projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 1da177e4 LT |
2 | #ifndef _ASM_IA64_FPSWA_H |
| 3 | #define _ASM_IA64_FPSWA_H | |
| 4 | ||
| 5 | /* | |
| 6 | * Floating-point Software Assist | |
| 7 | * | |
| 8 | * Copyright (C) 1999 Intel Corporation. | |
| 9 | * Copyright (C) 1999 Asit Mallick <asit.k.mallick@intel.com> | |
| 10 | * Copyright (C) 1999 Goutham Rao <goutham.rao@intel.com> | |
| 11 | */ | |
| 12 | ||
| 13 | typedef struct { | |
| 14 | /* 4 * 128 bits */ | |
| 15 | unsigned long fp_lp[4*2]; | |
| 16 | } fp_state_low_preserved_t; | |
| 17 | ||
| 18 | typedef struct { | |
| 19 | /* 10 * 128 bits */ | |
| 20 | unsigned long fp_lv[10 * 2]; | |
| 21 | } fp_state_low_volatile_t; | |
| 22 | ||
| 23 | typedef struct { | |
| 24 | /* 16 * 128 bits */ | |
| 25 | unsigned long fp_hp[16 * 2]; | |
| 26 | } fp_state_high_preserved_t; | |
| 27 | ||
| 28 | typedef struct { | |
| 29 | /* 96 * 128 bits */ | |
| 30 | unsigned long fp_hv[96 * 2]; | |
| 31 | } fp_state_high_volatile_t; | |
| 32 | ||
| 33 | /** | |
| 34 | * floating point state to be passed to the FP emulation library by | |
| 35 | * the trap/fault handler | |
| 36 | */ | |
| 37 | typedef struct { | |
| 38 | unsigned long bitmask_low64; | |
| 39 | unsigned long bitmask_high64; | |
| 40 | fp_state_low_preserved_t *fp_state_low_preserved; | |
| 41 | fp_state_low_volatile_t *fp_state_low_volatile; | |
| 42 | fp_state_high_preserved_t *fp_state_high_preserved; | |
| 43 | fp_state_high_volatile_t *fp_state_high_volatile; | |
| 44 | } fp_state_t; | |
| 45 | ||
| 46 | typedef struct { | |
| 47 | unsigned long status; | |
| 48 | unsigned long err0; | |
| 49 | unsigned long err1; | |
| 50 | unsigned long err2; | |
| 51 | } fpswa_ret_t; | |
| 52 | ||
| 53 | /** | |
| 54 | * function header for the Floating Point software assist | |
| 55 | * library. This function is invoked by the Floating point software | |
| 56 | * assist trap/fault handler. | |
| 57 | */ | |
| 58 | typedef fpswa_ret_t (*efi_fpswa_t) (unsigned long trap_type, void *bundle, unsigned long *ipsr, | |
| 59 | unsigned long *fsr, unsigned long *isr, unsigned long *preds, | |
| 60 | unsigned long *ifs, fp_state_t *fp_state); | |
| 61 | ||
| 62 | /** | |
| 63 | * This is the FPSWA library interface as defined by EFI. We need to pass a | |
| 64 | * pointer to the interface itself on a call to the assist library | |
| 65 | */ | |
| 66 | typedef struct { | |
| 67 | unsigned int revision; | |
| 68 | unsigned int reserved; | |
| 69 | efi_fpswa_t fpswa; | |
| 70 | } fpswa_interface_t; | |
| 71 | ||
| 72 | extern fpswa_interface_t *fpswa_interface; | |
| 73 | ||
| 74 | #endif /* _ASM_IA64_FPSWA_H */ |