1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * This file is part of wl1271
4 *
5 * Copyright (C) 2008-2010 Nokia Corporation
6 *
7 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
8 */
9
10 #include <linux/module.h>
11 #include <linux/platform_device.h>
12 #include <linux/spi/spi.h>
13 #include <linux/interrupt.h>
14
15 #include "wlcore.h"
16 #include "debug.h"
17 #include "wl12xx_80211.h"
18 #include "io.h"
19 #include "tx.h"
20
wl1271_set_block_size(struct wl1271 * wl)21 bool wl1271_set_block_size(struct wl1271 *wl)
22 {
23 if (wl->if_ops->set_block_size) {
24 wl->if_ops->set_block_size(wl->dev, WL12XX_BUS_BLOCK_SIZE);
25 return true;
26 }
27
28 return false;
29 }
30
wlcore_disable_interrupts(struct wl1271 * wl)31 void wlcore_disable_interrupts(struct wl1271 *wl)
32 {
33 disable_irq(wl->irq);
34 }
35 EXPORT_SYMBOL_GPL(wlcore_disable_interrupts);
36
wlcore_disable_interrupts_nosync(struct wl1271 * wl)37 void wlcore_disable_interrupts_nosync(struct wl1271 *wl)
38 {
39 disable_irq_nosync(wl->irq);
40 }
41 EXPORT_SYMBOL_GPL(wlcore_disable_interrupts_nosync);
42
wlcore_enable_interrupts(struct wl1271 * wl)43 void wlcore_enable_interrupts(struct wl1271 *wl)
44 {
45 enable_irq(wl->irq);
46 }
47 EXPORT_SYMBOL_GPL(wlcore_enable_interrupts);
48
wlcore_synchronize_interrupts(struct wl1271 * wl)49 void wlcore_synchronize_interrupts(struct wl1271 *wl)
50 {
51 synchronize_irq(wl->irq);
52 }
53 EXPORT_SYMBOL_GPL(wlcore_synchronize_interrupts);
54
wlcore_translate_addr(struct wl1271 * wl,int addr)55 int wlcore_translate_addr(struct wl1271 *wl, int addr)
56 {
57 struct wlcore_partition_set *part = &wl->curr_part;
58
59 /*
60 * To translate, first check to which window of addresses the
61 * particular address belongs. Then subtract the starting address
62 * of that window from the address. Then, add offset of the
63 * translated region.
64 *
65 * The translated regions occur next to each other in physical device
66 * memory, so just add the sizes of the preceding address regions to
67 * get the offset to the new region.
68 */
69 if ((addr >= part->mem.start) &&
70 (addr < part->mem.start + part->mem.size))
71 return addr - part->mem.start;
72 else if ((addr >= part->reg.start) &&
73 (addr < part->reg.start + part->reg.size))
74 return addr - part->reg.start + part->mem.size;
75 else if ((addr >= part->mem2.start) &&
76 (addr < part->mem2.start + part->mem2.size))
77 return addr - part->mem2.start + part->mem.size +
78 part->reg.size;
79 else if ((addr >= part->mem3.start) &&
80 (addr < part->mem3.start + part->mem3.size))
81 return addr - part->mem3.start + part->mem.size +
82 part->reg.size + part->mem2.size;
83
84 WARN(1, "HW address 0x%x out of range", addr);
85 return 0;
86 }
87 EXPORT_SYMBOL_GPL(wlcore_translate_addr);
88
89 /* Set the partitions to access the chip addresses
90 *
91 * To simplify driver code, a fixed (virtual) memory map is defined for
92 * register and memory addresses. Because in the chipset, in different stages
93 * of operation, those addresses will move around, an address translation
94 * mechanism is required.
95 *
96 * There are four partitions (three memory and one register partition),
97 * which are mapped to two different areas of the hardware memory.
98 *
99 * Virtual address
100 * space
101 *
102 * | |
103 * ...+----+--> mem.start
104 * Physical address ... | |
105 * space ... | | [PART_0]
106 * ... | |
107 * 00000000 <--+----+... ...+----+--> mem.start + mem.size
108 * | | ... | |
109 * |MEM | ... | |
110 * | | ... | |
111 * mem.size <--+----+... | | {unused area)
112 * | | ... | |
113 * |REG | ... | |
114 * mem.size | | ... | |
115 * + <--+----+... ...+----+--> reg.start
116 * reg.size | | ... | |
117 * |MEM2| ... | | [PART_1]
118 * | | ... | |
119 * ...+----+--> reg.start + reg.size
120 * | |
121 *
122 */
wlcore_set_partition(struct wl1271 * wl,const struct wlcore_partition_set * p)123 int wlcore_set_partition(struct wl1271 *wl,
124 const struct wlcore_partition_set *p)
125 {
126 int ret;
127
128 /* copy partition info */
129 memcpy(&wl->curr_part, p, sizeof(*p));
130
131 wl1271_debug(DEBUG_IO, "mem_start %08X mem_size %08X",
132 p->mem.start, p->mem.size);
133 wl1271_debug(DEBUG_IO, "reg_start %08X reg_size %08X",
134 p->reg.start, p->reg.size);
135 wl1271_debug(DEBUG_IO, "mem2_start %08X mem2_size %08X",
136 p->mem2.start, p->mem2.size);
137 wl1271_debug(DEBUG_IO, "mem3_start %08X mem3_size %08X",
138 p->mem3.start, p->mem3.size);
139
140 ret = wlcore_raw_write32(wl, HW_PART0_START_ADDR, p->mem.start);
141 if (ret < 0)
142 goto out;
143
144 ret = wlcore_raw_write32(wl, HW_PART0_SIZE_ADDR, p->mem.size);
145 if (ret < 0)
146 goto out;
147
148 ret = wlcore_raw_write32(wl, HW_PART1_START_ADDR, p->reg.start);
149 if (ret < 0)
150 goto out;
151
152 ret = wlcore_raw_write32(wl, HW_PART1_SIZE_ADDR, p->reg.size);
153 if (ret < 0)
154 goto out;
155
156 ret = wlcore_raw_write32(wl, HW_PART2_START_ADDR, p->mem2.start);
157 if (ret < 0)
158 goto out;
159
160 ret = wlcore_raw_write32(wl, HW_PART2_SIZE_ADDR, p->mem2.size);
161 if (ret < 0)
162 goto out;
163
164 /* wl12xx only: We don't need the size of the last partition,
165 * as it is automatically calculated based on the total memory
166 * size and the sizes of the previous partitions.
167 *
168 * wl18xx re-defines the HW_PART3 addresses for logger over
169 * SDIO support. wl12xx is expecting the write to
170 * HW_PART3_START_ADDR at offset 24. This creates conflict
171 * between the addresses.
172 * In order to fix this the expected value is written to
173 * HW_PART3_SIZE_ADDR instead which is at offset 24 after changes.
174 */
175 ret = wlcore_raw_write32(wl, HW_PART3_START_ADDR, p->mem3.start);
176 if (ret < 0)
177 goto out;
178
179 ret = wlcore_raw_write32(wl, HW_PART3_SIZE_ADDR, p->mem3.size);
180 if (ret < 0)
181 goto out;
182
183 out:
184 return ret;
185 }
186 EXPORT_SYMBOL_GPL(wlcore_set_partition);
187
wl1271_io_reset(struct wl1271 * wl)188 void wl1271_io_reset(struct wl1271 *wl)
189 {
190 if (wl->if_ops->reset)
191 wl->if_ops->reset(wl->dev);
192 }
193
wl1271_io_init(struct wl1271 * wl)194 void wl1271_io_init(struct wl1271 *wl)
195 {
196 if (wl->if_ops->init)
197 wl->if_ops->init(wl->dev);
198 }
199