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| Current File : //sys/dev/twa/tw_cl.h |
/*
* Copyright (c) 2004-07 Applied Micro Circuits Corporation.
* Copyright (c) 2004-05 Vinod Kashyap
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD: release/9.1.0/sys/dev/twa/tw_cl.h 212008 2010-08-30 19:15:04Z delphij $
*/
/*
* AMCC'S 3ware driver for 9000 series storage controllers.
*
* Author: Vinod Kashyap
* Modifications by: Adam Radford
*/
#ifndef TW_CL_H
#define TW_CL_H
/*
* Common Layer internal macros, structures and functions.
*/
#define TW_CLI_SECTOR_SIZE 0x200
#define TW_CLI_REQUEST_TIMEOUT_PERIOD 60 /* seconds */
#define TW_CLI_RESET_TIMEOUT_PERIOD 60 /* seconds */
#define TW_CLI_MAX_RESET_ATTEMPTS 2
/* Possible values of ctlr->ioctl_lock.lock. */
#define TW_CLI_LOCK_FREE 0x0 /* lock is free */
#define TW_CLI_LOCK_HELD 0x1 /* lock is held */
/* Possible values of req->state. */
#define TW_CLI_REQ_STATE_INIT 0x0 /* being initialized */
#define TW_CLI_REQ_STATE_BUSY 0x1 /* submitted to controller */
#define TW_CLI_REQ_STATE_PENDING 0x2 /* in pending queue */
#define TW_CLI_REQ_STATE_COMPLETE 0x3 /* completed by controller */
/* Possible values of req->flags. */
#define TW_CLI_REQ_FLAGS_7K (1<<0) /* 7000 cmd pkt */
#define TW_CLI_REQ_FLAGS_9K (1<<1) /* 9000 cmd pkt */
#define TW_CLI_REQ_FLAGS_INTERNAL (1<<2) /* internal request */
#define TW_CLI_REQ_FLAGS_PASSTHRU (1<<3) /* passthru request */
#define TW_CLI_REQ_FLAGS_EXTERNAL (1<<4) /* external request */
#ifdef TW_OSL_PCI_CONFIG_ACCESSIBLE
/* Register offsets in PCI config space. */
#define TW_CLI_PCI_CONFIG_COMMAND_OFFSET 0x4 /* cmd register offset */
#define TW_CLI_PCI_CONFIG_STATUS_OFFSET 0x6 /* status register offset */
#endif /* TW_OSL_PCI_CONFIG_ACCESSIBLE */
#ifdef TW_OSL_DEBUG
struct tw_cli_q_stats {
TW_UINT32 cur_len;/* current # of entries in q */
TW_UINT32 max_len; /* max # of entries in q, ever reached */
};
#endif /* TW_OSL_DEBUG */
/* Queues of CL internal request context packets. */
#define TW_CLI_FREE_Q 0 /* free q */
#define TW_CLI_BUSY_Q 1 /* q of reqs submitted to fw */
#define TW_CLI_PENDING_Q 2 /* q of reqs deferred due to 'q full' */
#define TW_CLI_COMPLETE_Q 3 /* q of reqs completed by fw */
#define TW_CLI_RESET_Q 4 /* q of reqs reset by timeout */
#define TW_CLI_Q_COUNT 5 /* total number of queues */
/* CL's internal request context. */
struct tw_cli_req_context {
struct tw_cl_req_handle *req_handle;/* handle to track requests between
OSL & CL */
struct tw_cli_ctlr_context *ctlr; /* ptr to CL's controller context */
struct tw_cl_command_packet *cmd_pkt;/* ptr to ctlr cmd pkt */
TW_UINT64 cmd_pkt_phys; /* cmd pkt physical address */
TW_VOID *data; /* ptr to data being passed to fw */
TW_UINT32 length; /* length of data being passed to fw */
TW_UINT64 data_phys; /* physical address of data */
TW_UINT32 state; /* request state */
TW_UINT32 flags; /* request flags */
TW_UINT32 error_code; /* error encountered before submission
of request to fw, if any */
TW_VOID *orig_req; /* ptr to original request for use
during callback */
TW_VOID (*tw_cli_callback)(struct tw_cli_req_context *req);
/* CL internal callback */
TW_UINT32 request_id; /* request id for tracking with fw */
struct tw_cl_link link; /* to link this request in a list */
};
/* CL's internal controller context. */
struct tw_cli_ctlr_context {
struct tw_cl_ctlr_handle *ctlr_handle; /* handle to track ctlr between
OSL & CL. */
struct tw_cli_req_context *req_ctxt_buf;/* pointer to the array of CL's
internal request context pkts */
struct tw_cl_command_packet *cmd_pkt_buf;/* ptr to array of cmd pkts */
TW_UINT64 cmd_pkt_phys; /* phys addr of cmd_pkt_buf */
TW_UINT32 device_id; /* controller device id */
TW_UINT32 arch_id; /* controller architecture id */
TW_UINT8 active; /* Initialization done, and controller is active. */
TW_UINT8 interrupts_enabled; /* Interrupts on controller enabled. */
TW_UINT8 internal_req_busy; /* Data buffer for internal requests in use. */
TW_UINT8 get_more_aens; /* More AEN's need to be retrieved. */
TW_UINT8 reset_needed; /* Controller needs a soft reset. */
TW_UINT8 reset_in_progress; /* Controller is being reset. */
TW_UINT8 reset_phase1_in_progress; /* In 'phase 1' of reset. */
TW_UINT32 flags; /* controller settings */
TW_UINT32 sg_size_factor; /* SG element size should be a
multiple of this */
/* Request queues and arrays. */
struct tw_cl_link req_q_head[TW_CLI_Q_COUNT];
TW_UINT8 *internal_req_data;/* internal req data buf */
TW_UINT64 internal_req_data_phys;/* phys addr of internal
req data buf */
TW_UINT32 max_simult_reqs; /* max simultaneous requests
supported */
TW_UINT32 max_aens_supported;/* max AEN's supported */
/* AEN handler fields. */
struct tw_cl_event_packet *aen_queue; /* circular queue of AENs from
firmware/CL/OSL */
TW_UINT32 aen_head; /* AEN queue head */
TW_UINT32 aen_tail; /* AEN queue tail */
TW_UINT32 aen_cur_seq_id; /* index of the last event+1 */
TW_UINT32 aen_q_overflow; /* indicates if unretrieved
events were overwritten */
TW_UINT32 aen_q_wrapped; /* indicates if AEN queue ever
wrapped */
TW_UINT16 working_srl; /* driver & firmware negotiated
srl */
TW_UINT16 working_branch; /* branch # of the firmware
that the driver is compatible with */
TW_UINT16 working_build; /* build # of the firmware
that the driver is compatible with */
TW_UINT16 fw_on_ctlr_srl; /* srl of running firmware */
TW_UINT16 fw_on_ctlr_branch;/* branch # of running
firmware */
TW_UINT16 fw_on_ctlr_build;/* build # of running
firmware */
TW_UINT32 operating_mode; /* base mode/current mode */
TW_INT32 host_intr_pending;/* host intr processing
needed */
TW_INT32 attn_intr_pending;/* attn intr processing
needed */
TW_INT32 cmd_intr_pending;/* cmd intr processing
needed */
TW_INT32 resp_intr_pending;/* resp intr processing
needed */
TW_LOCK_HANDLE gen_lock_handle;/* general purpose lock */
TW_LOCK_HANDLE *gen_lock;/* ptr to general purpose lock */
TW_LOCK_HANDLE io_lock_handle; /* lock held during cmd
submission */
TW_LOCK_HANDLE *io_lock;/* ptr to lock held during cmd
submission */
#ifdef TW_OSL_CAN_SLEEP
TW_SLEEP_HANDLE sleep_handle; /* handle to co-ordinate sleeps
& wakeups */
#endif /* TW_OSL_CAN_SLEEP */
struct {
TW_UINT32 lock; /* lock state */
TW_TIME timeout; /* time at which the lock will
become available, even if not
explicitly released */
} ioctl_lock; /* lock for use by user applications, for
synchronization between ioctl calls */
#ifdef TW_OSL_DEBUG
struct tw_cli_q_stats q_stats[TW_CLI_Q_COUNT];/* queue statistics */
#endif /* TW_OSL_DEBUG */
};
/*
* Queue primitives
*/
#ifdef TW_OSL_DEBUG
#define TW_CLI_Q_INIT(ctlr, q_type) do { \
(ctlr)->q_stats[q_type].cur_len = 0; \
(ctlr)->q_stats[q_type].max_len = 0; \
} while (0)
#define TW_CLI_Q_INSERT(ctlr, q_type) do { \
struct tw_cli_q_stats *q_stats = &((ctlr)->q_stats[q_type]); \
\
if (++(q_stats->cur_len) > q_stats->max_len) \
q_stats->max_len = q_stats->cur_len; \
} while (0)
#define TW_CLI_Q_REMOVE(ctlr, q_type) \
(ctlr)->q_stats[q_type].cur_len--
#else /* TW_OSL_DEBUG */
#define TW_CLI_Q_INIT(ctlr, q_index)
#define TW_CLI_Q_INSERT(ctlr, q_index)
#define TW_CLI_Q_REMOVE(ctlr, q_index)
#endif /* TW_OSL_DEBUG */
/* Initialize a queue of requests. */
static __inline TW_VOID
tw_cli_req_q_init(struct tw_cli_ctlr_context *ctlr, TW_UINT8 q_type)
{
TW_CL_Q_INIT(&(ctlr->req_q_head[q_type]));
TW_CLI_Q_INIT(ctlr, q_type);
}
/* Insert the given request at the head of the given queue (q_type). */
static __inline TW_VOID
tw_cli_req_q_insert_head(struct tw_cli_req_context *req, TW_UINT8 q_type)
{
struct tw_cli_ctlr_context *ctlr = req->ctlr;
tw_osl_get_lock(ctlr->ctlr_handle, ctlr->gen_lock);
TW_CL_Q_INSERT_HEAD(&(ctlr->req_q_head[q_type]), &(req->link));
TW_CLI_Q_INSERT(ctlr, q_type);
tw_osl_free_lock(ctlr->ctlr_handle, ctlr->gen_lock);
}
/* Insert the given request at the tail of the given queue (q_type). */
static __inline TW_VOID
tw_cli_req_q_insert_tail(struct tw_cli_req_context *req, TW_UINT8 q_type)
{
struct tw_cli_ctlr_context *ctlr = req->ctlr;
tw_osl_get_lock(ctlr->ctlr_handle, ctlr->gen_lock);
TW_CL_Q_INSERT_TAIL(&(ctlr->req_q_head[q_type]), &(req->link));
TW_CLI_Q_INSERT(ctlr, q_type);
tw_osl_free_lock(ctlr->ctlr_handle, ctlr->gen_lock);
}
/* Remove and return the request at the head of the given queue (q_type). */
static __inline struct tw_cli_req_context *
tw_cli_req_q_remove_head(struct tw_cli_ctlr_context *ctlr, TW_UINT8 q_type)
{
struct tw_cli_req_context *req = TW_CL_NULL;
struct tw_cl_link *link;
tw_osl_get_lock(ctlr->ctlr_handle, ctlr->gen_lock);
if ((link = TW_CL_Q_FIRST_ITEM(&(ctlr->req_q_head[q_type]))) !=
TW_CL_NULL) {
req = TW_CL_STRUCT_HEAD(link,
struct tw_cli_req_context, link);
TW_CL_Q_REMOVE_ITEM(&(ctlr->req_q_head[q_type]), &(req->link));
TW_CLI_Q_REMOVE(ctlr, q_type);
}
tw_osl_free_lock(ctlr->ctlr_handle, ctlr->gen_lock);
return(req);
}
/* Remove the given request from the given queue (q_type). */
static __inline TW_VOID
tw_cli_req_q_remove_item(struct tw_cli_req_context *req, TW_UINT8 q_type)
{
struct tw_cli_ctlr_context *ctlr = req->ctlr;
tw_osl_get_lock(ctlr->ctlr_handle, ctlr->gen_lock);
TW_CL_Q_REMOVE_ITEM(&(ctlr->req_q_head[q_type]), &(req->link));
TW_CLI_Q_REMOVE(ctlr, q_type);
tw_osl_free_lock(ctlr->ctlr_handle, ctlr->gen_lock);
}
/* Create an event packet for an event/error posted by the controller. */
#define tw_cli_create_ctlr_event(ctlr, event_src, cmd_hdr) do { \
TW_UINT8 severity = \
GET_SEVERITY((cmd_hdr)->status_block.res__severity); \
\
tw_cl_create_event(ctlr->ctlr_handle, TW_CL_TRUE, event_src, \
(cmd_hdr)->status_block.error, \
severity, \
tw_cli_severity_string_table[severity], \
(cmd_hdr)->err_specific_desc + \
tw_osl_strlen((cmd_hdr)->err_specific_desc) + 1, \
(cmd_hdr)->err_specific_desc); \
/* Print 18 bytes of sense information. */ \
tw_cli_dbg_printf(2, ctlr->ctlr_handle, \
tw_osl_cur_func(), \
"sense info: %x %x %x %x %x %x %x %x %x " \
"%x %x %x %x %x %x %x %x %x", \
(cmd_hdr)->sense_data[0], (cmd_hdr)->sense_data[1], \
(cmd_hdr)->sense_data[2], (cmd_hdr)->sense_data[3], \
(cmd_hdr)->sense_data[4], (cmd_hdr)->sense_data[5], \
(cmd_hdr)->sense_data[6], (cmd_hdr)->sense_data[7], \
(cmd_hdr)->sense_data[8], (cmd_hdr)->sense_data[9], \
(cmd_hdr)->sense_data[10], (cmd_hdr)->sense_data[11], \
(cmd_hdr)->sense_data[12], (cmd_hdr)->sense_data[13], \
(cmd_hdr)->sense_data[14], (cmd_hdr)->sense_data[15], \
(cmd_hdr)->sense_data[16], (cmd_hdr)->sense_data[17]); \
} while (0)
#endif /* TW_CL_H */