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1/*
2 * This file is part of wl1271
3 *
4 * Copyright (C) 2008-2010 Nokia Corporation
5 *
6 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA
21 *
22 */
23
24#include <linux/module.h>
25#include <linux/platform_device.h>
26#include <linux/spi/spi.h>
27#include <linux/interrupt.h>
28
29#include "wlcore.h"
30#include "debug.h"
31#include "wl12xx_80211.h"
32#include "io.h"
33#include "tx.h"
34
35bool wl1271_set_block_size(struct wl1271 *wl)
36{
37 if (wl->if_ops->set_block_size) {
38 wl->if_ops->set_block_size(wl->dev, WL12XX_BUS_BLOCK_SIZE);
39 return true;
40 }
41
42 return false;
43}
44
45void wlcore_disable_interrupts(struct wl1271 *wl)
46{
47 disable_irq(wl->irq);
48}
49EXPORT_SYMBOL_GPL(wlcore_disable_interrupts);
50
51void wlcore_disable_interrupts_nosync(struct wl1271 *wl)
52{
53 disable_irq_nosync(wl->irq);
54}
55EXPORT_SYMBOL_GPL(wlcore_disable_interrupts_nosync);
56
57void wlcore_enable_interrupts(struct wl1271 *wl)
58{
59 enable_irq(wl->irq);
60}
61EXPORT_SYMBOL_GPL(wlcore_enable_interrupts);
62
63void wlcore_synchronize_interrupts(struct wl1271 *wl)
64{
65 synchronize_irq(wl->irq);
66}
67EXPORT_SYMBOL_GPL(wlcore_synchronize_interrupts);
68
69int wlcore_translate_addr(struct wl1271 *wl, int addr)
70{
71 struct wlcore_partition_set *part = &wl->curr_part;
72
73 /*
74 * To translate, first check to which window of addresses the
75 * particular address belongs. Then subtract the starting address
76 * of that window from the address. Then, add offset of the
77 * translated region.
78 *
79 * The translated regions occur next to each other in physical device
80 * memory, so just add the sizes of the preceding address regions to
81 * get the offset to the new region.
82 */
83 if ((addr >= part->mem.start) &&
84 (addr < part->mem.start + part->mem.size))
85 return addr - part->mem.start;
86 else if ((addr >= part->reg.start) &&
87 (addr < part->reg.start + part->reg.size))
88 return addr - part->reg.start + part->mem.size;
89 else if ((addr >= part->mem2.start) &&
90 (addr < part->mem2.start + part->mem2.size))
91 return addr - part->mem2.start + part->mem.size +
92 part->reg.size;
93 else if ((addr >= part->mem3.start) &&
94 (addr < part->mem3.start + part->mem3.size))
95 return addr - part->mem3.start + part->mem.size +
96 part->reg.size + part->mem2.size;
97
98 WARN(1, "HW address 0x%x out of range", addr);
99 return 0;
100}
101EXPORT_SYMBOL_GPL(wlcore_translate_addr);
102
103/* Set the partitions to access the chip addresses
104 *
105 * To simplify driver code, a fixed (virtual) memory map is defined for
106 * register and memory addresses. Because in the chipset, in different stages
107 * of operation, those addresses will move around, an address translation
108 * mechanism is required.
109 *
110 * There are four partitions (three memory and one register partition),
111 * which are mapped to two different areas of the hardware memory.
112 *
113 * Virtual address
114 * space
115 *
116 * | |
117 * ...+----+--> mem.start
118 * Physical address ... | |
119 * space ... | | [PART_0]
120 * ... | |
121 * 00000000 <--+----+... ...+----+--> mem.start + mem.size
122 * | | ... | |
123 * |MEM | ... | |
124 * | | ... | |
125 * mem.size <--+----+... | | {unused area)
126 * | | ... | |
127 * |REG | ... | |
128 * mem.size | | ... | |
129 * + <--+----+... ...+----+--> reg.start
130 * reg.size | | ... | |
131 * |MEM2| ... | | [PART_1]
132 * | | ... | |
133 * ...+----+--> reg.start + reg.size
134 * | |
135 *
136 */
137int wlcore_set_partition(struct wl1271 *wl,
138 const struct wlcore_partition_set *p)
139{
140 int ret;
141
142 /* copy partition info */
143 memcpy(&wl->curr_part, p, sizeof(*p));
144
145 wl1271_debug(DEBUG_IO, "mem_start %08X mem_size %08X",
146 p->mem.start, p->mem.size);
147 wl1271_debug(DEBUG_IO, "reg_start %08X reg_size %08X",
148 p->reg.start, p->reg.size);
149 wl1271_debug(DEBUG_IO, "mem2_start %08X mem2_size %08X",
150 p->mem2.start, p->mem2.size);
151 wl1271_debug(DEBUG_IO, "mem3_start %08X mem3_size %08X",
152 p->mem3.start, p->mem3.size);
153
154 ret = wlcore_raw_write32(wl, HW_PART0_START_ADDR, p->mem.start);
155 if (ret < 0)
156 goto out;
157
158 ret = wlcore_raw_write32(wl, HW_PART0_SIZE_ADDR, p->mem.size);
159 if (ret < 0)
160 goto out;
161
162 ret = wlcore_raw_write32(wl, HW_PART1_START_ADDR, p->reg.start);
163 if (ret < 0)
164 goto out;
165
166 ret = wlcore_raw_write32(wl, HW_PART1_SIZE_ADDR, p->reg.size);
167 if (ret < 0)
168 goto out;
169
170 ret = wlcore_raw_write32(wl, HW_PART2_START_ADDR, p->mem2.start);
171 if (ret < 0)
172 goto out;
173
174 ret = wlcore_raw_write32(wl, HW_PART2_SIZE_ADDR, p->mem2.size);
175 if (ret < 0)
176 goto out;
177
178 /*
179 * We don't need the size of the last partition, as it is
180 * automatically calculated based on the total memory size and
181 * the sizes of the previous partitions.
182 */
183 ret = wlcore_raw_write32(wl, HW_PART3_START_ADDR, p->mem3.start);
184
185out:
186 return ret;
187}
188EXPORT_SYMBOL_GPL(wlcore_set_partition);
189
190void wl1271_io_reset(struct wl1271 *wl)
191{
192 if (wl->if_ops->reset)
193 wl->if_ops->reset(wl->dev);
194}
195
196void wl1271_io_init(struct wl1271 *wl)
197{
198 if (wl->if_ops->init)
199 wl->if_ops->init(wl->dev);
200}