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69a2bac8 GJ |
1 | /* |
2 | Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com> | |
3 | <http://rt2x00.serialmonkey.com> | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
a05b8c58 | 16 | along with this program; if not, see <http://www.gnu.org/licenses/>. |
69a2bac8 GJ |
17 | */ |
18 | ||
19 | /* | |
20 | Module: rt2x00mmio | |
21 | Abstract: Data structures for the rt2x00mmio module. | |
22 | */ | |
23 | ||
24 | #ifndef RT2X00MMIO_H | |
25 | #define RT2X00MMIO_H | |
26 | ||
27 | #include <linux/io.h> | |
28 | ||
29 | /* | |
30 | * Register access. | |
31 | */ | |
58959bdc GJ |
32 | static inline void rt2x00mmio_register_read(struct rt2x00_dev *rt2x00dev, |
33 | const unsigned int offset, | |
34 | u32 *value) | |
69a2bac8 GJ |
35 | { |
36 | *value = readl(rt2x00dev->csr.base + offset); | |
37 | } | |
38 | ||
58959bdc GJ |
39 | static inline void rt2x00mmio_register_multiread(struct rt2x00_dev *rt2x00dev, |
40 | const unsigned int offset, | |
41 | void *value, const u32 length) | |
69a2bac8 GJ |
42 | { |
43 | memcpy_fromio(value, rt2x00dev->csr.base + offset, length); | |
44 | } | |
45 | ||
58959bdc GJ |
46 | static inline void rt2x00mmio_register_write(struct rt2x00_dev *rt2x00dev, |
47 | const unsigned int offset, | |
48 | u32 value) | |
69a2bac8 GJ |
49 | { |
50 | writel(value, rt2x00dev->csr.base + offset); | |
51 | } | |
52 | ||
58959bdc GJ |
53 | static inline void rt2x00mmio_register_multiwrite(struct rt2x00_dev *rt2x00dev, |
54 | const unsigned int offset, | |
55 | const void *value, | |
56 | const u32 length) | |
69a2bac8 GJ |
57 | { |
58 | __iowrite32_copy(rt2x00dev->csr.base + offset, value, length >> 2); | |
59 | } | |
60 | ||
61 | /** | |
58959bdc | 62 | * rt2x00mmio_regbusy_read - Read from register with busy check |
69a2bac8 GJ |
63 | * @rt2x00dev: Device pointer, see &struct rt2x00_dev. |
64 | * @offset: Register offset | |
65 | * @field: Field to check if register is busy | |
66 | * @reg: Pointer to where register contents should be stored | |
67 | * | |
68 | * This function will read the given register, and checks if the | |
69 | * register is busy. If it is, it will sleep for a couple of | |
70 | * microseconds before reading the register again. If the register | |
71 | * is not read after a certain timeout, this function will return | |
72 | * FALSE. | |
73 | */ | |
58959bdc GJ |
74 | int rt2x00mmio_regbusy_read(struct rt2x00_dev *rt2x00dev, |
75 | const unsigned int offset, | |
76 | const struct rt2x00_field32 field, | |
77 | u32 *reg); | |
69a2bac8 GJ |
78 | |
79 | /** | |
58959bdc | 80 | * struct queue_entry_priv_mmio: Per entry PCI specific information |
69a2bac8 GJ |
81 | * |
82 | * @desc: Pointer to device descriptor | |
83 | * @desc_dma: DMA pointer to &desc. | |
84 | * @data: Pointer to device's entry memory. | |
85 | * @data_dma: DMA pointer to &data. | |
86 | */ | |
58959bdc | 87 | struct queue_entry_priv_mmio { |
69a2bac8 GJ |
88 | __le32 *desc; |
89 | dma_addr_t desc_dma; | |
90 | }; | |
91 | ||
92 | /** | |
58959bdc | 93 | * rt2x00mmio_rxdone - Handle RX done events |
69a2bac8 GJ |
94 | * @rt2x00dev: Device pointer, see &struct rt2x00_dev. |
95 | * | |
96 | * Returns true if there are still rx frames pending and false if all | |
97 | * pending rx frames were processed. | |
98 | */ | |
58959bdc | 99 | bool rt2x00mmio_rxdone(struct rt2x00_dev *rt2x00dev); |
69a2bac8 GJ |
100 | |
101 | /** | |
58959bdc | 102 | * rt2x00mmio_flush_queue - Flush data queue |
69a2bac8 GJ |
103 | * @queue: Data queue to stop |
104 | * @drop: True to drop all pending frames. | |
105 | * | |
106 | * This will wait for a maximum of 100ms, waiting for the queues | |
107 | * to become empty. | |
108 | */ | |
58959bdc | 109 | void rt2x00mmio_flush_queue(struct data_queue *queue, bool drop); |
69a2bac8 GJ |
110 | |
111 | /* | |
112 | * Device initialization handlers. | |
113 | */ | |
58959bdc | 114 | int rt2x00mmio_initialize(struct rt2x00_dev *rt2x00dev); |
58959bdc | 115 | void rt2x00mmio_uninitialize(struct rt2x00_dev *rt2x00dev); |
69a2bac8 GJ |
116 | |
117 | #endif /* RT2X00MMIO_H */ |