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io.c

/* arch/arm/mach-msm/io.c
 *
 * MSM7K, QSD io support
 *
 * Copyright (C) 2007 Google, Inc.
 * Copyright (c) 2008-2010, Code Aurora Forum. All rights reserved.
 * Author: Brian Swetland <swetland@google.com>
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * 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.
 *
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>

#include <mach/hardware.h>
#include <asm/page.h>
#include <mach/msm_iomap.h>
#include <asm/mach/map.h>

#include <mach/board.h>

#define MSM_DEVICE(name) { \
            .virtual = (unsigned long) MSM_##name##_BASE, \
            .pfn = __phys_to_pfn(MSM_##name##_PHYS), \
            .length = MSM_##name##_SIZE, \
            .type = MT_DEVICE_NONSHARED, \
       }

#if defined(CONFIG_ARCH_MSM7X00A) || defined(CONFIG_ARCH_MSM7X27) \
      || defined(CONFIG_ARCH_MSM7X25)
static struct map_desc msm_io_desc[] __initdata = {
      MSM_DEVICE(VIC),
      MSM_DEVICE(CSR),
      MSM_DEVICE(GPT),
      MSM_DEVICE(DMOV),
      MSM_DEVICE(GPIO1),
      MSM_DEVICE(GPIO2),
      MSM_DEVICE(CLK_CTL),
#ifdef CONFIG_MSM_DEBUG_UART
      MSM_DEVICE(DEBUG_UART),
#endif
#ifdef CONFIG_ARCH_MSM7X30
      MSM_DEVICE(GCC),
#endif
      {
            .virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
            .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
            .length =   MSM_SHARED_RAM_SIZE,
            .type =     MT_DEVICE,
      },
};

void __init msm_map_common_io(void)
{
      /* Make sure the peripheral register window is closed, since
       * we will use PTE flags (TEX[1]=1,B=0,C=1) to determine which
       * pages are peripheral interface or not.
       */
      asm("mcr p15, 0, %0, c15, c2, 4" : : "r" (0));
      iotable_init(msm_io_desc, ARRAY_SIZE(msm_io_desc));
}
#endif

#ifdef CONFIG_ARCH_QSD8X50
static struct map_desc qsd8x50_io_desc[] __initdata = {
      MSM_DEVICE(VIC),
      MSM_DEVICE(CSR),
      MSM_DEVICE(TMR),
      MSM_DEVICE(DMOV),
      MSM_DEVICE(GPIO1),
      MSM_DEVICE(GPIO2),
      MSM_DEVICE(CLK_CTL),
      MSM_DEVICE(SIRC),
      MSM_DEVICE(SCPLL),
      MSM_DEVICE(AD5),
      MSM_DEVICE(MDC),
#ifdef CONFIG_MSM_DEBUG_UART
      MSM_DEVICE(DEBUG_UART),
#endif
      {
            .virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
            .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
            .length =   MSM_SHARED_RAM_SIZE,
            .type =     MT_DEVICE,
      },
};

void __init msm_map_qsd8x50_io(void)
{
      iotable_init(qsd8x50_io_desc, ARRAY_SIZE(qsd8x50_io_desc));
}
#endif /* CONFIG_ARCH_QSD8X50 */

#ifdef CONFIG_ARCH_MSM8X60
static struct map_desc msm8x60_io_desc[] __initdata = {
      MSM_DEVICE(QGIC_DIST),
      MSM_DEVICE(QGIC_CPU),
      MSM_DEVICE(TMR),
      MSM_DEVICE(TMR0),
      MSM_DEVICE(ACC),
      MSM_DEVICE(GCC),
};

void __init msm_map_msm8x60_io(void)
{
      iotable_init(msm8x60_io_desc, ARRAY_SIZE(msm8x60_io_desc));
}
#endif /* CONFIG_ARCH_MSM8X60 */

#ifdef CONFIG_ARCH_MSM7X30
static struct map_desc msm7x30_io_desc[] __initdata = {
      MSM_DEVICE(VIC),
      MSM_DEVICE(CSR),
      MSM_DEVICE(TMR),
      MSM_DEVICE(DMOV),
      MSM_DEVICE(GPIO1),
      MSM_DEVICE(GPIO2),
      MSM_DEVICE(CLK_CTL),
      MSM_DEVICE(CLK_CTL_SH2),
      MSM_DEVICE(AD5),
      MSM_DEVICE(MDC),
      MSM_DEVICE(ACC),
      MSM_DEVICE(SAW),
      MSM_DEVICE(GCC),
      MSM_DEVICE(TCSR),
#ifdef CONFIG_MSM_DEBUG_UART
      MSM_DEVICE(DEBUG_UART),
#endif
      {
            .virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
            .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
            .length =   MSM_SHARED_RAM_SIZE,
            .type =     MT_DEVICE,
      },
};

void __init msm_map_msm7x30_io(void)
{
      iotable_init(msm7x30_io_desc, ARRAY_SIZE(msm7x30_io_desc));
}
#endif /* CONFIG_ARCH_MSM7X30 */

void __iomem *
__msm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
{
      if (mtype == MT_DEVICE) {
            /* The peripherals in the 88000000 - D0000000 range
             * are only accessible by type MT_DEVICE_NONSHARED.
             * Adjust mtype as necessary to make this "just work."
             */
            if ((phys_addr >= 0x88000000) && (phys_addr < 0xD0000000))
                  mtype = MT_DEVICE_NONSHARED;
      }

      return __arm_ioremap_caller(phys_addr, size, mtype,
            __builtin_return_address(0));
}
EXPORT_SYMBOL(__msm_ioremap);

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