change otg to host mode

hc

2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/arch/x86/kernel/cpu/match.c
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@@ -16,12 +16,17 @@
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  * respective wildcard entries.
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  *
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  * A typical table entry would be to match a specific CPU
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- * { X86_VENDOR_INTEL, 6, 0x12 }
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- * or to match a specific CPU feature
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- * { X86_FEATURE_MATCH(X86_FEATURE_FOOBAR) }
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+ *
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+ * X86_MATCH_VENDOR_FAM_MODEL_FEATURE(INTEL, 6, INTEL_FAM6_BROADWELL,
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+ *				      X86_FEATURE_ANY, NULL);
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  *
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  * Fields can be wildcarded with %X86_VENDOR_ANY, %X86_FAMILY_ANY,
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- * %X86_MODEL_ANY, %X86_FEATURE_ANY or 0 (except for vendor)
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+ * %X86_MODEL_ANY, %X86_FEATURE_ANY (except for vendor)
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+ *
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+ * asm/cpu_device_id.h contains a set of useful macros which are shortcuts
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+ * for various common selections. The above can be shortened to:
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+ *
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+ * X86_MATCH_INTEL_FAM6_MODEL(BROADWELL, NULL);
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  *
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  * Arrays used to match for this should also be declared using
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  * MODULE_DEVICE_TABLE(x86cpu, ...)
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@@ -53,3 +58,34 @@
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 	return NULL;
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 }
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 EXPORT_SYMBOL(x86_match_cpu);
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+
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+static const struct x86_cpu_desc *
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+x86_match_cpu_with_stepping(const struct x86_cpu_desc *match)
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+{
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+	struct cpuinfo_x86 *c = &boot_cpu_data;
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+	const struct x86_cpu_desc *m;
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+
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+	for (m = match; m->x86_family | m->x86_model; m++) {
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+		if (c->x86_vendor != m->x86_vendor)
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+			continue;
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+		if (c->x86 != m->x86_family)
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+			continue;
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+		if (c->x86_model != m->x86_model)
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+			continue;
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+		if (c->x86_stepping != m->x86_stepping)
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+			continue;
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+		return m;
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+	}
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+	return NULL;
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+}
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+
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+bool x86_cpu_has_min_microcode_rev(const struct x86_cpu_desc *table)
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+{
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+	const struct x86_cpu_desc *res = x86_match_cpu_with_stepping(table);
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+
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+	if (!res || res->x86_microcode_rev > boot_cpu_data.microcode)
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+		return false;
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+
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+	return true;
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+}
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+EXPORT_SYMBOL_GPL(x86_cpu_has_min_microcode_rev);