linux/arch/blackfin/mach-common/cache-c.c
Robin Getz 96f1050d3d Blackfin: mass clean up of copyright/licensing info
Bill Gatliff & David Brownell pointed out we were missing some
copyrights, and licensing terms in some of the files in
./arch/blackfin, so this fixes things, and cleans them up.

It also removes:
 - verbose GPL text(refer to the top level ./COPYING file)
 - file names (you are looking at the file)
 - bug url (it's in the ./MAINTAINERS file)
 - "or later" on GPL-2, when we did not have that right

It also allows some Blackfin-specific assembly files to be under a BSD
like license (for people to use them outside of Linux).

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-10-07 04:36:26 -04:00

76 lines
1.8 KiB
C

/*
* Blackfin cache control code (simpler control-style functions)
*
* Copyright 2004-2009 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#include <linux/init.h>
#include <asm/blackfin.h>
#include <asm/cplbinit.h>
/* Invalidate the Entire Data cache by
* clearing DMC[1:0] bits
*/
void blackfin_invalidate_entire_dcache(void)
{
u32 dmem = bfin_read_DMEM_CONTROL();
bfin_write_DMEM_CONTROL(dmem & ~0xc);
SSYNC();
bfin_write_DMEM_CONTROL(dmem);
SSYNC();
}
/* Invalidate the Entire Instruction cache by
* clearing IMC bit
*/
void blackfin_invalidate_entire_icache(void)
{
u32 imem = bfin_read_IMEM_CONTROL();
bfin_write_IMEM_CONTROL(imem & ~0x4);
SSYNC();
bfin_write_IMEM_CONTROL(imem);
SSYNC();
}
#if defined(CONFIG_BFIN_ICACHE) || defined(CONFIG_BFIN_DCACHE)
static void
bfin_cache_init(struct cplb_entry *cplb_tbl, unsigned long cplb_addr,
unsigned long cplb_data, unsigned long mem_control,
unsigned long mem_mask)
{
int i;
for (i = 0; i < MAX_CPLBS; i++) {
bfin_write32(cplb_addr + i * 4, cplb_tbl[i].addr);
bfin_write32(cplb_data + i * 4, cplb_tbl[i].data);
}
_enable_cplb(mem_control, mem_mask);
}
#ifdef CONFIG_BFIN_ICACHE
void __cpuinit bfin_icache_init(struct cplb_entry *icplb_tbl)
{
bfin_cache_init(icplb_tbl, ICPLB_ADDR0, ICPLB_DATA0, IMEM_CONTROL,
(IMC | ENICPLB));
}
#endif
#ifdef CONFIG_BFIN_DCACHE
void __cpuinit bfin_dcache_init(struct cplb_entry *dcplb_tbl)
{
/*
* Anomaly notes:
* 05000287 - We implement workaround #2 - Change the DMEM_CONTROL
* register, so that the port preferences for DAG0 and DAG1 are set
* to port B
*/
bfin_cache_init(dcplb_tbl, DCPLB_ADDR0, DCPLB_DATA0, DMEM_CONTROL,
(DMEM_CNTR | PORT_PREF0 | (ANOMALY_05000287 ? PORT_PREF1 : 0)));
}
#endif
#endif