diff options
Diffstat (limited to 'arch/ia64/kernel/esi.c')
| -rw-r--r-- | arch/ia64/kernel/esi.c | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/arch/ia64/kernel/esi.c b/arch/ia64/kernel/esi.c deleted file mode 100644 index cb514126ef7f..000000000000 --- a/arch/ia64/kernel/esi.c +++ /dev/null @@ -1,206 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Extensible SAL Interface (ESI) support routines. - * - * Copyright (C) 2006 Hewlett-Packard Co - * Alex Williamson <alex.williamson@hp.com> - */ -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/module.h> -#include <linux/string.h> - -#include <asm/esi.h> -#include <asm/sal.h> - -MODULE_AUTHOR("Alex Williamson <alex.williamson@hp.com>"); -MODULE_DESCRIPTION("Extensible SAL Interface (ESI) support"); -MODULE_LICENSE("GPL"); - -#define MODULE_NAME "esi" - -#define ESI_TABLE_GUID \ - EFI_GUID(0x43EA58DC, 0xCF28, 0x4b06, 0xB3, \ - 0x91, 0xB7, 0x50, 0x59, 0x34, 0x2B, 0xD4) - -enum esi_systab_entry_type { - ESI_DESC_ENTRY_POINT = 0 -}; - -/* - * Entry type: Size: - * 0 48 - */ -#define ESI_DESC_SIZE(type) "\060"[(unsigned) (type)] - -typedef struct ia64_esi_desc_entry_point { - u8 type; - u8 reserved1[15]; - u64 esi_proc; - u64 gp; - efi_guid_t guid; -} ia64_esi_desc_entry_point_t; - -struct pdesc { - void *addr; - void *gp; -}; - -static struct ia64_sal_systab *esi_systab; - -static int __init esi_init (void) -{ - efi_config_table_t *config_tables; - struct ia64_sal_systab *systab; - unsigned long esi = 0; - char *p; - int i; - - config_tables = __va(efi.systab->tables); - - for (i = 0; i < (int) efi.systab->nr_tables; ++i) { - if (efi_guidcmp(config_tables[i].guid, ESI_TABLE_GUID) == 0) { - esi = config_tables[i].table; - break; - } - } - - if (!esi) - return -ENODEV; - - systab = __va(esi); - - if (strncmp(systab->signature, "ESIT", 4) != 0) { - printk(KERN_ERR "bad signature in ESI system table!"); - return -ENODEV; - } - - p = (char *) (systab + 1); - for (i = 0; i < systab->entry_count; i++) { - /* - * The first byte of each entry type contains the type - * descriptor. - */ - switch (*p) { - case ESI_DESC_ENTRY_POINT: - break; - default: - printk(KERN_WARNING "Unknown table type %d found in " - "ESI table, ignoring rest of table\n", *p); - return -ENODEV; - } - - p += ESI_DESC_SIZE(*p); - } - - esi_systab = systab; - return 0; -} - - -int ia64_esi_call (efi_guid_t guid, struct ia64_sal_retval *isrvp, - enum esi_proc_type proc_type, u64 func, - u64 arg1, u64 arg2, u64 arg3, u64 arg4, u64 arg5, u64 arg6, - u64 arg7) -{ - struct ia64_fpreg fr[6]; - unsigned long flags = 0; - int i; - char *p; - - if (!esi_systab) - return -1; - - p = (char *) (esi_systab + 1); - for (i = 0; i < esi_systab->entry_count; i++) { - if (*p == ESI_DESC_ENTRY_POINT) { - ia64_esi_desc_entry_point_t *esi = (void *)p; - if (!efi_guidcmp(guid, esi->guid)) { - ia64_sal_handler esi_proc; - struct pdesc pdesc; - - pdesc.addr = __va(esi->esi_proc); - pdesc.gp = __va(esi->gp); - - esi_proc = (ia64_sal_handler) &pdesc; - - ia64_save_scratch_fpregs(fr); - if (proc_type == ESI_PROC_SERIALIZED) - spin_lock_irqsave(&sal_lock, flags); - else if (proc_type == ESI_PROC_MP_SAFE) - local_irq_save(flags); - else - preempt_disable(); - *isrvp = (*esi_proc)(func, arg1, arg2, arg3, - arg4, arg5, arg6, arg7); - if (proc_type == ESI_PROC_SERIALIZED) - spin_unlock_irqrestore(&sal_lock, - flags); - else if (proc_type == ESI_PROC_MP_SAFE) - local_irq_restore(flags); - else - preempt_enable(); - ia64_load_scratch_fpregs(fr); - return 0; - } - } - p += ESI_DESC_SIZE(*p); - } - return -1; -} -EXPORT_SYMBOL_GPL(ia64_esi_call); - -int ia64_esi_call_phys (efi_guid_t guid, struct ia64_sal_retval *isrvp, - u64 func, u64 arg1, u64 arg2, u64 arg3, u64 arg4, - u64 arg5, u64 arg6, u64 arg7) -{ - struct ia64_fpreg fr[6]; - unsigned long flags; - u64 esi_params[8]; - char *p; - int i; - - if (!esi_systab) - return -1; - - p = (char *) (esi_systab + 1); - for (i = 0; i < esi_systab->entry_count; i++) { - if (*p == ESI_DESC_ENTRY_POINT) { - ia64_esi_desc_entry_point_t *esi = (void *)p; - if (!efi_guidcmp(guid, esi->guid)) { - ia64_sal_handler esi_proc; - struct pdesc pdesc; - - pdesc.addr = (void *)esi->esi_proc; - pdesc.gp = (void *)esi->gp; - - esi_proc = (ia64_sal_handler) &pdesc; - - esi_params[0] = func; - esi_params[1] = arg1; - esi_params[2] = arg2; - esi_params[3] = arg3; - esi_params[4] = arg4; - esi_params[5] = arg5; - esi_params[6] = arg6; - esi_params[7] = arg7; - ia64_save_scratch_fpregs(fr); - spin_lock_irqsave(&sal_lock, flags); - *isrvp = esi_call_phys(esi_proc, esi_params); - spin_unlock_irqrestore(&sal_lock, flags); - ia64_load_scratch_fpregs(fr); - return 0; - } - } - p += ESI_DESC_SIZE(*p); - } - return -1; -} -EXPORT_SYMBOL_GPL(ia64_esi_call_phys); - -static void __exit esi_exit (void) -{ -} - -module_init(esi_init); -module_exit(esi_exit); /* makes module removable... */ |