ath11k: driver for Qualcomm IEEE 802.11ax devices

ath11k is a new driver for Qualcomm IEEE 802.11ax devices, first
supporting only IPQ8074 SoC using the shared memory AHB bus. ath11k
uses mac80211 and supports AP, Station and Mesh modes.

Even though ath11k has some similar code as with ath10k (especially
the WMI layer) it was concluded to be simpler to have a "clean start"
for ath11k code base and not try to share the code with ath10k. This
makes maintenance easier and avoids major changes in ath10k, which
would have significantly increased the risk of regressions in existing
setups.

Even though the driver is very similar with ath10k but there are major
differences as well. The datapath is completely different. ath11k
supports multiple MACs, called "soc" in the firmware interface. And
there's only one WMI interface to support.

Currently ath11k supports only IEEE 802.11ac mode, but patches for
802.11ax are available and they will be submitted after ath11k is
accepted to upstream.

The firmware images are available from ath11k-firmware repository but
they will be also submitted to linux-firmware:

https://github.com/kvalo/ath11k-firmware

This was tested with firmware version WLAN.HK.2.1.0.1-00629-QCAHKSWPL_SILICONZ-1.

The driver has had multiple authors who are listed in alphabetical
order below.

Signed-off-by: Anilkumar Kolli <akolli@codeaurora.org>
Signed-off-by: Bhagavathi Perumal S <bperumal@codeaurora.org>
Signed-off-by: Ganesh Sesetti <gseset@codeaurora.org>
Signed-off-by: Govindaraj Saminathan <gsamin@codeaurora.org>
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Karthikeyan Periyasamy <periyasa@codeaurora.org>
Signed-off-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Maharaja Kennadyrajan <mkenna@codeaurora.org>
Signed-off-by: Manikanta Pubbisetty <mpubbise@codeaurora.org>
Signed-off-by: Miles Hu <milehu@codeaurora.org>
Signed-off-by: Muna Sinada <msinada@codeaurora.org>
Signed-off-by: Pradeep Kumar Chitrapu <pradeepc@codeaurora.org>
Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org>
Signed-off-by: Sathishkumar Muruganandam <murugana@codeaurora.org>
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: Sriram R <srirrama@codeaurora.org>
Signed-off-by: Sven Eckelmann <seckelmann@datto.com>
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@codeaurora.org>
Signed-off-by: Venkateswara Naralasetty <vnaralas@codeaurora.org>

1 files changed, 145 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath11k/mac.h b/drivers/net/wireless/ath/ath11k/mac.h
new file mode 100644
index 000000000000..f84af1fc4952
--- /dev/null
+++ b/drivers/net/wireless/ath/ath11k/mac.h
@@ -0,0 +1,145 @@
+/* SPDX-License-Identifier: BSD-3-Clause-Clear */
+/*
+ * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
+ */
+
+#ifndef ATH11K_MAC_H
+#define ATH11K_MAC_H
+
+#include <net/mac80211.h>
+#include <net/cfg80211.h>
+
+struct ath11k;
+struct ath11k_base;
+
+struct ath11k_generic_iter {
+	struct ath11k *ar;
+	int ret;
+};
+
+/* number of failed packets (20 packets with 16 sw reties each) */
+#define ATH11K_KICKOUT_THRESHOLD		(20 * 16)
+
+/* Use insanely high numbers to make sure that the firmware implementation
+ * won't start, we have the same functionality already in hostapd. Unit
+ * is seconds.
+ */
+#define ATH11K_KEEPALIVE_MIN_IDLE		3747
+#define ATH11K_KEEPALIVE_MAX_IDLE		3895
+#define ATH11K_KEEPALIVE_MAX_UNRESPONSIVE	3900
+
+#define WMI_HOST_RC_DS_FLAG			0x01
+#define WMI_HOST_RC_CW40_FLAG			0x02
+#define WMI_HOST_RC_SGI_FLAG			0x04
+#define WMI_HOST_RC_HT_FLAG			0x08
+#define WMI_HOST_RC_RTSCTS_FLAG			0x10
+#define WMI_HOST_RC_TX_STBC_FLAG		0x20
+#define WMI_HOST_RC_RX_STBC_FLAG		0xC0
+#define WMI_HOST_RC_RX_STBC_FLAG_S		6
+#define WMI_HOST_RC_WEP_TKIP_FLAG		0x100
+#define WMI_HOST_RC_TS_FLAG			0x200
+#define WMI_HOST_RC_UAPSD_FLAG			0x400
+
+#define WMI_HT_CAP_ENABLED			0x0001
+#define WMI_HT_CAP_HT20_SGI			0x0002
+#define WMI_HT_CAP_DYNAMIC_SMPS			0x0004
+#define WMI_HT_CAP_TX_STBC			0x0008
+#define WMI_HT_CAP_TX_STBC_MASK_SHIFT		3
+#define WMI_HT_CAP_RX_STBC			0x0030
+#define WMI_HT_CAP_RX_STBC_MASK_SHIFT		4
+#define WMI_HT_CAP_LDPC				0x0040
+#define WMI_HT_CAP_L_SIG_TXOP_PROT		0x0080
+#define WMI_HT_CAP_MPDU_DENSITY			0x0700
+#define WMI_HT_CAP_MPDU_DENSITY_MASK_SHIFT	8
+#define WMI_HT_CAP_HT40_SGI			0x0800
+#define WMI_HT_CAP_RX_LDPC			0x1000
+#define WMI_HT_CAP_TX_LDPC			0x2000
+#define WMI_HT_CAP_IBF_BFER			0x4000
+
+/* These macros should be used when we wish to advertise STBC support for
+ * only 1SS or 2SS or 3SS.
+ */
+#define WMI_HT_CAP_RX_STBC_1SS			0x0010
+#define WMI_HT_CAP_RX_STBC_2SS			0x0020
+#define WMI_HT_CAP_RX_STBC_3SS			0x0030
+
+#define WMI_HT_CAP_DEFAULT_ALL (WMI_HT_CAP_ENABLED    | \
+				WMI_HT_CAP_HT20_SGI   | \
+				WMI_HT_CAP_HT40_SGI   | \
+				WMI_HT_CAP_TX_STBC    | \
+				WMI_HT_CAP_RX_STBC    | \
+				WMI_HT_CAP_LDPC)
+
+#define WMI_VHT_CAP_MAX_MPDU_LEN_MASK		0x00000003
+#define WMI_VHT_CAP_RX_LDPC			0x00000010
+#define WMI_VHT_CAP_SGI_80MHZ			0x00000020
+#define WMI_VHT_CAP_SGI_160MHZ			0x00000040
+#define WMI_VHT_CAP_TX_STBC			0x00000080
+#define WMI_VHT_CAP_RX_STBC_MASK		0x00000300
+#define WMI_VHT_CAP_RX_STBC_MASK_SHIFT		8
+#define WMI_VHT_CAP_SU_BFER			0x00000800
+#define WMI_VHT_CAP_SU_BFEE			0x00001000
+#define WMI_VHT_CAP_MAX_CS_ANT_MASK		0x0000E000
+#define WMI_VHT_CAP_MAX_CS_ANT_MASK_SHIFT	13
+#define WMI_VHT_CAP_MAX_SND_DIM_MASK		0x00070000
+#define WMI_VHT_CAP_MAX_SND_DIM_MASK_SHIFT	16
+#define WMI_VHT_CAP_MU_BFER			0x00080000
+#define WMI_VHT_CAP_MU_BFEE			0x00100000
+#define WMI_VHT_CAP_MAX_AMPDU_LEN_EXP		0x03800000
+#define WMI_VHT_CAP_MAX_AMPDU_LEN_EXP_SHIT	23
+#define WMI_VHT_CAP_RX_FIXED_ANT		0x10000000
+#define WMI_VHT_CAP_TX_FIXED_ANT		0x20000000
+
+#define WMI_VHT_CAP_MAX_MPDU_LEN_11454		0x00000002
+
+/* These macros should be used when we wish to advertise STBC support for
+ * only 1SS or 2SS or 3SS.
+ */
+#define WMI_VHT_CAP_RX_STBC_1SS			0x00000100
+#define WMI_VHT_CAP_RX_STBC_2SS			0x00000200
+#define WMI_VHT_CAP_RX_STBC_3SS			0x00000300
+
+#define WMI_VHT_CAP_DEFAULT_ALL (WMI_VHT_CAP_MAX_MPDU_LEN_11454  | \
+				 WMI_VHT_CAP_SGI_80MHZ      |       \
+				 WMI_VHT_CAP_TX_STBC        |       \
+				 WMI_VHT_CAP_RX_STBC_MASK   |       \
+				 WMI_VHT_CAP_RX_LDPC        |       \
+				 WMI_VHT_CAP_MAX_AMPDU_LEN_EXP   |  \
+				 WMI_VHT_CAP_RX_FIXED_ANT   |       \
+				 WMI_VHT_CAP_TX_FIXED_ANT)
+
+/* FIXME: should these be in ieee80211.h? */
+#define IEEE80211_VHT_MCS_SUPPORT_0_11_MASK	GENMASK(23, 16)
+#define IEEE80211_DISABLE_VHT_MCS_SUPPORT_0_11	BIT(24)
+
+#define WMI_MAX_SPATIAL_STREAM			3
+
+#define ATH11K_CHAN_WIDTH_NUM			8
+
+extern const struct htt_rx_ring_tlv_filter ath11k_mac_mon_status_filter_default;
+
+int ath11k_mac_create(struct ath11k_base *ab);
+void ath11k_mac_destroy(struct ath11k_base *ab);
+void ath11k_mac_unregister(struct ath11k_base *ab);
+int ath11k_mac_hw_ratecode_to_legacy_rate(u8 hw_rc, u8 preamble, u8 *rateidx,
+					  u16 *rate);
+u8 ath11k_mac_bitrate_to_idx(const struct ieee80211_supported_band *sband,
+			     u32 bitrate);
+u8 ath11k_mac_hw_rate_to_idx(const struct ieee80211_supported_band *sband,
+			     u8 hw_rate, bool cck);
+
+void __ath11k_mac_scan_finish(struct ath11k *ar);
+void ath11k_mac_scan_finish(struct ath11k *ar);
+
+struct ath11k_vif *ath11k_mac_get_arvif(struct ath11k *ar, u32 vdev_id);
+struct ath11k_vif *ath11k_mac_get_arvif_by_vdev_id(struct ath11k_base *ab,
+						   u32 vdev_id);
+struct ath11k *ath11k_mac_get_ar_by_vdev_id(struct ath11k_base *ab, u32 vdev_id);
+struct ath11k *ath11k_mac_get_ar_by_pdev_id(struct ath11k_base *ab, u32 pdev_id);
+struct ath11k *ath11k_mac_get_ar_vdev_stop_status(struct ath11k_base *ab,
+						  u32 vdev_id);
+
+void ath11k_mac_drain_tx(struct ath11k *ar);
+void ath11k_mac_peer_cleanup_all(struct ath11k *ar);
+int ath11k_mac_tx_mgmt_pending_free(int buf_id, void *skb, void *ctx);
+#endif