pcie_layerscape_fixup_common.c
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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2019-2020 NXP
*
* PCIe DT fixup for NXP Layerscape SoCs
* Author: Wasim Khan <wasim.khan@nxp.com>
*
*/
#include <common.h>
#include <asm/arch/clock.h>
#include <asm/arch/soc.h>
#include "pcie_layerscape_fixup_common.h"
void ft_pci_setup(void *blob, bd_t *bd)
{
#if defined(CONFIG_PCIE_LAYERSCAPE_GEN4)
uint svr;
svr = SVR_SOC_VER(get_svr());
if (svr == SVR_LX2160A && IS_SVR_REV(get_svr(), 1, 0))
ft_pci_setup_ls_gen4(blob, bd);
else
#endif /* CONFIG_PCIE_LAYERSCAPE_GEN4 */
ft_pci_setup_ls(blob, bd);
}
#if defined(CONFIG_FSL_LAYERSCAPE)
int lx2_board_fix_fdt(void *fdt)
{
char *reg_name, *old_str, *new_str;
const char *reg_names;
int names_len, old_str_len, new_str_len, remaining_str_len;
struct str_map {
char *old_str;
char *new_str;
} reg_names_map[] = {
{ "csr_axi_slave", "regs" },
{ "config_axi_slave", "config" }
};
int off = -1, i;
const fdt32_t *prop;
u32 ob_wins, ib_wins;
off = fdt_node_offset_by_compatible(fdt, -1, "fsl,lx2160a-pcie");
while (off != -FDT_ERR_NOTFOUND) {
fdt_setprop(fdt, off, "compatible", "fsl,ls2088a-pcie",
strlen("fsl,ls2088a-pcie") + 1);
reg_names = fdt_getprop(fdt, off, "reg-names", &names_len);
if (!reg_names)
continue;
reg_name = (char *)reg_names;
remaining_str_len = names_len - (reg_name - reg_names);
i = 0;
while ((i < ARRAY_SIZE(reg_names_map)) && remaining_str_len) {
old_str = reg_names_map[i].old_str;
new_str = reg_names_map[i].new_str;
old_str_len = strlen(old_str);
new_str_len = strlen(new_str);
if (memcmp(reg_name, old_str, old_str_len) == 0) {
/* first only leave required bytes for new_str
* and copy rest of the string after it
*/
memcpy(reg_name + new_str_len,
reg_name + old_str_len,
remaining_str_len - old_str_len);
/* Now copy new_str */
memcpy(reg_name, new_str, new_str_len);
names_len -= old_str_len;
names_len += new_str_len;
i++;
}
reg_name = memchr(reg_name, '\0', remaining_str_len);
if (!reg_name)
break;
reg_name += 1;
remaining_str_len = names_len - (reg_name - reg_names);
}
fdt_setprop(fdt, off, "reg-names", reg_names, names_len);
fdt_delprop(fdt, off, "apio-wins");
fdt_delprop(fdt, off, "ppio-wins");
off = fdt_node_offset_by_compatible(fdt, off,
"fsl,lx2160a-pcie");
}
/* Fixup PCIe EP nodes */
off = -1;
off = fdt_node_offset_by_compatible(fdt, off, "fsl,lx2160a-pcie-ep");
while (off != -FDT_ERR_NOTFOUND) {
fdt_setprop_string(fdt, off, "compatible",
"fsl,lx2160ar2-pcie-ep");
prop = fdt_getprop(fdt, off, "apio-wins", NULL);
if (!prop) {
printf("%s: Failed to fixup PCIe EP node @0x%x\n",
__func__, off);
continue;
}
ob_wins = fdt32_to_cpu(*prop);
ib_wins = (ob_wins == 256) ? 24 : 8;
fdt_setprop_u32(fdt, off, "num-ib-windows", ib_wins);
fdt_setprop_u32(fdt, off, "num-ob-windows", ob_wins);
fdt_delprop(fdt, off, "apio-wins");
off = fdt_node_offset_by_compatible(fdt, off,
"fsl,lx2160a-pcie-ep");
}
return 0;
}
int pcie_board_fix_fdt(void *fdt)
{
uint svr;
svr = SVR_SOC_VER(get_svr());
if ((svr == SVR_LX2160A || svr == SVR_LX2162A ||
svr == SVR_LX2120A || svr == SVR_LX2080A ||
svr == SVR_LX2122A || svr == SVR_LX2082A) &&
IS_SVR_REV(get_svr(), 2, 0))
return lx2_board_fix_fdt(fdt);
return 0;
}
#if defined(CONFIG_ARCH_LX2160A) || defined(CONFIG_ARCH_LX2162A)
/* returns the next available streamid for pcie, -errno if failed */
int pcie_next_streamid(int currentid, int idx)
{
if (currentid > FSL_PEX_STREAM_ID_END)
return -EINVAL;
return currentid | ((idx + 1) << 11);
}
#else
/* returns the next available streamid for pcie, -errno if failed */
int pcie_next_streamid(int currentid, int idx)
{
static int next_stream_id = FSL_PEX_STREAM_ID_START;
if (next_stream_id > FSL_PEX_STREAM_ID_END)
return -EINVAL;
return next_stream_id++;
}
#endif
#endif /* CONFIG_FSL_LAYERSCAPE */