From 60de1163d5b5013fe964ac0792e9a64a823e73a3 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Mon, 7 Oct 2013 14:41:40 +0300 Subject: 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 --- hw/acpi/core.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) (limited to 'hw/acpi') diff --git a/hw/acpi/core.c b/hw/acpi/core.c index 7467b88e27..4d25d8eff0 100644 --- a/hw/acpi/core.c +++ b/hw/acpi/core.c @@ -309,6 +309,46 @@ out: error_propagate(errp, err); } +static bool acpi_table_builtin = false; + +void acpi_table_add_builtin(const QemuOpts *opts, Error **errp) +{ + acpi_table_builtin = true; + acpi_table_add(opts, errp); +} + +unsigned acpi_table_len(void *current) +{ + struct acpi_table_header *hdr = current - sizeof(hdr->_length); + return hdr->_length; +} + +static +void *acpi_table_hdr(void *h) +{ + struct acpi_table_header *hdr = h; + return &hdr->sig; +} + +uint8_t *acpi_table_first(void) +{ + if (acpi_table_builtin || !acpi_tables) { + return NULL; + } + return acpi_table_hdr(acpi_tables + ACPI_TABLE_PFX_SIZE); +} + +uint8_t *acpi_table_next(uint8_t *current) +{ + uint8_t *next = current + acpi_table_len(current); + + if (next - acpi_tables >= acpi_tables_len) { + return NULL; + } else { + return acpi_table_hdr(next); + } +} + static void acpi_notify_wakeup(Notifier *notifier, void *data) { ACPIREGS *ar = container_of(notifier, ACPIREGS, wakeup); -- cgit v1.2.1