asic_regs.h

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/*
 * Copyright (C) 2009  Cisco Systems, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#ifndef __ASM_MACH_POWERTV_ASIC_H_
#define __ASM_MACH_POWERTV_ASIC_H_
#include <linux/io.h>

/* ASIC types */
enum asic_type {
    ASIC_UNKNOWN,
    ASIC_ZEUS,
    ASIC_CALLIOPE,
    ASIC_CRONUS,
    ASIC_CRONUSLITE,
    ASIC_GAIA,
    ASICS           /* Number of supported ASICs */
};

/* hardcoded values read from Chip Version registers */
#define CRONUS_10   0x0B4C1C20
#define CRONUS_11   0x0B4C1C21
#define CRONUSLITE_10   0x0B4C1C40

#define NAND_FLASH_BASE     0x03000000
#define CALLIOPE_IO_BASE    0x08000000
#define GAIA_IO_BASE        0x09000000
#define CRONUS_IO_BASE      0x09000000
#define ZEUS_IO_BASE        0x09000000

#define ASIC_IO_SIZE        0x01000000

/* Definitions for backward compatibility */
#define UART1_INTSTAT   uart1_intstat
#define UART1_INTEN uart1_inten
#define UART1_CONFIG1   uart1_config1
#define UART1_CONFIG2   uart1_config2
#define UART1_DIVISORHI uart1_divisorhi
#define UART1_DIVISORLO uart1_divisorlo
#define UART1_DATA  uart1_data
#define UART1_STATUS    uart1_status

/* ASIC register enumeration */
union register_map_entry {
    unsigned long phys;
    u32 *virt;
};

#define REGISTER_MAP_ELEMENT(x) union register_map_entry x;
struct register_map {
#include <asm/mach-powertv/asic_reg_map.h>
};
#undef REGISTER_MAP_ELEMENT

static inline void register_map_offset_phys(struct register_map *map,
    unsigned long offset)
{
#define REGISTER_MAP_ELEMENT(x)     do {                \
        if (map->x.phys != 0)                   \
            map->x.phys += offset;              \
    } while (false);

#include <asm/mach-powertv/asic_reg_map.h>
#undef REGISTER_MAP_ELEMENT
}

static inline void register_map_virtualize(struct register_map *map)
{
#define REGISTER_MAP_ELEMENT(x)     do {                \
        map->x.virt = (!map->x.phys) ? NULL :           \
            UNCAC_ADDR(phys_to_virt(map->x.phys));      \
    } while (false);

#include <asm/mach-powertv/asic_reg_map.h>
#undef REGISTER_MAP_ELEMENT
}

extern struct register_map _asic_register_map;
extern unsigned long asic_phy_base;

/*
 * Macros to interface to registers through their ioremapped address
 * asic_reg_phys_addr   Returns the physical address of the given register
 * asic_reg_addr    Returns the iomapped virtual address of the given
 *          register.
 */
#define asic_reg_addr(x)    (_asic_register_map.x.virt)
#define asic_reg_phys_addr(x)   (virt_to_phys((void *) CAC_ADDR(    \
                    (unsigned long) asic_reg_addr(x))))

/*
 * The asic_reg macro is gone. It should be replaced by either asic_read or
 * asic_write, as appropriate.
 */

#define asic_read(x)        readl(asic_reg_addr(x))
#define asic_write(v, x)    writel(v, asic_reg_addr(x))

extern void asic_irq_init(void);
#endif