linux/drivers/infiniband/hw/irdma/pble.c

// 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)
{ … }

/**
 * 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)
{ … }

/**
 * 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)
{ … }

/**
 * 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)
{ … }

/**
 * 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)
{ … }

/**
 * 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)
{ … }

/**
 * 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)
{ … }

/**
 * 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)
{ … }

/**
 * 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)
{ … }

/**
 * 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)
{ … }

/**
 * 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)
{ … }

/**
 * 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)
 * @lvl: Bitmask for requested pble level
 */
static int get_lvl1_lvl2_pble(struct irdma_hmc_pble_rsrc *pble_rsrc,
			      struct irdma_pble_alloc *palloc, u8 lvl)
{ … }

/**
 * 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
 * @lvl: requested pble level mask
 */
int irdma_get_pble(struct irdma_hmc_pble_rsrc *pble_rsrc,
		   struct irdma_pble_alloc *palloc, u32 pble_cnt,
		   u8 lvl)
{ … }

/**
 * 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)
{ … }