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lib: utils/ipi: Add FDT based ACLINT MSWI IPI driver

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We add a new FDT based ACLINT MSWI IPI driver which works for both
CLINT device and standalone ACLINT MSWI device.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Xiang W <wxjstz@126.com>
This commit is contained in:
Anup Patel
2021-05-20 14:43:06 +05:30
committed by Anup Patel
parent bd5d2089b8
commit 56fc5f7618
4 changed files with 70 additions and 54 deletions
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4
lib/utils/ipi/fdt_ipi.c
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@@ -12,10 +12,10 @@
#include <sbi_utils/fdt/fdt_helper.h>
#include <sbi_utils/ipi/fdt_ipi.h>
extern struct fdt_ipi fdt_ipi_clint;
extern struct fdt_ipi fdt_ipi_mswi;
static struct fdt_ipi *ipi_drivers[] = {
&fdt_ipi_clint
&fdt_ipi_mswi
};
static struct fdt_ipi dummy = {

51
lib/utils/ipi/fdt_ipi_clint.c
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@@ -1,51 +0,0 @@
/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2020 Western Digital Corporation or its affiliates.
*
* Authors:
* Anup Patel <anup.patel@wdc.com>
*/
#include <sbi/sbi_error.h>
#include <sbi_utils/fdt/fdt_helper.h>
#include <sbi_utils/ipi/fdt_ipi.h>
#include <sbi_utils/sys/clint.h>
#define CLINT_IPI_MAX_NR 16
static unsigned long clint_ipi_count = 0;
static struct clint_data clint_ipi[CLINT_IPI_MAX_NR];
static int ipi_clint_cold_init(void *fdt, int nodeoff,
const struct fdt_match *match)
{
int rc;
unsigned long cisize;
struct clint_data *ci;
if (CLINT_IPI_MAX_NR <= clint_ipi_count)
return SBI_ENOSPC;
ci = &clint_ipi[clint_ipi_count++];
rc = fdt_parse_aclint_node(fdt, nodeoff, false, &ci->addr, &cisize,
&ci->first_hartid, &ci->hart_count);
if (rc)
return rc;
ci->has_64bit_mmio = false;
return clint_cold_ipi_init(ci);
}
static const struct fdt_match ipi_clint_match[] = {
{ .compatible = "riscv,clint0" },
{ .compatible = "sifive,clint0" },
{ },
};
struct fdt_ipi fdt_ipi_clint = {
.match_table = ipi_clint_match,
.cold_init = ipi_clint_cold_init,
.warm_init = clint_warm_ipi_init,
.exit = NULL,
};

67
lib/utils/ipi/fdt_ipi_mswi.c Normal file
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@@ -0,0 +1,67 @@
/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2021 Western Digital Corporation or its affiliates.
*
* Authors:
* Anup Patel <anup.patel@wdc.com>
*/
#include <sbi/sbi_error.h>
#include <sbi_utils/fdt/fdt_helper.h>
#include <sbi_utils/ipi/fdt_ipi.h>
#include <sbi_utils/ipi/aclint_mswi.h>
#define MSWI_MAX_NR 16
static unsigned long mswi_count = 0;
static struct aclint_mswi_data mswi[MSWI_MAX_NR];
static int ipi_mswi_cold_init(void *fdt, int nodeoff,
const struct fdt_match *match)
{
int rc;
unsigned long offset;
struct aclint_mswi_data *ms;
if (MSWI_MAX_NR <= mswi_count)
return SBI_ENOSPC;
ms = &mswi[mswi_count];
rc = fdt_parse_aclint_node(fdt, nodeoff, false, &ms->addr, &ms->size,
&ms->first_hartid, &ms->hart_count);
if (rc)
return rc;
if (match->data) {
/* Adjust MSWI address and size for CLINT device */
offset = *((unsigned long *)match->data);
ms->addr += offset;
if ((ms->size - offset) < ACLINT_MSWI_SIZE)
return SBI_EINVAL;
ms->size = ACLINT_MSWI_SIZE;
}
rc = aclint_mswi_cold_init(ms);
if (rc)
return rc;
mswi_count++;
return 0;
}
static unsigned long clint_offset = CLINT_MSWI_OFFSET;
static const struct fdt_match ipi_mswi_match[] = {
{ .compatible = "riscv,clint0", .data = &clint_offset },
{ .compatible = "sifive,clint0", .data = &clint_offset },
{ .compatible = "riscv,aclint-mswi" },
{ },
};
struct fdt_ipi fdt_ipi_mswi = {
.match_table = ipi_mswi_match,
.cold_init = ipi_mswi_cold_init,
.warm_init = aclint_mswi_warm_init,
.exit = NULL,
};

2
lib/utils/ipi/objects.mk
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@@ -9,4 +9,4 @@
libsbiutils-objs-y += ipi/aclint_mswi.o
libsbiutils-objs-y += ipi/fdt_ipi.o
libsbiutils-objs-y += ipi/fdt_ipi_clint.o
libsbiutils-objs-y += ipi/fdt_ipi_mswi.o