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/*
* ION Initialization for OMAP4.
*
* Copyright (C) 2011 Texas Instruments
*
* Author: Dan Murphy <dmurphy@ti.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/ion.h>
#include <linux/memblock.h>
#include <linux/omap_ion.h>
#include <linux/platform_device.h>
#include <mach/omap4_ion.h>
static struct ion_platform_data omap4_ion_data = {
.nr = 5,
.heaps = {
{
.type = ION_HEAP_TYPE_CARVEOUT,
.id = OMAP_ION_HEAP_SECURE_INPUT,
.name = "secure_input",
.base = PHYS_ADDR_SMC_MEM,
.size = -1,
},
{ .type = OMAP_ION_HEAP_TYPE_TILER,
.id = OMAP_ION_HEAP_TILER,
.name = "tiler",
.base = PHYS_ADDR_DUCATI_MEM,
.size = -1,
},
{
.type = OMAP_ION_HEAP_TYPE_TILER,
.id = OMAP_ION_HEAP_NONSECURE_TILER,
.name = "nonsecure_tiler",
.base = 0, /* append before prior */
.size = -1,
},
{
.type = ION_HEAP_TYPE_SYSTEM,
.id = OMAP_ION_HEAP_SYSTEM,
.name = "system",
},
{
.type = OMAP_ION_HEAP_TYPE_TILER_RESERVATION,
.id = OMAP_ION_HEAP_TILER_RESERVATION,
.name = "tiler_reservation",
},
},
};
static struct omap_ion_platform_data omap4_ion_pdata = {
.ion = &omap4_ion_data,
.tiler2d_size = OMAP4_ION_HEAP_TILER_SIZE,
.nonsecure_tiler2d_size = OMAP4_ION_HEAP_NONSECURE_TILER_SIZE,
};
static struct platform_device omap4_ion_device = {
.name = "ion-omap4",
.id = -1,
.dev = {
.platform_data = &omap4_ion_data,
},
};
struct omap_ion_platform_data *get_omap_ion_platform_data(void)
{
return &omap4_ion_pdata;
}
void __init omap4_register_ion(void)
{
platform_device_register(&omap4_ion_device);
}
void __init omap_ion_init(void)
{
int i;
int ret;
u32 nonsecure = omap4_ion_pdata.nonsecure_tiler2d_size;
for (i = 0; i < omap4_ion_data.nr; i++) {
struct ion_platform_heap *h = &omap4_ion_data.heaps[i];
bool backward = 0 > (s32) h->size;
if (backward)
h->size = -h->size;
if (h->base == 0)
/* continue after/before previous heap */
h->base = h[-1].base + (backward ? 0 : h[-1].size);
switch (h->id) {
case OMAP_ION_HEAP_SECURE_INPUT:
h->size = OMAP4_ION_HEAP_SECURE_INPUT_SIZE;
break;
case OMAP_ION_HEAP_NONSECURE_TILER:
h->size = nonsecure;
break;
case OMAP_ION_HEAP_TILER:
/* total TILER carveouts must be aligned to 2M */
h->size = ALIGN(omap4_ion_pdata.tiler2d_size +
nonsecure, SZ_2M) - nonsecure;
break;
default:
break;
}
if (backward)
h->base -= h->size;
pr_info("%s: id=%u [%lx-%lx] size=%x\n", __func__, h->id,
h->base, h->base + h->size, h->size);
}
for (i = 0; i < omap4_ion_data.nr; i++)
if (omap4_ion_data.heaps[i].type == ION_HEAP_TYPE_CARVEOUT ||
omap4_ion_data.heaps[i].type == OMAP_ION_HEAP_TYPE_TILER) {
ret = memblock_remove(omap4_ion_data.heaps[i].base,
omap4_ion_data.heaps[i].size);
if (ret)
pr_err("memblock remove of %x@%lx failed\n",
omap4_ion_data.heaps[i].size,
omap4_ion_data.heaps[i].base);
}
}
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