acpi: add interface to access user-installed tables
Also add a new API to install builtin tables, so that we can distinguish between the two. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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@ -309,6 +309,46 @@ out:
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error_propagate(errp, err);
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error_propagate(errp, err);
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}
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}
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static bool acpi_table_builtin = false;
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void acpi_table_add_builtin(const QemuOpts *opts, Error **errp)
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{
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acpi_table_builtin = true;
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acpi_table_add(opts, errp);
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}
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unsigned acpi_table_len(void *current)
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{
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struct acpi_table_header *hdr = current - sizeof(hdr->_length);
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return hdr->_length;
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}
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static
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void *acpi_table_hdr(void *h)
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{
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struct acpi_table_header *hdr = h;
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return &hdr->sig;
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}
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uint8_t *acpi_table_first(void)
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{
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if (acpi_table_builtin || !acpi_tables) {
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return NULL;
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}
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return acpi_table_hdr(acpi_tables + ACPI_TABLE_PFX_SIZE);
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}
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uint8_t *acpi_table_next(uint8_t *current)
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{
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uint8_t *next = current + acpi_table_len(current);
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if (next - acpi_tables >= acpi_tables_len) {
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return NULL;
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} else {
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return acpi_table_hdr(next);
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}
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}
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static void acpi_notify_wakeup(Notifier *notifier, void *data)
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static void acpi_notify_wakeup(Notifier *notifier, void *data)
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{
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{
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ACPIREGS *ar = container_of(notifier, ACPIREGS, wakeup);
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ACPIREGS *ar = container_of(notifier, ACPIREGS, wakeup);
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@ -165,6 +165,10 @@ extern int acpi_enabled;
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extern char unsigned *acpi_tables;
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extern char unsigned *acpi_tables;
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extern size_t acpi_tables_len;
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extern size_t acpi_tables_len;
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uint8_t *acpi_table_first(void);
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uint8_t *acpi_table_next(uint8_t *current);
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unsigned acpi_table_len(void *current);
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void acpi_table_add(const QemuOpts *opts, Error **errp);
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void acpi_table_add(const QemuOpts *opts, Error **errp);
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void acpi_table_add_builtin(const QemuOpts *opts, Error **errp);
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#endif /* !QEMU_HW_ACPI_H */
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#endif /* !QEMU_HW_ACPI_H */
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