// SPDX-License-Identifier: GPL-2.0
/* Marvell OcteonTX CPT driver
*
* Copyright (C) 2019 Marvell International Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/ctype.h>
#include <linux/firmware.h>
#include "otx_cpt_common.h"
#include "otx_cptpf_ucode.h"
#include "otx_cptpf.h"
#define CSR_DELAY 30
/* Tar archive defines */
#define TAR_MAGIC "ustar"
#define TAR_MAGIC_LEN 6
#define TAR_BLOCK_LEN 512
#define REGTYPE '0'
#define AREGTYPE '\0'
/* tar header as defined in POSIX 1003.1-1990. */
struct tar_hdr_t {
char name[100];
char mode[8];
char uid[8];
char gid[8];
char size[12];
char mtime[12];
char chksum[8];
char typeflag;
char linkname[100];
char magic[6];
char version[2];
char uname[32];
char gname[32];
char devmajor[8];
char devminor[8];
char prefix[155];
};
struct tar_blk_t {
union {
struct tar_hdr_t hdr;
char block[TAR_BLOCK_LEN];
};
};
struct tar_arch_info_t {
struct list_head ucodes;
const struct firmware *fw;
};
static struct otx_cpt_bitmap get_cores_bmap(struct device *dev,
struct otx_cpt_eng_grp_info *eng_grp)
{
struct otx_cpt_bitmap bmap = { {0} };
bool found = false;
int i;
if (eng_grp->g->engs_num > OTX_CPT_MAX_ENGINES) {
dev_err(dev, "unsupported number of engines %d on octeontx\n",
eng_grp->g->engs_num);
return bmap;
}
for (i = 0; i < OTX_CPT_MAX_ETYPES_PER_GRP; i++) {
if (eng_grp->engs[i].type) {
bitmap_or(bmap.bits, bmap.bits,
eng_grp->engs[i].bmap,
eng_grp->g->engs_num);
bmap.size = eng_grp->g->engs_num;
found = true;
}
}
if (!found)
dev_err(dev, "No engines reserved for engine group %d\n",
eng_grp->idx);
return bmap;
}
static int is_eng_type(int val, int eng_type)
{
return val & (1 << eng_type);
}
static int dev_supports_eng_type(struct otx_cpt_eng_grps *eng_grps,
int eng_type)
{
return is_eng_type(eng_grps->eng_types_supported, eng_type);
}
static void set_ucode_filename(struct otx_cpt_ucode *ucode,
const char *filename)
{
strscpy(ucode->filename, filename, OTX_CPT_UCODE_NAME_LENGTH);
}
static char *get_eng_type_str(int eng_type)
{
char *str = "unknown";
switch (eng_type) {
case OTX_CPT_SE_TYPES:
str = "SE";
break;
case OTX_CPT_AE_TYPES:
str = "AE";
break;
}
return str;
}
static char *get_ucode_type_str(int ucode_type)
{
char *str = "unknown";
switch (ucode_type) {
case (1 << OTX_CPT_SE_TYPES):
str = "SE";
break;
case (1 << OTX_CPT_AE_TYPES):
str = "AE";
break;
}
return str;
}
static int get_ucode_type(struct otx_cpt_ucode_hdr *ucode_hdr, int *ucode_type)
{
char tmp_ver_str[OTX_CPT_UCODE_VER_STR_SZ];
u32 i, val = 0;
u8 nn;
strscpy(tmp_ver_str, ucode_hdr->ver_str, OTX_CPT_UCODE_VER_STR_SZ);
for (i = 0; i < strlen(tmp_ver_str); i++)
tmp_ver_str[i] = tolower(tmp_ver_str[i]);
nn = ucode_hdr->ver_num.nn;
if (strnstr(tmp_ver_str, "se-", OTX_CPT_UCODE_VER_STR_SZ) &&
(nn == OTX_CPT_SE_UC_TYPE1 || nn == OTX_CPT_SE_UC_TYPE2 ||
nn == OTX_CPT_SE_UC_TYPE3))
val |= 1 << OTX_CPT_SE_TYPES;
if (strnstr(tmp_ver_str, "ae", OTX_CPT_UCODE_VER_STR_SZ) &&
nn == OTX_CPT_AE_UC_TYPE)
val |= 1 << OTX_CPT_AE_TYPES;
*ucode_type = val;
if (!val)
return -EINVAL;
if (is_eng_type(val, OTX_CPT_AE_TYPES) &&
is_eng_type(val, OTX_CPT_SE_TYPES))
return -EINVAL;
return 0;
}
static int is_mem_zero(const char *ptr, int size)
{
int i;
for (i = 0; i < size; i++) {
if (ptr[i])
return 0;
}
return 1;
}
static int cpt_set_ucode_base(struct otx_cpt_eng_grp_info *eng_grp, void *obj)
{
struct otx_cpt_device *cpt = (struct otx_cpt_device *) obj;
dma_addr_t dma_addr;
struct otx_cpt_bitmap bmap;
int i;
bmap = get_cores_bmap(&cpt->pdev->dev, eng_grp);
if (!bmap.size)
return -EINVAL;
if (eng_grp->mirror.is_ena)
dma_addr =
eng_grp->g->grp[eng_grp->mirror.idx].ucode[0].align_dma;
else
dma_addr = eng_grp->ucode[0].align_dma;
/*
* Set UCODE_BASE only for the cores which are not used,
* other cores should have already valid UCODE_BASE set
*/
for_each_set_bit(i, bmap.bits, bmap.size)
if (!eng_grp->g->eng_ref_cnt[i])
writeq((u64) dma_addr, cpt->reg_base +
OTX_CPT_PF_ENGX_UCODE_BASE(i));
return 0;
}
static int cpt_detach_and_disable_cores(struct otx_cpt_eng_grp_info *eng_grp,
void *obj)
{
struct otx_cpt_device *cpt = (struct otx_cpt_device *) obj;
struct otx_cpt_bitmap bmap = { {0} };
int timeout = 10;
int i, busy;
u64 reg;
bmap = get_cores_bmap(&cpt->pdev->dev, eng_grp);
if (!bmap.size)
return -EINVAL;
/* Detach the cores from group */
reg = readq(cpt->reg_base + OTX_CPT_PF_GX_EN(eng_grp->idx));
for_each_set_bit(i, bmap.bits, bmap.size) {
if (reg & (1ull << i)) {
eng_grp->g->eng_ref_cnt[i]--;
reg &= ~(1ull << i);
}
}
writeq(reg, cpt->reg_base + OTX_CPT_PF_GX_EN(eng_grp->idx));
/* Wait for cores to become idle */
do {
busy = 0;
usleep_range(10000, 20000);
if (timeout-- < 0)
return -EBUSY;
reg = readq(cpt->reg_base + OTX_CPT_PF_EXEC_BUSY);
for_each_set_bit(i, bmap.bits, bmap.size)
if (reg & (1ull << i)) {
busy = 1;
break;
}
} while (busy);
/* Disable the cores only if they are not used anymore */
reg = readq(cpt->reg_base + OTX_CPT_PF_EXE_CTL);
for_each_set_bit(i, bmap.bits, bmap.size)
if (!eng_grp->g->eng_ref_cnt[i])
reg &= ~(1ull << i);
writeq(reg, cpt->reg_base + OTX_CPT_PF_EXE_CTL);
return 0;
}
static int cpt_attach_and_enable_cores(struct otx_cpt_eng_grp_info *eng_grp,
void *obj)
{
struct otx_cpt_device *cpt = (struct otx_cpt_device *) obj;
struct otx_cpt_bitmap bmap;
u64 reg;
int i;
bmap = get_cores_bmap(&cpt->pdev->dev, eng_grp);
if (!bmap.size)
return -EINVAL;
/* Attach the cores to the group */
reg = readq(cpt->reg_base + OTX_CPT_PF_GX_EN(eng_grp->idx));
for_each_set_bit(i, bmap.bits, bmap.size) {
if (!(reg & (1ull << i))) {
eng_grp->g->eng_ref_cnt[i]++;
reg |= 1ull << i;
}
}
writeq(reg, cpt->reg_base + OTX_CPT_PF_GX_EN(eng_grp->idx));
/* Enable the cores */
reg = readq(cpt->reg_base + OTX_CPT_PF_EXE_CTL);
for_each_set_bit(i, bmap.bits, bmap.size)
reg |= 1ull << i;
writeq(reg, cpt->reg_base + OTX_CPT_PF_EXE_CTL);
return 0;
}
static int process_tar_file(struct device *dev,
struct tar_arch_info_t *tar_arch, char *filename,
const u8 *data, u32 size)
{
struct tar_ucode_info_t *tar_info;
struct otx_cpt_ucode_hdr *ucode_hdr;
int ucode_type, ucode_size;
unsigned int code_length;
/*
* If size is less than microcode header size then don't report
* an error because it might not be microcode file, just process
* next file from archive
*/
if (size < sizeof(struct otx_cpt_ucode_hdr))
return 0;
ucode_hdr = (struct otx_cpt_ucode_hdr *) data;
/*
* If microcode version can't be found don't report an error
* because it might not be microcode file, just process next file
*/
if (get_ucode_type(ucode_hdr, &ucode_type))
return 0;
code_length = ntohl(ucode_hdr->code_length);
if (code_length >= INT_MAX / 2) {
dev_err(dev, "Invalid code_length %u\n", code_length);
return -EINVAL;
}
ucode_size = code_length * 2;
if (!ucode_size || (size < round_up(ucode_size, 16) +
sizeof(struct otx_cpt_ucode_hdr) + OTX_CPT_UCODE_SIGN_LEN)) {
dev_err(dev, "Ucode %s invalid size\n", filename);
return -EINVAL;
}
tar_info = kzalloc(sizeof(struct tar_ucode_info_t), GFP_KERNEL);
if (!tar_info)
return -ENOMEM;
tar_info->ucode_ptr = data;
set_ucode_filename(&tar_info->ucode, filename);
memcpy(tar_info->ucode.ver_str, ucode_hdr->ver_str,
OTX_CPT_UCODE_VER_STR_SZ);
tar_info->ucode.ver_num = ucode_hdr->ver_num;
tar_info->ucode.type = ucode_type;
tar_info->ucode.size = ucode_size;
list_add_tail(&tar_info->list, &tar_arch->ucodes);
return 0;
}
static void release_tar_archive(struct tar_arch_info_t *tar_arch)
{
struct tar_ucode_info_t *curr, *temp;
if (!tar_arch)
return;
list_for_each_entry_safe(curr, temp, &tar_arch->ucodes, list) {
list_del(&curr->list);
kfree(curr);
}
release_firmware(tar_arch->fw);
kfree(tar_arch);
}
static struct tar_ucode_info_t *get_uc_from_tar_archive(
struct tar_arch_info_t *tar_arch,
int ucode_type)
{
struct tar_ucode_info_t *curr, *uc_found = NULL;
list_for_each_entry(curr, &tar_arch->ucodes, list) {
if (!is_eng_type(curr->ucode.type, ucode_type))
continue;
if (!uc_found) {
uc_found = curr;
continue;
}
switch (ucode_type) {
case OTX_CPT_AE_TYPES:
break;
case OTX_CPT_SE_TYPES:
if (uc_found->ucode.ver_num.nn == OTX_CPT_SE_UC_TYPE2 ||
(uc_found->ucode.ver_num.nn == OTX_CPT_SE_UC_TYPE3
&& curr->ucode.ver_num.nn == OTX_CPT_SE_UC_TYPE1))
uc_found = curr;
break;
}
}
return uc_found;
}
static void print_tar_dbg_info(struct tar_arch_info_t *tar_arch,
char *tar_filename)
{
struct tar_ucode_info_t *curr;
pr_debug("Tar archive filename %s\n", tar_filename);
pr_debug("Tar archive pointer %p, size %ld\n", tar_arch->fw->data,
tar_arch->fw->size);
list_for_each_entry(curr, &tar_arch->ucodes, list) {
pr_debug("Ucode filename %s\n", curr->ucode.filename);
pr_debug("Ucode version string %s\n", curr->ucode.ver_str);
pr_debug("Ucode version %d.%d.%d.%d\n",
curr->ucode.ver_num.nn, curr->ucode.ver_num.xx,
curr->ucode.ver_num.yy, curr->ucode.ver_num.zz);
pr_debug("Ucode type (%d) %s\n", curr->ucode.type,
get_ucode_type_str(curr->ucode.type));
pr_debug("Ucode size %d\n", curr->ucode.size);
pr_debug("Ucode ptr %p\n", curr->ucode_ptr);
}
}
static struct tar_arch_info_t *load_tar_archive(struct device *dev,
char *tar_filename)
{
struct tar_arch_info_t *tar_arch = NULL;
struct tar_blk_t *tar_blk;
unsigned int cur_size;
size_t tar_offs = 0;
size_t tar_size;
int ret;
tar_arch = kzalloc(sizeof(struct tar_arch_info_t), GFP_KERNEL);
if (!tar_arch)
return NULL;
INIT_LIST_HEAD(&tar_arch->ucodes);
/* Load tar archive */
ret = request_firmware(&tar_arch->fw, tar_filename, dev);
if (ret)
goto release_tar_arch;
if (tar_arch->fw->size < TAR_BLOCK_LEN) {
dev_err(dev, "Invalid tar archive %s\n", tar_filename);
goto release_tar_arch;
}
tar_size = tar_arch->fw->size;
tar_blk = (struct tar_blk_t *) tar_arch->fw->data;
if (strncmp(tar_blk->hdr.magic, TAR_MAGIC, TAR_MAGIC_LEN - 1)) {
dev_err(dev, "Unsupported format of tar archive %s\n",
tar_filename);
goto release_tar_arch;
}
while (1) {
/* Read current file size */
ret = kstrtouint(tar_blk->hdr.size, 8, &cur_size);
if (ret)
goto release_tar_arch;
if (tar_offs + cur_size > tar_size ||
tar_offs + 2*TAR_BLOCK_LEN > tar_size) {
dev_err(dev, "Invalid tar archive %s\n", tar_filename);
goto release_tar_arch;
}
tar_offs += TAR_BLOCK_LEN;
if (tar_blk->hdr.typeflag == REGTYPE ||
tar_blk->hdr.typeflag == AREGTYPE) {
ret = process_tar_file(dev, tar_arch,
tar_blk->hdr.name,
&tar_arch->fw->data[tar_offs],
cur_size);
if (ret)
goto release_tar_arch;
}
tar_offs += (cur_size/TAR_BLOCK_LEN) * TAR_BLOCK_LEN;
if (cur_size % TAR_BLOCK_LEN)
tar_offs += TAR_BLOCK_LEN;
/* Check for the end of the archive */
if (tar_offs + 2*TAR_BLOCK_LEN > tar_size) {
dev_err(dev, "Invalid tar archive %s\n", tar_filename);
goto release_tar_arch;
}
if (is_mem_zero(&tar_arch->fw->data[tar_offs],
2*TAR_BLOCK_LEN))
break;
/* Read next block from tar archive */
tar_blk = (struct tar_blk_t *) &tar_arch->fw->data[tar_offs];
}
print_tar_dbg_info(tar_arch, tar_filename);
return tar_arch;
release_tar_arch:
release_tar_archive(tar_arch);
return NULL;
}
static struct otx_cpt_engs_rsvd *find_engines_by_type(
struct otx_cpt_eng_grp_info *eng_grp,
int eng_type)
{
int i;
for (i = 0; i < OTX_CPT_MAX_ETYPES_PER_GRP; i++) {
if (!eng_grp->engs[i].type)
continue;
if (eng_grp->engs[i].type == eng_type)
return &eng_grp->engs[i];
}
return NULL;
}
int otx_cpt_uc_supports_eng_type(struct otx_cpt_ucode *ucode, int eng_type)
{
return is_eng_type(ucode->type, eng_type);
}
EXPORT_SYMBOL_GPL(otx_cpt_uc_supports_eng_type);
int otx_cpt_eng_grp_has_eng_type(struct otx_cpt_eng_grp_info *eng_grp,
int eng_type)
{
struct otx_cpt_engs_rsvd *engs;
engs = find_engines_by_type(eng_grp, eng_type);
return (engs != NULL ? 1 : 0);
}
EXPORT_SYMBOL_GPL(otx_cpt_eng_grp_has_eng_type);
static void print_ucode_info(struct otx_cpt_eng_grp_info *eng_grp,
char *buf, int size)
{
if (eng_grp->mirror.is_ena) {
scnprintf(buf, size, "%s (shared with engine_group%d)",
eng_grp->g->grp[eng_grp->mirror.idx].ucode[0].ver_str,
eng_grp->mirror.idx);
} else {
scnprintf(buf, size, "%s", eng_grp->ucode[0].ver_str);
}
}
static void print_engs_info(struct otx_cpt_eng_grp_info *eng_grp,
char *buf, int size, int idx)
{
struct otx_cpt_engs_rsvd *mirrored_engs = NULL;
struct otx_cpt_engs_rsvd *engs;
int len, i;
buf[0] = '\0';
for (i = 0; i < OTX_CPT_MAX_ETYPES_PER_GRP; i++) {
engs = &eng_grp->engs[i];
if (!engs->type)
continue;
if (idx != -1 && idx != i)
continue;
if (eng_grp->mirror.is_ena)
mirrored_engs = find_engines_by_type(
&eng_grp->g->grp[eng_grp->mirror.idx],
engs->type);
if (i > 0 && idx == -1) {
len = strlen(buf);
scnprintf(buf+len, size-len, ", ");
}
len = strlen(buf);
scnprintf(buf+len, size-len, "%d %s ", mirrored_engs ?
engs->count + mirrored_engs->count : engs->count,
get_eng_type_str(engs->type));
if (mirrored_engs) {
len = strlen(buf);
scnprintf(buf+len, size-len,
"(%d shared with engine_group%d) ",
engs->count <= 0 ? engs->count +
mirrored_engs->count : mirrored_engs->count,
eng_grp->mirror.idx);
}
}
}
static void print_ucode_dbg_info(struct otx_cpt_ucode *ucode)
{
pr_debug("Ucode info\n");
pr_debug("Ucode version string %s\n", ucode->ver_str);
pr_debug("Ucode version %d.%d.%d.%d\n", ucode->ver_num.nn,
ucode->ver_num.xx, ucode->ver_num.yy, ucode->ver_num.zz);
pr_debug("Ucode type %s\n", get_ucode_type_str(ucode->type));
pr_debug("Ucode size %d\n", ucode->size);
pr_debug("Ucode virt address %16.16llx\n", (u64)ucode->align_va);
pr_debug("Ucode phys address %16.16llx\n", ucode->align_dma);
}
static void cpt_print_engines_mask(struct otx_cpt_eng_grp_info *eng_grp,
struct device *dev, char *buf, int size)
{
struct otx_cpt_bitmap bmap;
u32 mask[2];
bmap = get_cores_bmap(dev, eng_grp);
if (!bmap.size) {
scnprintf(buf, size, "unknown");
return;
}
bitmap_to_arr32(mask, bmap.bits, bmap.size);
scnprintf(buf, size, "%8.8x %8.8x", mask[1], mask[0]);
}
static void print_dbg_info(struct device *dev,
struct otx_cpt_eng_grps *eng_grps)
{
char engs_info[2*OTX_CPT_UCODE_NAME_LENGTH];
struct otx_cpt_eng_grp_info *mirrored_grp;
char engs_mask[OTX_CPT_UCODE_NAME_LENGTH];
struct otx_cpt_eng_grp_info *grp;
struct otx_cpt_engs_rsvd *engs;
u32 mask[4];
int i, j;
pr_debug("Engine groups global info\n");
pr_debug("max SE %d, max AE %d\n",
eng_grps->avail.max_se_cnt, eng_grps->avail.max_ae_cnt);
pr_debug("free SE %d\n", eng_grps->avail.se_cnt);
pr_debug("free AE %d\n", eng_grps->avail.ae_cnt);
for (i = 0; i < OTX_CPT_MAX_ENGINE_GROUPS; i++) {
grp = &eng_grps->grp[i];
pr_debug("engine_group%d, state %s\n", i, grp->is_enabled ?
"enabled" : "disabled");
if (grp->is_enabled) {
mirrored_grp = &eng_grps->grp[grp->mirror.idx];
pr_debug("Ucode0 filename %s, version %s\n",
grp->mirror.is_ena ?
mirrored_grp->ucode[0].filename :
grp->ucode[0].filename,
grp->mirror.is_ena ?
mirrored_grp->ucode[0].ver_str :
grp->ucode[0].ver_str);
}
for (j = 0; j < OTX_CPT_MAX_ETYPES_PER_GRP; j++) {
engs = &grp->engs[j];
if (engs->type) {
print_engs_info(grp, engs_info,
2*OTX_CPT_UCODE_NAME_LENGTH, j);
pr_debug("Slot%d: %s\n", j, engs_info);
bitmap_to_arr32(mask, engs->bmap,
eng_grps->engs_num);
pr_debug("Mask: %8.8x %8.8x %8.8x %8.8x\n",
mask[3], mask[2], mask[1], mask[0]);
} else
pr_debug("Slot%d not used\n", j);
}
if (grp->is_enabled) {
cpt_print_engines_mask(grp, dev, engs_mask,
OTX_CPT_UCODE_NAME_LENGTH);
pr_debug("Cmask: %s\n", engs_mask);
}
}
}
static int update_engines_avail_count(struct device *dev,
struct otx_cpt_engs_available *avail,
struct otx_cpt_engs_rsvd *engs, int val)
{
switch (engs->type) {
case OTX_CPT_SE_TYPES:
avail->se_cnt += val;
break;
case OTX_CPT_AE_TYPES:
avail->ae_cnt += val;
break;
default:
dev_err(dev, "Invalid engine type %d\n", engs->type);
return -EINVAL;
}
return 0;
}
static int update_engines_offset(struct device *dev,
struct otx_cpt_engs_available *avail,
struct otx_cpt_engs_rsvd *engs)
{
switch (engs->type) {
case OTX_CPT_SE_TYPES:
engs->offset = 0;
break;
case OTX_CPT_AE_TYPES:
engs->offset = avail->max_se_cnt;
break;
default:
dev_err(dev, "Invalid engine type %d\n", engs->type);
return -EINVAL;
}
return 0;
}
static int release_engines(struct device *dev, struct otx_cpt_eng_grp_info *grp)
{
int i, ret = 0;
for (i = 0; i < OTX_CPT_MAX_ETYPES_PER_GRP; i++) {
if (!grp->engs[i].type)
continue;
if (grp->engs[i].count > 0) {
ret = update_engines_avail_count(dev, &grp->g->avail,
&grp->engs[i],
grp->engs[i].count);
if (ret)
return ret;
}
grp->engs[i].type = 0;
grp->engs[i].count = 0;
grp->engs[i].offset = 0;
grp->engs[i].ucode = NULL;
bitmap_zero(grp->engs[i].bmap, grp->g->engs_num);
}
return 0;
}
static int do_reserve_engines(struct device *dev,
struct otx_cpt_eng_grp_info *grp,
struct otx_cpt_engines *req_engs)
{
struct otx_cpt_engs_rsvd *engs = NULL;
int i, ret;
for (i = 0; i < OTX_CPT_MAX_ETYPES_PER_GRP; i++) {
if (!grp->engs[i].type) {
engs = &grp->engs[i];
break;
}
}
if (!engs)
return -ENOMEM;
engs->type = req_engs->type;
engs->count = req_engs->count;
ret = update_engines_offset(dev, &grp->g->avail, engs);
if (ret)
return ret;
if (engs->count > 0) {
ret = update_engines_avail_count(dev, &grp->g->avail, engs,
-engs->count);
if (ret)
return ret;
}
return 0;
}
static int check_engines_availability(struct device *dev,
struct otx_cpt_eng_grp_info *grp,
struct otx_cpt_engines *req_eng)
{
int avail_cnt = 0;
switch (req_eng->type) {
case OTX_CPT_SE_TYPES:
avail_cnt = grp->g->avail.se_cnt;
break;
case OTX_CPT_AE_TYPES:
avail_cnt = grp->g->avail.ae_cnt;
break;
default:
dev_err(dev, "Invalid engine type %d\n", req_eng->type);
return -EINVAL;
}
if (avail_cnt < req_eng->count) {
dev_err(dev,
"Error available %s engines %d < than requested %d\n",
get_eng_type_str(req_eng->type),
avail_cnt, req_eng->count);
return -EBUSY;
}
return 0;
}
static int reserve_engines(struct device *dev, struct otx_cpt_eng_grp_info *grp,
struct otx_cpt_engines *req_engs, int req_cnt)
{
int i, ret;
/* Validate if a number of requested engines is available */
for (i = 0; i < req_cnt; i++) {
ret = check_engines_availability(dev, grp, &req_engs[i]);
if (ret)
return ret;
}
/* Reserve requested engines for this engine group */
for (i = 0; i < req_cnt; i++) {
ret = do_reserve_engines(dev, grp, &req_engs[i]);
if (ret)
return ret;
}
return 0;
}
static ssize_t eng_grp_info_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
char ucode_info[2*OTX_CPT_UCODE_NAME_LENGTH];
char engs_info[2*OTX_CPT_UCODE_NAME_LENGTH];
char engs_mask[OTX_CPT_UCODE_NAME_LENGTH];
struct otx_cpt_eng_grp_info *eng_grp;
int ret;
eng_grp = container_of(attr, struct otx_cpt_eng_grp_info, info_attr);
mutex_lock(&eng_grp->g->lock);
print_engs_info(eng_grp, engs_info, 2*OTX_CPT_UCODE_NAME_LENGTH, -1);
print_ucode_info(eng_grp, ucode_info, 2*OTX_CPT_UCODE_NAME_LENGTH);
cpt_print_engines_mask(eng_grp, dev, engs_mask,
OTX_CPT_UCODE_NAME_LENGTH);
ret = scnprintf(buf, PAGE_SIZE,
"Microcode : %s\nEngines: %s\nEngines mask: %s\n",
ucode_info, engs_info, engs_mask);
mutex_unlock(&eng_grp->g->lock);
return ret;
}
static int create_sysfs_eng_grps_info(struct device *dev,
struct otx_cpt_eng_grp_info *eng_grp)
{
eng_grp->info_attr.show = eng_grp_info_show;
eng_grp->info_attr.store = NULL;
eng_grp->info_attr.attr.name = eng_grp->sysfs_info_name;
eng_grp->info_attr.attr.mode = 0440;
sysfs_attr_init(&eng_grp->info_attr.attr);
return device_create_file(dev, &eng_grp->info_attr);
}
static void ucode_unload(struct device *dev, struct otx_cpt_ucode *ucode)
{
if (ucode->va) {
dma_free_coherent(dev, ucode->size + OTX_CPT_UCODE_ALIGNMENT,
ucode->va, ucode->dma);
ucode->va = NULL;
ucode->align_va = NULL;
ucode->dma = 0;
ucode->align_dma = 0;
ucode->size = 0;
}
memset(&ucode->ver_str, 0, OTX_CPT_UCODE_VER_STR_SZ);
memset(&ucode->ver_num, 0, sizeof(struct otx_cpt_ucode_ver_num));
set_ucode_filename(ucode, "");
ucode->type = 0;
}
static int copy_ucode_to_dma_mem(struct device *dev,
struct otx_cpt_ucode *ucode,
const u8 *ucode_data)
{
u32 i;
/* Allocate DMAable space */
ucode->va = dma_alloc_coherent(dev, ucode->size +
OTX_CPT_UCODE_ALIGNMENT,
&ucode->dma, GFP_KERNEL);
if (!ucode->va) {
dev_err(dev, "Unable to allocate space for microcode\n");
return -ENOMEM;
}
ucode->align_va = PTR_ALIGN(ucode->va, OTX_CPT_UCODE_ALIGNMENT);
ucode->align_dma = PTR_ALIGN(ucode->dma, OTX_CPT_UCODE_ALIGNMENT);
memcpy((void *) ucode->align_va, (void *) ucode_data +
sizeof(struct otx_cpt_ucode_hdr), ucode->size);
/* Byte swap 64-bit */
for (i = 0; i < (ucode->size / 8); i++)
((__be64 *)ucode->align_va)[i] =
cpu_to_be64(((u64 *)ucode->align_va)[i]);
/* Ucode needs 16-bit swap */
for (i = 0; i < (ucode->size / 2); i++)
((__be16 *)ucode->align_va)[i] =
cpu_to_be16(((u16 *)ucode->align_va)[i]);
return 0;
}
static int ucode_load(struct device *dev, struct otx_cpt_ucode *ucode,
const char *ucode_filename)
{
struct otx_cpt_ucode_hdr *ucode_hdr;
const struct firmware *fw;
unsigned int code_length;
int ret;
set_ucode_filename(ucode, ucode_filename);
ret = request_firmware(&fw, ucode->filename, dev);
if (ret)
return ret;
ucode_hdr = (struct otx_cpt_ucode_hdr *) fw->data;
memcpy(ucode->ver_str, ucode_hdr->ver_str, OTX_CPT_UCODE_VER_STR_SZ);
ucode->ver_num = ucode_hdr->ver_num;
code_length = ntohl(ucode_hdr->code_length);
if (code_length >= INT_MAX / 2) {
dev_err(dev, "Ucode invalid code_length %u\n", code_length);
ret = -EINVAL;
goto release_fw;
}
ucode->size = code_length * 2;
if (!ucode->size || (fw->size < round_up(ucode->size, 16)
+ sizeof(struct otx_cpt_ucode_hdr) + OTX_CPT_UCODE_SIGN_LEN)) {
dev_err(dev, "Ucode %s invalid size\n", ucode_filename);
ret = -EINVAL;
goto release_fw;
}
ret = get_ucode_type(ucode_hdr, &ucode->type);
if (ret) {
dev_err(dev, "Microcode %s unknown type 0x%x\n",
ucode->filename, ucode->type);
goto release_fw;
}
ret = copy_ucode_to_dma_mem(dev, ucode, fw->data);
if (ret)
goto release_fw;
print_ucode_dbg_info(ucode);
release_fw:
release_firmware(fw);
return ret;
}
static int enable_eng_grp(struct otx_cpt_eng_grp_info *eng_grp,
void *obj)
{
int ret;
ret = cpt_set_ucode_base(eng_grp, obj);
if (ret)
return ret;
ret = cpt_attach_and_enable_cores(eng_grp, obj);
return ret;
}
static int disable_eng_grp(struct device *dev,
struct otx_cpt_eng_grp_info *eng_grp,
void *obj)
{
int i, ret;
ret = cpt_detach_and_disable_cores(eng_grp, obj);
if (ret)
return ret;
/* Unload ucode used by this engine group */
ucode_unload(dev, &eng_grp->ucode[0]);
for (i = 0; i < OTX_CPT_MAX_ETYPES_PER_GRP; i++) {
if (!eng_grp->engs[i].type)
continue;
eng_grp->engs[i].ucode = &eng_grp->ucode[0];
}
ret = cpt_set_ucode_base(eng_grp, obj);
return ret;
}
static void setup_eng_grp_mirroring(struct otx_cpt_eng_grp_info *dst_grp,
struct otx_cpt_eng_grp_info *src_grp)
{
/* Setup fields for engine group which is mirrored */
src_grp->mirror.is_ena = false;
src_grp->mirror.idx = 0;
src_grp->mirror.ref_count++;
/* Setup fields for mirroring engine group */
dst_grp->mirror.is_ena = true;
dst_grp->mirror.idx = src_grp->idx;
dst_grp->mirror.ref_count = 0;
}
static void remove_eng_grp_mirroring(struct otx_cpt_eng_grp_info *dst_grp)
{
struct otx_cpt_eng_grp_info *src_grp;
if (!dst_grp->mirror.is_ena)
return;
src_grp = &dst_grp->g->grp[dst_grp->mirror.idx];
src_grp->mirror.ref_count--;
dst_grp->mirror.is_ena = false;
dst_grp->mirror.idx = 0;
dst_grp->mirror.ref_count = 0;
}
static void update_requested_engs(struct otx_cpt_eng_grp_info *mirrored_eng_grp,
struct otx_cpt_engines *engs, int engs_cnt)
{
struct otx_cpt_engs_rsvd *mirrored_engs;
int i;
for (i = 0; i < engs_cnt; i++) {
mirrored_engs = find_engines_by_type(mirrored_eng_grp,
engs[i].type);
if (!mirrored_engs)
continue;
/*
* If mirrored group has this type of engines attached then
* there are 3 scenarios possible:
* 1) mirrored_engs.count == engs[i].count then all engines
* from mirrored engine group will be shared with this engine
* group
* 2) mirrored_engs.count > engs[i].count then only a subset of
* engines from mirrored engine group will be shared with this
* engine group
* 3) mirrored_engs.count < engs[i].count then all engines
* from mirrored engine group will be shared with this group
* and additional engines will be reserved for exclusively use
* by this engine group
*/
engs[i].count -= mirrored_engs->count;
}
}
static struct otx_cpt_eng_grp_info *find_mirrored_eng_grp(
struct otx_cpt_eng_grp_info *grp)
{
struct otx_cpt_eng_grps *eng_grps = grp->g;
int i;
for (i = 0; i < OTX_CPT_MAX_ENGINE_GROUPS; i++) {
if (!eng_grps->grp[i].is_enabled)
continue;
if (eng_grps->grp[i].ucode[0].type)
continue;
if (grp->idx == i)
continue;
if (!strncasecmp(eng_grps->grp[i].ucode[0].ver_str,
grp->ucode[0].ver_str,
OTX_CPT_UCODE_VER_STR_SZ))
return &eng_grps->grp[i];
}
return NULL;
}
static struct otx_cpt_eng_grp_info *find_unused_eng_grp(
struct otx_cpt_eng_grps *eng_grps)
{
int i;
for (i = 0; i < OTX_CPT_MAX_ENGINE_GROUPS; i++) {
if (!eng_grps->grp[i].is_enabled)
return &eng_grps->grp[i];
}
return NULL;
}
static int eng_grp_update_masks(struct device *dev,
struct otx_cpt_eng_grp_info *eng_grp)
{
struct otx_cpt_engs_rsvd *engs, *mirrored_engs;
struct otx_cpt_bitmap tmp_bmap = { {0} };
int i, j, cnt, max_cnt;
int bit;
for (i = 0; i < OTX_CPT_MAX_ETYPES_PER_GRP; i++) {
engs = &eng_grp->engs[i];
if (!engs->type)
continue;
if (engs->count <= 0)
continue;
switch (engs->type) {
case OTX_CPT_SE_TYPES:
max_cnt = eng_grp->g->avail.max_se_cnt;
break;
case OTX_CPT_AE_TYPES:
max_cnt = eng_grp->g->avail.max_ae_cnt;
break;
default:
dev_err(dev, "Invalid engine type %d\n", engs->type);
return -EINVAL;
}
cnt = engs->count;
WARN_ON(engs->offset + max_cnt > OTX_CPT_MAX_ENGINES);
bitmap_zero(tmp_bmap.bits, eng_grp->g->engs_num);
for (j = engs->offset; j < engs->offset + max_cnt; j++) {
if (!eng_grp->g->eng_ref_cnt[j]) {
bitmap_set(tmp_bmap.bits, j, 1);
cnt--;
if (!cnt)
break;
}
}
if (cnt)
return -ENOSPC;
bitmap_copy(engs->bmap, tmp_bmap.bits, eng_grp->g->engs_num);
}
if (!eng_grp->mirror.is_ena)
return 0;
for (i = 0; i < OTX_CPT_MAX_ETYPES_PER_GRP; i++) {
engs = &eng_grp->engs[i];
if (!engs->type)
continue;
mirrored_engs = find_engines_by_type(
&eng_grp->g->grp[eng_grp->mirror.idx],
engs->type);
WARN_ON(!mirrored_engs && engs->count <= 0);
if (!mirrored_engs)
continue;
bitmap_copy(tmp_bmap.bits, mirrored_engs->bmap,
eng_grp->g->engs_num);
if (engs->count < 0) {
bit = find_first_bit(mirrored_engs->bmap,
eng_grp->g->engs_num);
bitmap_clear(tmp_bmap.bits, bit, -engs->count);
}
bitmap_or(engs->bmap, engs->bmap, tmp_bmap.bits,
eng_grp->g->engs_num);
}
return 0;
}
static int delete_engine_group(struct device *dev,
struct otx_cpt_eng_grp_info *eng_grp)
{
int i, ret;
if (!eng_grp->is_enabled)
return -EINVAL;
if (eng_grp->mirror.ref_count) {
dev_err(dev, "Can't delete engine_group%d as it is used by engine_group(s):",
eng_grp->idx);
for (i = 0; i < OTX_CPT_MAX_ENGINE_GROUPS; i++) {
if (eng_grp->g->grp[i].mirror.is_ena &&
eng_grp->g->grp[i].mirror.idx == eng_grp->idx)
pr_cont(" %d", i);
}
pr_cont("\n");
return -EINVAL;
}
/* Removing engine group mirroring if enabled */
remove_eng_grp_mirroring(eng_grp);
/* Disable engine group */
ret = disable_eng_grp(dev, eng_grp, eng_grp->g->obj);
if (ret)
return ret;
/* Release all engines held by this engine group */
ret = release_engines(dev, eng_grp);
if (ret)
return ret;
device_remove_file(dev, &eng_grp->info_attr);
eng_grp->is_enabled = false;
return 0;
}
static int validate_1_ucode_scenario(struct device *dev,
struct otx_cpt_eng_grp_info *eng_grp,
struct otx_cpt_engines *engs, int engs_cnt)
{
int i;
/* Verify that ucode loaded supports requested engine types */
for (i = 0; i < engs_cnt; i++) {
if (!otx_cpt_uc_supports_eng_type(&eng_grp->ucode[0],
engs[i].type)) {
dev_err(dev,
"Microcode %s does not support %s engines\n",
eng_grp->ucode[0].filename,
get_eng_type_str(engs[i].type));
return -EINVAL;
}
}
return 0;
}
static void update_ucode_ptrs(struct otx_cpt_eng_grp_info *eng_grp)
{
struct otx_cpt_ucode *ucode;
if (eng_grp->mirror.is_ena)
ucode = &eng_grp->g->grp[eng_grp->mirror.idx].ucode[0];
else
ucode = &eng_grp->ucode[0];
WARN_ON(!eng_grp->engs[0].type);
eng_grp->engs[0].ucode = ucode;
}
static int create_engine_group(struct device *dev,
struct otx_cpt_eng_grps *eng_grps,
struct otx_cpt_engines *engs, int engs_cnt,
void *ucode_data[], int ucodes_cnt,
bool use_uc_from_tar_arch)
{
struct otx_cpt_eng_grp_info *mirrored_eng_grp;
struct tar_ucode_info_t *tar_info;
struct otx_cpt_eng_grp_info *eng_grp;
int i, ret = 0;
if (ucodes_cnt > OTX_CPT_MAX_ETYPES_PER_GRP)
return -EINVAL;
/* Validate if requested engine types are supported by this device */
for (i = 0; i < engs_cnt; i++)
if (!dev_supports_eng_type(eng_grps, engs[i].type)) {
dev_err(dev, "Device does not support %s engines\n",
get_eng_type_str(engs[i].type));
return -EPERM;
}
/* Find engine group which is not used */
eng_grp = find_unused_eng_grp(eng_grps);
if (!eng_grp) {
dev_err(dev, "Error all engine groups are being used\n");
return -ENOSPC;
}
/* Load ucode */
for (i = 0; i < ucodes_cnt; i++) {
if (use_uc_from_tar_arch) {
tar_info = (struct tar_ucode_info_t *) ucode_data[i];
eng_grp->ucode[i] = tar_info->ucode;
ret = copy_ucode_to_dma_mem(dev, &eng_grp->ucode[i],
tar_info->ucode_ptr);
} else
ret = ucode_load(dev, &eng_grp->ucode[i],
(char *) ucode_data[i]);
if (ret)
goto err_ucode_unload;
}
/* Validate scenario where 1 ucode is used */
ret = validate_1_ucode_scenario(dev, eng_grp, engs, engs_cnt);
if (ret)
goto err_ucode_unload;
/* Check if this group mirrors another existing engine group */
mirrored_eng_grp = find_mirrored_eng_grp(eng_grp);
if (mirrored_eng_grp) {
/* Setup mirroring */
setup_eng_grp_mirroring(eng_grp, mirrored_eng_grp);
/*
* Update count of requested engines because some
* of them might be shared with mirrored group
*/
update_requested_engs(mirrored_eng_grp, engs, engs_cnt);
}
/* Reserve engines */
ret = reserve_engines(dev, eng_grp, engs, engs_cnt);
if (ret)
goto err_ucode_unload;
/* Update ucode pointers used by engines */
update_ucode_ptrs(eng_grp);
/* Update engine masks used by this group */
ret = eng_grp_update_masks(dev, eng_grp);
if (ret)
goto err_release_engs;
/* Create sysfs entry for engine group info */
ret = create_sysfs_eng_grps_info(dev, eng_grp);
if (ret)
goto err_release_engs;
/* Enable engine group */
ret = enable_eng_grp(eng_grp, eng_grps->obj);
if (ret)
goto err_release_engs;
/*
* If this engine group mirrors another engine group
* then we need to unload ucode as we will use ucode
* from mirrored engine group
*/
if (eng_grp->mirror.is_ena)
ucode_unload(dev, &eng_grp->ucode[0]);
eng_grp->is_enabled = true;
if (eng_grp->mirror.is_ena)
dev_info(dev,
"Engine_group%d: reuse microcode %s from group %d\n",
eng_grp->idx, mirrored_eng_grp->ucode[0].ver_str,
mirrored_eng_grp->idx);
else
dev_info(dev, "Engine_group%d: microcode loaded %s\n",
eng_grp->idx, eng_grp->ucode[0].ver_str);
return 0;
err_release_engs:
release_engines(dev, eng_grp);
err_ucode_unload:
ucode_unload(dev, &eng_grp->ucode[0]);
return ret;
}
static ssize_t ucode_load_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct otx_cpt_engines engs[OTX_CPT_MAX_ETYPES_PER_GRP] = { {0} };
char *ucode_filename[OTX_CPT_MAX_ETYPES_PER_GRP];
char tmp_buf[OTX_CPT_UCODE_NAME_LENGTH] = { 0 };
char *start, *val, *err_msg, *tmp;
struct otx_cpt_eng_grps *eng_grps;
int grp_idx = 0, ret = -EINVAL;
bool has_se, has_ie, has_ae;
int del_grp_idx = -1;
int ucode_idx = 0;
if (strlen(buf) > OTX_CPT_UCODE_NAME_LENGTH)
return -EINVAL;
eng_grps = container_of(attr, struct otx_cpt_eng_grps, ucode_load_attr);
err_msg = "Invalid engine group format";
strscpy(tmp_buf, buf, OTX_CPT_UCODE_NAME_LENGTH);
start = tmp_buf;
has_se = has_ie = has_ae = false;
for (;;) {
val = strsep(&start, ";");
if (!val)
break;
val = strim(val);
if (!*val)
continue;
if (!strncasecmp(val, "engine_group", 12)) {
if (del_grp_idx != -1)
goto err_print;
tmp = strim(strsep(&val, ":"));
if (!val)
goto err_print;
if (strlen(tmp) != 13)
goto err_print;
if (kstrtoint((tmp + 12), 10, &del_grp_idx))
goto err_print;
val = strim(val);
if (strncasecmp(val, "null", 4))
goto err_print;
if (strlen(val) != 4)
goto err_print;
} else if (!strncasecmp(val, "se", 2) && strchr(val, ':')) {
if (has_se || ucode_idx)
goto err_print;
tmp = strim(strsep(&val, ":"));
if (!val)
goto err_print;
if (strlen(tmp) != 2)
goto err_print;
if (kstrtoint(strim(val), 10, &engs[grp_idx].count))
goto err_print;
engs[grp_idx++].type = OTX_CPT_SE_TYPES;
has_se = true;
} else if (!strncasecmp(val, "ae", 2) && strchr(val, ':')) {
if (has_ae || ucode_idx)
goto err_print;
tmp = strim(strsep(&val, ":"));
if (!val)
goto err_print;
if (strlen(tmp) != 2)
goto err_print;
if (kstrtoint(strim(val), 10, &engs[grp_idx].count))
goto err_print;
engs[grp_idx++].type = OTX_CPT_AE_TYPES;
has_ae = true;
} else {
if (ucode_idx > 1)
goto err_print;
if (!strlen(val))
goto err_print;
if (strnstr(val, " ", strlen(val)))
goto err_print;
ucode_filename[ucode_idx++] = val;
}
}
/* Validate input parameters */
if (del_grp_idx == -1) {
if (!(grp_idx && ucode_idx))
goto err_print;
if (ucode_idx > 1 && grp_idx < 2)
goto err_print;
if (grp_idx > OTX_CPT_MAX_ETYPES_PER_GRP) {
err_msg = "Error max 2 engine types can be attached";
goto err_print;
}
} else {
if (del_grp_idx < 0 ||
del_grp_idx >= OTX_CPT_MAX_ENGINE_GROUPS) {
dev_err(dev, "Invalid engine group index %d\n",
del_grp_idx);
ret = -EINVAL;
return ret;
}
if (!eng_grps->grp[del_grp_idx].is_enabled) {
dev_err(dev, "Error engine_group%d is not configured\n",
del_grp_idx);
ret = -EINVAL;
return ret;
}
if (grp_idx || ucode_idx)
goto err_print;
}
mutex_lock(&eng_grps->lock);
if (eng_grps->is_rdonly) {
dev_err(dev, "Disable VFs before modifying engine groups\n");
ret = -EACCES;
goto err_unlock;
}
if (del_grp_idx == -1)
/* create engine group */
ret = create_engine_group(dev, eng_grps, engs, grp_idx,
(void **) ucode_filename,
ucode_idx, false);
else
/* delete engine group */
ret = delete_engine_group(dev, &eng_grps->grp[del_grp_idx]);
if (ret)
goto err_unlock;
print_dbg_info(dev, eng_grps);
err_unlock:
mutex_unlock(&eng_grps->lock);
return ret ? ret : count;
err_print:
dev_err(dev, "%s\n", err_msg);
return ret;
}
int otx_cpt_try_create_default_eng_grps(struct pci_dev *pdev,
struct otx_cpt_eng_grps *eng_grps,
int pf_type)
{
struct tar_ucode_info_t *tar_info[OTX_CPT_MAX_ETYPES_PER_GRP] = {};
struct otx_cpt_engines engs[OTX_CPT_MAX_ETYPES_PER_GRP] = {};
struct tar_arch_info_t *tar_arch = NULL;
char *tar_filename;
int i, ret = 0;
mutex_lock(&eng_grps->lock);
/*
* We don't create engine group for kernel crypto if attempt to create
* it was already made (when user enabled VFs for the first time)
*/
if (eng_grps->is_first_try)
goto unlock_mutex;
eng_grps->is_first_try = true;
/* We create group for kcrypto only if no groups are configured */
for (i = 0; i < OTX_CPT_MAX_ENGINE_GROUPS; i++)
if (eng_grps->grp[i].is_enabled)
goto unlock_mutex;
switch (pf_type) {
case OTX_CPT_AE:
case OTX_CPT_SE:
tar_filename = OTX_CPT_UCODE_TAR_FILE_NAME;
break;
default:
dev_err(&pdev->dev, "Unknown PF type %d\n", pf_type);
ret = -EINVAL;
goto unlock_mutex;
}
tar_arch = load_tar_archive(&pdev->dev, tar_filename);
if (!tar_arch)
goto unlock_mutex;
/*
* If device supports SE engines and there is SE microcode in tar
* archive try to create engine group with SE engines for kernel
* crypto functionality (symmetric crypto)
*/
tar_info[0] = get_uc_from_tar_archive(tar_arch, OTX_CPT_SE_TYPES);
if (tar_info[0] &&
dev_supports_eng_type(eng_grps, OTX_CPT_SE_TYPES)) {
engs[0].type = OTX_CPT_SE_TYPES;
engs[0].count = eng_grps->avail.max_se_cnt;
ret = create_engine_group(&pdev->dev, eng_grps, engs, 1,
(void **) tar_info, 1, true);
if (ret)
goto release_tar_arch;
}
/*
* If device supports AE engines and there is AE microcode in tar
* archive try to create engine group with AE engines for asymmetric
* crypto functionality.
*/
tar_info[0] = get_uc_from_tar_archive(tar_arch, OTX_CPT_AE_TYPES);
if (tar_info[0] &&
dev_supports_eng_type(eng_grps, OTX_CPT_AE_TYPES)) {
engs[0].type = OTX_CPT_AE_TYPES;
engs[0].count = eng_grps->avail.max_ae_cnt;
ret = create_engine_group(&pdev->dev, eng_grps, engs, 1,
(void **) tar_info, 1, true);
if (ret)
goto release_tar_arch;
}
print_dbg_info(&pdev->dev, eng_grps);
release_tar_arch:
release_tar_archive(tar_arch);
unlock_mutex:
mutex_unlock(&eng_grps->lock);
return ret;
}
void otx_cpt_set_eng_grps_is_rdonly(struct otx_cpt_eng_grps *eng_grps,
bool is_rdonly)
{
mutex_lock(&eng_grps->lock);
eng_grps->is_rdonly = is_rdonly;
mutex_unlock(&eng_grps->lock);
}
void otx_cpt_disable_all_cores(struct otx_cpt_device *cpt)
{
int grp, timeout = 100;
u64 reg;
/* Disengage the cores from groups */
for (grp = 0; grp < OTX_CPT_MAX_ENGINE_GROUPS; grp++) {
writeq(0, cpt->reg_base + OTX_CPT_PF_GX_EN(grp));
udelay(CSR_DELAY);
}
reg = readq(cpt->reg_base + OTX_CPT_PF_EXEC_BUSY);
while (reg) {
udelay(CSR_DELAY);
reg = readq(cpt->reg_base + OTX_CPT_PF_EXEC_BUSY);
if (timeout--) {
dev_warn(&cpt->pdev->dev, "Cores still busy\n");
break;
}
}
/* Disable the cores */
writeq(0, cpt->reg_base + OTX_CPT_PF_EXE_CTL);
}
void otx_cpt_cleanup_eng_grps(struct pci_dev *pdev,
struct otx_cpt_eng_grps *eng_grps)
{
struct otx_cpt_eng_grp_info *grp;
int i, j;
mutex_lock(&eng_grps->lock);
if (eng_grps->is_ucode_load_created) {
device_remove_file(&pdev->dev,
&eng_grps->ucode_load_attr);
eng_grps->is_ucode_load_created = false;
}
/* First delete all mirroring engine groups */
for (i = 0; i < OTX_CPT_MAX_ENGINE_GROUPS; i++)
if (eng_grps->grp[i].mirror.is_ena)
delete_engine_group(&pdev->dev, &eng_grps->grp[i]);
/* Delete remaining engine groups */
for (i = 0; i < OTX_CPT_MAX_ENGINE_GROUPS; i++)
delete_engine_group(&pdev->dev, &eng_grps->grp[i]);
/* Release memory */
for (i = 0; i < OTX_CPT_MAX_ENGINE_GROUPS; i++) {
grp = &eng_grps->grp[i];
for (j = 0; j < OTX_CPT_MAX_ETYPES_PER_GRP; j++) {
kfree(grp->engs[j].bmap);
grp->engs[j].bmap = NULL;
}
}
mutex_unlock(&eng_grps->lock);
}
int otx_cpt_init_eng_grps(struct pci_dev *pdev,
struct otx_cpt_eng_grps *eng_grps, int pf_type)
{
struct otx_cpt_eng_grp_info *grp;
int i, j, ret = 0;
mutex_init(&eng_grps->lock);
eng_grps->obj = pci_get_drvdata(pdev);
eng_grps->avail.se_cnt = eng_grps->avail.max_se_cnt;
eng_grps->avail.ae_cnt = eng_grps->avail.max_ae_cnt;
eng_grps->engs_num = eng_grps->avail.max_se_cnt +
eng_grps->avail.max_ae_cnt;
if (eng_grps->engs_num > OTX_CPT_MAX_ENGINES) {
dev_err(&pdev->dev,
"Number of engines %d > than max supported %d\n",
eng_grps->engs_num, OTX_CPT_MAX_ENGINES);
ret = -EINVAL;
goto err;
}
for (i = 0; i < OTX_CPT_MAX_ENGINE_GROUPS; i++) {
grp = &eng_grps->grp[i];
grp->g = eng_grps;
grp->idx = i;
snprintf(grp->sysfs_info_name, OTX_CPT_UCODE_NAME_LENGTH,
"engine_group%d", i);
for (j = 0; j < OTX_CPT_MAX_ETYPES_PER_GRP; j++) {
grp->engs[j].bmap =
kcalloc(BITS_TO_LONGS(eng_grps->engs_num),
sizeof(long), GFP_KERNEL);
if (!grp->engs[j].bmap) {
ret = -ENOMEM;
goto err;
}
}
}
switch (pf_type) {
case OTX_CPT_SE:
/* OcteonTX 83XX SE CPT PF has only SE engines attached */
eng_grps->eng_types_supported = 1 << OTX_CPT_SE_TYPES;
break;
case OTX_CPT_AE:
/* OcteonTX 83XX AE CPT PF has only AE engines attached */
eng_grps->eng_types_supported = 1 << OTX_CPT_AE_TYPES;
break;
default:
dev_err(&pdev->dev, "Unknown PF type %d\n", pf_type);
ret = -EINVAL;
goto err;
}
eng_grps->ucode_load_attr.show = NULL;
eng_grps->ucode_load_attr.store = ucode_load_store;
eng_grps->ucode_load_attr.attr.name = "ucode_load";
eng_grps->ucode_load_attr.attr.mode = 0220;
sysfs_attr_init(&eng_grps->ucode_load_attr.attr);
ret = device_create_file(&pdev->dev,
&eng_grps->ucode_load_attr);
if (ret)
goto err;
eng_grps->is_ucode_load_created = true;
print_dbg_info(&pdev->dev, eng_grps);
return ret;
err:
otx_cpt_cleanup_eng_grps(pdev, eng_grps);
return ret;
}
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