACPI_SUBTABLE_COMMON:
- return entry->hdr->common.type;
- case ACPI_SUBTABLE_HMAT:
- return entry->hdr->hmat.type;
- case ACPI_SUBTABLE_PRMT:
- return 0;
- case ACPI_SUBTABLE_CEDT:
- return entry->hdr->cedt.type;
- }
- return 0;
-}
-
-static unsigned long __init_or_acpilib
-acpi_get_entry_length(struct acpi_subtable_entry *entry)
-{
- switch (entry->type) {
- case ACPI_SUBTABLE_COMMON:
- return entry->hdr->common.length;
- case ACPI_SUBTABLE_HMAT:
- return entry->hdr->hmat.length;
- case ACPI_SUBTABLE_PRMT:
- return entry->hdr->prmt.length;
- case ACPI_SUBTABLE_CEDT:
- return entry->hdr->cedt.length;
- }
- return 0;
-}
-
-static unsigned long __init_or_acpilib
-acpi_get_subtable_header_length(struct acpi_subtable_entry *entry)
-{
- switch (entry->type) {
- case ACPI_SUBTABLE_COMMON:
- return sizeof(entry->hdr->common);
- case ACPI_SUBTABLE_HMAT:
- return sizeof(entry->hdr->hmat);
- case ACPI_SUBTABLE_PRMT:
- return sizeof(entry->hdr->prmt);
- case ACPI_SUBTABLE_CEDT:
- return sizeof(entry->hdr->cedt);
- }
- return 0;
-}
-
-static enum acpi_subtable_type __init_or_acpilib
-acpi_get_subtable_type(char *id)
-{
- if (strncmp(id, ACPI_SIG_HMAT, 4) == 0)
- return ACPI_SUBTABLE_HMAT;
- if (strncmp(id, ACPI_SIG_PRMT, 4) == 0)
- return ACPI_SUBTABLE_PRMT;
- if (strncmp(id, ACPI_SIG_CEDT, 4) == 0)
- return ACPI_SUBTABLE_CEDT;
- return ACPI_SUBTABLE_COMMON;
-}
-
-static __init_or_acpilib bool has_handler(struct acpi_subtable_proc *proc)
-{
- return proc->handler || proc->handler_arg;
-}
-
-static __init_or_acpilib int call_handler(struct acpi_subtable_proc *proc,
- union acpi_subtable_headers *hdr,
- unsigned long end)
-{
- if (proc->handler)
- return proc->handler(hdr, end);
- if (proc->handler_arg)
- return proc->handler_arg(hdr, proc->arg, end);
- return -EINVAL;
-}
-
-/**
- * acpi_parse_entries_array - for each proc_num find a suitable subtable
- *
- * @id: table id (for debugging purposes)
- * @table_size: size of the root table
- * @table_header: where does the table start?
- * @proc: array of acpi_subtable_proc struct containing entry id
- * and associated handler with it
- * @proc_num: how big proc is?
- * @max_entries: how many entries can we process?
- *
- * For each proc_num find a subtable with proc->id and run proc->handler
- * on it. Assumption is that there's only single handler for particular
- * entry id.
- *
- * The table_size is not the size of the complete ACPI table (the length
- * field in the header struct), but only the size of the root table; i.e.,
- * the offset from the very first byte of the complete ACPI table, to the
- * first byte of the very first subtable.
- *
- * On success returns sum of all matching entries for all proc handlers.
- * Otherwise, -ENODEV or -EINVAL is returned.
- */
-static int __init_or_acpilib acpi_parse_entries_array(
- char *id, unsigned long table_size,
- struct acpi_table_header *table_header, struct acpi_subtable_proc *proc,
- int proc_num, unsigned int max_entries)
-{
- struct acpi_subtable_entry entry;
- unsigned long table_end, subtable_len, entry_len;
- int count = 0;
- int errs = 0;
- int i;
-
- table_end = (unsigned long)table_header + table_header->length;
-
- /* Parse all entries looking for a match. */
-
- entry.type = acpi_get_subtable_type(id);
- entry.hdr = (union acpi_subtable_headers *)
- ((unsigned long)table_header + table_size);
- subtable_len = acpi_get_subtable_header_length(&entry);
-
- while (((unsigned long)entry.hdr) + subtable_len < table_end) {
- if (max_entries && count >= max_entries)
- break;
-
- for (i = 0; i < proc_num; i++) {
- if (acpi_get_entry_type(&entry) != proc[i].id)
- continue;
- if (!has_handler(&proc[i]) ||
- (!errs &&
- call_handler(&proc[i], entry.hdr, table_end))) {
- errs++;
- continue;
- }
-
- proc[i].count++;
- break;
- }
- if (i != proc_num)
- count++;
-
- /*
- * If entry->length is 0, break from this loop to avoid
- * infinite loop.
- */
- entry_len = acpi_get_entry_length(&entry);
- if (entry_len == 0) {
- pr_err("[%4.4s:0x%02x] Invalid zero length\n", id, proc->id);
- return -EINVAL;
- }
-
- entry.hdr = (union acpi_subtable_headers *)
- ((unsigned long)entry.hdr + entry_len);
- }
-
- if (max_entries && count > max_entries) {
- pr_warn("[%4.4s:0x%02x] found the maximum %i entries\n",
- id, proc->id, count);
- }
-
- return errs ? -EINVAL : count;
-}
-
int __init_or_acpilib acpi_table_parse_entries_array(
char *id, unsigned long table_size, struct acpi_subtable_proc *proc,
int proc_num, unsigned int max_entries)