151 lines
3.7 KiB
C
151 lines
3.7 KiB
C
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
|
|
/* Copyright (C) 2018 Netronome Systems, Inc. */
|
|
|
|
#include <linux/kernel.h>
|
|
#include <net/devlink.h>
|
|
|
|
#include "nfpcore/nfp_cpp.h"
|
|
#include "nfpcore/nfp_nffw.h"
|
|
#include "nfp_abi.h"
|
|
#include "nfp_app.h"
|
|
#include "nfp_main.h"
|
|
|
|
static u32 nfp_shared_buf_pool_unit(struct nfp_pf *pf, unsigned int sb)
|
|
{
|
|
__le32 sb_id = cpu_to_le32(sb);
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < pf->num_shared_bufs; i++)
|
|
if (pf->shared_bufs[i].id == sb_id)
|
|
return le32_to_cpu(pf->shared_bufs[i].pool_size_unit);
|
|
|
|
WARN_ON_ONCE(1);
|
|
return 0;
|
|
}
|
|
|
|
int nfp_shared_buf_pool_get(struct nfp_pf *pf, unsigned int sb, u16 pool_index,
|
|
struct devlink_sb_pool_info *pool_info)
|
|
{
|
|
struct nfp_shared_buf_pool_info_get get_data;
|
|
struct nfp_shared_buf_pool_id id = {
|
|
.shared_buf = cpu_to_le32(sb),
|
|
.pool = cpu_to_le32(pool_index),
|
|
};
|
|
unsigned int unit_size;
|
|
int n;
|
|
|
|
unit_size = nfp_shared_buf_pool_unit(pf, sb);
|
|
if (!unit_size)
|
|
return -EINVAL;
|
|
|
|
n = nfp_mbox_cmd(pf, NFP_MBOX_POOL_GET, &id, sizeof(id),
|
|
&get_data, sizeof(get_data));
|
|
if (n < 0)
|
|
return n;
|
|
if (n < sizeof(get_data))
|
|
return -EIO;
|
|
|
|
pool_info->pool_type = le32_to_cpu(get_data.pool_type);
|
|
pool_info->threshold_type = le32_to_cpu(get_data.threshold_type);
|
|
pool_info->size = le32_to_cpu(get_data.size) * unit_size;
|
|
pool_info->cell_size = unit_size;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int nfp_shared_buf_pool_set(struct nfp_pf *pf, unsigned int sb,
|
|
u16 pool_index, u32 size,
|
|
enum devlink_sb_threshold_type threshold_type)
|
|
{
|
|
struct nfp_shared_buf_pool_info_set set_data = {
|
|
.id = {
|
|
.shared_buf = cpu_to_le32(sb),
|
|
.pool = cpu_to_le32(pool_index),
|
|
},
|
|
.threshold_type = cpu_to_le32(threshold_type),
|
|
};
|
|
unsigned int unit_size;
|
|
|
|
unit_size = nfp_shared_buf_pool_unit(pf, sb);
|
|
if (!unit_size || size % unit_size)
|
|
return -EINVAL;
|
|
set_data.size = cpu_to_le32(size / unit_size);
|
|
|
|
return nfp_mbox_cmd(pf, NFP_MBOX_POOL_SET, &set_data, sizeof(set_data),
|
|
NULL, 0);
|
|
}
|
|
|
|
int nfp_shared_buf_register(struct nfp_pf *pf)
|
|
{
|
|
struct devlink *devlink = priv_to_devlink(pf);
|
|
unsigned int i, num_entries, entry_sz;
|
|
struct nfp_cpp_area *sb_desc_area;
|
|
u8 __iomem *sb_desc;
|
|
int n, err;
|
|
|
|
if (!pf->mbox)
|
|
return 0;
|
|
|
|
n = nfp_pf_rtsym_read_optional(pf, NFP_SHARED_BUF_COUNT_SYM_NAME, 0);
|
|
if (n <= 0)
|
|
return n;
|
|
num_entries = n;
|
|
|
|
sb_desc = nfp_pf_map_rtsym(pf, "sb_tbl", NFP_SHARED_BUF_TABLE_SYM_NAME,
|
|
num_entries * sizeof(pf->shared_bufs[0]),
|
|
&sb_desc_area);
|
|
if (IS_ERR(sb_desc))
|
|
return PTR_ERR(sb_desc);
|
|
|
|
entry_sz = nfp_cpp_area_size(sb_desc_area) / num_entries;
|
|
|
|
pf->shared_bufs = kmalloc_array(num_entries, sizeof(pf->shared_bufs[0]),
|
|
GFP_KERNEL);
|
|
if (!pf->shared_bufs) {
|
|
err = -ENOMEM;
|
|
goto err_release_area;
|
|
}
|
|
|
|
for (i = 0; i < num_entries; i++) {
|
|
struct nfp_shared_buf *sb = &pf->shared_bufs[i];
|
|
|
|
/* Entries may be larger in future FW */
|
|
memcpy_fromio(sb, sb_desc + i * entry_sz, sizeof(*sb));
|
|
|
|
err = devlink_sb_register(devlink,
|
|
le32_to_cpu(sb->id),
|
|
le32_to_cpu(sb->size),
|
|
le16_to_cpu(sb->ingress_pools_count),
|
|
le16_to_cpu(sb->egress_pools_count),
|
|
le16_to_cpu(sb->ingress_tc_count),
|
|
le16_to_cpu(sb->egress_tc_count));
|
|
if (err)
|
|
goto err_unreg_prev;
|
|
}
|
|
pf->num_shared_bufs = num_entries;
|
|
|
|
nfp_cpp_area_release_free(sb_desc_area);
|
|
|
|
return 0;
|
|
|
|
err_unreg_prev:
|
|
while (i--)
|
|
devlink_sb_unregister(devlink,
|
|
le32_to_cpu(pf->shared_bufs[i].id));
|
|
kfree(pf->shared_bufs);
|
|
err_release_area:
|
|
nfp_cpp_area_release_free(sb_desc_area);
|
|
return err;
|
|
}
|
|
|
|
void nfp_shared_buf_unregister(struct nfp_pf *pf)
|
|
{
|
|
struct devlink *devlink = priv_to_devlink(pf);
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < pf->num_shared_bufs; i++)
|
|
devlink_sb_unregister(devlink,
|
|
le32_to_cpu(pf->shared_bufs[i].id));
|
|
kfree(pf->shared_bufs);
|
|
}
|