1/*
  2 * Copyright (C) 2009  Cisco Systems, Inc.
  3 *
  4 * This program is free software; you can redistribute it and/or modify
  5 * it under the terms of the GNU General Public License as published by
  6 * the Free Software Foundation; either version 2 of the License, or
  7 * (at your option) any later version.
  8 *
  9 * This program is distributed in the hope that it will be useful,
 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 12 * GNU General Public License for more details.
 13 *
 14 * You should have received a copy of the GNU General Public License
 15 * along with this program; if not, write to the Free Software
 16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 17 */
 18
 19#ifndef __ASM_MACH_POWERTV_ASIC_H_
 20#define __ASM_MACH_POWERTV_ASIC_H_
 21#include <linux/io.h>
 22
 23/* ASIC types */
 24enum asic_type {
 25	ASIC_UNKNOWN,
 26	ASIC_ZEUS,
 27	ASIC_CALLIOPE,
 28	ASIC_CRONUS,
 29	ASIC_CRONUSLITE,
 30	ASIC_GAIA,
 31	ASICS			/* Number of supported ASICs */
 32};
 33
 34/* hardcoded values read from Chip Version registers */
 35#define CRONUS_10	0x0B4C1C20
 36#define CRONUS_11	0x0B4C1C21
 37#define CRONUSLITE_10	0x0B4C1C40
 38
 39#define NAND_FLASH_BASE		0x03000000
 40#define CALLIOPE_IO_BASE	0x08000000
 41#define GAIA_IO_BASE		0x09000000
 42#define CRONUS_IO_BASE		0x09000000
 43#define ZEUS_IO_BASE		0x09000000
 44
 45#define ASIC_IO_SIZE		0x01000000
 46
 47/* Definitions for backward compatibility */
 48#define UART1_INTSTAT	uart1_intstat
 49#define UART1_INTEN	uart1_inten
 50#define UART1_CONFIG1	uart1_config1
 51#define UART1_CONFIG2	uart1_config2
 52#define UART1_DIVISORHI	uart1_divisorhi
 53#define UART1_DIVISORLO	uart1_divisorlo
 54#define UART1_DATA	uart1_data
 55#define UART1_STATUS	uart1_status
 56
 57/* ASIC register enumeration */
 58union register_map_entry {
 59	unsigned long phys;
 60	u32 *virt;
 61};
 62
 63#define REGISTER_MAP_ELEMENT(x) union register_map_entry x;
 64struct register_map {
 65#include <asm/mach-powertv/asic_reg_map.h>
 66};
 67#undef REGISTER_MAP_ELEMENT
 68
 69/**
 70 * register_map_offset_phys - add an offset to the physical address
 71 * @map:	Pointer to the &struct register_map
 72 * @offset:	Value to add
 73 *
 74 * Only adds the base to non-zero physical addresses
 75 */
 76static inline void register_map_offset_phys(struct register_map *map,
 77	unsigned long offset)
 78{
 79#define REGISTER_MAP_ELEMENT(x)		do {				\
 80		if (map->x.phys != 0)					\
 81			map->x.phys += offset;				\
 82	} while (false);
 83
 84#include <asm/mach-powertv/asic_reg_map.h>
 85#undef REGISTER_MAP_ELEMENT
 86}
 87
 88/**
 89 * register_map_virtualize - Convert &register_map to virtual addresses
 90 * @map:	Pointer to &register_map to virtualize
 91 */
 92static inline void register_map_virtualize(struct register_map *map)
 93{
 94#define REGISTER_MAP_ELEMENT(x)		do {				\
 95		map->x.virt = (!map->x.phys) ? NULL :			\
 96			UNCAC_ADDR(phys_to_virt(map->x.phys));		\
 97	} while (false);
 98
 99#include <asm/mach-powertv/asic_reg_map.h>
100#undef REGISTER_MAP_ELEMENT
101}
102
103extern struct register_map _asic_register_map;
104extern unsigned long asic_phy_base;
105
106/*
107 * Macros to interface to registers through their ioremapped address
108 * asic_reg_phys_addr	Returns the physical address of the given register
109 * asic_reg_addr	Returns the iomapped virtual address of the given
110 *			register.
111 */
112#define asic_reg_addr(x)	(_asic_register_map.x.virt)
113#define asic_reg_phys_addr(x)	(virt_to_phys((void *) CAC_ADDR(	\
114					(unsigned long) asic_reg_addr(x))))
115
116/*
117 * The asic_reg macro is gone. It should be replaced by either asic_read or
118 * asic_write, as appropriate.
119 */
120
121#define asic_read(x)		readl(asic_reg_addr(x))
122#define asic_write(v, x)	writel(v, asic_reg_addr(x))
123
124extern void asic_irq_init(void);
125#endif