From: Kalle Valo <kvalo@codeaurora.org>
To: linux-wireless@vger.kernel.org
Cc: ath11k@lists.infradead.org, devicetree@vger.kernel.org
Subject: [PATCH v3 07/49] ath11k: add ce.h
Date: Fri, 15 Nov 2019 11:28:31 +0200 [thread overview]
Message-ID: <1573810153-29623-8-git-send-email-kvalo@codeaurora.org> (raw)
In-Reply-To: <1573810153-29623-1-git-send-email-kvalo@codeaurora.org>
(patches split for easier review, see the cover letter for more)
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
drivers/net/wireless/ath/ath11k/ce.h | 178 +++++++++++++++++++++++++++++++++++
1 file changed, 178 insertions(+)
diff --git a/drivers/net/wireless/ath/ath11k/ce.h b/drivers/net/wireless/ath/ath11k/ce.h
new file mode 100644
index 000000000000..6174eac84410
--- /dev/null
+++ b/drivers/net/wireless/ath/ath11k/ce.h
@@ -0,0 +1,178 @@
+/* SPDX-License-Identifier: BSD-3-Clause-Clear */
+/*
+ * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
+ */
+
+#ifndef ATH11K_CE_H
+#define ATH11K_CE_H
+
+#define CE_COUNT 12
+
+/* Byte swap data words */
+#define CE_ATTR_BYTE_SWAP_DATA 2
+
+/* no interrupt on copy completion */
+#define CE_ATTR_DIS_INTR 8
+
+/* Host software's Copy Engine configuration. */
+#ifdef __BIG_ENDIAN
+#define CE_ATTR_FLAGS CE_ATTR_BYTE_SWAP_DATA
+#else
+#define CE_ATTR_FLAGS 0
+#endif
+
+/* Threshold to poll for tx completion in case of Interrupt disabled CE's */
+#define ATH11K_CE_USAGE_THRESHOLD 32
+
+void ath11k_ce_byte_swap(void *mem, u32 len);
+
+/*
+ * Directions for interconnect pipe configuration.
+ * These definitions may be used during configuration and are shared
+ * between Host and Target.
+ *
+ * Pipe Directions are relative to the Host, so PIPEDIR_IN means
+ * "coming IN over air through Target to Host" as with a WiFi Rx operation.
+ * Conversely, PIPEDIR_OUT means "going OUT from Host through Target over air"
+ * as with a WiFi Tx operation. This is somewhat awkward for the "middle-man"
+ * Target since things that are "PIPEDIR_OUT" are coming IN to the Target
+ * over the interconnect.
+ */
+#define PIPEDIR_NONE 0
+#define PIPEDIR_IN 1 /* Target-->Host, WiFi Rx direction */
+#define PIPEDIR_OUT 2 /* Host->Target, WiFi Tx direction */
+#define PIPEDIR_INOUT 3 /* bidirectional */
+#define PIPEDIR_INOUT_H2H 4 /* bidirectional, host to host */
+
+/* CE address/mask */
+#define CE_HOST_IE_ADDRESS 0x00A1803C
+#define CE_HOST_IE_2_ADDRESS 0x00A18040
+#define CE_HOST_IE_3_ADDRESS CE_HOST_IE_ADDRESS
+
+#define CE_HOST_IE_3_SHIFT 0xC
+
+#define CE_RING_IDX_INCR(nentries_mask, idx) (((idx) + 1) & (nentries_mask))
+
+#define ATH11K_CE_RX_POST_RETRY_JIFFIES 50
+
+struct ath11k_base;
+
+/* Establish a mapping between a service/direction and a pipe. */
+struct service_to_pipe {
+ __le32 service_id;
+ __le32 pipedir;
+ __le32 pipenum;
+};
+
+/*
+ * Configuration information for a Copy Engine pipe.
+ * Passed from Host to Target during startup (one per CE).
+ *
+ * NOTE: Structure is shared between Host software and Target firmware!
+ */
+struct ce_pipe_config {
+ __le32 pipenum;
+ __le32 pipedir;
+ __le32 nentries;
+ __le32 nbytes_max;
+ __le32 flags;
+ __le32 reserved;
+};
+
+struct ce_attr {
+ /* CE_ATTR_* values */
+ unsigned int flags;
+
+ /* #entries in source ring - Must be a power of 2 */
+ unsigned int src_nentries;
+
+ /*
+ * Max source send size for this CE.
+ * This is also the minimum size of a destination buffer.
+ */
+ unsigned int src_sz_max;
+
+ /* #entries in destination ring - Must be a power of 2 */
+ unsigned int dest_nentries;
+
+ void (*recv_cb)(struct ath11k_base *, struct sk_buff *);
+};
+
+#define CE_DESC_RING_ALIGN 8
+
+struct ath11k_ce_ring {
+ /* Number of entries in this ring; must be power of 2 */
+ unsigned int nentries;
+ unsigned int nentries_mask;
+
+ /* For dest ring, this is the next index to be processed
+ * by software after it was/is received into.
+ *
+ * For src ring, this is the last descriptor that was sent
+ * and completion processed by software.
+ *
+ * Regardless of src or dest ring, this is an invariant
+ * (modulo ring size):
+ * write index >= read index >= sw_index
+ */
+ unsigned int sw_index;
+ /* cached copy */
+ unsigned int write_index;
+
+ /* Start of DMA-coherent area reserved for descriptors */
+ /* Host address space */
+ void *base_addr_owner_space_unaligned;
+ /* CE address space */
+ u32 base_addr_ce_space_unaligned;
+
+ /* Actual start of descriptors.
+ * Aligned to descriptor-size boundary.
+ * Points into reserved DMA-coherent area, above.
+ */
+ /* Host address space */
+ void *base_addr_owner_space;
+
+ /* CE address space */
+ u32 base_addr_ce_space;
+
+ /* HAL ring id */
+ u32 hal_ring_id;
+
+ /* keep last */
+ struct sk_buff *skb[0];
+};
+
+struct ath11k_ce_pipe {
+ struct ath11k_base *ab;
+ u16 pipe_num;
+ unsigned int attr_flags;
+ unsigned int buf_sz;
+ unsigned int rx_buf_needed;
+
+ void (*send_cb)(struct ath11k_ce_pipe *);
+ void (*recv_cb)(struct ath11k_base *, struct sk_buff *);
+
+ struct tasklet_struct intr_tq;
+ struct ath11k_ce_ring *src_ring;
+ struct ath11k_ce_ring *dest_ring;
+ struct ath11k_ce_ring *status_ring;
+};
+
+struct ath11k_ce {
+ struct ath11k_ce_pipe ce_pipe[CE_COUNT];
+ /* Protects rings of all ce pipes */
+ spinlock_t ce_lock;
+};
+
+void ath11k_ce_cleanup_pipes(struct ath11k_base *ab);
+void ath11k_ce_rx_replenish_retry(struct timer_list *t);
+void ath11k_ce_per_engine_service(struct ath11k_base *ab, u16 ce_id);
+int ath11k_ce_send(struct ath11k_base *ab, struct sk_buff *skb, u8 pipe_id,
+ u16 transfer_id);
+void ath11k_ce_rx_post_buf(struct ath11k_base *ab);
+int ath11k_ce_init_pipes(struct ath11k_base *ab);
+int ath11k_ce_alloc_pipes(struct ath11k_base *ab);
+void ath11k_ce_free_pipes(struct ath11k_base *ab);
+int ath11k_ce_get_attr_flags(int ce_id);
+void ath11k_ce_poll_send_completed(struct ath11k_base *ab, u8 pipe_id);
+#endif
next prev parent reply other threads:[~2019-11-15 9:29 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-15 9:28 [PATCH v3 00/49] ath11k: driver for Qualcomm IEEE 802.11ax devices Kalle Valo
2019-11-15 9:28 ` [PATCH v3 01/49] dt: bindings: net: add qcom,ath11k.yaml Kalle Valo
2019-11-23 0:23 ` Rob Herring
2019-11-15 9:28 ` [PATCH v3 02/49] ath11k: add Kconfig Kalle Valo
2019-11-15 9:28 ` [PATCH v3 03/49] ath11k: add Makefile Kalle Valo
2019-11-15 9:28 ` [PATCH v3 04/49] ath11k: add ahb.c Kalle Valo
2019-11-15 9:28 ` [PATCH v3 05/49] ath11k: add ahb.h Kalle Valo
2019-11-15 9:28 ` [PATCH v3 06/49] ath11k: add ce.c Kalle Valo
2019-11-15 9:28 ` Kalle Valo [this message]
2019-11-15 9:28 ` [PATCH v3 08/49] ath11k: add core.c Kalle Valo
2019-11-15 9:28 ` [PATCH v3 09/49] ath11k: add core.h Kalle Valo
2019-11-15 9:28 ` [PATCH v3 10/49] ath11k: add debug.c Kalle Valo
2019-11-15 9:28 ` [PATCH v3 11/49] ath11k: add debug.h Kalle Valo
2019-11-15 9:28 ` [PATCH v3 12/49] ath11k: add debug_htt_stats.c Kalle Valo
2019-11-15 9:28 ` [PATCH v3 13/49] ath11k: add debug_htt_stats.h Kalle Valo
2019-11-15 9:28 ` [PATCH v3 14/49] ath11k: add debugfs_sta.c Kalle Valo
2019-11-15 9:28 ` [PATCH v3 15/49] ath11k: add dp.c Kalle Valo
2019-11-15 9:28 ` [PATCH v3 16/49] ath11k: add dp.h Kalle Valo
2019-11-15 9:28 ` [PATCH v3 17/49] ath11k: add dp_rx.c Kalle Valo
2019-11-15 9:28 ` [PATCH v3 18/49] ath11k: add dp_rx.h Kalle Valo
2019-11-15 9:28 ` [PATCH v3 19/49] ath11k: add dp_tx.c Kalle Valo
2019-11-15 9:28 ` [PATCH v3 20/49] ath11k: add dp_tx.h Kalle Valo
2019-11-15 9:28 ` [PATCH v3 21/49] ath11k: add hal.c Kalle Valo
2019-11-15 9:28 ` [PATCH v3 22/49] ath11k: add hal.h Kalle Valo
2019-11-15 9:28 ` [PATCH v3 23/49] ath11k: add hal_desc.h Kalle Valo
2019-11-15 9:28 ` [PATCH v3 24/49] ath11k: add hal_rx.c Kalle Valo
2019-11-15 9:28 ` [PATCH v3 25/49] ath11k: add hal_rx.h Kalle Valo
2019-11-15 9:28 ` [PATCH v3 26/49] ath11k: add hal_tx.c Kalle Valo
2019-11-15 9:28 ` [PATCH v3 27/49] ath11k: add hal_tx.h Kalle Valo
2019-11-15 9:28 ` [PATCH v3 28/49] ath11k: add htc.c Kalle Valo
2019-11-15 9:28 ` [PATCH v3 29/49] ath11k: add htc.h Kalle Valo
2019-11-15 9:28 ` [PATCH v3 30/49] ath11k: add hw.h Kalle Valo
2019-11-15 9:28 ` [PATCH v3 31/49] ath11k: add mac.c Kalle Valo
2019-11-15 9:28 ` [PATCH v3 32/49] ath11k: add mac.h Kalle Valo
2019-11-15 9:28 ` [PATCH v3 33/49] ath11k: add peer.c Kalle Valo
2019-11-15 9:28 ` [PATCH v3 34/49] ath11k: add peer.h Kalle Valo
2019-11-15 9:28 ` [PATCH v3 35/49] ath11k: add qmi.c Kalle Valo
2019-11-15 9:29 ` [PATCH v3 36/49] ath11k: add qmi.h Kalle Valo
2019-11-15 9:29 ` [PATCH v3 37/49] ath11k: add reg.c Kalle Valo
2019-11-15 9:29 ` [PATCH v3 38/49] ath11k: add reg.h Kalle Valo
2019-11-15 9:29 ` [PATCH v3 39/49] ath11k: add rx_desc.h Kalle Valo
2019-11-15 9:29 ` [PATCH v3 40/49] ath11k: add testmode.c Kalle Valo
2019-11-15 9:29 ` [PATCH v3 41/49] ath11k: add testmode.h Kalle Valo
2019-11-15 9:29 ` [PATCH v3 42/49] ath11k: add testmode_i.h Kalle Valo
2019-11-15 9:29 ` [PATCH v3 43/49] ath11k: add trace.c Kalle Valo
2019-11-15 9:29 ` [PATCH v3 44/49] ath11k: add trace.h Kalle Valo
2019-11-15 9:29 ` [PATCH v3 45/49] ath11k: add wmi.c Kalle Valo
2019-11-15 9:29 ` [PATCH v3 46/49] ath11k: add wmi.h Kalle Valo
2019-11-15 9:29 ` [PATCH v3 47/49] ath: add ath11k to Makefile Kalle Valo
2019-11-15 9:29 ` [PATCH v3 48/49] ath: add ath11k to Kconfig Kalle Valo
2019-11-15 9:29 ` [PATCH v3 49/49] MAINTAINERS: add ath11k Kalle Valo
2019-11-23 8:26 ` [PATCH v3 00/49] ath11k: driver for Qualcomm IEEE 802.11ax devices Kalle Valo
2019-11-25 12:31 ` Kalle Valo
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