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
21bool 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
31void wlcore_disable_interrupts(struct wl1271 *wl)
32{
33	disable_irq(wl->irq);
34}
35EXPORT_SYMBOL_GPL(wlcore_disable_interrupts);
36
37void wlcore_disable_interrupts_nosync(struct wl1271 *wl)
38{
39	disable_irq_nosync(wl->irq);
40}
41EXPORT_SYMBOL_GPL(wlcore_disable_interrupts_nosync);
42
43void wlcore_enable_interrupts(struct wl1271 *wl)
44{
45	enable_irq(wl->irq);
46}
47EXPORT_SYMBOL_GPL(wlcore_enable_interrupts);
48
49void wlcore_synchronize_interrupts(struct wl1271 *wl)
50{
51	synchronize_irq(wl->irq);
52}
53EXPORT_SYMBOL_GPL(wlcore_synchronize_interrupts);
54
55int 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}
87EXPORT_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 */
123int 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
183out:
184	return ret;
185}
186EXPORT_SYMBOL_GPL(wlcore_set_partition);
187
188void wl1271_io_reset(struct wl1271 *wl)
189{
190	if (wl->if_ops->reset)
191		wl->if_ops->reset(wl->dev);
192}
193
194void wl1271_io_init(struct wl1271 *wl)
195{
196	if (wl->if_ops->init)
197		wl->if_ops->init(wl->dev);
198}
199