linux/arch/arm/mach-msm/io.c
Arnd Bergmann d967b0100f ARM: msm: avoid calling debug_ll_addr on !MMU
MSM7X00A has an open-coded version of debug_ll_io_init so it
can use MT_DEVICE_NONSHARED as required by the platform.

However, this fails to build on no-MMU kernels because the
debug_ll_addr function is not available. Since the iotable_init
function doesn't actually do anyting in this configuration,
we can simply get away by enclosing the broken function call
in an #ifdef, which seems to be the least ugly workaround.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: David Brown <davidb@codeaurora.org>
Cc: Daniel Walker <dwalker@fifo99.com>
Cc: Bryan Huntsman <bryanh@codeaurora.org>
2014-03-21 18:23:31 +01:00

164 lines
4.6 KiB
C

/* arch/arm/mach-msm/io.c
*
* MSM7K, QSD io support
*
* Copyright (C) 2007 Google, Inc.
* Copyright (c) 2008-2011, 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/bug.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/export.h>
#include <mach/hardware.h>
#include <asm/page.h>
#include <mach/msm_iomap.h>
#include <asm/mach/map.h>
#include "common.h"
#define MSM_CHIP_DEVICE_TYPE(name, chip, mem_type) { \
.virtual = (unsigned long) MSM_##name##_BASE, \
.pfn = __phys_to_pfn(chip##_##name##_PHYS), \
.length = chip##_##name##_SIZE, \
.type = mem_type, \
}
#define MSM_DEVICE_TYPE(name, mem_type) \
MSM_CHIP_DEVICE_TYPE(name, MSM, mem_type)
#define MSM_CHIP_DEVICE(name, chip) \
MSM_CHIP_DEVICE_TYPE(name, chip, MT_DEVICE)
#define MSM_DEVICE(name) MSM_CHIP_DEVICE(name, MSM)
#if defined(CONFIG_ARCH_MSM7X00A)
static struct map_desc msm_io_desc[] __initdata = {
MSM_DEVICE_TYPE(VIC, MT_DEVICE_NONSHARED),
MSM_CHIP_DEVICE_TYPE(CSR, MSM7X00, MT_DEVICE_NONSHARED),
MSM_DEVICE_TYPE(DMOV, MT_DEVICE_NONSHARED),
MSM_CHIP_DEVICE_TYPE(GPIO1, MSM7X00, MT_DEVICE_NONSHARED),
MSM_CHIP_DEVICE_TYPE(GPIO2, MSM7X00, MT_DEVICE_NONSHARED),
MSM_DEVICE_TYPE(CLK_CTL, MT_DEVICE_NONSHARED),
{
.virtual = (unsigned long) MSM_SHARED_RAM_BASE,
.pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
.length = MSM_SHARED_RAM_SIZE,
.type = MT_DEVICE,
},
#if defined(CONFIG_DEBUG_MSM_UART1) || defined(CONFIG_DEBUG_MSM_UART2) || \
defined(CONFIG_DEBUG_MSM_UART3)
{
/* Must be last: virtual and pfn filled in by debug_ll_addr() */
.length = SZ_4K,
.type = MT_DEVICE_NONSHARED,
}
#endif
};
void __init msm_map_common_io(void)
{
size_t size = ARRAY_SIZE(msm_io_desc);
/* 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));
#if defined(CONFIG_DEBUG_MSM_UART1) || defined(CONFIG_DEBUG_MSM_UART2) || \
defined(CONFIG_DEBUG_MSM_UART3)
#ifdef CONFIG_MMU
debug_ll_addr(&msm_io_desc[size - 1].pfn,
&msm_io_desc[size - 1].virtual);
#endif
msm_io_desc[size - 1].pfn = __phys_to_pfn(msm_io_desc[size - 1].pfn);
#endif
iotable_init(msm_io_desc, size);
}
#endif
#ifdef CONFIG_ARCH_QSD8X50
static struct map_desc qsd8x50_io_desc[] __initdata = {
MSM_DEVICE(VIC),
MSM_CHIP_DEVICE(CSR, QSD8X50),
MSM_DEVICE(DMOV),
MSM_CHIP_DEVICE(GPIO1, QSD8X50),
MSM_CHIP_DEVICE(GPIO2, QSD8X50),
MSM_DEVICE(CLK_CTL),
MSM_DEVICE(SIRC),
MSM_DEVICE(SCPLL),
MSM_DEVICE(AD5),
MSM_DEVICE(MDC),
{
.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)
{
debug_ll_io_init();
iotable_init(qsd8x50_io_desc, ARRAY_SIZE(qsd8x50_io_desc));
}
#endif /* CONFIG_ARCH_QSD8X50 */
#ifdef CONFIG_ARCH_MSM7X30
static struct map_desc msm7x30_io_desc[] __initdata = {
MSM_DEVICE(VIC),
MSM_CHIP_DEVICE(CSR, MSM7X30),
MSM_DEVICE(DMOV),
MSM_CHIP_DEVICE(GPIO1, MSM7X30),
MSM_CHIP_DEVICE(GPIO2, MSM7X30),
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),
{
.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)
{
debug_ll_io_init();
iotable_init(msm7x30_io_desc, ARRAY_SIZE(msm7x30_io_desc));
}
#endif /* CONFIG_ARCH_MSM7X30 */
#ifdef CONFIG_ARCH_MSM7X00A
void __iomem *__msm_ioremap_caller(phys_addr_t phys_addr, size_t size,
unsigned int mtype, void *caller)
{
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, caller);
}
#endif