[][MAC80211][misc][preliminary version of Filogic 680 on Filogic 880]
[Description]
Add preliminary version of Filogic 680 on Filogic 880.
Based on mt76 revision: 269df4b01f27 ("wifi: mt76: fix rx checksum offload on mt7615/mt7915/mt7921")
This series adds mt7996, a new mac80211 driver for MediaTek Wi-Fi 7
(802.11be) devices, which currently supports AP, station, mesh, and
monitor modes.
mt7996 first supports Filogic 680, which is a Wi-Fi 7 chipset supporting
concurrent tri-band operation at 6 GHz, 5 GHz, and 2.4 GHz with 4x4
antennas on each band. There are several variants that will be added in
upcoming patches. For more details, please refer to [1].
mt7996 supports only Wi-Fi 6E at the moment, whereas Wi-Fi 7 and its
specific features are work in progress. They will be introduced in
further patches.
[1] https://corp.mediatek.com/news-events/press-releases/mediatek-announces-worlds-first-complete-wi-fi-7-platforms-for-access-points-and-clients
[Release-log]
N/A
Change-Id: I7d3dea2626556751c9b0462e587743fad5287be0
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6709775
diff --git a/autobuild_mac80211_release/mt7988_mt7996_mac80211/package/kernel/mt76/src/mt7921/sdio_mcu.c b/autobuild_mac80211_release/mt7988_mt7996_mac80211/package/kernel/mt76/src/mt7921/sdio_mcu.c
new file mode 100644
index 0000000..5c14897
--- /dev/null
+++ b/autobuild_mac80211_release/mt7988_mt7996_mac80211/package/kernel/mt76/src/mt7921/sdio_mcu.c
@@ -0,0 +1,175 @@
+// SPDX-License-Identifier: ISC
+/* Copyright (C) 2021 MediaTek Inc. */
+
+#include <linux/kernel.h>
+#include <linux/mmc/sdio_func.h>
+#include <linux/module.h>
+#include <linux/iopoll.h>
+
+#include "mt7921.h"
+#include "../sdio.h"
+#include "mac.h"
+#include "mcu.h"
+#include "regs.h"
+
+static int
+mt7921s_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
+ int cmd, int *seq)
+{
+ struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
+ enum mt7921_sdio_pkt_type type = MT7921_SDIO_CMD;
+ enum mt76_mcuq_id txq = MT_MCUQ_WM;
+ int ret, pad;
+
+ /* We just return in case firmware assertion to avoid blocking the
+ * common workqueue to run, for example, the coredump work might be
+ * blocked by mt7921_mac_work that is excuting register access via sdio
+ * bus.
+ */
+ if (dev->fw_assert)
+ return -EBUSY;
+
+ ret = mt76_connac2_mcu_fill_message(mdev, skb, cmd, seq);
+ if (ret)
+ return ret;
+
+ mdev->mcu.timeout = 3 * HZ;
+
+ if (cmd == MCU_CMD(FW_SCATTER))
+ type = MT7921_SDIO_FWDL;
+
+ mt7921_skb_add_usb_sdio_hdr(dev, skb, type);
+ pad = round_up(skb->len, 4) - skb->len;
+ __skb_put_zero(skb, pad);
+
+ ret = mt76_tx_queue_skb_raw(dev, mdev->q_mcu[txq], skb, 0);
+ if (ret)
+ return ret;
+
+ mt76_queue_kick(dev, mdev->q_mcu[txq]);
+
+ return ret;
+}
+
+static u32 mt7921s_read_rm3r(struct mt7921_dev *dev)
+{
+ struct mt76_sdio *sdio = &dev->mt76.sdio;
+
+ return sdio_readl(sdio->func, MCR_D2HRM3R, NULL);
+}
+
+static u32 mt7921s_clear_rm3r_drv_own(struct mt7921_dev *dev)
+{
+ struct mt76_sdio *sdio = &dev->mt76.sdio;
+ u32 val;
+
+ val = sdio_readl(sdio->func, MCR_D2HRM3R, NULL);
+ if (val)
+ sdio_writel(sdio->func, H2D_SW_INT_CLEAR_MAILBOX_ACK,
+ MCR_WSICR, NULL);
+
+ return val;
+}
+
+int mt7921s_mcu_init(struct mt7921_dev *dev)
+{
+ static const struct mt76_mcu_ops mt7921s_mcu_ops = {
+ .headroom = MT_SDIO_HDR_SIZE +
+ sizeof(struct mt76_connac2_mcu_txd),
+ .tailroom = MT_SDIO_TAIL_SIZE,
+ .mcu_skb_send_msg = mt7921s_mcu_send_message,
+ .mcu_parse_response = mt7921_mcu_parse_response,
+ .mcu_rr = mt76_connac_mcu_reg_rr,
+ .mcu_wr = mt76_connac_mcu_reg_wr,
+ };
+ int ret;
+
+ mt7921s_mcu_drv_pmctrl(dev);
+
+ dev->mt76.mcu_ops = &mt7921s_mcu_ops;
+
+ ret = mt7921_run_firmware(dev);
+ if (ret)
+ return ret;
+
+ set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state);
+
+ return 0;
+}
+
+int mt7921s_mcu_drv_pmctrl(struct mt7921_dev *dev)
+{
+ struct sdio_func *func = dev->mt76.sdio.func;
+ struct mt76_phy *mphy = &dev->mt76.phy;
+ struct mt76_connac_pm *pm = &dev->pm;
+ u32 status;
+ int err;
+
+ sdio_claim_host(func);
+
+ sdio_writel(func, WHLPCR_FW_OWN_REQ_CLR, MCR_WHLPCR, NULL);
+
+ err = readx_poll_timeout(mt76s_read_pcr, &dev->mt76, status,
+ status & WHLPCR_IS_DRIVER_OWN, 2000, 1000000);
+
+ if (!err && test_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state))
+ err = readx_poll_timeout(mt7921s_read_rm3r, dev, status,
+ status & D2HRM3R_IS_DRIVER_OWN,
+ 2000, 1000000);
+
+ sdio_release_host(func);
+
+ if (err < 0) {
+ dev_err(dev->mt76.dev, "driver own failed\n");
+ return -EIO;
+ }
+
+ clear_bit(MT76_STATE_PM, &mphy->state);
+
+ pm->stats.last_wake_event = jiffies;
+ pm->stats.doze_time += pm->stats.last_wake_event -
+ pm->stats.last_doze_event;
+
+ return 0;
+}
+
+int mt7921s_mcu_fw_pmctrl(struct mt7921_dev *dev)
+{
+ struct sdio_func *func = dev->mt76.sdio.func;
+ struct mt76_phy *mphy = &dev->mt76.phy;
+ struct mt76_connac_pm *pm = &dev->pm;
+ u32 status;
+ int err;
+
+ sdio_claim_host(func);
+
+ if (test_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state)) {
+ err = readx_poll_timeout(mt7921s_clear_rm3r_drv_own,
+ dev, status,
+ !(status & D2HRM3R_IS_DRIVER_OWN),
+ 2000, 1000000);
+ if (err < 0) {
+ dev_err(dev->mt76.dev, "mailbox ACK not cleared\n");
+ goto out;
+ }
+ }
+
+ sdio_writel(func, WHLPCR_FW_OWN_REQ_SET, MCR_WHLPCR, NULL);
+
+ err = readx_poll_timeout(mt76s_read_pcr, &dev->mt76, status,
+ !(status & WHLPCR_IS_DRIVER_OWN), 2000, 1000000);
+out:
+ sdio_release_host(func);
+
+ if (err < 0) {
+ dev_err(dev->mt76.dev, "firmware own failed\n");
+ clear_bit(MT76_STATE_PM, &mphy->state);
+ return -EIO;
+ }
+
+ pm->stats.last_doze_event = jiffies;
+ pm->stats.awake_time += pm->stats.last_doze_event -
+ pm->stats.last_wake_event;
+
+ return 0;
+}