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1 | /* |
2 | * This file is part of wl12xx | |
3 | * | |
4 | * Copyright (C) 2008 Nokia Corporation | |
5 | * | |
0764de64 BC |
6 | * This program is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU General Public License | |
8 | * version 2 as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
18 | * 02110-1301 USA | |
19 | * | |
20 | */ | |
21 | ||
22 | #include "wl1251.h" | |
9bc6772e KV |
23 | #include "reg.h" |
24 | #include "io.h" | |
0764de64 | 25 | |
0e71bb08 KV |
26 | /* FIXME: this is static data nowadays and the table can be removed */ |
27 | static enum wl12xx_acx_int_reg wl1251_io_reg_table[ACX_REG_TABLE_LEN] = { | |
28 | [ACX_REG_INTERRUPT_TRIG] = (REGISTERS_BASE + 0x0474), | |
29 | [ACX_REG_INTERRUPT_TRIG_H] = (REGISTERS_BASE + 0x0478), | |
30 | [ACX_REG_INTERRUPT_MASK] = (REGISTERS_BASE + 0x0494), | |
31 | [ACX_REG_HINT_MASK_SET] = (REGISTERS_BASE + 0x0498), | |
32 | [ACX_REG_HINT_MASK_CLR] = (REGISTERS_BASE + 0x049C), | |
33 | [ACX_REG_INTERRUPT_NO_CLEAR] = (REGISTERS_BASE + 0x04B0), | |
34 | [ACX_REG_INTERRUPT_CLEAR] = (REGISTERS_BASE + 0x04A4), | |
35 | [ACX_REG_INTERRUPT_ACK] = (REGISTERS_BASE + 0x04A8), | |
36 | [ACX_REG_SLV_SOFT_RESET] = (REGISTERS_BASE + 0x0000), | |
37 | [ACX_REG_EE_START] = (REGISTERS_BASE + 0x080C), | |
38 | [ACX_REG_ECPU_CONTROL] = (REGISTERS_BASE + 0x0804) | |
39 | }; | |
40 | ||
0764de64 BC |
41 | static int wl1251_translate_reg_addr(struct wl1251 *wl, int addr) |
42 | { | |
43 | /* If the address is lower than REGISTERS_BASE, it means that this is | |
44 | * a chip-specific register address, so look it up in the registers | |
45 | * table */ | |
46 | if (addr < REGISTERS_BASE) { | |
47 | /* Make sure we don't go over the table */ | |
48 | if (addr >= ACX_REG_TABLE_LEN) { | |
49 | wl1251_error("address out of range (%d)", addr); | |
50 | return -EINVAL; | |
51 | } | |
0e71bb08 | 52 | addr = wl1251_io_reg_table[addr]; |
0764de64 BC |
53 | } |
54 | ||
55 | return addr - wl->physical_reg_addr + wl->virtual_reg_addr; | |
56 | } | |
57 | ||
58 | static int wl1251_translate_mem_addr(struct wl1251 *wl, int addr) | |
59 | { | |
60 | return addr - wl->physical_mem_addr + wl->virtual_mem_addr; | |
61 | } | |
62 | ||
63 | void wl1251_mem_read(struct wl1251 *wl, int addr, void *buf, size_t len) | |
64 | { | |
65 | int physical; | |
66 | ||
67 | physical = wl1251_translate_mem_addr(wl, addr); | |
68 | ||
08d9f572 | 69 | wl->if_ops->read(wl, physical, buf, len); |
0764de64 BC |
70 | } |
71 | ||
72 | void wl1251_mem_write(struct wl1251 *wl, int addr, void *buf, size_t len) | |
73 | { | |
74 | int physical; | |
75 | ||
76 | physical = wl1251_translate_mem_addr(wl, addr); | |
77 | ||
08d9f572 | 78 | wl->if_ops->write(wl, physical, buf, len); |
0764de64 BC |
79 | } |
80 | ||
81 | u32 wl1251_mem_read32(struct wl1251 *wl, int addr) | |
82 | { | |
83 | return wl1251_read32(wl, wl1251_translate_mem_addr(wl, addr)); | |
84 | } | |
85 | ||
86 | void wl1251_mem_write32(struct wl1251 *wl, int addr, u32 val) | |
87 | { | |
88 | wl1251_write32(wl, wl1251_translate_mem_addr(wl, addr), val); | |
89 | } | |
90 | ||
91 | u32 wl1251_reg_read32(struct wl1251 *wl, int addr) | |
92 | { | |
93 | return wl1251_read32(wl, wl1251_translate_reg_addr(wl, addr)); | |
94 | } | |
95 | ||
96 | void wl1251_reg_write32(struct wl1251 *wl, int addr, u32 val) | |
97 | { | |
98 | wl1251_write32(wl, wl1251_translate_reg_addr(wl, addr), val); | |
99 | } | |
0d77e141 BC |
100 | |
101 | /* Set the partitions to access the chip addresses. | |
102 | * | |
103 | * There are two VIRTUAL partitions (the memory partition and the | |
104 | * registers partition), which are mapped to two different areas of the | |
105 | * PHYSICAL (hardware) memory. This function also makes other checks to | |
106 | * ensure that the partitions are not overlapping. In the diagram below, the | |
107 | * memory partition comes before the register partition, but the opposite is | |
108 | * also supported. | |
109 | * | |
110 | * PHYSICAL address | |
111 | * space | |
112 | * | |
113 | * | | | |
114 | * ...+----+--> mem_start | |
115 | * VIRTUAL address ... | | | |
116 | * space ... | | [PART_0] | |
117 | * ... | | | |
118 | * 0x00000000 <--+----+... ...+----+--> mem_start + mem_size | |
119 | * | | ... | | | |
120 | * |MEM | ... | | | |
121 | * | | ... | | | |
122 | * part_size <--+----+... | | {unused area) | |
123 | * | | ... | | | |
124 | * |REG | ... | | | |
125 | * part_size | | ... | | | |
126 | * + <--+----+... ...+----+--> reg_start | |
127 | * reg_size ... | | | |
128 | * ... | | [PART_1] | |
129 | * ... | | | |
130 | * ...+----+--> reg_start + reg_size | |
131 | * | | | |
132 | * | |
133 | */ | |
134 | void wl1251_set_partition(struct wl1251 *wl, | |
135 | u32 mem_start, u32 mem_size, | |
136 | u32 reg_start, u32 reg_size) | |
137 | { | |
138 | struct wl1251_partition partition[2]; | |
139 | ||
140 | wl1251_debug(DEBUG_SPI, "mem_start %08X mem_size %08X", | |
141 | mem_start, mem_size); | |
142 | wl1251_debug(DEBUG_SPI, "reg_start %08X reg_size %08X", | |
143 | reg_start, reg_size); | |
144 | ||
145 | /* Make sure that the two partitions together don't exceed the | |
146 | * address range */ | |
147 | if ((mem_size + reg_size) > HW_ACCESS_MEMORY_MAX_RANGE) { | |
148 | wl1251_debug(DEBUG_SPI, "Total size exceeds maximum virtual" | |
149 | " address range. Truncating partition[0]."); | |
150 | mem_size = HW_ACCESS_MEMORY_MAX_RANGE - reg_size; | |
151 | wl1251_debug(DEBUG_SPI, "mem_start %08X mem_size %08X", | |
152 | mem_start, mem_size); | |
153 | wl1251_debug(DEBUG_SPI, "reg_start %08X reg_size %08X", | |
154 | reg_start, reg_size); | |
155 | } | |
156 | ||
157 | if ((mem_start < reg_start) && | |
158 | ((mem_start + mem_size) > reg_start)) { | |
159 | /* Guarantee that the memory partition doesn't overlap the | |
160 | * registers partition */ | |
161 | wl1251_debug(DEBUG_SPI, "End of partition[0] is " | |
162 | "overlapping partition[1]. Adjusted."); | |
163 | mem_size = reg_start - mem_start; | |
164 | wl1251_debug(DEBUG_SPI, "mem_start %08X mem_size %08X", | |
165 | mem_start, mem_size); | |
166 | wl1251_debug(DEBUG_SPI, "reg_start %08X reg_size %08X", | |
167 | reg_start, reg_size); | |
168 | } else if ((reg_start < mem_start) && | |
169 | ((reg_start + reg_size) > mem_start)) { | |
170 | /* Guarantee that the register partition doesn't overlap the | |
171 | * memory partition */ | |
172 | wl1251_debug(DEBUG_SPI, "End of partition[1] is" | |
173 | " overlapping partition[0]. Adjusted."); | |
174 | reg_size = mem_start - reg_start; | |
175 | wl1251_debug(DEBUG_SPI, "mem_start %08X mem_size %08X", | |
176 | mem_start, mem_size); | |
177 | wl1251_debug(DEBUG_SPI, "reg_start %08X reg_size %08X", | |
178 | reg_start, reg_size); | |
179 | } | |
180 | ||
181 | partition[0].start = mem_start; | |
182 | partition[0].size = mem_size; | |
183 | partition[1].start = reg_start; | |
184 | partition[1].size = reg_size; | |
185 | ||
186 | wl->physical_mem_addr = mem_start; | |
187 | wl->physical_reg_addr = reg_start; | |
188 | ||
189 | wl->virtual_mem_addr = 0; | |
190 | wl->virtual_reg_addr = mem_size; | |
191 | ||
192 | wl->if_ops->write(wl, HW_ACCESS_PART0_SIZE_ADDR, partition, | |
193 | sizeof(partition)); | |
194 | } |