arch/mips/include/asm/mach-powertv/asic_regs.h

   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 */
  24 enum 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 */
  58 union register_map_entry {
  59         unsigned long phys;
  60         u32 *virt;
  61 };
  62
  63 #define REGISTER_MAP_ELEMENT(x) union register_map_entry x;
  64 struct 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  */
  76 static 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  */
  92 static 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
 103 extern struct register_map _asic_register_map;
 104 extern 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
 124 extern void asic_irq_init(void);
 125 #endif