drivers/wifi/generic: Move SMBIOS functions to a separate file

This change reorganizes the WiFi generic driver to move the SMBIOS
functions to a separate file. This change is done to reduce the noise
in generic.c file and improve readability of the file.

Change-Id: I38ed46f5ae1594945d2078b00e8315d9234f36d7
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46859
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>

1 files changed, 42 insertions, 0 deletions

diff --git a/src/drivers/wifi/generic/smbios.c b/src/drivers/wifi/generic/smbios.c
new file mode 100644
index 0000000000..0c1b976f00
--- /dev/null
+++ b/src/drivers/wifi/generic/smbios.c
@@ -0,0 +1,42 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <device/device.h>
+#include <device/pci_ids.h>
+#include <smbios.h>
+#include <string.h>
+
+#include "wifi_private.h"
+
+static int smbios_write_intel_wifi(struct device *dev, int *handle, unsigned long *current)
+{
+	struct smbios_type_intel_wifi {
+		u8 type;
+		u8 length;
+		u16 handle;
+		u8 str;
+		u8 eos[2];
+	} __packed;
+
+	struct smbios_type_intel_wifi *t = (struct smbios_type_intel_wifi *)*current;
+	int len = sizeof(struct smbios_type_intel_wifi);
+
+	memset(t, 0, sizeof(struct smbios_type_intel_wifi));
+	t->type = 0x85;
+	t->length = len - 2;
+	t->handle = *handle;
+	/* Intel wifi driver expects this string to be in the table 0x85. */
+	t->str = smbios_add_string(t->eos, "KHOIHGIUCCHHII");
+
+	len = t->length + smbios_string_table_len(t->eos);
+	*current += len;
+	*handle += 1;
+	return len;
+}
+
+int smbios_write_wifi(struct device *dev, int *handle, unsigned long *current)
+{
+	if (dev->vendor == PCI_VENDOR_ID_INTEL)
+		return smbios_write_intel_wifi(dev, handle, current);
+
+	return 0;
+}