diff options
Diffstat (limited to 'drivers/scsi/csiostor/csio_defs.h')
-rw-r--r-- | drivers/scsi/csiostor/csio_defs.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/drivers/scsi/csiostor/csio_defs.h b/drivers/scsi/csiostor/csio_defs.h new file mode 100644 index 000000000000..c38017b4af98 --- /dev/null +++ b/drivers/scsi/csiostor/csio_defs.h @@ -0,0 +1,121 @@ +/* + * This file is part of the Chelsio FCoE driver for Linux. + * + * Copyright (c) 2008-2012 Chelsio Communications, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#ifndef __CSIO_DEFS_H__ +#define __CSIO_DEFS_H__ + +#include <linux/kernel.h> +#include <linux/stddef.h> +#include <linux/timer.h> +#include <linux/list.h> +#include <linux/bug.h> +#include <linux/pci.h> +#include <linux/jiffies.h> + +#define CSIO_INVALID_IDX 0xFFFFFFFF +#define CSIO_INC_STATS(elem, val) ((elem)->stats.val++) +#define CSIO_DEC_STATS(elem, val) ((elem)->stats.val--) +#define CSIO_VALID_WWN(__n) ((*__n >> 4) == 0x5 ? true : false) +#define CSIO_DID_MASK 0xFFFFFF +#define CSIO_WORD_TO_BYTE 4 + +#ifndef readq +static inline u64 readq(void __iomem *addr) +{ + return readl(addr) + ((u64)readl(addr + 4) << 32); +} + +static inline void writeq(u64 val, void __iomem *addr) +{ + writel(val, addr); + writel(val >> 32, addr + 4); +} +#endif + +static inline int +csio_list_deleted(struct list_head *list) +{ + return ((list->next == list) && (list->prev == list)); +} + +#define csio_list_next(elem) (((struct list_head *)(elem))->next) +#define csio_list_prev(elem) (((struct list_head *)(elem))->prev) + +/* State machine */ +typedef void (*csio_sm_state_t)(void *, uint32_t); + +struct csio_sm { + struct list_head sm_list; + csio_sm_state_t sm_state; +}; + +static inline void +csio_set_state(void *smp, void *state) +{ + ((struct csio_sm *)smp)->sm_state = (csio_sm_state_t)state; +} + +static inline void +csio_init_state(struct csio_sm *smp, void *state) +{ + csio_set_state(smp, state); +} + +static inline void +csio_post_event(void *smp, uint32_t evt) +{ + ((struct csio_sm *)smp)->sm_state(smp, evt); +} + +static inline csio_sm_state_t +csio_get_state(void *smp) +{ + return ((struct csio_sm *)smp)->sm_state; +} + +static inline bool +csio_match_state(void *smp, void *state) +{ + return (csio_get_state(smp) == (csio_sm_state_t)state); +} + +#define CSIO_ASSERT(cond) BUG_ON(!(cond)) + +#ifdef __CSIO_DEBUG__ +#define CSIO_DB_ASSERT(__c) CSIO_ASSERT((__c)) +#else +#define CSIO_DB_ASSERT(__c) +#endif + +#endif /* ifndef __CSIO_DEFS_H__ */ |