recipes-wifi/linux-mt76/files/patches-3.x/0003-wifi-mt76-connac-add-support-for-dsp-firmware-downlo.patch

From 20c8d7bfeb91be51129e7e98213db441a62d6d95 Mon Sep 17 00:00:00 2001
From: Peter Chiu <chui-hao.chiu@mediatek.com>
Date: Wed, 31 May 2023 18:31:41 +0800
Subject: [PATCH 03/11] wifi: mt76: connac: add support for dsp firmware
 download

Add FW_START_WORKING_PDA_DSP for the indication of starting DSP
firmware download, which is for phy-related control.
The firmware is transparent to the driver, but it's necessary for the
firmware download process.

Reviewed-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Change-Id: I35666504cfe7bf213c8f8f0c0223b3089372f2ab
---
v2:
  - merge two commits
  - move main load ram code to a regular function
v3:
  - remove all macros to directly call __mt7996_load_ram()
  - add back missing code which records fw_version to wiphy
---
 mt76_connac_mcu.h |  1 +
 mt7996/mcu.c      | 67 +++++++++++++++++++++++------------------------
 mt7996/mt7996.h   |  7 +++++
 mt7996/pci.c      |  1 +
 4 files changed, 42 insertions(+), 34 deletions(-)

diff --git a/mt76_connac_mcu.h b/mt76_connac_mcu.h
index 91d98eff..d2a3d56b 100644
--- a/mt76_connac_mcu.h
+++ b/mt76_connac_mcu.h
@@ -22,6 +22,7 @@
 
 #define FW_START_OVERRIDE		BIT(0)
 #define FW_START_WORKING_PDA_CR4	BIT(2)
+#define FW_START_WORKING_PDA_DSP	BIT(3)
 
 #define PATCH_SEC_NOT_SUPPORT		GENMASK(31, 0)
 #define PATCH_SEC_TYPE_MASK		GENMASK(15, 0)
diff --git a/mt7996/mcu.c b/mt7996/mcu.c
index 88e2f9d0..545cc987 100644
--- a/mt7996/mcu.c
+++ b/mt7996/mcu.c
@@ -2155,7 +2155,7 @@ out:
 static int
 mt7996_mcu_send_ram_firmware(struct mt7996_dev *dev,
 			     const struct mt7996_fw_trailer *hdr,
-			     const u8 *data, bool is_wa)
+			     const u8 *data, enum mt7996_ram_type type)
 {
 	int i, offset = 0;
 	u32 override = 0, option = 0;
@@ -2167,8 +2167,10 @@ mt7996_mcu_send_ram_firmware(struct mt7996_dev *dev,
 
 		region = (const struct mt7996_fw_region *)((const u8 *)hdr -
 			 (hdr->n_region - i) * sizeof(*region));
+		/* DSP and WA use same mode */
 		mode = mt76_connac_mcu_gen_dl_mode(&dev->mt76,
-						   region->feature_set, is_wa);
+						   region->feature_set,
+						   type != MT7996_RAM_TYPE_WM);
 		len = le32_to_cpu(region->len);
 		addr = le32_to_cpu(region->addr);
 
@@ -2195,19 +2197,22 @@ mt7996_mcu_send_ram_firmware(struct mt7996_dev *dev,
 	if (override)
 		option |= FW_START_OVERRIDE;
 
-	if (is_wa)
+	if (type == MT7996_RAM_TYPE_WA)
 		option |= FW_START_WORKING_PDA_CR4;
+	else if (type == MT7996_RAM_TYPE_DSP)
+		option |= FW_START_WORKING_PDA_DSP;
 
 	return mt76_connac_mcu_start_firmware(&dev->mt76, override, option);
 }
 
-static int mt7996_load_ram(struct mt7996_dev *dev)
+static int __mt7996_load_ram(struct mt7996_dev *dev, const char *fw_type,
+			     const char *fw_file, enum mt7996_ram_type ram_type)
 {
 	const struct mt7996_fw_trailer *hdr;
 	const struct firmware *fw;
 	int ret;
 
-	ret = request_firmware(&fw, MT7996_FIRMWARE_WM, dev->mt76.dev);
+	ret = request_firmware(&fw, fw_file, dev->mt76.dev);
 	if (ret)
 		return ret;
 
@@ -2217,37 +2222,13 @@ static int mt7996_load_ram(struct mt7996_dev *dev)
 		goto out;
 	}
 
-	hdr = (const struct mt7996_fw_trailer *)(fw->data + fw->size - sizeof(*hdr));
-
-	dev_info(dev->mt76.dev, "WM Firmware Version: %.10s, Build Time: %.15s\n",
-		 hdr->fw_ver, hdr->build_date);
+	hdr = (const void *)(fw->data + fw->size - sizeof(*hdr));
+	dev_info(dev->mt76.dev, "%s Firmware Version: %.10s, Build Time: %.15s\n",
+		 fw_type, hdr->fw_ver, hdr->build_date);
 
-	ret = mt7996_mcu_send_ram_firmware(dev, hdr, fw->data, false);
+	ret = mt7996_mcu_send_ram_firmware(dev, hdr, fw->data, ram_type);
 	if (ret) {
-		dev_err(dev->mt76.dev, "Failed to start WM firmware\n");
-		goto out;
-	}
-
-	release_firmware(fw);
-
-	ret = request_firmware(&fw, MT7996_FIRMWARE_WA, dev->mt76.dev);
-	if (ret)
-		return ret;
-
-	if (!fw || !fw->data || fw->size < sizeof(*hdr)) {
-		dev_err(dev->mt76.dev, "Invalid firmware\n");
-		ret = -EINVAL;
-		goto out;
-	}
-
-	hdr = (const struct mt7996_fw_trailer *)(fw->data + fw->size - sizeof(*hdr));
-
-	dev_info(dev->mt76.dev, "WA Firmware Version: %.10s, Build Time: %.15s\n",
-		 hdr->fw_ver, hdr->build_date);
-
-	ret = mt7996_mcu_send_ram_firmware(dev, hdr, fw->data, true);
-	if (ret) {
-		dev_err(dev->mt76.dev, "Failed to start WA firmware\n");
+		dev_err(dev->mt76.dev, "Failed to start %s firmware\n", fw_type);
 		goto out;
 	}
 
@@ -2261,6 +2242,24 @@ out:
 	return ret;
 }
 
+static int mt7996_load_ram(struct mt7996_dev *dev)
+{
+	int ret;
+
+	ret = __mt7996_load_ram(dev, "WM", MT7996_FIRMWARE_WM,
+				MT7996_RAM_TYPE_WM);
+	if (ret)
+		return ret;
+
+	ret = __mt7996_load_ram(dev, "DSP", MT7996_FIRMWARE_DSP,
+				MT7996_RAM_TYPE_DSP);
+	if (ret)
+		return ret;
+
+	return __mt7996_load_ram(dev, "WA", MT7996_FIRMWARE_WA,
+				 MT7996_RAM_TYPE_WA);
+}
+
 static int
 mt7996_firmware_state(struct mt7996_dev *dev, bool wa)
 {
diff --git a/mt7996/mt7996.h b/mt7996/mt7996.h
index 4d7dcb95..7dfdc738 100644
--- a/mt7996/mt7996.h
+++ b/mt7996/mt7996.h
@@ -29,6 +29,7 @@
 
 #define MT7996_FIRMWARE_WA		"mediatek/mt7996/mt7996_wa.bin"
 #define MT7996_FIRMWARE_WM		"mediatek/mt7996/mt7996_wm.bin"
+#define MT7996_FIRMWARE_DSP		"mediatek/mt7996/mt7996_dsp.bin"
 #define MT7996_ROM_PATCH		"mediatek/mt7996/mt7996_rom_patch.bin"
 
 #define MT7996_EEPROM_DEFAULT		"mediatek/mt7996/mt7996_eeprom.bin"
@@ -52,6 +53,12 @@ struct mt7996_sta;
 struct mt7996_dfs_pulse;
 struct mt7996_dfs_pattern;
 
+enum mt7996_ram_type {
+	MT7996_RAM_TYPE_WM,
+	MT7996_RAM_TYPE_WA,
+	MT7996_RAM_TYPE_DSP,
+};
+
 enum mt7996_txq_id {
 	MT7996_TXQ_FWDL = 16,
 	MT7996_TXQ_MCU_WM,
diff --git a/mt7996/pci.c b/mt7996/pci.c
index 64aee3fb..c5301050 100644
--- a/mt7996/pci.c
+++ b/mt7996/pci.c
@@ -219,4 +219,5 @@ MODULE_DEVICE_TABLE(pci, mt7996_pci_device_table);
 MODULE_DEVICE_TABLE(pci, mt7996_hif_device_table);
 MODULE_FIRMWARE(MT7996_FIRMWARE_WA);
 MODULE_FIRMWARE(MT7996_FIRMWARE_WM);
+MODULE_FIRMWARE(MT7996_FIRMWARE_DSP);
 MODULE_FIRMWARE(MT7996_ROM_PATCH);
-- 
2.39.2