1 files changed, 103 insertions, 0 deletions
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00mmio.h b/drivers/net/wireless/ralink/rt2x00/rt2x00mmio.h
new file mode 100644
index 000000000..9c7e31c45
--- /dev/null
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00mmio.h
@@ -0,0 +1,103 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+	Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
+	<http://rt2x00.serialmonkey.com>
+
+ */
+
+/*
+	Module: rt2x00mmio
+	Abstract: Data structures for the rt2x00mmio module.
+ */
+
+#ifndef RT2X00MMIO_H
+#define RT2X00MMIO_H
+
+#include <linux/io.h>
+
+/*
+ * Register access.
+ */
+static inline u32 rt2x00mmio_register_read(struct rt2x00_dev *rt2x00dev,
+					   const unsigned int offset)
+{
+	return 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.
+ */
+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 */