/* 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, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Module: rt2x00pci Abstract: Data structures for the rt2x00pci module. */ #ifndef RT2X00PCI_H #define RT2X00PCI_H #include <linux/io.h> #include <linux/pci.h> /* * This variable should be used with the * pci_driver structure initialization. */ #define PCI_DEVICE_DATA(__ops) .driver_data = (kernel_ulong_t)(__ops) /* * Register access. */ static inline void rt2x00pci_register_read(struct rt2x00_dev *rt2x00dev, const unsigned int offset, u32 *value) { *value = readl(rt2x00dev->csr.base + offset); } static inline void rt2x00pci_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 rt2x00pci_register_write(struct rt2x00_dev *rt2x00dev, const unsigned int offset, u32 value) { writel(value, rt2x00dev->csr.base + offset); } static inline void rt2x00pci_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); } /** * rt2x00pci_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 rt2x00pci_regbusy_read(struct rt2x00_dev *rt2x00dev, const unsigned int offset, const struct rt2x00_field32 field, u32 *reg); /** * struct queue_entry_priv_pci: 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_pci { __le32 *desc; dma_addr_t desc_dma; }; /** * rt2x00pci_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 rt2x00pci_rxdone(struct rt2x00_dev *rt2x00dev); /** * rt2x00pci_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 rt2x00pci_flush_queue(struct data_queue *queue, bool drop); /* * Device initialization handlers. */ int rt2x00pci_initialize(struct rt2x00_dev *rt2x00dev); void rt2x00pci_uninitialize(struct rt2x00_dev *rt2x00dev); /* * PCI driver handlers. */ int rt2x00pci_probe(struct pci_dev *pci_dev, const struct rt2x00_ops *ops); void rt2x00pci_remove(struct pci_dev *pci_dev); #ifdef CONFIG_PM int rt2x00pci_suspend(struct pci_dev *pci_dev, pm_message_t state); int rt2x00pci_resume(struct pci_dev *pci_dev); #else #define rt2x00pci_suspend NULL #define rt2x00pci_resume NULL #endif /* CONFIG_PM */ #endif /* RT2X00PCI_H */