| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * This file is part of wl12xx |
| * |
| * Copyright (C) 2008 Nokia Corporation |
| */ |
| |
| #include "wl1251.h" |
| #include "reg.h" |
| #include "io.h" |
| |
| /* FIXME: this is static data nowadays and the table can be removed */ |
| static enum wl12xx_acx_int_reg wl1251_io_reg_table[ACX_REG_TABLE_LEN] = { |
| [ACX_REG_INTERRUPT_TRIG] = (REGISTERS_BASE + 0x0474), |
| [ACX_REG_INTERRUPT_TRIG_H] = (REGISTERS_BASE + 0x0478), |
| [ACX_REG_INTERRUPT_MASK] = (REGISTERS_BASE + 0x0494), |
| [ACX_REG_HINT_MASK_SET] = (REGISTERS_BASE + 0x0498), |
| [ACX_REG_HINT_MASK_CLR] = (REGISTERS_BASE + 0x049C), |
| [ACX_REG_INTERRUPT_NO_CLEAR] = (REGISTERS_BASE + 0x04B0), |
| [ACX_REG_INTERRUPT_CLEAR] = (REGISTERS_BASE + 0x04A4), |
| [ACX_REG_INTERRUPT_ACK] = (REGISTERS_BASE + 0x04A8), |
| [ACX_REG_SLV_SOFT_RESET] = (REGISTERS_BASE + 0x0000), |
| [ACX_REG_EE_START] = (REGISTERS_BASE + 0x080C), |
| [ACX_REG_ECPU_CONTROL] = (REGISTERS_BASE + 0x0804) |
| }; |
| |
| static int wl1251_translate_reg_addr(struct wl1251 *wl, int addr) |
| { |
| /* If the address is lower than REGISTERS_BASE, it means that this is |
| * a chip-specific register address, so look it up in the registers |
| * table */ |
| if (addr < REGISTERS_BASE) { |
| /* Make sure we don't go over the table */ |
| if (addr >= ACX_REG_TABLE_LEN) { |
| wl1251_error("address out of range (%d)", addr); |
| return -EINVAL; |
| } |
| addr = wl1251_io_reg_table[addr]; |
| } |
| |
| return addr - wl->physical_reg_addr + wl->virtual_reg_addr; |
| } |
| |
| static int wl1251_translate_mem_addr(struct wl1251 *wl, int addr) |
| { |
| return addr - wl->physical_mem_addr + wl->virtual_mem_addr; |
| } |
| |
| void wl1251_mem_read(struct wl1251 *wl, int addr, void *buf, size_t len) |
| { |
| int physical; |
| |
| physical = wl1251_translate_mem_addr(wl, addr); |
| |
| wl->if_ops->read(wl, physical, buf, len); |
| } |
| |
| void wl1251_mem_write(struct wl1251 *wl, int addr, void *buf, size_t len) |
| { |
| int physical; |
| |
| physical = wl1251_translate_mem_addr(wl, addr); |
| |
| wl->if_ops->write(wl, physical, buf, len); |
| } |
| |
| u32 wl1251_mem_read32(struct wl1251 *wl, int addr) |
| { |
| return wl1251_read32(wl, wl1251_translate_mem_addr(wl, addr)); |
| } |
| |
| void wl1251_mem_write32(struct wl1251 *wl, int addr, u32 val) |
| { |
| wl1251_write32(wl, wl1251_translate_mem_addr(wl, addr), val); |
| } |
| |
| u32 wl1251_reg_read32(struct wl1251 *wl, int addr) |
| { |
| return wl1251_read32(wl, wl1251_translate_reg_addr(wl, addr)); |
| } |
| |
| void wl1251_reg_write32(struct wl1251 *wl, int addr, u32 val) |
| { |
| wl1251_write32(wl, wl1251_translate_reg_addr(wl, addr), val); |
| } |
| |
| /* Set the partitions to access the chip addresses. |
| * |
| * There are two VIRTUAL partitions (the memory partition and the |
| * registers partition), which are mapped to two different areas of the |
| * PHYSICAL (hardware) memory. This function also makes other checks to |
| * ensure that the partitions are not overlapping. In the diagram below, the |
| * memory partition comes before the register partition, but the opposite is |
| * also supported. |
| * |
| * PHYSICAL address |
| * space |
| * |
| * | | |
| * ...+----+--> mem_start |
| * VIRTUAL address ... | | |
| * space ... | | [PART_0] |
| * ... | | |
| * 0x00000000 <--+----+... ...+----+--> mem_start + mem_size |
| * | | ... | | |
| * |MEM | ... | | |
| * | | ... | | |
| * part_size <--+----+... | | {unused area) |
| * | | ... | | |
| * |REG | ... | | |
| * part_size | | ... | | |
| * + <--+----+... ...+----+--> reg_start |
| * reg_size ... | | |
| * ... | | [PART_1] |
| * ... | | |
| * ...+----+--> reg_start + reg_size |
| * | | |
| * |
| */ |
| void wl1251_set_partition(struct wl1251 *wl, |
| u32 mem_start, u32 mem_size, |
| u32 reg_start, u32 reg_size) |
| { |
| struct wl1251_partition_set *partition; |
| |
| partition = kmalloc(sizeof(*partition), GFP_KERNEL); |
| if (!partition) { |
| wl1251_error("can not allocate partition buffer"); |
| return; |
| } |
| |
| wl1251_debug(DEBUG_SPI, "mem_start %08X mem_size %08X", |
| mem_start, mem_size); |
| wl1251_debug(DEBUG_SPI, "reg_start %08X reg_size %08X", |
| reg_start, reg_size); |
| |
| /* Make sure that the two partitions together don't exceed the |
| * address range */ |
| if ((mem_size + reg_size) > HW_ACCESS_MEMORY_MAX_RANGE) { |
| wl1251_debug(DEBUG_SPI, "Total size exceeds maximum virtual" |
| " address range. Truncating partition[0]."); |
| mem_size = HW_ACCESS_MEMORY_MAX_RANGE - reg_size; |
| wl1251_debug(DEBUG_SPI, "mem_start %08X mem_size %08X", |
| mem_start, mem_size); |
| wl1251_debug(DEBUG_SPI, "reg_start %08X reg_size %08X", |
| reg_start, reg_size); |
| } |
| |
| if ((mem_start < reg_start) && |
| ((mem_start + mem_size) > reg_start)) { |
| /* Guarantee that the memory partition doesn't overlap the |
| * registers partition */ |
| wl1251_debug(DEBUG_SPI, "End of partition[0] is " |
| "overlapping partition[1]. Adjusted."); |
| mem_size = reg_start - mem_start; |
| wl1251_debug(DEBUG_SPI, "mem_start %08X mem_size %08X", |
| mem_start, mem_size); |
| wl1251_debug(DEBUG_SPI, "reg_start %08X reg_size %08X", |
| reg_start, reg_size); |
| } else if ((reg_start < mem_start) && |
| ((reg_start + reg_size) > mem_start)) { |
| /* Guarantee that the register partition doesn't overlap the |
| * memory partition */ |
| wl1251_debug(DEBUG_SPI, "End of partition[1] is" |
| " overlapping partition[0]. Adjusted."); |
| reg_size = mem_start - reg_start; |
| wl1251_debug(DEBUG_SPI, "mem_start %08X mem_size %08X", |
| mem_start, mem_size); |
| wl1251_debug(DEBUG_SPI, "reg_start %08X reg_size %08X", |
| reg_start, reg_size); |
| } |
| |
| partition->mem.start = mem_start; |
| partition->mem.size = mem_size; |
| partition->reg.start = reg_start; |
| partition->reg.size = reg_size; |
| |
| wl->physical_mem_addr = mem_start; |
| wl->physical_reg_addr = reg_start; |
| |
| wl->virtual_mem_addr = 0; |
| wl->virtual_reg_addr = mem_size; |
| |
| wl->if_ops->write(wl, HW_ACCESS_PART0_SIZE_ADDR, partition, |
| sizeof(*partition)); |
| |
| kfree(partition); |
| } |
