mt76x0: pci: move mcu code in pci_mcu.c

Move pci mcu code in a dedicated source file in order to
improve maintainability and facilitate new device support
development
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt76x0/Makefile

@@ -6,7 +6,7 @@ mt76x0-common-y := \
 	init.o main.o trace.o eeprom.o phy.o \
 	mac.o debugfs.o tx.o
 mt76x0u-y := usb.o
-mt76x0e-y := pci.o
+mt76x0e-y := pci.o pci_mcu.o
 
 # ccflags-y := -DDEBUG
 CFLAGS_trace.o := -I$(src)

drivers/net/wireless/mediatek/mt76/mt76x0/mcu.h

@@ -41,6 +41,7 @@ enum mcu_calibrate {
 	MCU_CAL_TX_GROUP_DELAY,
 };
 
+int mt76x0e_mcu_init(struct mt76x0_dev *dev);
 static inline int mt76x0_firmware_running(struct mt76x0_dev *dev)
 {
 	return mt76_rr(dev, MT_MCU_COM_REG0) == 1;

drivers/net/wireless/mediatek/mt76/mt76x0/pci.c

@@ -15,123 +15,12 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/firmware.h>
 #include <linux/module.h>
 #include <linux/pci.h>
 
 #include "mt76x0.h"
 #include "mcu.h"
 
-#define MT7610E_FIRMWARE	"mediatek/mt7610e.bin"
-#define MT7650E_FIRMWARE	"mediatek/mt7650e.bin"
-
-#define MT_MCU_IVB_ADDR		(MT_MCU_ILM_ADDR + 0x54000 - MT_MCU_IVB_SIZE)
-
-static int mt76x0e_load_firmware(struct mt76x0_dev *dev)
-{
-	bool is_combo_chip = mt76_chip(&dev->mt76) != 0x7610;
-	u32 val, ilm_len, dlm_len, offset = 0;
-	const struct mt76x02_fw_header *hdr;
-	const struct firmware *fw;
-	const char *firmware;
-	const u8 *fw_payload;
-	int len, err;
-
-	if (mt76x0_firmware_running(dev))
-		return 0;
-
-	if (is_combo_chip)
-		firmware = MT7650E_FIRMWARE;
-	else
-		firmware = MT7610E_FIRMWARE;
-
-	err = request_firmware(&fw, firmware, dev->mt76.dev);
-	if (err)
-		return err;
-
-	if (!fw || !fw->data || fw->size < sizeof(*hdr)) {
-		err = -EIO;
-		goto out;
-	}
-
-	hdr = (const struct mt76x02_fw_header *)fw->data;
-
-	len = sizeof(*hdr);
-	len += le32_to_cpu(hdr->ilm_len);
-	len += le32_to_cpu(hdr->dlm_len);
-
-	if (fw->size != len) {
-		err = -EIO;
-		goto out;
-	}
-
-	fw_payload = fw->data + sizeof(*hdr);
-
-	val = le16_to_cpu(hdr->fw_ver);
-	dev_info(dev->mt76.dev, "Firmware Version: %d.%d.%02d\n",
-		 (val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf);
-
-	val = le16_to_cpu(hdr->fw_ver);
-	dev_dbg(dev->mt76.dev,
-		"Firmware Version: %d.%d.%02d Build: %x Build time: %.16s\n",
-		(val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf,
-		le16_to_cpu(hdr->build_ver), hdr->build_time);
-
-	if (is_combo_chip && !mt76_poll(dev, MT_MCU_SEMAPHORE_00, 1, 1, 600)) {
-		dev_err(dev->mt76.dev,
-			"Could not get hardware semaphore for loading fw\n");
-		err = -ETIMEDOUT;
-		goto out;
-	}
-
-	/* upload ILM. */
-	mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, 0);
-	ilm_len = le32_to_cpu(hdr->ilm_len);
-	if (is_combo_chip) {
-		ilm_len -= MT_MCU_IVB_SIZE;
-		offset = MT_MCU_IVB_SIZE;
-	}
-	dev_dbg(dev->mt76.dev, "loading FW - ILM %u\n", ilm_len);
-	mt76_wr_copy(dev, MT_MCU_ILM_ADDR + offset, fw_payload + offset,
-		     ilm_len);
-
-	/* upload IVB. */
-	if (is_combo_chip) {
-		dev_dbg(dev->mt76.dev, "loading FW - IVB %u\n",
-			MT_MCU_IVB_SIZE);
-		mt76_wr_copy(dev, MT_MCU_IVB_ADDR, fw_payload, MT_MCU_IVB_SIZE);
-	}
-
-	/* upload DLM. */
-	mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, MT_MCU_DLM_OFFSET);
-	dlm_len = le32_to_cpu(hdr->dlm_len);
-	dev_dbg(dev->mt76.dev, "loading FW - DLM %u\n", dlm_len);
-	mt76_wr_copy(dev, MT_MCU_ILM_ADDR,
-		     fw_payload + le32_to_cpu(hdr->ilm_len), dlm_len);
-
-	/* trigger firmware */
-	mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, 0);
-	if (is_combo_chip)
-		mt76_wr(dev, MT_MCU_INT_LEVEL, 0x3);
-	else
-		mt76_wr(dev, MT_MCU_RESET_CTL, 0x300);
-
-	if (!mt76_poll_msec(dev, MT_MCU_COM_REG0, 1, 1, 1000)) {
-		dev_err(dev->mt76.dev, "Firmware failed to start\n");
-		err = -ETIMEDOUT;
-		goto out;
-	}
-
-	dev_dbg(dev->mt76.dev, "Firmware running!\n");
-
-out:
-	if (is_combo_chip)
-		mt76_wr(dev, MT_MCU_SEMAPHORE_00, 0x1);
-	release_firmware(fw);
-
-	return err;
-}
-
 static int
 mt76x0e_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 {
@@ -161,7 +50,7 @@ mt76x0e_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	dev->mt76.rev = mt76_rr(dev, MT_ASIC_VERSION);
 	dev_info(dev->mt76.dev, "ASIC revision: %08x\n", dev->mt76.rev);
 
-	ret = mt76x0e_load_firmware(dev);
+	ret = mt76x0e_mcu_init(dev);
 	if (ret < 0)
 		goto error;
 

drivers/net/wireless/mediatek/mt76/mt76x0/pci_mcu.c

+/*
+ * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#include <linux/kernel.h>
+#include <linux/firmware.h>
+
+#include "mt76x0.h"
+#include "mcu.h"
+
+#define MT7610E_FIRMWARE	"mediatek/mt7610e.bin"
+#define MT7650E_FIRMWARE	"mediatek/mt7650e.bin"
+
+#define MT_MCU_IVB_ADDR		(MT_MCU_ILM_ADDR + 0x54000 - MT_MCU_IVB_SIZE)
+
+static int mt76x0e_load_firmware(struct mt76x0_dev *dev)
+{
+	bool is_combo_chip = mt76_chip(&dev->mt76) != 0x7610;
+	u32 val, ilm_len, dlm_len, offset = 0;
+	const struct mt76x02_fw_header *hdr;
+	const struct firmware *fw;
+	const char *firmware;
+	const u8 *fw_payload;
+	int len, err;
+
+	if (is_combo_chip)
+		firmware = MT7650E_FIRMWARE;
+	else
+		firmware = MT7610E_FIRMWARE;
+
+	err = request_firmware(&fw, firmware, dev->mt76.dev);
+	if (err)
+		return err;
+
+	if (!fw || !fw->data || fw->size < sizeof(*hdr)) {
+		err = -EIO;
+		goto out;
+	}
+
+	hdr = (const struct mt76x02_fw_header *)fw->data;
+
+	len = sizeof(*hdr);
+	len += le32_to_cpu(hdr->ilm_len);
+	len += le32_to_cpu(hdr->dlm_len);
+
+	if (fw->size != len) {
+		err = -EIO;
+		goto out;
+	}
+
+	fw_payload = fw->data + sizeof(*hdr);
+
+	val = le16_to_cpu(hdr->fw_ver);
+	dev_info(dev->mt76.dev, "Firmware Version: %d.%d.%02d\n",
+		 (val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf);
+
+	val = le16_to_cpu(hdr->fw_ver);
+	dev_dbg(dev->mt76.dev,
+		"Firmware Version: %d.%d.%02d Build: %x Build time: %.16s\n",
+		(val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf,
+		le16_to_cpu(hdr->build_ver), hdr->build_time);
+
+	if (is_combo_chip && !mt76_poll(dev, MT_MCU_SEMAPHORE_00, 1, 1, 600)) {
+		dev_err(dev->mt76.dev,
+			"Could not get hardware semaphore for loading fw\n");
+		err = -ETIMEDOUT;
+		goto out;
+	}
+
+	/* upload ILM. */
+	mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, 0);
+	ilm_len = le32_to_cpu(hdr->ilm_len);
+	if (is_combo_chip) {
+		ilm_len -= MT_MCU_IVB_SIZE;
+		offset = MT_MCU_IVB_SIZE;
+	}
+	dev_dbg(dev->mt76.dev, "loading FW - ILM %u\n", ilm_len);
+	mt76_wr_copy(dev, MT_MCU_ILM_ADDR + offset, fw_payload + offset,
+		     ilm_len);
+
+	/* upload IVB. */
+	if (is_combo_chip) {
+		dev_dbg(dev->mt76.dev, "loading FW - IVB %u\n",
+			MT_MCU_IVB_SIZE);
+		mt76_wr_copy(dev, MT_MCU_IVB_ADDR, fw_payload, MT_MCU_IVB_SIZE);
+	}
+
+	/* upload DLM. */
+	mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, MT_MCU_DLM_OFFSET);
+	dlm_len = le32_to_cpu(hdr->dlm_len);
+	dev_dbg(dev->mt76.dev, "loading FW - DLM %u\n", dlm_len);
+	mt76_wr_copy(dev, MT_MCU_ILM_ADDR,
+		     fw_payload + le32_to_cpu(hdr->ilm_len), dlm_len);
+
+	/* trigger firmware */
+	mt76_wr(dev, MT_MCU_PCIE_REMAP_BASE4, 0);
+	if (is_combo_chip)
+		mt76_wr(dev, MT_MCU_INT_LEVEL, 0x3);
+	else
+		mt76_wr(dev, MT_MCU_RESET_CTL, 0x300);
+
+	if (!mt76_poll_msec(dev, MT_MCU_COM_REG0, 1, 1, 1000)) {
+		dev_err(dev->mt76.dev, "Firmware failed to start\n");
+		err = -ETIMEDOUT;
+		goto out;
+	}
+
+	dev_dbg(dev->mt76.dev, "Firmware running!\n");
+
+out:
+	if (is_combo_chip)
+		mt76_wr(dev, MT_MCU_SEMAPHORE_00, 0x1);
+	release_firmware(fw);
+
+	return err;
+}
+
+int mt76x0e_mcu_init(struct mt76x0_dev *dev)
+{
+	static const struct mt76_mcu_ops mt76x0e_mcu_ops = {
+		.mcu_msg_alloc = mt76x02_mcu_msg_alloc,
+		.mcu_send_msg = mt76x02_mcu_msg_send,
+	};
+	int err;
+
+	dev->mt76.mcu_ops = &mt76x0e_mcu_ops;
+
+	err = mt76x0e_load_firmware(dev);
+	if (err < 0)
+		return err;
+
+	set_bit(MT76_STATE_MCU_RUNNING, &dev->mt76.state);
+
+	return 0;
+}