1/* 2 * This file is part of wl12xx 3 * 4 * Copyright (C) 2008 Nokia Corporation 5 * 6 * Contact: Kalle Valo <kalle.valo@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 "wl1251.h" 25#include "wl1251_reg.h" 26#include "wl1251_io.h" 27 28static enum wl12xx_acx_int_reg wl1251_io_reg_table[ACX_REG_TABLE_LEN] = { 29 [ACX_REG_INTERRUPT_TRIG] = (REGISTERS_BASE + 0x0474), 30 [ACX_REG_INTERRUPT_TRIG_H] = (REGISTERS_BASE + 0x0478), 31 [ACX_REG_INTERRUPT_MASK] = (REGISTERS_BASE + 0x0494), 32 [ACX_REG_HINT_MASK_SET] = (REGISTERS_BASE + 0x0498), 33 [ACX_REG_HINT_MASK_CLR] = (REGISTERS_BASE + 0x049C), 34 [ACX_REG_INTERRUPT_NO_CLEAR] = (REGISTERS_BASE + 0x04B0), 35 [ACX_REG_INTERRUPT_CLEAR] = (REGISTERS_BASE + 0x04A4), 36 [ACX_REG_INTERRUPT_ACK] = (REGISTERS_BASE + 0x04A8), 37 [ACX_REG_SLV_SOFT_RESET] = (REGISTERS_BASE + 0x0000), 38 [ACX_REG_EE_START] = (REGISTERS_BASE + 0x080C), 39 [ACX_REG_ECPU_CONTROL] = (REGISTERS_BASE + 0x0804) 40}; 41 42static int wl1251_translate_reg_addr(struct wl1251 *wl, int addr) 43{ 44 /* If the address is lower than REGISTERS_BASE, it means that this is 45 * a chip-specific register address, so look it up in the registers 46 * table */ 47 if (addr < REGISTERS_BASE) { 48 /* Make sure we don't go over the table */ 49 if (addr >= ACX_REG_TABLE_LEN) { 50 wl1251_error("address out of range (%d)", addr); 51 return -EINVAL; 52 } 53 addr = wl1251_io_reg_table[addr]; 54 } 55 56 return addr - wl->physical_reg_addr + wl->virtual_reg_addr; 57} 58 59static int wl1251_translate_mem_addr(struct wl1251 *wl, int addr) 60{ 61 return addr - wl->physical_mem_addr + wl->virtual_mem_addr; 62} 63 64void wl1251_mem_read(struct wl1251 *wl, int addr, void *buf, size_t len) 65{ 66 int physical; 67 68 physical = wl1251_translate_mem_addr(wl, addr); 69 70 wl->if_ops->read(wl, physical, buf, len); 71} 72 73void wl1251_mem_write(struct wl1251 *wl, int addr, void *buf, size_t len) 74{ 75 int physical; 76 77 physical = wl1251_translate_mem_addr(wl, addr); 78 79 wl->if_ops->write(wl, physical, buf, len); 80} 81 82u32 wl1251_mem_read32(struct wl1251 *wl, int addr) 83{ 84 return wl1251_read32(wl, wl1251_translate_mem_addr(wl, addr)); 85} 86 87void wl1251_mem_write32(struct wl1251 *wl, int addr, u32 val) 88{ 89 wl1251_write32(wl, wl1251_translate_mem_addr(wl, addr), val); 90} 91 92u32 wl1251_reg_read32(struct wl1251 *wl, int addr) 93{ 94 return wl1251_read32(wl, wl1251_translate_reg_addr(wl, addr)); 95} 96 97void wl1251_reg_write32(struct wl1251 *wl, int addr, u32 val) 98{ 99 wl1251_write32(wl, wl1251_translate_reg_addr(wl, addr), val); 100} 101 102/* Set the partitions to access the chip addresses. 103 * 104 * There are two VIRTUAL partitions (the memory partition and the 105 * registers partition), which are mapped to two different areas of the 106 * PHYSICAL (hardware) memory. This function also makes other checks to 107 * ensure that the partitions are not overlapping. In the diagram below, the 108 * memory partition comes before the register partition, but the opposite is 109 * also supported. 110 * 111 * PHYSICAL address 112 * space 113 * 114 * | | 115 * ...+----+--> mem_start 116 * VIRTUAL address ... | | 117 * space ... | | [PART_0] 118 * ... | | 119 * 0x00000000 <--+----+... ...+----+--> mem_start + mem_size 120 * | | ... | | 121 * |MEM | ... | | 122 * | | ... | | 123 * part_size <--+----+... | | {unused area) 124 * | | ... | | 125 * |REG | ... | | 126 * part_size | | ... | | 127 * + <--+----+... ...+----+--> reg_start 128 * reg_size ... | | 129 * ... | | [PART_1] 130 * ... | | 131 * ...+----+--> reg_start + reg_size 132 * | | 133 * 134 */ 135void wl1251_set_partition(struct wl1251 *wl, 136 u32 mem_start, u32 mem_size, 137 u32 reg_start, u32 reg_size) 138{ 139 struct wl1251_partition partition[2]; 140 141 wl1251_debug(DEBUG_SPI, "mem_start %08X mem_size %08X", 142 mem_start, mem_size); 143 wl1251_debug(DEBUG_SPI, "reg_start %08X reg_size %08X", 144 reg_start, reg_size); 145 146 /* Make sure that the two partitions together don't exceed the 147 * address range */ 148 if ((mem_size + reg_size) > HW_ACCESS_MEMORY_MAX_RANGE) { 149 wl1251_debug(DEBUG_SPI, "Total size exceeds maximum virtual" 150 " address range. Truncating partition[0]."); 151 mem_size = HW_ACCESS_MEMORY_MAX_RANGE - reg_size; 152 wl1251_debug(DEBUG_SPI, "mem_start %08X mem_size %08X", 153 mem_start, mem_size); 154 wl1251_debug(DEBUG_SPI, "reg_start %08X reg_size %08X", 155 reg_start, reg_size); 156 } 157 158 if ((mem_start < reg_start) && 159 ((mem_start + mem_size) > reg_start)) { 160 /* Guarantee that the memory partition doesn't overlap the 161 * registers partition */ 162 wl1251_debug(DEBUG_SPI, "End of partition[0] is " 163 "overlapping partition[1]. Adjusted."); 164 mem_size = reg_start - mem_start; 165 wl1251_debug(DEBUG_SPI, "mem_start %08X mem_size %08X", 166 mem_start, mem_size); 167 wl1251_debug(DEBUG_SPI, "reg_start %08X reg_size %08X", 168 reg_start, reg_size); 169 } else if ((reg_start < mem_start) && 170 ((reg_start + reg_size) > mem_start)) { 171 /* Guarantee that the register partition doesn't overlap the 172 * memory partition */ 173 wl1251_debug(DEBUG_SPI, "End of partition[1] is" 174 " overlapping partition[0]. Adjusted."); 175 reg_size = mem_start - reg_start; 176 wl1251_debug(DEBUG_SPI, "mem_start %08X mem_size %08X", 177 mem_start, mem_size); 178 wl1251_debug(DEBUG_SPI, "reg_start %08X reg_size %08X", 179 reg_start, reg_size); 180 } 181 182 partition[0].start = mem_start; 183 partition[0].size = mem_size; 184 partition[1].start = reg_start; 185 partition[1].size = reg_size; 186 187 wl->physical_mem_addr = mem_start; 188 wl->physical_reg_addr = reg_start; 189 190 wl->virtual_mem_addr = 0; 191 wl->virtual_reg_addr = mem_size; 192 193 wl->if_ops->write(wl, HW_ACCESS_PART0_SIZE_ADDR, partition, 194 sizeof(partition)); 195} 196