blob: cdc0b8a6ed4835505be7265e26e92c5b688cc22e [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB
/* Copyright (c) 2015 - 2021 Intel Corporation */
#include "osdep.h"
#include "hmc.h"
#include "defs.h"
#include "type.h"
#include "protos.h"
#include "pble.h"
static int add_pble_prm(struct irdma_hmc_pble_rsrc *pble_rsrc);
/**
* irdma_destroy_pble_prm - destroy prm during module unload
* @pble_rsrc: pble resources
*/
void irdma_destroy_pble_prm(struct irdma_hmc_pble_rsrc *pble_rsrc)
{
struct irdma_chunk *chunk;
struct irdma_pble_prm *pinfo = &pble_rsrc->pinfo;
while (!list_empty(&pinfo->clist)) {
chunk = (struct irdma_chunk *) pinfo->clist.next;
list_del(&chunk->list);
if (chunk->type == PBLE_SD_PAGED)
irdma_pble_free_paged_mem(chunk);
bitmap_free(chunk->bitmapbuf);
kfree(chunk->chunkmem.va);
}
}
/**
* irdma_hmc_init_pble - Initialize pble resources during module load
* @dev: irdma_sc_dev struct
* @pble_rsrc: pble resources
*/
int irdma_hmc_init_pble(struct irdma_sc_dev *dev,
struct irdma_hmc_pble_rsrc *pble_rsrc)
{
struct irdma_hmc_info *hmc_info;
u32 fpm_idx = 0;
int status = 0;
hmc_info = dev->hmc_info;
pble_rsrc->dev = dev;
pble_rsrc->fpm_base_addr = hmc_info->hmc_obj[IRDMA_HMC_IW_PBLE].base;
/* Start pble' on 4k boundary */
if (pble_rsrc->fpm_base_addr & 0xfff)
fpm_idx = (4096 - (pble_rsrc->fpm_base_addr & 0xfff)) >> 3;
pble_rsrc->unallocated_pble =
hmc_info->hmc_obj[IRDMA_HMC_IW_PBLE].cnt - fpm_idx;
pble_rsrc->next_fpm_addr = pble_rsrc->fpm_base_addr + (fpm_idx << 3);
pble_rsrc->pinfo.pble_shift = PBLE_SHIFT;
mutex_init(&pble_rsrc->pble_mutex_lock);
spin_lock_init(&pble_rsrc->pinfo.prm_lock);
INIT_LIST_HEAD(&pble_rsrc->pinfo.clist);
if (add_pble_prm(pble_rsrc)) {
irdma_destroy_pble_prm(pble_rsrc);
status = -ENOMEM;
}
return status;
}
/**
* get_sd_pd_idx - Returns sd index, pd index and rel_pd_idx from fpm address
* @pble_rsrc: structure containing fpm address
* @idx: where to return indexes
*/
static void get_sd_pd_idx(struct irdma_hmc_pble_rsrc *pble_rsrc,
struct sd_pd_idx *idx)
{
idx->sd_idx = (u32)pble_rsrc->next_fpm_addr / IRDMA_HMC_DIRECT_BP_SIZE;
idx->pd_idx = (u32)(pble_rsrc->next_fpm_addr / IRDMA_HMC_PAGED_BP_SIZE);
idx->rel_pd_idx = (idx->pd_idx % IRDMA_HMC_PD_CNT_IN_SD);
}
/**
* add_sd_direct - add sd direct for pble
* @pble_rsrc: pble resource ptr
* @info: page info for sd
*/
static int add_sd_direct(struct irdma_hmc_pble_rsrc *pble_rsrc,
struct irdma_add_page_info *info)
{
struct irdma_sc_dev *dev = pble_rsrc->dev;
int ret_code = 0;
struct sd_pd_idx *idx = &info->idx;
struct irdma_chunk *chunk = info->chunk;
struct irdma_hmc_info *hmc_info = info->hmc_info;
struct irdma_hmc_sd_entry *sd_entry = info->sd_entry;
u32 offset = 0;
if (!sd_entry->valid) {
ret_code = irdma_add_sd_table_entry(dev->hw, hmc_info,
info->idx.sd_idx,
IRDMA_SD_TYPE_DIRECT,
IRDMA_HMC_DIRECT_BP_SIZE);
if (ret_code)
return ret_code;
chunk->type = PBLE_SD_CONTIGOUS;
}
offset = idx->rel_pd_idx << HMC_PAGED_BP_SHIFT;
chunk->size = info->pages << HMC_PAGED_BP_SHIFT;
chunk->vaddr = sd_entry->u.bp.addr.va + offset;
chunk->fpm_addr = pble_rsrc->next_fpm_addr;
ibdev_dbg(to_ibdev(dev),
"PBLE: chunk_size[%lld] = 0x%llx vaddr=0x%pK fpm_addr = %llx\n",
chunk->size, chunk->size, chunk->vaddr, chunk->fpm_addr);
return 0;
}
/**
* fpm_to_idx - given fpm address, get pble index
* @pble_rsrc: pble resource management
* @addr: fpm address for index
*/
static u32 fpm_to_idx(struct irdma_hmc_pble_rsrc *pble_rsrc, u64 addr)
{
u64 idx;
idx = (addr - (pble_rsrc->fpm_base_addr)) >> 3;
return (u32)idx;
}
/**
* add_bp_pages - add backing pages for sd
* @pble_rsrc: pble resource management
* @info: page info for sd
*/
static int add_bp_pages(struct irdma_hmc_pble_rsrc *pble_rsrc,
struct irdma_add_page_info *info)
{
struct irdma_sc_dev *dev = pble_rsrc->dev;
u8 *addr;
struct irdma_dma_mem mem;
struct irdma_hmc_pd_entry *pd_entry;
struct irdma_hmc_sd_entry *sd_entry = info->sd_entry;
struct irdma_hmc_info *hmc_info = info->hmc_info;
struct irdma_chunk *chunk = info->chunk;
int status = 0;
u32 rel_pd_idx = info->idx.rel_pd_idx;
u32 pd_idx = info->idx.pd_idx;
u32 i;
if (irdma_pble_get_paged_mem(chunk, info->pages))
return -ENOMEM;
status = irdma_add_sd_table_entry(dev->hw, hmc_info, info->idx.sd_idx,
IRDMA_SD_TYPE_PAGED,
IRDMA_HMC_DIRECT_BP_SIZE);
if (status)
goto error;
addr = chunk->vaddr;
for (i = 0; i < info->pages; i++) {
mem.pa = (u64)chunk->dmainfo.dmaaddrs[i];
mem.size = 4096;
mem.va = addr;
pd_entry = &sd_entry->u.pd_table.pd_entry[rel_pd_idx++];
if (!pd_entry->valid) {
status = irdma_add_pd_table_entry(dev, hmc_info,
pd_idx++, &mem);
if (status)
goto error;
addr += 4096;
}
}
chunk->fpm_addr = pble_rsrc->next_fpm_addr;
return 0;
error:
irdma_pble_free_paged_mem(chunk);
return status;
}
/**
* irdma_get_type - add a sd entry type for sd
* @dev: irdma_sc_dev struct
* @idx: index of sd
* @pages: pages in the sd
*/
static enum irdma_sd_entry_type irdma_get_type(struct irdma_sc_dev *dev,
struct sd_pd_idx *idx, u32 pages)
{
enum irdma_sd_entry_type sd_entry_type;
sd_entry_type = !idx->rel_pd_idx && pages == IRDMA_HMC_PD_CNT_IN_SD ?
IRDMA_SD_TYPE_DIRECT : IRDMA_SD_TYPE_PAGED;
return sd_entry_type;
}
/**
* add_pble_prm - add a sd entry for pble resoure
* @pble_rsrc: pble resource management
*/
static int add_pble_prm(struct irdma_hmc_pble_rsrc *pble_rsrc)
{
struct irdma_sc_dev *dev = pble_rsrc->dev;
struct irdma_hmc_sd_entry *sd_entry;
struct irdma_hmc_info *hmc_info;
struct irdma_chunk *chunk;
struct irdma_add_page_info info;
struct sd_pd_idx *idx = &info.idx;
int ret_code = 0;
enum irdma_sd_entry_type sd_entry_type;
u64 sd_reg_val = 0;
struct irdma_virt_mem chunkmem;
u32 pages;
if (pble_rsrc->unallocated_pble < PBLE_PER_PAGE)
return -ENOMEM;
if (pble_rsrc->next_fpm_addr & 0xfff)
return -EINVAL;
chunkmem.size = sizeof(*chunk);
chunkmem.va = kzalloc(chunkmem.size, GFP_KERNEL);
if (!chunkmem.va)
return -ENOMEM;
chunk = chunkmem.va;
chunk->chunkmem = chunkmem;
hmc_info = dev->hmc_info;
chunk->dev = dev;
chunk->fpm_addr = pble_rsrc->next_fpm_addr;
get_sd_pd_idx(pble_rsrc, idx);
sd_entry = &hmc_info->sd_table.sd_entry[idx->sd_idx];
pages = (idx->rel_pd_idx) ? (IRDMA_HMC_PD_CNT_IN_SD - idx->rel_pd_idx) :
IRDMA_HMC_PD_CNT_IN_SD;
pages = min(pages, pble_rsrc->unallocated_pble >> PBLE_512_SHIFT);
info.chunk = chunk;
info.hmc_info = hmc_info;
info.pages = pages;
info.sd_entry = sd_entry;
if (!sd_entry->valid)
sd_entry_type = irdma_get_type(dev, idx, pages);
else
sd_entry_type = sd_entry->entry_type;
ibdev_dbg(to_ibdev(dev),
"PBLE: pages = %d, unallocated_pble[%d] current_fpm_addr = %llx\n",
pages, pble_rsrc->unallocated_pble,
pble_rsrc->next_fpm_addr);
ibdev_dbg(to_ibdev(dev), "PBLE: sd_entry_type = %d\n", sd_entry_type);
if (sd_entry_type == IRDMA_SD_TYPE_DIRECT)
ret_code = add_sd_direct(pble_rsrc, &info);
if (ret_code)
sd_entry_type = IRDMA_SD_TYPE_PAGED;
else
pble_rsrc->stats_direct_sds++;
if (sd_entry_type == IRDMA_SD_TYPE_PAGED) {
ret_code = add_bp_pages(pble_rsrc, &info);
if (ret_code)
goto error;
else
pble_rsrc->stats_paged_sds++;
}
ret_code = irdma_prm_add_pble_mem(&pble_rsrc->pinfo, chunk);
if (ret_code)
goto error;
pble_rsrc->next_fpm_addr += chunk->size;
ibdev_dbg(to_ibdev(dev),
"PBLE: next_fpm_addr = %llx chunk_size[%llu] = 0x%llx\n",
pble_rsrc->next_fpm_addr, chunk->size, chunk->size);
pble_rsrc->unallocated_pble -= (u32)(chunk->size >> 3);
sd_reg_val = (sd_entry_type == IRDMA_SD_TYPE_PAGED) ?
sd_entry->u.pd_table.pd_page_addr.pa :
sd_entry->u.bp.addr.pa;
if (!sd_entry->valid) {
ret_code = irdma_hmc_sd_one(dev, hmc_info->hmc_fn_id, sd_reg_val,
idx->sd_idx, sd_entry->entry_type, true);
if (ret_code)
goto error;
}
list_add(&chunk->list, &pble_rsrc->pinfo.clist);
sd_entry->valid = true;
return 0;
error:
bitmap_free(chunk->bitmapbuf);
kfree(chunk->chunkmem.va);
return ret_code;
}
/**
* free_lvl2 - fee level 2 pble
* @pble_rsrc: pble resource management
* @palloc: level 2 pble allocation
*/
static void free_lvl2(struct irdma_hmc_pble_rsrc *pble_rsrc,
struct irdma_pble_alloc *palloc)
{
u32 i;
struct irdma_pble_level2 *lvl2 = &palloc->level2;
struct irdma_pble_info *root = &lvl2->root;
struct irdma_pble_info *leaf = lvl2->leaf;
for (i = 0; i < lvl2->leaf_cnt; i++, leaf++) {
if (leaf->addr)
irdma_prm_return_pbles(&pble_rsrc->pinfo,
&leaf->chunkinfo);
else
break;
}
if (root->addr)
irdma_prm_return_pbles(&pble_rsrc->pinfo, &root->chunkinfo);
kfree(lvl2->leafmem.va);
lvl2->leaf = NULL;
}
/**
* get_lvl2_pble - get level 2 pble resource
* @pble_rsrc: pble resource management
* @palloc: level 2 pble allocation
*/
static int get_lvl2_pble(struct irdma_hmc_pble_rsrc *pble_rsrc,
struct irdma_pble_alloc *palloc)
{
u32 lf4k, lflast, total, i;
u32 pblcnt = PBLE_PER_PAGE;
u64 *addr;
struct irdma_pble_level2 *lvl2 = &palloc->level2;
struct irdma_pble_info *root = &lvl2->root;
struct irdma_pble_info *leaf;
int ret_code;
u64 fpm_addr;
/* number of full 512 (4K) leafs) */
lf4k = palloc->total_cnt >> 9;
lflast = palloc->total_cnt % PBLE_PER_PAGE;
total = (lflast == 0) ? lf4k : lf4k + 1;
lvl2->leaf_cnt = total;
lvl2->leafmem.size = (sizeof(*leaf) * total);
lvl2->leafmem.va = kzalloc(lvl2->leafmem.size, GFP_KERNEL);
if (!lvl2->leafmem.va)
return -ENOMEM;
lvl2->leaf = lvl2->leafmem.va;
leaf = lvl2->leaf;
ret_code = irdma_prm_get_pbles(&pble_rsrc->pinfo, &root->chunkinfo,
total << 3, &root->addr, &fpm_addr);
if (ret_code) {
kfree(lvl2->leafmem.va);
lvl2->leaf = NULL;
return -ENOMEM;
}
root->idx = fpm_to_idx(pble_rsrc, fpm_addr);
root->cnt = total;
addr = root->addr;
for (i = 0; i < total; i++, leaf++) {
pblcnt = (lflast && ((i + 1) == total)) ?
lflast : PBLE_PER_PAGE;
ret_code = irdma_prm_get_pbles(&pble_rsrc->pinfo,
&leaf->chunkinfo, pblcnt << 3,
&leaf->addr, &fpm_addr);
if (ret_code)
goto error;
leaf->idx = fpm_to_idx(pble_rsrc, fpm_addr);
leaf->cnt = pblcnt;
*addr = (u64)leaf->idx;
addr++;
}
palloc->level = PBLE_LEVEL_2;
pble_rsrc->stats_lvl2++;
return 0;
error:
free_lvl2(pble_rsrc, palloc);
return -ENOMEM;
}
/**
* get_lvl1_pble - get level 1 pble resource
* @pble_rsrc: pble resource management
* @palloc: level 1 pble allocation
*/
static int get_lvl1_pble(struct irdma_hmc_pble_rsrc *pble_rsrc,
struct irdma_pble_alloc *palloc)
{
int ret_code;
u64 fpm_addr;
struct irdma_pble_info *lvl1 = &palloc->level1;
ret_code = irdma_prm_get_pbles(&pble_rsrc->pinfo, &lvl1->chunkinfo,
palloc->total_cnt << 3, &lvl1->addr,
&fpm_addr);
if (ret_code)
return -ENOMEM;
palloc->level = PBLE_LEVEL_1;
lvl1->idx = fpm_to_idx(pble_rsrc, fpm_addr);
lvl1->cnt = palloc->total_cnt;
pble_rsrc->stats_lvl1++;
return 0;
}
/**
* get_lvl1_lvl2_pble - calls get_lvl1 and get_lvl2 pble routine
* @pble_rsrc: pble resources
* @palloc: contains all inforamtion regarding pble (idx + pble addr)
* @level1_only: flag for a level 1 PBLE
*/
static int get_lvl1_lvl2_pble(struct irdma_hmc_pble_rsrc *pble_rsrc,
struct irdma_pble_alloc *palloc, bool level1_only)
{
int status = 0;
status = get_lvl1_pble(pble_rsrc, palloc);
if (!status || level1_only || palloc->total_cnt <= PBLE_PER_PAGE)
return status;
status = get_lvl2_pble(pble_rsrc, palloc);
return status;
}
/**
* irdma_get_pble - allocate pbles from the prm
* @pble_rsrc: pble resources
* @palloc: contains all inforamtion regarding pble (idx + pble addr)
* @pble_cnt: #of pbles requested
* @level1_only: true if only pble level 1 to acquire
*/
int irdma_get_pble(struct irdma_hmc_pble_rsrc *pble_rsrc,
struct irdma_pble_alloc *palloc, u32 pble_cnt,
bool level1_only)
{
int status = 0;
int max_sds = 0;
int i;
palloc->total_cnt = pble_cnt;
palloc->level = PBLE_LEVEL_0;
mutex_lock(&pble_rsrc->pble_mutex_lock);
/*check first to see if we can get pble's without acquiring
* additional sd's
*/
status = get_lvl1_lvl2_pble(pble_rsrc, palloc, level1_only);
if (!status)
goto exit;
max_sds = (palloc->total_cnt >> 18) + 1;
for (i = 0; i < max_sds; i++) {
status = add_pble_prm(pble_rsrc);
if (status)
break;
status = get_lvl1_lvl2_pble(pble_rsrc, palloc, level1_only);
/* if level1_only, only go through it once */
if (!status || level1_only)
break;
}
exit:
if (!status) {
pble_rsrc->allocdpbles += pble_cnt;
pble_rsrc->stats_alloc_ok++;
} else {
pble_rsrc->stats_alloc_fail++;
}
mutex_unlock(&pble_rsrc->pble_mutex_lock);
return status;
}
/**
* irdma_free_pble - put pbles back into prm
* @pble_rsrc: pble resources
* @palloc: contains all information regarding pble resource being freed
*/
void irdma_free_pble(struct irdma_hmc_pble_rsrc *pble_rsrc,
struct irdma_pble_alloc *palloc)
{
pble_rsrc->freedpbles += palloc->total_cnt;
if (palloc->level == PBLE_LEVEL_2)
free_lvl2(pble_rsrc, palloc);
else
irdma_prm_return_pbles(&pble_rsrc->pinfo,
&palloc->level1.chunkinfo);
pble_rsrc->stats_alloc_freed++;
}