diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
commit | 57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch) | |
tree | 5e910f0e82173f4ef4f51111366a3f1299037a7b /drivers/net/wireless/rt2x00/rt2x00mmio.h |
Initial import
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00mmio.h')
-rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00mmio.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00mmio.h b/drivers/net/wireless/rt2x00/rt2x00mmio.h new file mode 100644 index 000000000..701c3127e --- /dev/null +++ b/drivers/net/wireless/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 */ |