mirror of
https://github.com/torvalds/linux.git
synced 2024-12-23 11:21:33 +00:00
7725ccfda5
Add new driver for Brocade Hardware Signed-off-by: Jing Huang <huangj@brocade.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
80 lines
2.5 KiB
C
80 lines
2.5 KiB
C
/*
|
|
* Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
|
|
* All rights reserved
|
|
* www.brocade.com
|
|
*
|
|
* Linux driver for Brocade Fibre Channel Host Bus Adapter.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License (GPL) Version 2 as
|
|
* published by the Free Software Foundation
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*/
|
|
|
|
/**
|
|
* hal_sgpg.h BFA SG page module
|
|
*/
|
|
|
|
#ifndef __BFA_SGPG_PRIV_H__
|
|
#define __BFA_SGPG_PRIV_H__
|
|
|
|
#include <cs/bfa_q.h>
|
|
|
|
#define BFA_SGPG_MIN (16)
|
|
|
|
/**
|
|
* Alignment macro for SG page allocation
|
|
*/
|
|
#define BFA_SGPG_ROUNDUP(_l) (((_l) + (sizeof(struct bfi_sgpg_s) - 1)) \
|
|
& ~(sizeof(struct bfi_sgpg_s) - 1))
|
|
|
|
struct bfa_sgpg_wqe_s {
|
|
struct list_head qe; /* queue sg page element */
|
|
int nsgpg; /* pages to be allocated */
|
|
int nsgpg_total; /* total pages required */
|
|
void (*cbfn) (void *cbarg);
|
|
/* callback function */
|
|
void *cbarg; /* callback arg */
|
|
struct list_head sgpg_q; /* queue of alloced sgpgs */
|
|
};
|
|
|
|
struct bfa_sgpg_s {
|
|
struct list_head qe; /* queue sg page element */
|
|
struct bfi_sgpg_s *sgpg; /* va of SG page */
|
|
union bfi_addr_u sgpg_pa;/* pa of SG page */
|
|
};
|
|
|
|
/**
|
|
* Given number of SG elements, BFA_SGPG_NPAGE() returns the number of
|
|
* SG pages required.
|
|
*/
|
|
#define BFA_SGPG_NPAGE(_nsges) (((_nsges) / BFI_SGPG_DATA_SGES) + 1)
|
|
|
|
struct bfa_sgpg_mod_s {
|
|
struct bfa_s *bfa;
|
|
int num_sgpgs; /* number of SG pages */
|
|
int free_sgpgs; /* number of free SG pages */
|
|
struct bfa_sgpg_s *hsgpg_arr; /* BFA SG page array */
|
|
struct bfi_sgpg_s *sgpg_arr; /* actual SG page array */
|
|
u64 sgpg_arr_pa; /* SG page array DMA addr */
|
|
struct list_head sgpg_q; /* queue of free SG pages */
|
|
struct list_head sgpg_wait_q; /* wait queue for SG pages */
|
|
};
|
|
#define BFA_SGPG_MOD(__bfa) (&(__bfa)->modules.sgpg_mod)
|
|
|
|
bfa_status_t bfa_sgpg_malloc(struct bfa_s *bfa, struct list_head *sgpg_q,
|
|
int nsgpgs);
|
|
void bfa_sgpg_mfree(struct bfa_s *bfa, struct list_head *sgpg_q,
|
|
int nsgpgs);
|
|
void bfa_sgpg_winit(struct bfa_sgpg_wqe_s *wqe,
|
|
void (*cbfn) (void *cbarg), void *cbarg);
|
|
void bfa_sgpg_wait(struct bfa_s *bfa, struct bfa_sgpg_wqe_s *wqe,
|
|
int nsgpgs);
|
|
void bfa_sgpg_wcancel(struct bfa_s *bfa, struct bfa_sgpg_wqe_s *wqe);
|
|
|
|
#endif /* __BFA_SGPG_PRIV_H__ */
|