From 52409fae3e4b8d16b68b61902fc09075cd97b75d Mon Sep 17 00:00:00 2001
From: Dominik Sliwa <dominik.sliwa@toradex.com>
Date: Sun, 2 Jul 2017 16:41:37 +0200
Subject: Backports generated from 4.11 kernel

Initial commit.

Signed-off-by: Dominik Sliwa <dominik.sliwa@toradex.com>
---
 drivers/net/wireless/ralink/rt2x00/rt2x00mmio.h | 117 ++++++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100644 drivers/net/wireless/ralink/rt2x00/rt2x00mmio.h

(limited to 'drivers/net/wireless/ralink/rt2x00/rt2x00mmio.h')

diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00mmio.h b/drivers/net/wireless/ralink/rt2x00/rt2x00mmio.h
new file mode 100644
index 0000000..701c312
--- /dev/null
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00mmio.h
@@ -0,0 +1,117 @@
+/*
+	Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
+	<http://rt2x00.serialmonkey.com>
+
+	This program is free software; you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation; either version 2 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+	Module: rt2x00mmio
+	Abstract: Data structures for the rt2x00mmio module.
+ */
+
+#ifndef RT2X00MMIO_H
+#define RT2X00MMIO_H
+
+#include <linux/io.h>
+
+/*
+ * Register access.
+ */
+static inline void rt2x00mmio_register_read(struct rt2x00_dev *rt2x00dev,
+					    const unsigned int offset,
+					    u32 *value)
+{
+	*value = readl(rt2x00dev->csr.base + offset);
+}
+
+static inline void rt2x00mmio_register_multiread(struct rt2x00_dev *rt2x00dev,
+						 const unsigned int offset,
+						 void *value, const u32 length)
+{
+	memcpy_fromio(value, rt2x00dev->csr.base + offset, length);
+}
+
+static inline void rt2x00mmio_register_write(struct rt2x00_dev *rt2x00dev,
+					     const unsigned int offset,
+					     u32 value)
+{
+	writel(value, rt2x00dev->csr.base + offset);
+}
+
+static inline void rt2x00mmio_register_multiwrite(struct rt2x00_dev *rt2x00dev,
+						  const unsigned int offset,
+						  const void *value,
+						  const u32 length)
+{
+	__iowrite32_copy(rt2x00dev->csr.base + offset, value, length >> 2);
+}
+
+/**
+ * rt2x00mmio_regbusy_read - Read from register with busy check
+ * @rt2x00dev: Device pointer, see &struct rt2x00_dev.
+ * @offset: Register offset
+ * @field: Field to check if register is busy
+ * @reg: Pointer to where register contents should be stored
+ *
+ * This function will read the given register, and checks if the
+ * register is busy. If it is, it will sleep for a couple of
+ * microseconds before reading the register again. If the register
+ * is not read after a certain timeout, this function will return
+ * FALSE.
+ */
+int rt2x00mmio_regbusy_read(struct rt2x00_dev *rt2x00dev,
+			    const unsigned int offset,
+			    const struct rt2x00_field32 field,
+			    u32 *reg);
+
+/**
+ * struct queue_entry_priv_mmio: Per entry PCI specific information
+ *
+ * @desc: Pointer to device descriptor
+ * @desc_dma: DMA pointer to &desc.
+ * @data: Pointer to device's entry memory.
+ * @data_dma: DMA pointer to &data.
+ */
+struct queue_entry_priv_mmio {
+	__le32 *desc;
+	dma_addr_t desc_dma;
+};
+
+/**
+ * rt2x00mmio_rxdone - Handle RX done events
+ * @rt2x00dev: Device pointer, see &struct rt2x00_dev.
+ *
+ * Returns true if there are still rx frames pending and false if all
+ * pending rx frames were processed.
+ */
+bool rt2x00mmio_rxdone(struct rt2x00_dev *rt2x00dev);
+
+/**
+ * rt2x00mmio_flush_queue - Flush data queue
+ * @queue: Data queue to stop
+ * @drop: True to drop all pending frames.
+ *
+ * This will wait for a maximum of 100ms, waiting for the queues
+ * to become empty.
+ */
+void rt2x00mmio_flush_queue(struct data_queue *queue, bool drop);
+
+/*
+ * Device initialization handlers.
+ */
+int rt2x00mmio_initialize(struct rt2x00_dev *rt2x00dev);
+void rt2x00mmio_uninitialize(struct rt2x00_dev *rt2x00dev);
+
+#endif /* RT2X00MMIO_H */
-- 
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