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Diffstat (limited to 'drivers/net/wireless/ath/ath10k/ce.c')
-rw-r--r--drivers/net/wireless/ath/ath10k/ce.c2035
1 files changed, 2035 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath10k/ce.c b/drivers/net/wireless/ath/ath10k/ce.c
new file mode 100644
index 000000000..59926227b
--- /dev/null
+++ b/drivers/net/wireless/ath/ath10k/ce.c
@@ -0,0 +1,2035 @@
+// SPDX-License-Identifier: ISC
+/*
+ * Copyright (c) 2005-2011 Atheros Communications Inc.
+ * Copyright (c) 2011-2017 Qualcomm Atheros, Inc.
+ * Copyright (c) 2018 The Linux Foundation. All rights reserved.
+ */
+
+#include "hif.h"
+#include "ce.h"
+#include "debug.h"
+
+/*
+ * Support for Copy Engine hardware, which is mainly used for
+ * communication between Host and Target over a PCIe interconnect.
+ */
+
+/*
+ * A single CopyEngine (CE) comprises two "rings":
+ * a source ring
+ * a destination ring
+ *
+ * Each ring consists of a number of descriptors which specify
+ * an address, length, and meta-data.
+ *
+ * Typically, one side of the PCIe/AHB/SNOC interconnect (Host or Target)
+ * controls one ring and the other side controls the other ring.
+ * The source side chooses when to initiate a transfer and it
+ * chooses what to send (buffer address, length). The destination
+ * side keeps a supply of "anonymous receive buffers" available and
+ * it handles incoming data as it arrives (when the destination
+ * receives an interrupt).
+ *
+ * The sender may send a simple buffer (address/length) or it may
+ * send a small list of buffers. When a small list is sent, hardware
+ * "gathers" these and they end up in a single destination buffer
+ * with a single interrupt.
+ *
+ * There are several "contexts" managed by this layer -- more, it
+ * may seem -- than should be needed. These are provided mainly for
+ * maximum flexibility and especially to facilitate a simpler HIF
+ * implementation. There are per-CopyEngine recv, send, and watermark
+ * contexts. These are supplied by the caller when a recv, send,
+ * or watermark handler is established and they are echoed back to
+ * the caller when the respective callbacks are invoked. There is
+ * also a per-transfer context supplied by the caller when a buffer
+ * (or sendlist) is sent and when a buffer is enqueued for recv.
+ * These per-transfer contexts are echoed back to the caller when
+ * the buffer is sent/received.
+ */
+
+static inline u32 shadow_sr_wr_ind_addr(struct ath10k *ar,
+ struct ath10k_ce_pipe *ce_state)
+{
+ u32 ce_id = ce_state->id;
+ u32 addr = 0;
+
+ switch (ce_id) {
+ case 0:
+ addr = 0x00032000;
+ break;
+ case 3:
+ addr = 0x0003200C;
+ break;
+ case 4:
+ addr = 0x00032010;
+ break;
+ case 5:
+ addr = 0x00032014;
+ break;
+ case 7:
+ addr = 0x0003201C;
+ break;
+ default:
+ ath10k_warn(ar, "invalid CE id: %d", ce_id);
+ break;
+ }
+ return addr;
+}
+
+static inline u32 shadow_dst_wr_ind_addr(struct ath10k *ar,
+ struct ath10k_ce_pipe *ce_state)
+{
+ u32 ce_id = ce_state->id;
+ u32 addr = 0;
+
+ switch (ce_id) {
+ case 1:
+ addr = 0x00032034;
+ break;
+ case 2:
+ addr = 0x00032038;
+ break;
+ case 5:
+ addr = 0x00032044;
+ break;
+ case 7:
+ addr = 0x0003204C;
+ break;
+ case 8:
+ addr = 0x00032050;
+ break;
+ case 9:
+ addr = 0x00032054;
+ break;
+ case 10:
+ addr = 0x00032058;
+ break;
+ case 11:
+ addr = 0x0003205C;
+ break;
+ default:
+ ath10k_warn(ar, "invalid CE id: %d", ce_id);
+ break;
+ }
+
+ return addr;
+}
+
+static inline unsigned int
+ath10k_set_ring_byte(unsigned int offset,
+ struct ath10k_hw_ce_regs_addr_map *addr_map)
+{
+ return ((offset << addr_map->lsb) & addr_map->mask);
+}
+
+static inline unsigned int
+ath10k_get_ring_byte(unsigned int offset,
+ struct ath10k_hw_ce_regs_addr_map *addr_map)
+{
+ return ((offset & addr_map->mask) >> (addr_map->lsb));
+}
+
+static inline u32 ath10k_ce_read32(struct ath10k *ar, u32 offset)
+{
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+
+ return ce->bus_ops->read32(ar, offset);
+}
+
+static inline void ath10k_ce_write32(struct ath10k *ar, u32 offset, u32 value)
+{
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+
+ ce->bus_ops->write32(ar, offset, value);
+}
+
+static inline void ath10k_ce_dest_ring_write_index_set(struct ath10k *ar,
+ u32 ce_ctrl_addr,
+ unsigned int n)
+{
+ ath10k_ce_write32(ar, ce_ctrl_addr +
+ ar->hw_ce_regs->dst_wr_index_addr, n);
+}
+
+static inline u32 ath10k_ce_dest_ring_write_index_get(struct ath10k *ar,
+ u32 ce_ctrl_addr)
+{
+ return ath10k_ce_read32(ar, ce_ctrl_addr +
+ ar->hw_ce_regs->dst_wr_index_addr);
+}
+
+static inline void ath10k_ce_src_ring_write_index_set(struct ath10k *ar,
+ u32 ce_ctrl_addr,
+ unsigned int n)
+{
+ ath10k_ce_write32(ar, ce_ctrl_addr +
+ ar->hw_ce_regs->sr_wr_index_addr, n);
+}
+
+static inline u32 ath10k_ce_src_ring_write_index_get(struct ath10k *ar,
+ u32 ce_ctrl_addr)
+{
+ return ath10k_ce_read32(ar, ce_ctrl_addr +
+ ar->hw_ce_regs->sr_wr_index_addr);
+}
+
+static inline u32 ath10k_ce_src_ring_read_index_from_ddr(struct ath10k *ar,
+ u32 ce_id)
+{
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+
+ return ce->vaddr_rri[ce_id] & CE_DDR_RRI_MASK;
+}
+
+static inline u32 ath10k_ce_src_ring_read_index_get(struct ath10k *ar,
+ u32 ce_ctrl_addr)
+{
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ u32 ce_id = COPY_ENGINE_ID(ce_ctrl_addr);
+ struct ath10k_ce_pipe *ce_state = &ce->ce_states[ce_id];
+ u32 index;
+
+ if (ar->hw_params.rri_on_ddr &&
+ (ce_state->attr_flags & CE_ATTR_DIS_INTR))
+ index = ath10k_ce_src_ring_read_index_from_ddr(ar, ce_id);
+ else
+ index = ath10k_ce_read32(ar, ce_ctrl_addr +
+ ar->hw_ce_regs->current_srri_addr);
+
+ return index;
+}
+
+static inline void
+ath10k_ce_shadow_src_ring_write_index_set(struct ath10k *ar,
+ struct ath10k_ce_pipe *ce_state,
+ unsigned int value)
+{
+ ath10k_ce_write32(ar, shadow_sr_wr_ind_addr(ar, ce_state), value);
+}
+
+static inline void
+ath10k_ce_shadow_dest_ring_write_index_set(struct ath10k *ar,
+ struct ath10k_ce_pipe *ce_state,
+ unsigned int value)
+{
+ ath10k_ce_write32(ar, shadow_dst_wr_ind_addr(ar, ce_state), value);
+}
+
+static inline void ath10k_ce_src_ring_base_addr_set(struct ath10k *ar,
+ u32 ce_id,
+ u64 addr)
+{
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ struct ath10k_ce_pipe *ce_state = &ce->ce_states[ce_id];
+ u32 ce_ctrl_addr = ath10k_ce_base_address(ar, ce_id);
+ u32 addr_lo = lower_32_bits(addr);
+
+ ath10k_ce_write32(ar, ce_ctrl_addr +
+ ar->hw_ce_regs->sr_base_addr_lo, addr_lo);
+
+ if (ce_state->ops->ce_set_src_ring_base_addr_hi) {
+ ce_state->ops->ce_set_src_ring_base_addr_hi(ar, ce_ctrl_addr,
+ addr);
+ }
+}
+
+static void ath10k_ce_set_src_ring_base_addr_hi(struct ath10k *ar,
+ u32 ce_ctrl_addr,
+ u64 addr)
+{
+ u32 addr_hi = upper_32_bits(addr) & CE_DESC_ADDR_HI_MASK;
+
+ ath10k_ce_write32(ar, ce_ctrl_addr +
+ ar->hw_ce_regs->sr_base_addr_hi, addr_hi);
+}
+
+static inline void ath10k_ce_src_ring_size_set(struct ath10k *ar,
+ u32 ce_ctrl_addr,
+ unsigned int n)
+{
+ ath10k_ce_write32(ar, ce_ctrl_addr +
+ ar->hw_ce_regs->sr_size_addr, n);
+}
+
+static inline void ath10k_ce_src_ring_dmax_set(struct ath10k *ar,
+ u32 ce_ctrl_addr,
+ unsigned int n)
+{
+ struct ath10k_hw_ce_ctrl1 *ctrl_regs = ar->hw_ce_regs->ctrl1_regs;
+
+ u32 ctrl1_addr = ath10k_ce_read32(ar, ce_ctrl_addr +
+ ctrl_regs->addr);
+
+ ath10k_ce_write32(ar, ce_ctrl_addr + ctrl_regs->addr,
+ (ctrl1_addr & ~(ctrl_regs->dmax->mask)) |
+ ath10k_set_ring_byte(n, ctrl_regs->dmax));
+}
+
+static inline void ath10k_ce_src_ring_byte_swap_set(struct ath10k *ar,
+ u32 ce_ctrl_addr,
+ unsigned int n)
+{
+ struct ath10k_hw_ce_ctrl1 *ctrl_regs = ar->hw_ce_regs->ctrl1_regs;
+
+ u32 ctrl1_addr = ath10k_ce_read32(ar, ce_ctrl_addr +
+ ctrl_regs->addr);
+
+ ath10k_ce_write32(ar, ce_ctrl_addr + ctrl_regs->addr,
+ (ctrl1_addr & ~(ctrl_regs->src_ring->mask)) |
+ ath10k_set_ring_byte(n, ctrl_regs->src_ring));
+}
+
+static inline void ath10k_ce_dest_ring_byte_swap_set(struct ath10k *ar,
+ u32 ce_ctrl_addr,
+ unsigned int n)
+{
+ struct ath10k_hw_ce_ctrl1 *ctrl_regs = ar->hw_ce_regs->ctrl1_regs;
+
+ u32 ctrl1_addr = ath10k_ce_read32(ar, ce_ctrl_addr +
+ ctrl_regs->addr);
+
+ ath10k_ce_write32(ar, ce_ctrl_addr + ctrl_regs->addr,
+ (ctrl1_addr & ~(ctrl_regs->dst_ring->mask)) |
+ ath10k_set_ring_byte(n, ctrl_regs->dst_ring));
+}
+
+static inline
+ u32 ath10k_ce_dest_ring_read_index_from_ddr(struct ath10k *ar, u32 ce_id)
+{
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+
+ return (ce->vaddr_rri[ce_id] >> CE_DDR_DRRI_SHIFT) &
+ CE_DDR_RRI_MASK;
+}
+
+static inline u32 ath10k_ce_dest_ring_read_index_get(struct ath10k *ar,
+ u32 ce_ctrl_addr)
+{
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ u32 ce_id = COPY_ENGINE_ID(ce_ctrl_addr);
+ struct ath10k_ce_pipe *ce_state = &ce->ce_states[ce_id];
+ u32 index;
+
+ if (ar->hw_params.rri_on_ddr &&
+ (ce_state->attr_flags & CE_ATTR_DIS_INTR))
+ index = ath10k_ce_dest_ring_read_index_from_ddr(ar, ce_id);
+ else
+ index = ath10k_ce_read32(ar, ce_ctrl_addr +
+ ar->hw_ce_regs->current_drri_addr);
+
+ return index;
+}
+
+static inline void ath10k_ce_dest_ring_base_addr_set(struct ath10k *ar,
+ u32 ce_id,
+ u64 addr)
+{
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ struct ath10k_ce_pipe *ce_state = &ce->ce_states[ce_id];
+ u32 ce_ctrl_addr = ath10k_ce_base_address(ar, ce_id);
+ u32 addr_lo = lower_32_bits(addr);
+
+ ath10k_ce_write32(ar, ce_ctrl_addr +
+ ar->hw_ce_regs->dr_base_addr_lo, addr_lo);
+
+ if (ce_state->ops->ce_set_dest_ring_base_addr_hi) {
+ ce_state->ops->ce_set_dest_ring_base_addr_hi(ar, ce_ctrl_addr,
+ addr);
+ }
+}
+
+static void ath10k_ce_set_dest_ring_base_addr_hi(struct ath10k *ar,
+ u32 ce_ctrl_addr,
+ u64 addr)
+{
+ u32 addr_hi = upper_32_bits(addr) & CE_DESC_ADDR_HI_MASK;
+ u32 reg_value;
+
+ reg_value = ath10k_ce_read32(ar, ce_ctrl_addr +
+ ar->hw_ce_regs->dr_base_addr_hi);
+ reg_value &= ~CE_DESC_ADDR_HI_MASK;
+ reg_value |= addr_hi;
+ ath10k_ce_write32(ar, ce_ctrl_addr +
+ ar->hw_ce_regs->dr_base_addr_hi, reg_value);
+}
+
+static inline void ath10k_ce_dest_ring_size_set(struct ath10k *ar,
+ u32 ce_ctrl_addr,
+ unsigned int n)
+{
+ ath10k_ce_write32(ar, ce_ctrl_addr +
+ ar->hw_ce_regs->dr_size_addr, n);
+}
+
+static inline void ath10k_ce_src_ring_highmark_set(struct ath10k *ar,
+ u32 ce_ctrl_addr,
+ unsigned int n)
+{
+ struct ath10k_hw_ce_dst_src_wm_regs *srcr_wm = ar->hw_ce_regs->wm_srcr;
+ u32 addr = ath10k_ce_read32(ar, ce_ctrl_addr + srcr_wm->addr);
+
+ ath10k_ce_write32(ar, ce_ctrl_addr + srcr_wm->addr,
+ (addr & ~(srcr_wm->wm_high->mask)) |
+ (ath10k_set_ring_byte(n, srcr_wm->wm_high)));
+}
+
+static inline void ath10k_ce_src_ring_lowmark_set(struct ath10k *ar,
+ u32 ce_ctrl_addr,
+ unsigned int n)
+{
+ struct ath10k_hw_ce_dst_src_wm_regs *srcr_wm = ar->hw_ce_regs->wm_srcr;
+ u32 addr = ath10k_ce_read32(ar, ce_ctrl_addr + srcr_wm->addr);
+
+ ath10k_ce_write32(ar, ce_ctrl_addr + srcr_wm->addr,
+ (addr & ~(srcr_wm->wm_low->mask)) |
+ (ath10k_set_ring_byte(n, srcr_wm->wm_low)));
+}
+
+static inline void ath10k_ce_dest_ring_highmark_set(struct ath10k *ar,
+ u32 ce_ctrl_addr,
+ unsigned int n)
+{
+ struct ath10k_hw_ce_dst_src_wm_regs *dstr_wm = ar->hw_ce_regs->wm_dstr;
+ u32 addr = ath10k_ce_read32(ar, ce_ctrl_addr + dstr_wm->addr);
+
+ ath10k_ce_write32(ar, ce_ctrl_addr + dstr_wm->addr,
+ (addr & ~(dstr_wm->wm_high->mask)) |
+ (ath10k_set_ring_byte(n, dstr_wm->wm_high)));
+}
+
+static inline void ath10k_ce_dest_ring_lowmark_set(struct ath10k *ar,
+ u32 ce_ctrl_addr,
+ unsigned int n)
+{
+ struct ath10k_hw_ce_dst_src_wm_regs *dstr_wm = ar->hw_ce_regs->wm_dstr;
+ u32 addr = ath10k_ce_read32(ar, ce_ctrl_addr + dstr_wm->addr);
+
+ ath10k_ce_write32(ar, ce_ctrl_addr + dstr_wm->addr,
+ (addr & ~(dstr_wm->wm_low->mask)) |
+ (ath10k_set_ring_byte(n, dstr_wm->wm_low)));
+}
+
+static inline void ath10k_ce_copy_complete_inter_enable(struct ath10k *ar,
+ u32 ce_ctrl_addr)
+{
+ struct ath10k_hw_ce_host_ie *host_ie = ar->hw_ce_regs->host_ie;
+
+ u32 host_ie_addr = ath10k_ce_read32(ar, ce_ctrl_addr +
+ ar->hw_ce_regs->host_ie_addr);
+
+ ath10k_ce_write32(ar, ce_ctrl_addr + ar->hw_ce_regs->host_ie_addr,
+ host_ie_addr | host_ie->copy_complete->mask);
+}
+
+static inline void ath10k_ce_copy_complete_intr_disable(struct ath10k *ar,
+ u32 ce_ctrl_addr)
+{
+ struct ath10k_hw_ce_host_ie *host_ie = ar->hw_ce_regs->host_ie;
+
+ u32 host_ie_addr = ath10k_ce_read32(ar, ce_ctrl_addr +
+ ar->hw_ce_regs->host_ie_addr);
+
+ ath10k_ce_write32(ar, ce_ctrl_addr + ar->hw_ce_regs->host_ie_addr,
+ host_ie_addr & ~(host_ie->copy_complete->mask));
+}
+
+static inline void ath10k_ce_watermark_intr_disable(struct ath10k *ar,
+ u32 ce_ctrl_addr)
+{
+ struct ath10k_hw_ce_host_wm_regs *wm_regs = ar->hw_ce_regs->wm_regs;
+
+ u32 host_ie_addr = ath10k_ce_read32(ar, ce_ctrl_addr +
+ ar->hw_ce_regs->host_ie_addr);
+
+ ath10k_ce_write32(ar, ce_ctrl_addr + ar->hw_ce_regs->host_ie_addr,
+ host_ie_addr & ~(wm_regs->wm_mask));
+}
+
+static inline void ath10k_ce_error_intr_enable(struct ath10k *ar,
+ u32 ce_ctrl_addr)
+{
+ struct ath10k_hw_ce_misc_regs *misc_regs = ar->hw_ce_regs->misc_regs;
+
+ u32 misc_ie_addr = ath10k_ce_read32(ar, ce_ctrl_addr +
+ ar->hw_ce_regs->misc_ie_addr);
+
+ ath10k_ce_write32(ar,
+ ce_ctrl_addr + ar->hw_ce_regs->misc_ie_addr,
+ misc_ie_addr | misc_regs->err_mask);
+}
+
+static inline void ath10k_ce_error_intr_disable(struct ath10k *ar,
+ u32 ce_ctrl_addr)
+{
+ struct ath10k_hw_ce_misc_regs *misc_regs = ar->hw_ce_regs->misc_regs;
+
+ u32 misc_ie_addr = ath10k_ce_read32(ar,
+ ce_ctrl_addr + ar->hw_ce_regs->misc_ie_addr);
+
+ ath10k_ce_write32(ar,
+ ce_ctrl_addr + ar->hw_ce_regs->misc_ie_addr,
+ misc_ie_addr & ~(misc_regs->err_mask));
+}
+
+static inline void ath10k_ce_engine_int_status_clear(struct ath10k *ar,
+ u32 ce_ctrl_addr,
+ unsigned int mask)
+{
+ struct ath10k_hw_ce_host_wm_regs *wm_regs = ar->hw_ce_regs->wm_regs;
+
+ ath10k_ce_write32(ar, ce_ctrl_addr + wm_regs->addr, mask);
+}
+
+/*
+ * Guts of ath10k_ce_send.
+ * The caller takes responsibility for any needed locking.
+ */
+static int _ath10k_ce_send_nolock(struct ath10k_ce_pipe *ce_state,
+ void *per_transfer_context,
+ dma_addr_t buffer,
+ unsigned int nbytes,
+ unsigned int transfer_id,
+ unsigned int flags)
+{
+ struct ath10k *ar = ce_state->ar;
+ struct ath10k_ce_ring *src_ring = ce_state->src_ring;
+ struct ce_desc *desc, sdesc;
+ unsigned int nentries_mask = src_ring->nentries_mask;
+ unsigned int sw_index = src_ring->sw_index;
+ unsigned int write_index = src_ring->write_index;
+ u32 ctrl_addr = ce_state->ctrl_addr;
+ u32 desc_flags = 0;
+ int ret = 0;
+
+ if (nbytes > ce_state->src_sz_max)
+ ath10k_warn(ar, "%s: send more we can (nbytes: %d, max: %d)\n",
+ __func__, nbytes, ce_state->src_sz_max);
+
+ if (unlikely(CE_RING_DELTA(nentries_mask,
+ write_index, sw_index - 1) <= 0)) {
+ ret = -ENOSR;
+ goto exit;
+ }
+
+ desc = CE_SRC_RING_TO_DESC(src_ring->base_addr_owner_space,
+ write_index);
+
+ desc_flags |= SM(transfer_id, CE_DESC_FLAGS_META_DATA);
+
+ if (flags & CE_SEND_FLAG_GATHER)
+ desc_flags |= CE_DESC_FLAGS_GATHER;
+ if (flags & CE_SEND_FLAG_BYTE_SWAP)
+ desc_flags |= CE_DESC_FLAGS_BYTE_SWAP;
+
+ sdesc.addr = __cpu_to_le32(buffer);
+ sdesc.nbytes = __cpu_to_le16(nbytes);
+ sdesc.flags = __cpu_to_le16(desc_flags);
+
+ *desc = sdesc;
+
+ src_ring->per_transfer_context[write_index] = per_transfer_context;
+
+ /* Update Source Ring Write Index */
+ write_index = CE_RING_IDX_INCR(nentries_mask, write_index);
+
+ /* WORKAROUND */
+ if (!(flags & CE_SEND_FLAG_GATHER))
+ ath10k_ce_src_ring_write_index_set(ar, ctrl_addr, write_index);
+
+ src_ring->write_index = write_index;
+exit:
+ return ret;
+}
+
+static int _ath10k_ce_send_nolock_64(struct ath10k_ce_pipe *ce_state,
+ void *per_transfer_context,
+ dma_addr_t buffer,
+ unsigned int nbytes,
+ unsigned int transfer_id,
+ unsigned int flags)
+{
+ struct ath10k *ar = ce_state->ar;
+ struct ath10k_ce_ring *src_ring = ce_state->src_ring;
+ struct ce_desc_64 *desc, sdesc;
+ unsigned int nentries_mask = src_ring->nentries_mask;
+ unsigned int sw_index;
+ unsigned int write_index = src_ring->write_index;
+ u32 ctrl_addr = ce_state->ctrl_addr;
+ __le32 *addr;
+ u32 desc_flags = 0;
+ int ret = 0;
+
+ if (test_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags))
+ return -ESHUTDOWN;
+
+ if (nbytes > ce_state->src_sz_max)
+ ath10k_warn(ar, "%s: send more we can (nbytes: %d, max: %d)\n",
+ __func__, nbytes, ce_state->src_sz_max);
+
+ if (ar->hw_params.rri_on_ddr)
+ sw_index = ath10k_ce_src_ring_read_index_from_ddr(ar, ce_state->id);
+ else
+ sw_index = src_ring->sw_index;
+
+ if (unlikely(CE_RING_DELTA(nentries_mask,
+ write_index, sw_index - 1) <= 0)) {
+ ret = -ENOSR;
+ goto exit;
+ }
+
+ desc = CE_SRC_RING_TO_DESC_64(src_ring->base_addr_owner_space,
+ write_index);
+
+ desc_flags |= SM(transfer_id, CE_DESC_FLAGS_META_DATA);
+
+ if (flags & CE_SEND_FLAG_GATHER)
+ desc_flags |= CE_DESC_FLAGS_GATHER;
+
+ if (flags & CE_SEND_FLAG_BYTE_SWAP)
+ desc_flags |= CE_DESC_FLAGS_BYTE_SWAP;
+
+ addr = (__le32 *)&sdesc.addr;
+
+ flags |= upper_32_bits(buffer) & CE_DESC_ADDR_HI_MASK;
+ addr[0] = __cpu_to_le32(buffer);
+ addr[1] = __cpu_to_le32(flags);
+ if (flags & CE_SEND_FLAG_GATHER)
+ addr[1] |= __cpu_to_le32(CE_WCN3990_DESC_FLAGS_GATHER);
+ else
+ addr[1] &= ~(__cpu_to_le32(CE_WCN3990_DESC_FLAGS_GATHER));
+
+ sdesc.nbytes = __cpu_to_le16(nbytes);
+ sdesc.flags = __cpu_to_le16(desc_flags);
+
+ *desc = sdesc;
+
+ src_ring->per_transfer_context[write_index] = per_transfer_context;
+
+ /* Update Source Ring Write Index */
+ write_index = CE_RING_IDX_INCR(nentries_mask, write_index);
+
+ if (!(flags & CE_SEND_FLAG_GATHER)) {
+ if (ar->hw_params.shadow_reg_support)
+ ath10k_ce_shadow_src_ring_write_index_set(ar, ce_state,
+ write_index);
+ else
+ ath10k_ce_src_ring_write_index_set(ar, ctrl_addr,
+ write_index);
+ }
+
+ src_ring->write_index = write_index;
+exit:
+ return ret;
+}
+
+int ath10k_ce_send_nolock(struct ath10k_ce_pipe *ce_state,
+ void *per_transfer_context,
+ dma_addr_t buffer,
+ unsigned int nbytes,
+ unsigned int transfer_id,
+ unsigned int flags)
+{
+ return ce_state->ops->ce_send_nolock(ce_state, per_transfer_context,
+ buffer, nbytes, transfer_id, flags);
+}
+EXPORT_SYMBOL(ath10k_ce_send_nolock);
+
+void __ath10k_ce_send_revert(struct ath10k_ce_pipe *pipe)
+{
+ struct ath10k *ar = pipe->ar;
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ struct ath10k_ce_ring *src_ring = pipe->src_ring;
+ u32 ctrl_addr = pipe->ctrl_addr;
+
+ lockdep_assert_held(&ce->ce_lock);
+
+ /*
+ * This function must be called only if there is an incomplete
+ * scatter-gather transfer (before index register is updated)
+ * that needs to be cleaned up.
+ */
+ if (WARN_ON_ONCE(src_ring->write_index == src_ring->sw_index))
+ return;
+
+ if (WARN_ON_ONCE(src_ring->write_index ==
+ ath10k_ce_src_ring_write_index_get(ar, ctrl_addr)))
+ return;
+
+ src_ring->write_index--;
+ src_ring->write_index &= src_ring->nentries_mask;
+
+ src_ring->per_transfer_context[src_ring->write_index] = NULL;
+}
+EXPORT_SYMBOL(__ath10k_ce_send_revert);
+
+int ath10k_ce_send(struct ath10k_ce_pipe *ce_state,
+ void *per_transfer_context,
+ dma_addr_t buffer,
+ unsigned int nbytes,
+ unsigned int transfer_id,
+ unsigned int flags)
+{
+ struct ath10k *ar = ce_state->ar;
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ int ret;
+
+ spin_lock_bh(&ce->ce_lock);
+ ret = ath10k_ce_send_nolock(ce_state, per_transfer_context,
+ buffer, nbytes, transfer_id, flags);
+ spin_unlock_bh(&ce->ce_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL(ath10k_ce_send);
+
+int ath10k_ce_num_free_src_entries(struct ath10k_ce_pipe *pipe)
+{
+ struct ath10k *ar = pipe->ar;
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ int delta;
+
+ spin_lock_bh(&ce->ce_lock);
+ delta = CE_RING_DELTA(pipe->src_ring->nentries_mask,
+ pipe->src_ring->write_index,
+ pipe->src_ring->sw_index - 1);
+ spin_unlock_bh(&ce->ce_lock);
+
+ return delta;
+}
+EXPORT_SYMBOL(ath10k_ce_num_free_src_entries);
+
+int __ath10k_ce_rx_num_free_bufs(struct ath10k_ce_pipe *pipe)
+{
+ struct ath10k *ar = pipe->ar;
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ struct ath10k_ce_ring *dest_ring = pipe->dest_ring;
+ unsigned int nentries_mask = dest_ring->nentries_mask;
+ unsigned int write_index = dest_ring->write_index;
+ unsigned int sw_index = dest_ring->sw_index;
+
+ lockdep_assert_held(&ce->ce_lock);
+
+ return CE_RING_DELTA(nentries_mask, write_index, sw_index - 1);
+}
+EXPORT_SYMBOL(__ath10k_ce_rx_num_free_bufs);
+
+static int __ath10k_ce_rx_post_buf(struct ath10k_ce_pipe *pipe, void *ctx,
+ dma_addr_t paddr)
+{
+ struct ath10k *ar = pipe->ar;
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ struct ath10k_ce_ring *dest_ring = pipe->dest_ring;
+ unsigned int nentries_mask = dest_ring->nentries_mask;
+ unsigned int write_index = dest_ring->write_index;
+ unsigned int sw_index = dest_ring->sw_index;
+ struct ce_desc *base = dest_ring->base_addr_owner_space;
+ struct ce_desc *desc = CE_DEST_RING_TO_DESC(base, write_index);
+ u32 ctrl_addr = pipe->ctrl_addr;
+
+ lockdep_assert_held(&ce->ce_lock);
+
+ if ((pipe->id != 5) &&
+ CE_RING_DELTA(nentries_mask, write_index, sw_index - 1) == 0)
+ return -ENOSPC;
+
+ desc->addr = __cpu_to_le32(paddr);
+ desc->nbytes = 0;
+
+ dest_ring->per_transfer_context[write_index] = ctx;
+ write_index = CE_RING_IDX_INCR(nentries_mask, write_index);
+ ath10k_ce_dest_ring_write_index_set(ar, ctrl_addr, write_index);
+ dest_ring->write_index = write_index;
+
+ return 0;
+}
+
+static int __ath10k_ce_rx_post_buf_64(struct ath10k_ce_pipe *pipe,
+ void *ctx,
+ dma_addr_t paddr)
+{
+ struct ath10k *ar = pipe->ar;
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ struct ath10k_ce_ring *dest_ring = pipe->dest_ring;
+ unsigned int nentries_mask = dest_ring->nentries_mask;
+ unsigned int write_index = dest_ring->write_index;
+ unsigned int sw_index = dest_ring->sw_index;
+ struct ce_desc_64 *base = dest_ring->base_addr_owner_space;
+ struct ce_desc_64 *desc =
+ CE_DEST_RING_TO_DESC_64(base, write_index);
+ u32 ctrl_addr = pipe->ctrl_addr;
+
+ lockdep_assert_held(&ce->ce_lock);
+
+ if (CE_RING_DELTA(nentries_mask, write_index, sw_index - 1) == 0)
+ return -ENOSPC;
+
+ desc->addr = __cpu_to_le64(paddr);
+ desc->addr &= __cpu_to_le64(CE_DESC_ADDR_MASK);
+
+ desc->nbytes = 0;
+
+ dest_ring->per_transfer_context[write_index] = ctx;
+ write_index = CE_RING_IDX_INCR(nentries_mask, write_index);
+ ath10k_ce_dest_ring_write_index_set(ar, ctrl_addr, write_index);
+ dest_ring->write_index = write_index;
+
+ return 0;
+}
+
+void ath10k_ce_rx_update_write_idx(struct ath10k_ce_pipe *pipe, u32 nentries)
+{
+ struct ath10k *ar = pipe->ar;
+ struct ath10k_ce_ring *dest_ring = pipe->dest_ring;
+ unsigned int nentries_mask = dest_ring->nentries_mask;
+ unsigned int write_index = dest_ring->write_index;
+ u32 ctrl_addr = pipe->ctrl_addr;
+ u32 cur_write_idx = ath10k_ce_dest_ring_write_index_get(ar, ctrl_addr);
+
+ /* Prevent CE ring stuck issue that will occur when ring is full.
+ * Make sure that write index is 1 less than read index.
+ */
+ if (((cur_write_idx + nentries) & nentries_mask) == dest_ring->sw_index)
+ nentries -= 1;
+
+ write_index = CE_RING_IDX_ADD(nentries_mask, write_index, nentries);
+ ath10k_ce_dest_ring_write_index_set(ar, ctrl_addr, write_index);
+ dest_ring->write_index = write_index;
+}
+EXPORT_SYMBOL(ath10k_ce_rx_update_write_idx);
+
+int ath10k_ce_rx_post_buf(struct ath10k_ce_pipe *pipe, void *ctx,
+ dma_addr_t paddr)
+{
+ struct ath10k *ar = pipe->ar;
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ int ret;
+
+ spin_lock_bh(&ce->ce_lock);
+ ret = pipe->ops->ce_rx_post_buf(pipe, ctx, paddr);
+ spin_unlock_bh(&ce->ce_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL(ath10k_ce_rx_post_buf);
+
+/*
+ * Guts of ath10k_ce_completed_recv_next.
+ * The caller takes responsibility for any necessary locking.
+ */
+static int
+ _ath10k_ce_completed_recv_next_nolock(struct ath10k_ce_pipe *ce_state,
+ void **per_transfer_contextp,
+ unsigned int *nbytesp)
+{
+ struct ath10k_ce_ring *dest_ring = ce_state->dest_ring;
+ unsigned int nentries_mask = dest_ring->nentries_mask;
+ unsigned int sw_index = dest_ring->sw_index;
+
+ struct ce_desc *base = dest_ring->base_addr_owner_space;
+ struct ce_desc *desc = CE_DEST_RING_TO_DESC(base, sw_index);
+ struct ce_desc sdesc;
+ u16 nbytes;
+
+ /* Copy in one go for performance reasons */
+ sdesc = *desc;
+
+ nbytes = __le16_to_cpu(sdesc.nbytes);
+ if (nbytes == 0) {
+ /*
+ * This closes a relatively unusual race where the Host
+ * sees the updated DRRI before the update to the
+ * corresponding descriptor has completed. We treat this
+ * as a descriptor that is not yet done.
+ */
+ return -EIO;
+ }
+
+ desc->nbytes = 0;
+
+ /* Return data from completed destination descriptor */
+ *nbytesp = nbytes;
+
+ if (per_transfer_contextp)
+ *per_transfer_contextp =
+ dest_ring->per_transfer_context[sw_index];
+
+ /* Copy engine 5 (HTT Rx) will reuse the same transfer context.
+ * So update transfer context all CEs except CE5.
+ */
+ if (ce_state->id != 5)
+ dest_ring->per_transfer_context[sw_index] = NULL;
+
+ /* Update sw_index */
+ sw_index = CE_RING_IDX_INCR(nentries_mask, sw_index);
+ dest_ring->sw_index = sw_index;
+
+ return 0;
+}
+
+static int
+_ath10k_ce_completed_recv_next_nolock_64(struct ath10k_ce_pipe *ce_state,
+ void **per_transfer_contextp,
+ unsigned int *nbytesp)
+{
+ struct ath10k_ce_ring *dest_ring = ce_state->dest_ring;
+ unsigned int nentries_mask = dest_ring->nentries_mask;
+ unsigned int sw_index = dest_ring->sw_index;
+ struct ce_desc_64 *base = dest_ring->base_addr_owner_space;
+ struct ce_desc_64 *desc =
+ CE_DEST_RING_TO_DESC_64(base, sw_index);
+ struct ce_desc_64 sdesc;
+ u16 nbytes;
+
+ /* Copy in one go for performance reasons */
+ sdesc = *desc;
+
+ nbytes = __le16_to_cpu(sdesc.nbytes);
+ if (nbytes == 0) {
+ /* This closes a relatively unusual race where the Host
+ * sees the updated DRRI before the update to the
+ * corresponding descriptor has completed. We treat this
+ * as a descriptor that is not yet done.
+ */
+ return -EIO;
+ }
+
+ desc->nbytes = 0;
+
+ /* Return data from completed destination descriptor */
+ *nbytesp = nbytes;
+
+ if (per_transfer_contextp)
+ *per_transfer_contextp =
+ dest_ring->per_transfer_context[sw_index];
+
+ /* Copy engine 5 (HTT Rx) will reuse the same transfer context.
+ * So update transfer context all CEs except CE5.
+ */
+ if (ce_state->id != 5)
+ dest_ring->per_transfer_context[sw_index] = NULL;
+
+ /* Update sw_index */
+ sw_index = CE_RING_IDX_INCR(nentries_mask, sw_index);
+ dest_ring->sw_index = sw_index;
+
+ return 0;
+}
+
+int ath10k_ce_completed_recv_next_nolock(struct ath10k_ce_pipe *ce_state,
+ void **per_transfer_ctx,
+ unsigned int *nbytesp)
+{
+ return ce_state->ops->ce_completed_recv_next_nolock(ce_state,
+ per_transfer_ctx,
+ nbytesp);
+}
+EXPORT_SYMBOL(ath10k_ce_completed_recv_next_nolock);
+
+int ath10k_ce_completed_recv_next(struct ath10k_ce_pipe *ce_state,
+ void **per_transfer_contextp,
+ unsigned int *nbytesp)
+{
+ struct ath10k *ar = ce_state->ar;
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ int ret;
+
+ spin_lock_bh(&ce->ce_lock);
+ ret = ce_state->ops->ce_completed_recv_next_nolock(ce_state,
+ per_transfer_contextp,
+ nbytesp);
+
+ spin_unlock_bh(&ce->ce_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL(ath10k_ce_completed_recv_next);
+
+static int _ath10k_ce_revoke_recv_next(struct ath10k_ce_pipe *ce_state,
+ void **per_transfer_contextp,
+ dma_addr_t *bufferp)
+{
+ struct ath10k_ce_ring *dest_ring;
+ unsigned int nentries_mask;
+ unsigned int sw_index;
+ unsigned int write_index;
+ int ret;
+ struct ath10k *ar;
+ struct ath10k_ce *ce;
+
+ dest_ring = ce_state->dest_ring;
+
+ if (!dest_ring)
+ return -EIO;
+
+ ar = ce_state->ar;
+ ce = ath10k_ce_priv(ar);
+
+ spin_lock_bh(&ce->ce_lock);
+
+ nentries_mask = dest_ring->nentries_mask;
+ sw_index = dest_ring->sw_index;
+ write_index = dest_ring->write_index;
+ if (write_index != sw_index) {
+ struct ce_desc *base = dest_ring->base_addr_owner_space;
+ struct ce_desc *desc = CE_DEST_RING_TO_DESC(base, sw_index);
+
+ /* Return data from completed destination descriptor */
+ *bufferp = __le32_to_cpu(desc->addr);
+
+ if (per_transfer_contextp)
+ *per_transfer_contextp =
+ dest_ring->per_transfer_context[sw_index];
+
+ /* sanity */
+ dest_ring->per_transfer_context[sw_index] = NULL;
+ desc->nbytes = 0;
+
+ /* Update sw_index */
+ sw_index = CE_RING_IDX_INCR(nentries_mask, sw_index);
+ dest_ring->sw_index = sw_index;
+ ret = 0;
+ } else {
+ ret = -EIO;
+ }
+
+ spin_unlock_bh(&ce->ce_lock);
+
+ return ret;
+}
+
+static int _ath10k_ce_revoke_recv_next_64(struct ath10k_ce_pipe *ce_state,
+ void **per_transfer_contextp,
+ dma_addr_t *bufferp)
+{
+ struct ath10k_ce_ring *dest_ring;
+ unsigned int nentries_mask;
+ unsigned int sw_index;
+ unsigned int write_index;
+ int ret;
+ struct ath10k *ar;
+ struct ath10k_ce *ce;
+
+ dest_ring = ce_state->dest_ring;
+
+ if (!dest_ring)
+ return -EIO;
+
+ ar = ce_state->ar;
+ ce = ath10k_ce_priv(ar);
+
+ spin_lock_bh(&ce->ce_lock);
+
+ nentries_mask = dest_ring->nentries_mask;
+ sw_index = dest_ring->sw_index;
+ write_index = dest_ring->write_index;
+ if (write_index != sw_index) {
+ struct ce_desc_64 *base = dest_ring->base_addr_owner_space;
+ struct ce_desc_64 *desc =
+ CE_DEST_RING_TO_DESC_64(base, sw_index);
+
+ /* Return data from completed destination descriptor */
+ *bufferp = __le64_to_cpu(desc->addr);
+
+ if (per_transfer_contextp)
+ *per_transfer_contextp =
+ dest_ring->per_transfer_context[sw_index];
+
+ /* sanity */
+ dest_ring->per_transfer_context[sw_index] = NULL;
+ desc->nbytes = 0;
+
+ /* Update sw_index */
+ sw_index = CE_RING_IDX_INCR(nentries_mask, sw_index);
+ dest_ring->sw_index = sw_index;
+ ret = 0;
+ } else {
+ ret = -EIO;
+ }
+
+ spin_unlock_bh(&ce->ce_lock);
+
+ return ret;
+}
+
+int ath10k_ce_revoke_recv_next(struct ath10k_ce_pipe *ce_state,
+ void **per_transfer_contextp,
+ dma_addr_t *bufferp)
+{
+ return ce_state->ops->ce_revoke_recv_next(ce_state,
+ per_transfer_contextp,
+ bufferp);
+}
+EXPORT_SYMBOL(ath10k_ce_revoke_recv_next);
+
+/*
+ * Guts of ath10k_ce_completed_send_next.
+ * The caller takes responsibility for any necessary locking.
+ */
+static int _ath10k_ce_completed_send_next_nolock(struct ath10k_ce_pipe *ce_state,
+ void **per_transfer_contextp)
+{
+ struct ath10k_ce_ring *src_ring = ce_state->src_ring;
+ u32 ctrl_addr = ce_state->ctrl_addr;
+ struct ath10k *ar = ce_state->ar;
+ unsigned int nentries_mask = src_ring->nentries_mask;
+ unsigned int sw_index = src_ring->sw_index;
+ unsigned int read_index;
+ struct ce_desc *desc;
+
+ if (src_ring->hw_index == sw_index) {
+ /*
+ * The SW completion index has caught up with the cached
+ * version of the HW completion index.
+ * Update the cached HW completion index to see whether
+ * the SW has really caught up to the HW, or if the cached
+ * value of the HW index has become stale.
+ */
+
+ read_index = ath10k_ce_src_ring_read_index_get(ar, ctrl_addr);
+ if (read_index == 0xffffffff)
+ return -ENODEV;
+
+ read_index &= nentries_mask;
+ src_ring->hw_index = read_index;
+ }
+
+ if (ar->hw_params.rri_on_ddr)
+ read_index = ath10k_ce_src_ring_read_index_get(ar, ctrl_addr);
+ else
+ read_index = src_ring->hw_index;
+
+ if (read_index == sw_index)
+ return -EIO;
+
+ if (per_transfer_contextp)
+ *per_transfer_contextp =
+ src_ring->per_transfer_context[sw_index];
+
+ /* sanity */
+ src_ring->per_transfer_context[sw_index] = NULL;
+ desc = CE_SRC_RING_TO_DESC(src_ring->base_addr_owner_space,
+ sw_index);
+ desc->nbytes = 0;
+
+ /* Update sw_index */
+ sw_index = CE_RING_IDX_INCR(nentries_mask, sw_index);
+ src_ring->sw_index = sw_index;
+
+ return 0;
+}
+
+static int _ath10k_ce_completed_send_next_nolock_64(struct ath10k_ce_pipe *ce_state,
+ void **per_transfer_contextp)
+{
+ struct ath10k_ce_ring *src_ring = ce_state->src_ring;
+ u32 ctrl_addr = ce_state->ctrl_addr;
+ struct ath10k *ar = ce_state->ar;
+ unsigned int nentries_mask = src_ring->nentries_mask;
+ unsigned int sw_index = src_ring->sw_index;
+ unsigned int read_index;
+ struct ce_desc_64 *desc;
+
+ if (src_ring->hw_index == sw_index) {
+ /*
+ * The SW completion index has caught up with the cached
+ * version of the HW completion index.
+ * Update the cached HW completion index to see whether
+ * the SW has really caught up to the HW, or if the cached
+ * value of the HW index has become stale.
+ */
+
+ read_index = ath10k_ce_src_ring_read_index_get(ar, ctrl_addr);
+ if (read_index == 0xffffffff)
+ return -ENODEV;
+
+ read_index &= nentries_mask;
+ src_ring->hw_index = read_index;
+ }
+
+ if (ar->hw_params.rri_on_ddr)
+ read_index = ath10k_ce_src_ring_read_index_get(ar, ctrl_addr);
+ else
+ read_index = src_ring->hw_index;
+
+ if (read_index == sw_index)
+ return -EIO;
+
+ if (per_transfer_contextp)
+ *per_transfer_contextp =
+ src_ring->per_transfer_context[sw_index];
+
+ /* sanity */
+ src_ring->per_transfer_context[sw_index] = NULL;
+ desc = CE_SRC_RING_TO_DESC_64(src_ring->base_addr_owner_space,
+ sw_index);
+ desc->nbytes = 0;
+
+ /* Update sw_index */
+ sw_index = CE_RING_IDX_INCR(nentries_mask, sw_index);
+ src_ring->sw_index = sw_index;
+
+ return 0;
+}
+
+int ath10k_ce_completed_send_next_nolock(struct ath10k_ce_pipe *ce_state,
+ void **per_transfer_contextp)
+{
+ return ce_state->ops->ce_completed_send_next_nolock(ce_state,
+ per_transfer_contextp);
+}
+EXPORT_SYMBOL(ath10k_ce_completed_send_next_nolock);
+
+static void ath10k_ce_extract_desc_data(struct ath10k *ar,
+ struct ath10k_ce_ring *src_ring,
+ u32 sw_index,
+ dma_addr_t *bufferp,
+ u32 *nbytesp,
+ u32 *transfer_idp)
+{
+ struct ce_desc *base = src_ring->base_addr_owner_space;
+ struct ce_desc *desc = CE_SRC_RING_TO_DESC(base, sw_index);
+
+ /* Return data from completed source descriptor */
+ *bufferp = __le32_to_cpu(desc->addr);
+ *nbytesp = __le16_to_cpu(desc->nbytes);
+ *transfer_idp = MS(__le16_to_cpu(desc->flags),
+ CE_DESC_FLAGS_META_DATA);
+}
+
+static void ath10k_ce_extract_desc_data_64(struct ath10k *ar,
+ struct ath10k_ce_ring *src_ring,
+ u32 sw_index,
+ dma_addr_t *bufferp,
+ u32 *nbytesp,
+ u32 *transfer_idp)
+{
+ struct ce_desc_64 *base = src_ring->base_addr_owner_space;
+ struct ce_desc_64 *desc =
+ CE_SRC_RING_TO_DESC_64(base, sw_index);
+
+ /* Return data from completed source descriptor */
+ *bufferp = __le64_to_cpu(desc->addr);
+ *nbytesp = __le16_to_cpu(desc->nbytes);
+ *transfer_idp = MS(__le16_to_cpu(desc->flags),
+ CE_DESC_FLAGS_META_DATA);
+}
+
+/* NB: Modeled after ath10k_ce_completed_send_next */
+int ath10k_ce_cancel_send_next(struct ath10k_ce_pipe *ce_state,
+ void **per_transfer_contextp,
+ dma_addr_t *bufferp,
+ unsigned int *nbytesp,
+ unsigned int *transfer_idp)
+{
+ struct ath10k_ce_ring *src_ring;
+ unsigned int nentries_mask;
+ unsigned int sw_index;
+ unsigned int write_index;
+ int ret;
+ struct ath10k *ar;
+ struct ath10k_ce *ce;
+
+ src_ring = ce_state->src_ring;
+
+ if (!src_ring)
+ return -EIO;
+
+ ar = ce_state->ar;
+ ce = ath10k_ce_priv(ar);
+
+ spin_lock_bh(&ce->ce_lock);
+
+ nentries_mask = src_ring->nentries_mask;
+ sw_index = src_ring->sw_index;
+ write_index = src_ring->write_index;
+
+ if (write_index != sw_index) {
+ ce_state->ops->ce_extract_desc_data(ar, src_ring, sw_index,
+ bufferp, nbytesp,
+ transfer_idp);
+
+ if (per_transfer_contextp)
+ *per_transfer_contextp =
+ src_ring->per_transfer_context[sw_index];
+
+ /* sanity */
+ src_ring->per_transfer_context[sw_index] = NULL;
+
+ /* Update sw_index */
+ sw_index = CE_RING_IDX_INCR(nentries_mask, sw_index);
+ src_ring->sw_index = sw_index;
+ ret = 0;
+ } else {
+ ret = -EIO;
+ }
+
+ spin_unlock_bh(&ce->ce_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL(ath10k_ce_cancel_send_next);
+
+int ath10k_ce_completed_send_next(struct ath10k_ce_pipe *ce_state,
+ void **per_transfer_contextp)
+{
+ struct ath10k *ar = ce_state->ar;
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ int ret;
+
+ spin_lock_bh(&ce->ce_lock);
+ ret = ath10k_ce_completed_send_next_nolock(ce_state,
+ per_transfer_contextp);
+ spin_unlock_bh(&ce->ce_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL(ath10k_ce_completed_send_next);
+
+/*
+ * Guts of interrupt handler for per-engine interrupts on a particular CE.
+ *
+ * Invokes registered callbacks for recv_complete,
+ * send_complete, and watermarks.
+ */
+void ath10k_ce_per_engine_service(struct ath10k *ar, unsigned int ce_id)
+{
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ struct ath10k_ce_pipe *ce_state = &ce->ce_states[ce_id];
+ struct ath10k_hw_ce_host_wm_regs *wm_regs = ar->hw_ce_regs->wm_regs;
+ u32 ctrl_addr = ce_state->ctrl_addr;
+
+ /*
+ * Clear before handling
+ *
+ * Misc CE interrupts are not being handled, but still need
+ * to be cleared.
+ *
+ * NOTE: When the last copy engine interrupt is cleared the
+ * hardware will go to sleep. Once this happens any access to
+ * the CE registers can cause a hardware fault.
+ */
+ ath10k_ce_engine_int_status_clear(ar, ctrl_addr,
+ wm_regs->cc_mask | wm_regs->wm_mask);
+
+ if (ce_state->recv_cb)
+ ce_state->recv_cb(ce_state);
+
+ if (ce_state->send_cb)
+ ce_state->send_cb(ce_state);
+}
+EXPORT_SYMBOL(ath10k_ce_per_engine_service);
+
+/*
+ * Handler for per-engine interrupts on ALL active CEs.
+ * This is used in cases where the system is sharing a
+ * single interrupt for all CEs
+ */
+
+void ath10k_ce_per_engine_service_any(struct ath10k *ar)
+{
+ int ce_id;
+ u32 intr_summary;
+
+ intr_summary = ath10k_ce_interrupt_summary(ar);
+
+ for (ce_id = 0; intr_summary && (ce_id < CE_COUNT); ce_id++) {
+ if (intr_summary & (1 << ce_id))
+ intr_summary &= ~(1 << ce_id);
+ else
+ /* no intr pending on this CE */
+ continue;
+
+ ath10k_ce_per_engine_service(ar, ce_id);
+ }
+}
+EXPORT_SYMBOL(ath10k_ce_per_engine_service_any);
+
+/*
+ * Adjust interrupts for the copy complete handler.
+ * If it's needed for either send or recv, then unmask
+ * this interrupt; otherwise, mask it.
+ *
+ * Called with ce_lock held.
+ */
+static void ath10k_ce_per_engine_handler_adjust(struct ath10k_ce_pipe *ce_state)
+{
+ u32 ctrl_addr = ce_state->ctrl_addr;
+ struct ath10k *ar = ce_state->ar;
+ bool disable_copy_compl_intr = ce_state->attr_flags & CE_ATTR_DIS_INTR;
+
+ if ((!disable_copy_compl_intr) &&
+ (ce_state->send_cb || ce_state->recv_cb))
+ ath10k_ce_copy_complete_inter_enable(ar, ctrl_addr);
+ else
+ ath10k_ce_copy_complete_intr_disable(ar, ctrl_addr);
+
+ ath10k_ce_watermark_intr_disable(ar, ctrl_addr);
+}
+
+void ath10k_ce_disable_interrupt(struct ath10k *ar, int ce_id)
+{
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ struct ath10k_ce_pipe *ce_state;
+ u32 ctrl_addr;
+
+ ce_state = &ce->ce_states[ce_id];
+ if (ce_state->attr_flags & CE_ATTR_POLL)
+ return;
+
+ ctrl_addr = ath10k_ce_base_address(ar, ce_id);
+
+ ath10k_ce_copy_complete_intr_disable(ar, ctrl_addr);
+ ath10k_ce_error_intr_disable(ar, ctrl_addr);
+ ath10k_ce_watermark_intr_disable(ar, ctrl_addr);
+}
+EXPORT_SYMBOL(ath10k_ce_disable_interrupt);
+
+void ath10k_ce_disable_interrupts(struct ath10k *ar)
+{
+ int ce_id;
+
+ for (ce_id = 0; ce_id < CE_COUNT; ce_id++)
+ ath10k_ce_disable_interrupt(ar, ce_id);
+}
+EXPORT_SYMBOL(ath10k_ce_disable_interrupts);
+
+void ath10k_ce_enable_interrupt(struct ath10k *ar, int ce_id)
+{
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ struct ath10k_ce_pipe *ce_state;
+
+ ce_state = &ce->ce_states[ce_id];
+ if (ce_state->attr_flags & CE_ATTR_POLL)
+ return;
+
+ ath10k_ce_per_engine_handler_adjust(ce_state);
+}
+EXPORT_SYMBOL(ath10k_ce_enable_interrupt);
+
+void ath10k_ce_enable_interrupts(struct ath10k *ar)
+{
+ int ce_id;
+
+ /* Enable interrupts for copy engine that
+ * are not using polling mode.
+ */
+ for (ce_id = 0; ce_id < CE_COUNT; ce_id++)
+ ath10k_ce_enable_interrupt(ar, ce_id);
+}
+EXPORT_SYMBOL(ath10k_ce_enable_interrupts);
+
+static int ath10k_ce_init_src_ring(struct ath10k *ar,
+ unsigned int ce_id,
+ const struct ce_attr *attr)
+{
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ struct ath10k_ce_pipe *ce_state = &ce->ce_states[ce_id];
+ struct ath10k_ce_ring *src_ring = ce_state->src_ring;
+ u32 nentries, ctrl_addr = ath10k_ce_base_address(ar, ce_id);
+
+ nentries = roundup_pow_of_two(attr->src_nentries);
+
+ if (ar->hw_params.target_64bit)
+ memset(src_ring->base_addr_owner_space, 0,
+ nentries * sizeof(struct ce_desc_64));
+ else
+ memset(src_ring->base_addr_owner_space, 0,
+ nentries * sizeof(struct ce_desc));
+
+ src_ring->sw_index = ath10k_ce_src_ring_read_index_get(ar, ctrl_addr);
+ src_ring->sw_index &= src_ring->nentries_mask;
+ src_ring->hw_index = src_ring->sw_index;
+
+ src_ring->write_index =
+ ath10k_ce_src_ring_write_index_get(ar, ctrl_addr);
+ src_ring->write_index &= src_ring->nentries_mask;
+
+ ath10k_ce_src_ring_base_addr_set(ar, ce_id,
+ src_ring->base_addr_ce_space);
+ ath10k_ce_src_ring_size_set(ar, ctrl_addr, nentries);
+ ath10k_ce_src_ring_dmax_set(ar, ctrl_addr, attr->src_sz_max);
+ ath10k_ce_src_ring_byte_swap_set(ar, ctrl_addr, 0);
+ ath10k_ce_src_ring_lowmark_set(ar, ctrl_addr, 0);
+ ath10k_ce_src_ring_highmark_set(ar, ctrl_addr, nentries);
+
+ ath10k_dbg(ar, ATH10K_DBG_BOOT,
+ "boot init ce src ring id %d entries %d base_addr %pK\n",
+ ce_id, nentries, src_ring->base_addr_owner_space);
+
+ return 0;
+}
+
+static int ath10k_ce_init_dest_ring(struct ath10k *ar,
+ unsigned int ce_id,
+ const struct ce_attr *attr)
+{
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ struct ath10k_ce_pipe *ce_state = &ce->ce_states[ce_id];
+ struct ath10k_ce_ring *dest_ring = ce_state->dest_ring;
+ u32 nentries, ctrl_addr = ath10k_ce_base_address(ar, ce_id);
+
+ nentries = roundup_pow_of_two(attr->dest_nentries);
+
+ if (ar->hw_params.target_64bit)
+ memset(dest_ring->base_addr_owner_space, 0,
+ nentries * sizeof(struct ce_desc_64));
+ else
+ memset(dest_ring->base_addr_owner_space, 0,
+ nentries * sizeof(struct ce_desc));
+
+ dest_ring->sw_index = ath10k_ce_dest_ring_read_index_get(ar, ctrl_addr);
+ dest_ring->sw_index &= dest_ring->nentries_mask;
+ dest_ring->write_index =
+ ath10k_ce_dest_ring_write_index_get(ar, ctrl_addr);
+ dest_ring->write_index &= dest_ring->nentries_mask;
+
+ ath10k_ce_dest_ring_base_addr_set(ar, ce_id,
+ dest_ring->base_addr_ce_space);
+ ath10k_ce_dest_ring_size_set(ar, ctrl_addr, nentries);
+ ath10k_ce_dest_ring_byte_swap_set(ar, ctrl_addr, 0);
+ ath10k_ce_dest_ring_lowmark_set(ar, ctrl_addr, 0);
+ ath10k_ce_dest_ring_highmark_set(ar, ctrl_addr, nentries);
+
+ ath10k_dbg(ar, ATH10K_DBG_BOOT,
+ "boot ce dest ring id %d entries %d base_addr %pK\n",
+ ce_id, nentries, dest_ring->base_addr_owner_space);
+
+ return 0;
+}
+
+static int ath10k_ce_alloc_shadow_base(struct ath10k *ar,
+ struct ath10k_ce_ring *src_ring,
+ u32 nentries)
+{
+ src_ring->shadow_base_unaligned = kcalloc(nentries,
+ sizeof(struct ce_desc_64),
+ GFP_KERNEL);
+ if (!src_ring->shadow_base_unaligned)
+ return -ENOMEM;
+
+ src_ring->shadow_base = (struct ce_desc_64 *)
+ PTR_ALIGN(src_ring->shadow_base_unaligned,
+ CE_DESC_RING_ALIGN);
+ return 0;
+}
+
+static struct ath10k_ce_ring *
+ath10k_ce_alloc_src_ring(struct ath10k *ar, unsigned int ce_id,
+ const struct ce_attr *attr)
+{
+ struct ath10k_ce_ring *src_ring;
+ u32 nentries = attr->src_nentries;
+ dma_addr_t base_addr;
+ int ret;
+
+ nentries = roundup_pow_of_two(nentries);
+
+ src_ring = kzalloc(struct_size(src_ring, per_transfer_context,
+ nentries), GFP_KERNEL);
+ if (src_ring == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ src_ring->nentries = nentries;
+ src_ring->nentries_mask = nentries - 1;
+
+ /*
+ * Legacy platforms that do not support cache
+ * coherent DMA are unsupported
+ */
+ src_ring->base_addr_owner_space_unaligned =
+ dma_alloc_coherent(ar->dev,
+ (nentries * sizeof(struct ce_desc) +
+ CE_DESC_RING_ALIGN),
+ &base_addr, GFP_KERNEL);
+ if (!src_ring->base_addr_owner_space_unaligned) {
+ kfree(src_ring);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ src_ring->base_addr_ce_space_unaligned = base_addr;
+
+ src_ring->base_addr_owner_space =
+ PTR_ALIGN(src_ring->base_addr_owner_space_unaligned,
+ CE_DESC_RING_ALIGN);
+ src_ring->base_addr_ce_space =
+ ALIGN(src_ring->base_addr_ce_space_unaligned,
+ CE_DESC_RING_ALIGN);
+
+ if (ar->hw_params.shadow_reg_support) {
+ ret = ath10k_ce_alloc_shadow_base(ar, src_ring, nentries);
+ if (ret) {
+ dma_free_coherent(ar->dev,
+ (nentries * sizeof(struct ce_desc) +
+ CE_DESC_RING_ALIGN),
+ src_ring->base_addr_owner_space_unaligned,
+ base_addr);
+ kfree(src_ring);
+ return ERR_PTR(ret);
+ }
+ }
+
+ return src_ring;
+}
+
+static struct ath10k_ce_ring *
+ath10k_ce_alloc_src_ring_64(struct ath10k *ar, unsigned int ce_id,
+ const struct ce_attr *attr)
+{
+ struct ath10k_ce_ring *src_ring;
+ u32 nentries = attr->src_nentries;
+ dma_addr_t base_addr;
+ int ret;
+
+ nentries = roundup_pow_of_two(nentries);
+
+ src_ring = kzalloc(struct_size(src_ring, per_transfer_context,
+ nentries), GFP_KERNEL);
+ if (!src_ring)
+ return ERR_PTR(-ENOMEM);
+
+ src_ring->nentries = nentries;
+ src_ring->nentries_mask = nentries - 1;
+
+ /* Legacy platforms that do not support cache
+ * coherent DMA are unsupported
+ */
+ src_ring->base_addr_owner_space_unaligned =
+ dma_alloc_coherent(ar->dev,
+ (nentries * sizeof(struct ce_desc_64) +
+ CE_DESC_RING_ALIGN),
+ &base_addr, GFP_KERNEL);
+ if (!src_ring->base_addr_owner_space_unaligned) {
+ kfree(src_ring);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ src_ring->base_addr_ce_space_unaligned = base_addr;
+
+ src_ring->base_addr_owner_space =
+ PTR_ALIGN(src_ring->base_addr_owner_space_unaligned,
+ CE_DESC_RING_ALIGN);
+ src_ring->base_addr_ce_space =
+ ALIGN(src_ring->base_addr_ce_space_unaligned,
+ CE_DESC_RING_ALIGN);
+
+ if (ar->hw_params.shadow_reg_support) {
+ ret = ath10k_ce_alloc_shadow_base(ar, src_ring, nentries);
+ if (ret) {
+ dma_free_coherent(ar->dev,
+ (nentries * sizeof(struct ce_desc_64) +
+ CE_DESC_RING_ALIGN),
+ src_ring->base_addr_owner_space_unaligned,
+ base_addr);
+ kfree(src_ring);
+ return ERR_PTR(ret);
+ }
+ }
+
+ return src_ring;
+}
+
+static struct ath10k_ce_ring *
+ath10k_ce_alloc_dest_ring(struct ath10k *ar, unsigned int ce_id,
+ const struct ce_attr *attr)
+{
+ struct ath10k_ce_ring *dest_ring;
+ u32 nentries;
+ dma_addr_t base_addr;
+
+ nentries = roundup_pow_of_two(attr->dest_nentries);
+
+ dest_ring = kzalloc(struct_size(dest_ring, per_transfer_context,
+ nentries), GFP_KERNEL);
+ if (dest_ring == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ dest_ring->nentries = nentries;
+ dest_ring->nentries_mask = nentries - 1;
+
+ /*
+ * Legacy platforms that do not support cache
+ * coherent DMA are unsupported
+ */
+ dest_ring->base_addr_owner_space_unaligned =
+ dma_alloc_coherent(ar->dev,
+ (nentries * sizeof(struct ce_desc) +
+ CE_DESC_RING_ALIGN),
+ &base_addr, GFP_KERNEL);
+ if (!dest_ring->base_addr_owner_space_unaligned) {
+ kfree(dest_ring);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ dest_ring->base_addr_ce_space_unaligned = base_addr;
+
+ dest_ring->base_addr_owner_space =
+ PTR_ALIGN(dest_ring->base_addr_owner_space_unaligned,
+ CE_DESC_RING_ALIGN);
+ dest_ring->base_addr_ce_space =
+ ALIGN(dest_ring->base_addr_ce_space_unaligned,
+ CE_DESC_RING_ALIGN);
+
+ return dest_ring;
+}
+
+static struct ath10k_ce_ring *
+ath10k_ce_alloc_dest_ring_64(struct ath10k *ar, unsigned int ce_id,
+ const struct ce_attr *attr)
+{
+ struct ath10k_ce_ring *dest_ring;
+ u32 nentries;
+ dma_addr_t base_addr;
+
+ nentries = roundup_pow_of_two(attr->dest_nentries);
+
+ dest_ring = kzalloc(struct_size(dest_ring, per_transfer_context,
+ nentries), GFP_KERNEL);
+ if (!dest_ring)
+ return ERR_PTR(-ENOMEM);
+
+ dest_ring->nentries = nentries;
+ dest_ring->nentries_mask = nentries - 1;
+
+ /* Legacy platforms that do not support cache
+ * coherent DMA are unsupported
+ */
+ dest_ring->base_addr_owner_space_unaligned =
+ dma_alloc_coherent(ar->dev,
+ (nentries * sizeof(struct ce_desc_64) +
+ CE_DESC_RING_ALIGN),
+ &base_addr, GFP_KERNEL);
+ if (!dest_ring->base_addr_owner_space_unaligned) {
+ kfree(dest_ring);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ dest_ring->base_addr_ce_space_unaligned = base_addr;
+
+ /* Correctly initialize memory to 0 to prevent garbage
+ * data crashing system when download firmware
+ */
+ dest_ring->base_addr_owner_space =
+ PTR_ALIGN(dest_ring->base_addr_owner_space_unaligned,
+ CE_DESC_RING_ALIGN);
+ dest_ring->base_addr_ce_space =
+ ALIGN(dest_ring->base_addr_ce_space_unaligned,
+ CE_DESC_RING_ALIGN);
+
+ return dest_ring;
+}
+
+/*
+ * Initialize a Copy Engine based on caller-supplied attributes.
+ * This may be called once to initialize both source and destination
+ * rings or it may be called twice for separate source and destination
+ * initialization. It may be that only one side or the other is
+ * initialized by software/firmware.
+ */
+int ath10k_ce_init_pipe(struct ath10k *ar, unsigned int ce_id,
+ const struct ce_attr *attr)
+{
+ int ret;
+
+ if (attr->src_nentries) {
+ ret = ath10k_ce_init_src_ring(ar, ce_id, attr);
+ if (ret) {
+ ath10k_err(ar, "Failed to initialize CE src ring for ID: %d (%d)\n",
+ ce_id, ret);
+ return ret;
+ }
+ }
+
+ if (attr->dest_nentries) {
+ ret = ath10k_ce_init_dest_ring(ar, ce_id, attr);
+ if (ret) {
+ ath10k_err(ar, "Failed to initialize CE dest ring for ID: %d (%d)\n",
+ ce_id, ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(ath10k_ce_init_pipe);
+
+static void ath10k_ce_deinit_src_ring(struct ath10k *ar, unsigned int ce_id)
+{
+ u32 ctrl_addr = ath10k_ce_base_address(ar, ce_id);
+
+ ath10k_ce_src_ring_base_addr_set(ar, ce_id, 0);
+ ath10k_ce_src_ring_size_set(ar, ctrl_addr, 0);
+ ath10k_ce_src_ring_dmax_set(ar, ctrl_addr, 0);
+ ath10k_ce_src_ring_highmark_set(ar, ctrl_addr, 0);
+}
+
+static void ath10k_ce_deinit_dest_ring(struct ath10k *ar, unsigned int ce_id)
+{
+ u32 ctrl_addr = ath10k_ce_base_address(ar, ce_id);
+
+ ath10k_ce_dest_ring_base_addr_set(ar, ce_id, 0);
+ ath10k_ce_dest_ring_size_set(ar, ctrl_addr, 0);
+ ath10k_ce_dest_ring_highmark_set(ar, ctrl_addr, 0);
+}
+
+void ath10k_ce_deinit_pipe(struct ath10k *ar, unsigned int ce_id)
+{
+ ath10k_ce_deinit_src_ring(ar, ce_id);
+ ath10k_ce_deinit_dest_ring(ar, ce_id);
+}
+EXPORT_SYMBOL(ath10k_ce_deinit_pipe);
+
+static void _ath10k_ce_free_pipe(struct ath10k *ar, int ce_id)
+{
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ struct ath10k_ce_pipe *ce_state = &ce->ce_states[ce_id];
+
+ if (ce_state->src_ring) {
+ if (ar->hw_params.shadow_reg_support)
+ kfree(ce_state->src_ring->shadow_base_unaligned);
+ dma_free_coherent(ar->dev,
+ (ce_state->src_ring->nentries *
+ sizeof(struct ce_desc) +
+ CE_DESC_RING_ALIGN),
+ ce_state->src_ring->base_addr_owner_space,
+ ce_state->src_ring->base_addr_ce_space);
+ kfree(ce_state->src_ring);
+ }
+
+ if (ce_state->dest_ring) {
+ dma_free_coherent(ar->dev,
+ (ce_state->dest_ring->nentries *
+ sizeof(struct ce_desc) +
+ CE_DESC_RING_ALIGN),
+ ce_state->dest_ring->base_addr_owner_space,
+ ce_state->dest_ring->base_addr_ce_space);
+ kfree(ce_state->dest_ring);
+ }
+
+ ce_state->src_ring = NULL;
+ ce_state->dest_ring = NULL;
+}
+
+static void _ath10k_ce_free_pipe_64(struct ath10k *ar, int ce_id)
+{
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ struct ath10k_ce_pipe *ce_state = &ce->ce_states[ce_id];
+
+ if (ce_state->src_ring) {
+ if (ar->hw_params.shadow_reg_support)
+ kfree(ce_state->src_ring->shadow_base_unaligned);
+ dma_free_coherent(ar->dev,
+ (ce_state->src_ring->nentries *
+ sizeof(struct ce_desc_64) +
+ CE_DESC_RING_ALIGN),
+ ce_state->src_ring->base_addr_owner_space,
+ ce_state->src_ring->base_addr_ce_space);
+ kfree(ce_state->src_ring);
+ }
+
+ if (ce_state->dest_ring) {
+ dma_free_coherent(ar->dev,
+ (ce_state->dest_ring->nentries *
+ sizeof(struct ce_desc_64) +
+ CE_DESC_RING_ALIGN),
+ ce_state->dest_ring->base_addr_owner_space,
+ ce_state->dest_ring->base_addr_ce_space);
+ kfree(ce_state->dest_ring);
+ }
+
+ ce_state->src_ring = NULL;
+ ce_state->dest_ring = NULL;
+}
+
+void ath10k_ce_free_pipe(struct ath10k *ar, int ce_id)
+{
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ struct ath10k_ce_pipe *ce_state = &ce->ce_states[ce_id];
+
+ ce_state->ops->ce_free_pipe(ar, ce_id);
+}
+EXPORT_SYMBOL(ath10k_ce_free_pipe);
+
+void ath10k_ce_dump_registers(struct ath10k *ar,
+ struct ath10k_fw_crash_data *crash_data)
+{
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ struct ath10k_ce_crash_data ce_data;
+ u32 addr, id;
+
+ lockdep_assert_held(&ar->dump_mutex);
+
+ ath10k_err(ar, "Copy Engine register dump:\n");
+
+ spin_lock_bh(&ce->ce_lock);
+ for (id = 0; id < CE_COUNT; id++) {
+ addr = ath10k_ce_base_address(ar, id);
+ ce_data.base_addr = cpu_to_le32(addr);
+
+ ce_data.src_wr_idx =
+ cpu_to_le32(ath10k_ce_src_ring_write_index_get(ar, addr));
+ ce_data.src_r_idx =
+ cpu_to_le32(ath10k_ce_src_ring_read_index_get(ar, addr));
+ ce_data.dst_wr_idx =
+ cpu_to_le32(ath10k_ce_dest_ring_write_index_get(ar, addr));
+ ce_data.dst_r_idx =
+ cpu_to_le32(ath10k_ce_dest_ring_read_index_get(ar, addr));
+
+ if (crash_data)
+ crash_data->ce_crash_data[id] = ce_data;
+
+ ath10k_err(ar, "[%02d]: 0x%08x %3u %3u %3u %3u", id,
+ le32_to_cpu(ce_data.base_addr),
+ le32_to_cpu(ce_data.src_wr_idx),
+ le32_to_cpu(ce_data.src_r_idx),
+ le32_to_cpu(ce_data.dst_wr_idx),
+ le32_to_cpu(ce_data.dst_r_idx));
+ }
+
+ spin_unlock_bh(&ce->ce_lock);
+}
+EXPORT_SYMBOL(ath10k_ce_dump_registers);
+
+static const struct ath10k_ce_ops ce_ops = {
+ .ce_alloc_src_ring = ath10k_ce_alloc_src_ring,
+ .ce_alloc_dst_ring = ath10k_ce_alloc_dest_ring,
+ .ce_rx_post_buf = __ath10k_ce_rx_post_buf,
+ .ce_completed_recv_next_nolock = _ath10k_ce_completed_recv_next_nolock,
+ .ce_revoke_recv_next = _ath10k_ce_revoke_recv_next,
+ .ce_extract_desc_data = ath10k_ce_extract_desc_data,
+ .ce_free_pipe = _ath10k_ce_free_pipe,
+ .ce_send_nolock = _ath10k_ce_send_nolock,
+ .ce_set_src_ring_base_addr_hi = NULL,
+ .ce_set_dest_ring_base_addr_hi = NULL,
+ .ce_completed_send_next_nolock = _ath10k_ce_completed_send_next_nolock,
+};
+
+static const struct ath10k_ce_ops ce_64_ops = {
+ .ce_alloc_src_ring = ath10k_ce_alloc_src_ring_64,
+ .ce_alloc_dst_ring = ath10k_ce_alloc_dest_ring_64,
+ .ce_rx_post_buf = __ath10k_ce_rx_post_buf_64,
+ .ce_completed_recv_next_nolock =
+ _ath10k_ce_completed_recv_next_nolock_64,
+ .ce_revoke_recv_next = _ath10k_ce_revoke_recv_next_64,
+ .ce_extract_desc_data = ath10k_ce_extract_desc_data_64,
+ .ce_free_pipe = _ath10k_ce_free_pipe_64,
+ .ce_send_nolock = _ath10k_ce_send_nolock_64,
+ .ce_set_src_ring_base_addr_hi = ath10k_ce_set_src_ring_base_addr_hi,
+ .ce_set_dest_ring_base_addr_hi = ath10k_ce_set_dest_ring_base_addr_hi,
+ .ce_completed_send_next_nolock = _ath10k_ce_completed_send_next_nolock_64,
+};
+
+static void ath10k_ce_set_ops(struct ath10k *ar,
+ struct ath10k_ce_pipe *ce_state)
+{
+ switch (ar->hw_rev) {
+ case ATH10K_HW_WCN3990:
+ ce_state->ops = &ce_64_ops;
+ break;
+ default:
+ ce_state->ops = &ce_ops;
+ break;
+ }
+}
+
+int ath10k_ce_alloc_pipe(struct ath10k *ar, int ce_id,
+ const struct ce_attr *attr)
+{
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+ struct ath10k_ce_pipe *ce_state = &ce->ce_states[ce_id];
+ int ret;
+
+ ath10k_ce_set_ops(ar, ce_state);
+ /* Make sure there's enough CE ringbuffer entries for HTT TX to avoid
+ * additional TX locking checks.
+ *
+ * For the lack of a better place do the check here.
+ */
+ BUILD_BUG_ON(2 * TARGET_NUM_MSDU_DESC >
+ (CE_HTT_H2T_MSG_SRC_NENTRIES - 1));
+ BUILD_BUG_ON(2 * TARGET_10_4_NUM_MSDU_DESC_PFC >
+ (CE_HTT_H2T_MSG_SRC_NENTRIES - 1));
+ BUILD_BUG_ON(2 * TARGET_TLV_NUM_MSDU_DESC >
+ (CE_HTT_H2T_MSG_SRC_NENTRIES - 1));
+
+ ce_state->ar = ar;
+ ce_state->id = ce_id;
+ ce_state->ctrl_addr = ath10k_ce_base_address(ar, ce_id);
+ ce_state->attr_flags = attr->flags;
+ ce_state->src_sz_max = attr->src_sz_max;
+
+ if (attr->src_nentries)
+ ce_state->send_cb = attr->send_cb;
+
+ if (attr->dest_nentries)
+ ce_state->recv_cb = attr->recv_cb;
+
+ if (attr->src_nentries) {
+ ce_state->src_ring =
+ ce_state->ops->ce_alloc_src_ring(ar, ce_id, attr);
+ if (IS_ERR(ce_state->src_ring)) {
+ ret = PTR_ERR(ce_state->src_ring);
+ ath10k_err(ar, "failed to alloc CE src ring %d: %d\n",
+ ce_id, ret);
+ ce_state->src_ring = NULL;
+ return ret;
+ }
+ }
+
+ if (attr->dest_nentries) {
+ ce_state->dest_ring = ce_state->ops->ce_alloc_dst_ring(ar,
+ ce_id,
+ attr);
+ if (IS_ERR(ce_state->dest_ring)) {
+ ret = PTR_ERR(ce_state->dest_ring);
+ ath10k_err(ar, "failed to alloc CE dest ring %d: %d\n",
+ ce_id, ret);
+ ce_state->dest_ring = NULL;
+ return ret;
+ }
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(ath10k_ce_alloc_pipe);
+
+void ath10k_ce_alloc_rri(struct ath10k *ar)
+{
+ int i;
+ u32 value;
+ u32 ctrl1_regs;
+ u32 ce_base_addr;
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+
+ ce->vaddr_rri = dma_alloc_coherent(ar->dev,
+ (CE_COUNT * sizeof(u32)),
+ &ce->paddr_rri, GFP_KERNEL);
+
+ if (!ce->vaddr_rri)
+ return;
+
+ ath10k_ce_write32(ar, ar->hw_ce_regs->ce_rri_low,
+ lower_32_bits(ce->paddr_rri));
+ ath10k_ce_write32(ar, ar->hw_ce_regs->ce_rri_high,
+ (upper_32_bits(ce->paddr_rri) &
+ CE_DESC_ADDR_HI_MASK));
+
+ for (i = 0; i < CE_COUNT; i++) {
+ ctrl1_regs = ar->hw_ce_regs->ctrl1_regs->addr;
+ ce_base_addr = ath10k_ce_base_address(ar, i);
+ value = ath10k_ce_read32(ar, ce_base_addr + ctrl1_regs);
+ value |= ar->hw_ce_regs->upd->mask;
+ ath10k_ce_write32(ar, ce_base_addr + ctrl1_regs, value);
+ }
+}
+EXPORT_SYMBOL(ath10k_ce_alloc_rri);
+
+void ath10k_ce_free_rri(struct ath10k *ar)
+{
+ struct ath10k_ce *ce = ath10k_ce_priv(ar);
+
+ dma_free_coherent(ar->dev, (CE_COUNT * sizeof(u32)),
+ ce->vaddr_rri,
+ ce->paddr_rri);
+}
+EXPORT_SYMBOL(ath10k_ce_free_rri);