rtl88x2CE_WiFi_linux driver

hc

2024-05-10 cde9070d9970eef1f7ec2360586c802a16230ad8

 kernel/arch/arm64/kernel/entry-fpsimd.S
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@@ -1,20 +1,9 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * FP/SIMD state saving and restoring
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  *
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  * Copyright (C) 2012 ARM Ltd.
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  * Author: Catalin Marinas <catalin.marinas@arm.com>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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  */
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 #include <linux/linkage.h>
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@@ -27,34 +16,59 @@
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  *
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  * x0 - pointer to struct fpsimd_state
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  */
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-ENTRY(fpsimd_save_state)
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+SYM_FUNC_START(fpsimd_save_state)
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 	fpsimd_save x0, 8
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 	ret
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-ENDPROC(fpsimd_save_state)
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+SYM_FUNC_END(fpsimd_save_state)
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 /*
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  * Load the FP registers.
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  *
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  * x0 - pointer to struct fpsimd_state
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  */
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-ENTRY(fpsimd_load_state)
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+SYM_FUNC_START(fpsimd_load_state)
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 	fpsimd_restore x0, 8
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 	ret
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-ENDPROC(fpsimd_load_state)
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+SYM_FUNC_END(fpsimd_load_state)
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 #ifdef CONFIG_ARM64_SVE
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-ENTRY(sve_save_state)
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+
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+SYM_FUNC_START(sve_save_state)
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 	sve_save 0, x1, 2
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 	ret
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-ENDPROC(sve_save_state)
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+SYM_FUNC_END(sve_save_state)
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-ENTRY(sve_load_state)
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+SYM_FUNC_START(sve_load_state)
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 	sve_load 0, x1, x2, 3, x4
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 	ret
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-ENDPROC(sve_load_state)
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+SYM_FUNC_END(sve_load_state)
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-ENTRY(sve_get_vl)
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+SYM_FUNC_START(sve_get_vl)
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 	_sve_rdvl	0, 1
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 	ret
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-ENDPROC(sve_get_vl)
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+SYM_FUNC_END(sve_get_vl)
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+
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+/*
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+ * Load SVE state from FPSIMD state.
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+ *
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+ * x0 = pointer to struct fpsimd_state
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+ * x1 = VQ - 1
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+ *
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+ * Each SVE vector will be loaded with the first 128-bits taken from FPSIMD
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+ * and the rest zeroed. All the other SVE registers will be zeroed.
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+ */
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+SYM_FUNC_START(sve_load_from_fpsimd_state)
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+		sve_load_vq	x1, x2, x3
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+		fpsimd_restore	x0, 8
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+ _for n, 0, 15, _sve_pfalse	\n
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+		_sve_wrffr	0
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+		ret
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+SYM_FUNC_END(sve_load_from_fpsimd_state)
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+
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+/* Zero all SVE registers but the first 128-bits of each vector */
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+SYM_FUNC_START(sve_flush_live)
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+	sve_flush
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+	ret
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+SYM_FUNC_END(sve_flush_live)
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+
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 #endif /* CONFIG_ARM64_SVE */