android_kernel_xiaomi_sm8350/arch/arm/mach-msm/io.c
Brian Swetland bcc0f6af07 [ARM] msm: clean up iomap and devices
- Add some more peripherals (sdcc, etc) to the iomap.
- Remove virtual base addresses for devices that we should be passing
  physical addresses to drivers via resources and ioremap()ing.
- don't try to use uarts for ll debug once the mmu is enabled due to
  problems with the peripheral window
- make base addresses void __iomem * and fixup irq.c and timer.c
- Remove common.c and bring in devices.c/devices.h similar to
  the PXA architecture.

Signed-off-by: Brian Swetland <swetland@google.com>
2008-10-22 02:40:59 -07:00

78 lines
2.1 KiB
C

/* arch/arm/mach-msm/io.c
*
* MSM7K io support
*
* Copyright (C) 2007 Google, Inc.
* 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, \
}
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),
{
.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));
}
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 accessable 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(phys_addr, size, mtype);
}