1 // SPDX-License-Identifier: GPL-2.0
3  * In-kernel vector facility support functions
13 void __kernel_fpu_begin(struct kernel_fpu *state, int flags)  in __kernel_fpu_begin()  argument
15 	__vector128 *vxrs = state->vxrs;  in __kernel_fpu_begin()
16 	int mask;  in __kernel_fpu_begin()  local
22 	flags &= state->hdr.mask;  in __kernel_fpu_begin()
23 	if (flags & KERNEL_FPC)  in __kernel_fpu_begin()
24 		fpu_stfpc(&state->hdr.fpc);  in __kernel_fpu_begin()
26 		if (flags & KERNEL_VXR_LOW)  in __kernel_fpu_begin()
30 	mask = flags & KERNEL_VXR;  in __kernel_fpu_begin()
31 	if (mask == KERNEL_VXR) {  in __kernel_fpu_begin()
36 	if (mask == KERNEL_VXR_MID) {  in __kernel_fpu_begin()
40 	mask = flags & KERNEL_VXR_LOW;  in __kernel_fpu_begin()
41 	if (mask) {  in __kernel_fpu_begin()
42 		if (mask == KERNEL_VXR_LOW)  in __kernel_fpu_begin()
44 		else if (mask == KERNEL_VXR_V0V7)  in __kernel_fpu_begin()
49 	mask = flags & KERNEL_VXR_HIGH;  in __kernel_fpu_begin()
50 	if (mask) {  in __kernel_fpu_begin()
51 		if (mask == KERNEL_VXR_HIGH)  in __kernel_fpu_begin()
53 		else if (mask == KERNEL_VXR_V16V23)  in __kernel_fpu_begin()
61 void __kernel_fpu_end(struct kernel_fpu *state, int flags)  in __kernel_fpu_end()  argument
63 	__vector128 *vxrs = state->vxrs;  in __kernel_fpu_end()
64 	int mask;  in __kernel_fpu_end()  local
71 	flags &= state->hdr.mask;  in __kernel_fpu_end()
72 	if (flags & KERNEL_FPC)  in __kernel_fpu_end()
73 		fpu_lfpc(&state->hdr.fpc);  in __kernel_fpu_end()
75 		if (flags & KERNEL_VXR_LOW)  in __kernel_fpu_end()
79 	mask = flags & KERNEL_VXR;  in __kernel_fpu_end()
80 	if (mask == KERNEL_VXR) {  in __kernel_fpu_end()
85 	if (mask == KERNEL_VXR_MID) {  in __kernel_fpu_end()
89 	mask = flags & KERNEL_VXR_LOW;  in __kernel_fpu_end()
90 	if (mask) {  in __kernel_fpu_end()
91 		if (mask == KERNEL_VXR_LOW)  in __kernel_fpu_end()
93 		else if (mask == KERNEL_VXR_V0V7)  in __kernel_fpu_end()
98 	mask = flags & KERNEL_VXR_HIGH;  in __kernel_fpu_end()
99 	if (mask) {  in __kernel_fpu_end()
100 		if (mask == KERNEL_VXR_HIGH)  in __kernel_fpu_end()
102 		else if (mask == KERNEL_VXR_V16V23)  in __kernel_fpu_end()
110 void load_fpu_state(struct fpu *state, int flags)  in load_fpu_state()  argument
112 	__vector128 *vxrs = &state->vxrs[0];  in load_fpu_state()
113 	int mask;  in load_fpu_state()  local
115 	if (flags & KERNEL_FPC)  in load_fpu_state()
116 		fpu_lfpc_safe(&state->fpc);  in load_fpu_state()
118 		if (flags & KERNEL_VXR_V0V7)  in load_fpu_state()
119 			load_fp_regs_vx(state->vxrs);  in load_fpu_state()
122 	mask = flags & KERNEL_VXR;  in load_fpu_state()
123 	if (mask == KERNEL_VXR) {  in load_fpu_state()
128 	if (mask == KERNEL_VXR_MID) {  in load_fpu_state()
132 	mask = flags & KERNEL_VXR_LOW;  in load_fpu_state()
133 	if (mask) {  in load_fpu_state()
134 		if (mask == KERNEL_VXR_LOW)  in load_fpu_state()
136 		else if (mask == KERNEL_VXR_V0V7)  in load_fpu_state()
141 	mask = flags & KERNEL_VXR_HIGH;  in load_fpu_state()
142 	if (mask) {  in load_fpu_state()
143 		if (mask == KERNEL_VXR_HIGH)  in load_fpu_state()
145 		else if (mask == KERNEL_VXR_V16V23)  in load_fpu_state()
152 void save_fpu_state(struct fpu *state, int flags)  in save_fpu_state()  argument
154 	__vector128 *vxrs = &state->vxrs[0];  in save_fpu_state()
155 	int mask;  in save_fpu_state()  local
157 	if (flags & KERNEL_FPC)  in save_fpu_state()
158 		fpu_stfpc(&state->fpc);  in save_fpu_state()
160 		if (flags & KERNEL_VXR_LOW)  in save_fpu_state()
161 			save_fp_regs_vx(state->vxrs);  in save_fpu_state()
164 	mask = flags & KERNEL_VXR;  in save_fpu_state()
165 	if (mask == KERNEL_VXR) {  in save_fpu_state()
170 	if (mask == KERNEL_VXR_MID) {  in save_fpu_state()
174 	mask = flags & KERNEL_VXR_LOW;  in save_fpu_state()
175 	if (mask) {  in save_fpu_state()
176 		if (mask == KERNEL_VXR_LOW)  in save_fpu_state()
178 		else if (mask == KERNEL_VXR_V0V7)  in save_fpu_state()
183 	mask = flags & KERNEL_VXR_HIGH;  in save_fpu_state()
184 	if (mask) {  in save_fpu_state()
185 		if (mask == KERNEL_VXR_HIGH)  in save_fpu_state()
187 		else if (mask == KERNEL_VXR_V16V23)  in save_fpu_state()