1 /*
2 * This file is part of wl1271
3 *
4 * Copyright (C) 1998-2009 Texas Instruments. All rights reserved.
5 * Copyright (C) 2008-2010 Nokia Corporation
6 *
7 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * version 2 as published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
21 * 02110-1301 USA
22 *
23 */
24
25 #ifndef __IO_H__
26 #define __IO_H__
27
28 #include "reg.h"
29
30 #define HW_ACCESS_MEMORY_MAX_RANGE 0x1FFC0
31
32 #define HW_PARTITION_REGISTERS_ADDR 0x1FFC0
33 #define HW_PART0_SIZE_ADDR (HW_PARTITION_REGISTERS_ADDR)
34 #define HW_PART0_START_ADDR (HW_PARTITION_REGISTERS_ADDR + 4)
35 #define HW_PART1_SIZE_ADDR (HW_PARTITION_REGISTERS_ADDR + 8)
36 #define HW_PART1_START_ADDR (HW_PARTITION_REGISTERS_ADDR + 12)
37 #define HW_PART2_SIZE_ADDR (HW_PARTITION_REGISTERS_ADDR + 16)
38 #define HW_PART2_START_ADDR (HW_PARTITION_REGISTERS_ADDR + 20)
39 #define HW_PART3_START_ADDR (HW_PARTITION_REGISTERS_ADDR + 24)
40
41 #define HW_ACCESS_REGISTER_SIZE 4
42
43 #define HW_ACCESS_PRAM_MAX_RANGE 0x3c000
44
45 struct wl1271;
46
47 void wl1271_disable_interrupts(struct wl1271 *wl);
48 void wl1271_enable_interrupts(struct wl1271 *wl);
49
50 void wl1271_io_reset(struct wl1271 *wl);
51 void wl1271_io_init(struct wl1271 *wl);
52
wl1271_wl_to_dev(struct wl1271 * wl)53 static inline struct device *wl1271_wl_to_dev(struct wl1271 *wl)
54 {
55 return wl->if_ops->dev(wl);
56 }
57
58
59 /* Raw target IO, address is not translated */
wl1271_raw_write(struct wl1271 * wl,int addr,void * buf,size_t len,bool fixed)60 static inline void wl1271_raw_write(struct wl1271 *wl, int addr, void *buf,
61 size_t len, bool fixed)
62 {
63 wl->if_ops->write(wl, addr, buf, len, fixed);
64 }
65
wl1271_raw_read(struct wl1271 * wl,int addr,void * buf,size_t len,bool fixed)66 static inline void wl1271_raw_read(struct wl1271 *wl, int addr, void *buf,
67 size_t len, bool fixed)
68 {
69 wl->if_ops->read(wl, addr, buf, len, fixed);
70 }
71
wl1271_raw_read32(struct wl1271 * wl,int addr)72 static inline u32 wl1271_raw_read32(struct wl1271 *wl, int addr)
73 {
74 wl1271_raw_read(wl, addr, &wl->buffer_32,
75 sizeof(wl->buffer_32), false);
76
77 return le32_to_cpu(wl->buffer_32);
78 }
79
wl1271_raw_write32(struct wl1271 * wl,int addr,u32 val)80 static inline void wl1271_raw_write32(struct wl1271 *wl, int addr, u32 val)
81 {
82 wl->buffer_32 = cpu_to_le32(val);
83 wl1271_raw_write(wl, addr, &wl->buffer_32,
84 sizeof(wl->buffer_32), false);
85 }
86
87 /* Translated target IO */
wl1271_translate_addr(struct wl1271 * wl,int addr)88 static inline int wl1271_translate_addr(struct wl1271 *wl, int addr)
89 {
90 /*
91 * To translate, first check to which window of addresses the
92 * particular address belongs. Then subtract the starting address
93 * of that window from the address. Then, add offset of the
94 * translated region.
95 *
96 * The translated regions occur next to each other in physical device
97 * memory, so just add the sizes of the preceding address regions to
98 * get the offset to the new region.
99 *
100 * Currently, only the two first regions are addressed, and the
101 * assumption is that all addresses will fall into either of those
102 * two.
103 */
104 if ((addr >= wl->part.reg.start) &&
105 (addr < wl->part.reg.start + wl->part.reg.size))
106 return addr - wl->part.reg.start + wl->part.mem.size;
107 else
108 return addr - wl->part.mem.start;
109 }
110
wl1271_read(struct wl1271 * wl,int addr,void * buf,size_t len,bool fixed)111 static inline void wl1271_read(struct wl1271 *wl, int addr, void *buf,
112 size_t len, bool fixed)
113 {
114 int physical;
115
116 physical = wl1271_translate_addr(wl, addr);
117
118 wl1271_raw_read(wl, physical, buf, len, fixed);
119 }
120
wl1271_write(struct wl1271 * wl,int addr,void * buf,size_t len,bool fixed)121 static inline void wl1271_write(struct wl1271 *wl, int addr, void *buf,
122 size_t len, bool fixed)
123 {
124 int physical;
125
126 physical = wl1271_translate_addr(wl, addr);
127
128 wl1271_raw_write(wl, physical, buf, len, fixed);
129 }
130
wl1271_read32(struct wl1271 * wl,int addr)131 static inline u32 wl1271_read32(struct wl1271 *wl, int addr)
132 {
133 return wl1271_raw_read32(wl, wl1271_translate_addr(wl, addr));
134 }
135
wl1271_write32(struct wl1271 * wl,int addr,u32 val)136 static inline void wl1271_write32(struct wl1271 *wl, int addr, u32 val)
137 {
138 wl1271_raw_write32(wl, wl1271_translate_addr(wl, addr), val);
139 }
140
wl1271_power_off(struct wl1271 * wl)141 static inline void wl1271_power_off(struct wl1271 *wl)
142 {
143 wl->if_ops->power(wl, false);
144 clear_bit(WL1271_FLAG_GPIO_POWER, &wl->flags);
145 }
146
wl1271_power_on(struct wl1271 * wl)147 static inline int wl1271_power_on(struct wl1271 *wl)
148 {
149 int ret = wl->if_ops->power(wl, true);
150 if (ret == 0)
151 set_bit(WL1271_FLAG_GPIO_POWER, &wl->flags);
152
153 return ret;
154 }
155
156
157 /* Top Register IO */
158 void wl1271_top_reg_write(struct wl1271 *wl, int addr, u16 val);
159 u16 wl1271_top_reg_read(struct wl1271 *wl, int addr);
160
161 int wl1271_set_partition(struct wl1271 *wl,
162 struct wl1271_partition_set *p);
163
164 /* Functions from wl1271_main.c */
165
166 int wl1271_register_hw(struct wl1271 *wl);
167 void wl1271_unregister_hw(struct wl1271 *wl);
168 int wl1271_init_ieee80211(struct wl1271 *wl);
169 struct ieee80211_hw *wl1271_alloc_hw(void);
170 int wl1271_free_hw(struct wl1271 *wl);
171 irqreturn_t wl1271_irq(int irq, void *data);
172
173 #endif
174