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/*
*
* (C) COPYRIGHT 2015 ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the
* GNU General Public License version 2 as published by the Free Software
* Foundation, and any use by you of this program is subject to the terms
* of such GNU licence.
*
* A copy of the licence is included with the program, and can also be obtained
* from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifdef CONFIG_ARM64
#include <mali_kbase.h>
#include <mali_kbase_smc.h>
#include <linux/compiler.h>
static noinline u64 invoke_smc_fid(u64 function_id,
u64 arg0, u64 arg1, u64 arg2)
{
register u64 x0 asm("x0") = function_id;
register u64 x1 asm("x1") = arg0;
register u64 x2 asm("x2") = arg1;
register u64 x3 asm("x3") = arg2;
asm volatile(
__asmeq("%0", "x0")
__asmeq("%1", "x1")
__asmeq("%2", "x2")
__asmeq("%3", "x3")
"smc #0\n"
: "+r" (x0)
: "r" (x1), "r" (x2), "r" (x3));
return x0;
}
u64 kbase_invoke_smc_fid(u32 fid, u64 arg0, u64 arg1, u64 arg2)
{
/* Is fast call (bit 31 set) */
KBASE_DEBUG_ASSERT(fid & ~SMC_FAST_CALL);
/* bits 16-23 must be zero for fast calls */
KBASE_DEBUG_ASSERT((fid & (0xFF << 16)) == 0);
return invoke_smc_fid(fid, arg0, arg1, arg2);
}
u64 kbase_invoke_smc(u32 oen, u16 function_number, bool smc64,
u64 arg0, u64 arg1, u64 arg2)
{
u32 fid = 0;
/* Only the six bits allowed should be used. */
KBASE_DEBUG_ASSERT((oen & ~SMC_OEN_MASK) == 0);
fid |= SMC_FAST_CALL; /* Bit 31: Fast call */
if (smc64)
fid |= SMC_64; /* Bit 30: 1=SMC64, 0=SMC32 */
fid |= oen; /* Bit 29:24: OEN */
/* Bit 23:16: Must be zero for fast calls */
fid |= (function_number); /* Bit 15:0: function number */
return kbase_invoke_smc_fid(fid, arg0, arg1, arg2);
}
#endif /* CONFIG_ARM64 */
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