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- /*
- * Copyright (C) 2017 Michael Brown <mbrown@fensystems.co.uk>.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- * You can also choose to distribute this program under the terms of
- * the Unmodified Binary Distribution Licence (as given in the file
- * COPYING.UBDL), provided that you have satisfied its requirements.
- */
-
- FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
-
- /** @file
- *
- * Dummy SAN device
- *
- */
-
- #include <errno.h>
- #include <ipxe/sanboot.h>
-
- /**
- * Hook dummy SAN device
- *
- * @v drive Drive number
- * @v uris List of URIs
- * @v count Number of URIs
- * @v flags Flags
- * @ret drive Drive number, or negative error
- */
- static int dummy_san_hook ( unsigned int drive, struct uri **uris,
- unsigned int count, unsigned int flags ) {
- struct san_device *sandev;
- int rc;
-
- /* Allocate SAN device */
- sandev = alloc_sandev ( uris, count, 0 );
- if ( ! sandev ) {
- rc = -ENOMEM;
- goto err_alloc;
- }
-
- /* Register SAN device */
- if ( ( rc = register_sandev ( sandev, drive, flags ) ) != 0 ) {
- DBGC ( sandev, "SAN %#02x could not register: %s\n",
- sandev->drive, strerror ( rc ) );
- goto err_register;
- }
-
- return drive;
-
- unregister_sandev ( sandev );
- err_register:
- sandev_put ( sandev );
- err_alloc:
- return rc;
- }
-
- /**
- * Unhook dummy SAN device
- *
- * @v drive Drive number
- */
- static void dummy_san_unhook ( unsigned int drive ) {
- struct san_device *sandev;
-
- /* Find drive */
- sandev = sandev_find ( drive );
- if ( ! sandev ) {
- DBG ( "SAN %#02x does not exist\n", drive );
- return;
- }
-
- /* Unregister SAN device */
- unregister_sandev ( sandev );
-
- /* Drop reference to drive */
- sandev_put ( sandev );
- }
-
- /**
- * Boot from dummy SAN device
- *
- * @v drive Drive number
- * @v filename Filename (or NULL to use default)
- * @ret rc Return status code
- */
- static int dummy_san_boot ( unsigned int drive __unused,
- const char *filename __unused ) {
-
- return -EOPNOTSUPP;
- }
-
- /**
- * Install ACPI table
- *
- * @v acpi ACPI description header
- * @ret rc Return status code
- */
- static int dummy_install ( struct acpi_header *acpi ) {
-
- DBGC ( acpi, "ACPI table %s:\n", acpi_name ( acpi->signature ) );
- DBGC_HDA ( acpi, 0, acpi, le32_to_cpu ( acpi->length ) );
- return 0;
- }
-
- /**
- * Describe dummy SAN device
- *
- * @ret rc Return status code
- */
- static int dummy_san_describe ( void ) {
-
- return acpi_install ( dummy_install );
- }
-
- PROVIDE_SANBOOT ( dummy, san_hook, dummy_san_hook );
- PROVIDE_SANBOOT ( dummy, san_unhook, dummy_san_unhook );
- PROVIDE_SANBOOT ( dummy, san_boot, dummy_san_boot );
- PROVIDE_SANBOOT ( dummy, san_describe, dummy_san_describe );
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