104 lines
2.7 KiB
C
104 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
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<http://rt2x00.serialmonkey.com>
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*/
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/*
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Module: rt2x00mmio
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Abstract: Data structures for the rt2x00mmio module.
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*/
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#ifndef RT2X00MMIO_H
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#define RT2X00MMIO_H
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#include <linux/io.h>
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/*
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* Register access.
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*/
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static inline u32 rt2x00mmio_register_read(struct rt2x00_dev *rt2x00dev,
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const unsigned int offset)
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{
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return readl(rt2x00dev->csr.base + offset);
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}
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static inline void rt2x00mmio_register_multiread(struct rt2x00_dev *rt2x00dev,
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const unsigned int offset,
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void *value, const u32 length)
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{
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memcpy_fromio(value, rt2x00dev->csr.base + offset, length);
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}
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static inline void rt2x00mmio_register_write(struct rt2x00_dev *rt2x00dev,
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const unsigned int offset,
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u32 value)
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{
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writel(value, rt2x00dev->csr.base + offset);
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}
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static inline void rt2x00mmio_register_multiwrite(struct rt2x00_dev *rt2x00dev,
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const unsigned int offset,
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const void *value,
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const u32 length)
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{
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__iowrite32_copy(rt2x00dev->csr.base + offset, value, length >> 2);
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}
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/**
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* rt2x00mmio_regbusy_read - Read from register with busy check
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* @rt2x00dev: Device pointer, see &struct rt2x00_dev.
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* @offset: Register offset
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* @field: Field to check if register is busy
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* @reg: Pointer to where register contents should be stored
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*
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* This function will read the given register, and checks if the
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* register is busy. If it is, it will sleep for a couple of
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* microseconds before reading the register again. If the register
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* is not read after a certain timeout, this function will return
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* FALSE.
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*/
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int rt2x00mmio_regbusy_read(struct rt2x00_dev *rt2x00dev,
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const unsigned int offset,
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const struct rt2x00_field32 field,
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u32 *reg);
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/**
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* struct queue_entry_priv_mmio: Per entry PCI specific information
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*
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* @desc: Pointer to device descriptor
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* @desc_dma: DMA pointer to &desc.
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*/
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struct queue_entry_priv_mmio {
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__le32 *desc;
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dma_addr_t desc_dma;
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};
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/**
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* rt2x00mmio_rxdone - Handle RX done events
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* @rt2x00dev: Device pointer, see &struct rt2x00_dev.
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*
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* Returns true if there are still rx frames pending and false if all
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* pending rx frames were processed.
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*/
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bool rt2x00mmio_rxdone(struct rt2x00_dev *rt2x00dev);
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/**
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* rt2x00mmio_flush_queue - Flush data queue
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* @queue: Data queue to stop
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* @drop: True to drop all pending frames.
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*
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* This will wait for a maximum of 100ms, waiting for the queues
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* to become empty.
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*/
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void rt2x00mmio_flush_queue(struct data_queue *queue, bool drop);
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/*
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* Device initialization handlers.
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*/
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int rt2x00mmio_initialize(struct rt2x00_dev *rt2x00dev);
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void rt2x00mmio_uninitialize(struct rt2x00_dev *rt2x00dev);
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#endif /* RT2X00MMIO_H */
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