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