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drivers/fsl-mc: dynamically create ICID pool in DPC

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delete any existing ICID pools in the DPC and create
a new one based on the stream ID partitioning for
the SoC

Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
This commit is contained in:
Stuart Yoder 2015-07-02 11:29:03 +05:30 committed by York Sun
parent 39da644ea8
commit 21c6987067
1 changed files with 36 additions and 0 deletions
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36
drivers/net/fsl-mc/mc.c
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@ -3,8 +3,11 @@
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <errno.h>
#include <asm/io.h>
#include <libfdt.h>
#include <fdt_support.h>
#include <fsl-mc/fsl_mc.h>
#include <fsl-mc/fsl_mc_sys.h>
#include <fsl-mc/fsl_mc_private.h>
@ -185,6 +188,36 @@ static int calculate_mc_private_ram_params(u64 mc_private_ram_start_addr,
return 0;
}
static int mc_fixup_dpc(u64 dpc_addr)
{
void *blob = (void *)dpc_addr;
int nodeoffset;
/* delete any existing ICID pools */
nodeoffset = fdt_path_offset(blob, "/resources/icid_pools");
if (fdt_del_node(blob, nodeoffset) < 0)
printf("\nfsl-mc: WARNING: could not delete ICID pool\n");
/* add a new pool */
nodeoffset = fdt_path_offset(blob, "/resources");
if (nodeoffset < 0) {
printf("\nfsl-mc: ERROR: DPC is missing /resources\n");
return -EINVAL;
}
nodeoffset = fdt_add_subnode(blob, nodeoffset, "icid_pools");
nodeoffset = fdt_add_subnode(blob, nodeoffset, "icid_pool@0");
do_fixup_by_path_u32(blob, "/resources/icid_pools/icid_pool@0",
"base_icid", FSL_DPAA2_STREAM_ID_START, 1);
do_fixup_by_path_u32(blob, "/resources/icid_pools/icid_pool@0",
"num",
FSL_DPAA2_STREAM_ID_END -
FSL_DPAA2_STREAM_ID_START + 1, 1);
flush_dcache_range(dpc_addr, dpc_addr + fdt_totalsize(blob));
return 0;
}
static int load_mc_dpc(u64 mc_ram_addr, size_t mc_ram_size)
{
u64 mc_dpc_offset;
@ -239,6 +272,9 @@ static int load_mc_dpc(u64 mc_ram_addr, size_t mc_ram_size)
(u64)dpc_fdt_hdr, dpc_size, mc_ram_addr + mc_dpc_offset);
#endif /* not defined CONFIG_SYS_LS_MC_DPC_IN_DDR */
if (mc_fixup_dpc(mc_ram_addr + mc_dpc_offset))
return -EINVAL;
dump_ram_words("DPC", (void *)(mc_ram_addr + mc_dpc_offset));
return 0;
}