change wifi driver to cypress

hc

2024-01-05 071106ecf68c401173c58808b1cf5f68cc50d390

 kernel/drivers/net/wireless/ath/wil6210/pmc.c
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@@ -1,23 +1,13 @@
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+// SPDX-License-Identifier: ISC
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 /*
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  * Copyright (c) 2012-2015,2017 Qualcomm Atheros, Inc.
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  * Copyright (c) 2018, The Linux Foundation. All rights reserved.
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- *
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- * Permission to use, copy, modify, and/or distribute this software for any
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- * purpose with or without fee is hereby granted, provided that the above
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- * copyright notice and this permission notice appear in all copies.
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- *
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- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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  */
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 #include <linux/types.h>
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 #include <linux/errno.h>
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 #include <linux/fs.h>
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+#include <linux/seq_file.h>
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 #include "wmi.h"
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 #include "wil6210.h"
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 #include "txrx.h"
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@@ -39,8 +29,7 @@
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 	mutex_init(&wil->pmc.lock);
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 }
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-/**
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- * Allocate the physical ring (p-ring) and the required
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+/* Allocate the physical ring (p-ring) and the required
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  * number of descriptors of required size.
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  * Initialize the descriptors as required by pmc dma.
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  * The descriptors' buffers dwords are initialized to hold
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@@ -231,8 +220,7 @@
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 	mutex_unlock(&pmc->lock);
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 }
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-/**
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- * Traverse the p-ring and release all buffers.
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+/* Traverse the p-ring and release all buffers.
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  * At the end release the p-ring memory
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  */
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 void wil_pmc_free(struct wil6210_priv *wil, int send_pmc_cmd)
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@@ -309,8 +297,7 @@
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 	mutex_unlock(&pmc->lock);
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 }
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-/**
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- * Status of the last operation requested via debugfs: alloc/free/read.
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+/* Status of the last operation requested via debugfs: alloc/free/read.
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  * 0 - success or negative errno
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  */
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 int wil_pmc_last_cmd_status(struct wil6210_priv *wil)
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@@ -321,8 +308,7 @@
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 	return wil->pmc.last_cmd_status;
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 }
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-/**
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- * Read from required position up to the end of current descriptor,
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+/* Read from required position up to the end of current descriptor,
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  * depends on descriptor size configured during alloc request.
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  */
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 ssize_t wil_pmc_read(struct file *filp, char __user *buf, size_t count,
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@@ -431,3 +417,28 @@
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 	return newpos;
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 }
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+
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+int wil_pmcring_read(struct seq_file *s, void *data)
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+{
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+	struct wil6210_priv *wil = s->private;
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+	struct pmc_ctx *pmc = &wil->pmc;
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+	size_t pmc_ring_size =
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+		sizeof(struct vring_rx_desc) * pmc->num_descriptors;
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+
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+	mutex_lock(&pmc->lock);
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+
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+	if (!wil_is_pmc_allocated(pmc)) {
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+		wil_err(wil, "error, pmc is not allocated!\n");
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+		pmc->last_cmd_status = -EPERM;
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+		mutex_unlock(&pmc->lock);
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+		return -EPERM;
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+	}
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+
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+	wil_dbg_misc(wil, "pmcring_read: size %zu\n", pmc_ring_size);
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+
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+	seq_write(s, pmc->pring_va, pmc_ring_size);
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+
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+	mutex_unlock(&pmc->lock);
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+
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+	return 0;
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+}