From 9370bb92b2d16684ee45cf24e879c93c509162da Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Thu, 19 Dec 2024 01:47:39 +0000
Subject: [PATCH] add wifi6 8852be driver
---
kernel/arch/x86/kernel/fpu/regset.c | 77 ++++++++++----------------------------
1 files changed, 20 insertions(+), 57 deletions(-)
diff --git a/kernel/arch/x86/kernel/fpu/regset.c b/kernel/arch/x86/kernel/fpu/regset.c
index 621d249..6bb8744 100644
--- a/kernel/arch/x86/kernel/fpu/regset.c
+++ b/kernel/arch/x86/kernel/fpu/regset.c
@@ -15,24 +15,19 @@
*/
int regset_fpregs_active(struct task_struct *target, const struct user_regset *regset)
{
- struct fpu *target_fpu = &target->thread.fpu;
-
- return target_fpu->initialized ? regset->n : 0;
+ return regset->n;
}
int regset_xregset_fpregs_active(struct task_struct *target, const struct user_regset *regset)
{
- struct fpu *target_fpu = &target->thread.fpu;
-
- if (boot_cpu_has(X86_FEATURE_FXSR) && target_fpu->initialized)
+ if (boot_cpu_has(X86_FEATURE_FXSR))
return regset->n;
else
return 0;
}
int xfpregs_get(struct task_struct *target, const struct user_regset *regset,
- unsigned int pos, unsigned int count,
- void *kbuf, void __user *ubuf)
+ struct membuf to)
{
struct fpu *fpu = &target->thread.fpu;
@@ -42,8 +37,7 @@
fpu__prepare_read(fpu);
fpstate_sanitize_xstate(fpu);
- return user_regset_copyout(&pos, &count, &kbuf, &ubuf,
- &fpu->state.fxsave, 0, -1);
+ return membuf_write(&to, &fpu->state.fxsave, sizeof(struct fxregs_state));
}
int xfpregs_set(struct task_struct *target, const struct user_regset *regset,
@@ -78,12 +72,10 @@
}
int xstateregs_get(struct task_struct *target, const struct user_regset *regset,
- unsigned int pos, unsigned int count,
- void *kbuf, void __user *ubuf)
+ struct membuf to)
{
struct fpu *fpu = &target->thread.fpu;
struct xregs_state *xsave;
- int ret;
if (!boot_cpu_has(X86_FEATURE_XSAVE))
return -ENODEV;
@@ -93,10 +85,8 @@
fpu__prepare_read(fpu);
if (using_compacted_format()) {
- if (kbuf)
- ret = copy_xstate_to_kernel(kbuf, xsave, pos, count);
- else
- ret = copy_xstate_to_user(ubuf, xsave, pos, count);
+ copy_xstate_to_kernel(to, xsave);
+ return 0;
} else {
fpstate_sanitize_xstate(fpu);
/*
@@ -109,9 +99,8 @@
/*
* Copy the xstate memory layout.
*/
- ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, xsave, 0, -1);
+ return membuf_write(&to, xsave, fpu_user_xstate_size);
}
- return ret;
}
int xstateregs_set(struct task_struct *target, const struct user_regset *regset,
@@ -143,7 +132,7 @@
} else {
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, xsave, 0, -1);
if (!ret)
- ret = validate_xstate_header(&xsave->header);
+ ret = validate_user_xstate_header(&xsave->header);
}
/*
@@ -269,11 +258,10 @@
memcpy(&to[i], &from[i], sizeof(to[0]));
}
-void convert_to_fxsr(struct task_struct *tsk,
+void convert_to_fxsr(struct fxregs_state *fxsave,
const struct user_i387_ia32_struct *env)
{
- struct fxregs_state *fxsave = &tsk->thread.fpu.state.fxsave;
struct _fpreg *from = (struct _fpreg *) &env->st_space[0];
struct _fpxreg *to = (struct _fpxreg *) &fxsave->st_space[0];
int i;
@@ -298,8 +286,7 @@
}
int fpregs_get(struct task_struct *target, const struct user_regset *regset,
- unsigned int pos, unsigned int count,
- void *kbuf, void __user *ubuf)
+ struct membuf to)
{
struct fpu *fpu = &target->thread.fpu;
struct user_i387_ia32_struct env;
@@ -307,23 +294,22 @@
fpu__prepare_read(fpu);
if (!boot_cpu_has(X86_FEATURE_FPU))
- return fpregs_soft_get(target, regset, pos, count, kbuf, ubuf);
+ return fpregs_soft_get(target, regset, to);
- if (!boot_cpu_has(X86_FEATURE_FXSR))
- return user_regset_copyout(&pos, &count, &kbuf, &ubuf,
- &fpu->state.fsave, 0,
- -1);
+ if (!boot_cpu_has(X86_FEATURE_FXSR)) {
+ return membuf_write(&to, &fpu->state.fsave,
+ sizeof(struct fregs_state));
+ }
fpstate_sanitize_xstate(fpu);
- if (kbuf && pos == 0 && count == sizeof(env)) {
- convert_from_fxsr(kbuf, target);
+ if (to.left == sizeof(env)) {
+ convert_from_fxsr(to.p, target);
return 0;
}
convert_from_fxsr(&env, target);
-
- return user_regset_copyout(&pos, &count, &kbuf, &ubuf, &env, 0, -1);
+ return membuf_write(&to, &env, sizeof(env));
}
int fpregs_set(struct task_struct *target, const struct user_regset *regset,
@@ -350,7 +336,7 @@
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &env, 0, -1);
if (!ret)
- convert_to_fxsr(target, &env);
+ convert_to_fxsr(&target->thread.fpu.state.fxsave, &env);
/*
* update the header bit in the xsave header, indicating the
@@ -360,28 +346,5 @@
fpu->state.xsave.header.xfeatures |= XFEATURE_MASK_FP;
return ret;
}
-
-/*
- * FPU state for core dumps.
- * This is only used for a.out dumps now.
- * It is declared generically using elf_fpregset_t (which is
- * struct user_i387_struct) but is in fact only used for 32-bit
- * dumps, so on 64-bit it is really struct user_i387_ia32_struct.
- */
-int dump_fpu(struct pt_regs *regs, struct user_i387_struct *ufpu)
-{
- struct task_struct *tsk = current;
- struct fpu *fpu = &tsk->thread.fpu;
- int fpvalid;
-
- fpvalid = fpu->initialized;
- if (fpvalid)
- fpvalid = !fpregs_get(tsk, NULL,
- 0, sizeof(struct user_i387_ia32_struct),
- ufpu, NULL);
-
- return fpvalid;
-}
-EXPORT_SYMBOL(dump_fpu);
#endif /* CONFIG_X86_32 || CONFIG_IA32_EMULATION */
--
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