mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-21 11:13:30 +00:00
391 lines
13 KiB
C
391 lines
13 KiB
C
/*-
|
|
* Copyright (c) 2001 Michael Smith
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* CISS adapter driver datastructures
|
|
*/
|
|
|
|
typedef STAILQ_HEAD(, ciss_request) cr_qhead_t;
|
|
|
|
/************************************************************************
|
|
* Tunable parameters
|
|
*/
|
|
|
|
/*
|
|
* There is no guaranteed upper bound on the number of concurrent
|
|
* commands an adapter may claim to support. Cap it at a reasonable
|
|
* value.
|
|
*/
|
|
#define CISS_MAX_REQUESTS 1024
|
|
|
|
/*
|
|
* Maximum number of logical drives we support.
|
|
* If the controller does not indicate a maximum
|
|
* value. This is a compatibiliy value to support
|
|
* older ciss controllers (e.g. model 6i)
|
|
*/
|
|
#define CISS_MAX_LOGICAL 16
|
|
|
|
/*
|
|
* Maximum number of physical devices we support.
|
|
*/
|
|
#define CISS_MAX_PHYSICAL 1024
|
|
|
|
/*
|
|
* Interrupt reduction can be controlled by tuning the interrupt
|
|
* coalesce delay and count paramters. The delay (in microseconds)
|
|
* defers delivery of interrupts to increase the chance of there being
|
|
* more than one completed command ready when the interrupt is
|
|
* delivered. The count expedites the delivery of the interrupt when
|
|
* the given number of commands are ready.
|
|
*
|
|
* If the delay is set to 0, interrupts are delivered immediately.
|
|
*/
|
|
#define CISS_INTERRUPT_COALESCE_DELAY 0
|
|
#define CISS_INTERRUPT_COALESCE_COUNT 16
|
|
|
|
/*
|
|
* Heartbeat routine timeout in seconds. Note that since event
|
|
* handling is performed on a callback basis, we don't need this to
|
|
* run very often.
|
|
*/
|
|
#define CISS_HEARTBEAT_RATE 10
|
|
|
|
/************************************************************************
|
|
* Driver version. Only really significant to the ACU interface.
|
|
*/
|
|
#define CISS_DRIVER_VERSION 20011201
|
|
|
|
/************************************************************************
|
|
* Driver data structures
|
|
*/
|
|
|
|
/*
|
|
* Each command issued to the adapter is managed by a request
|
|
* structure.
|
|
*/
|
|
struct ciss_request
|
|
{
|
|
STAILQ_ENTRY(ciss_request) cr_link;
|
|
int cr_onq; /* which queue we are on */
|
|
|
|
struct ciss_softc *cr_sc; /* controller softc */
|
|
void *cr_data; /* data buffer */
|
|
u_int32_t cr_length; /* data length */
|
|
bus_dmamap_t cr_datamap; /* DMA map for data */
|
|
struct ciss_command *cr_cc;
|
|
uint32_t cr_ccphys;
|
|
int cr_tag;
|
|
int cr_flags;
|
|
#define CISS_REQ_MAPPED (1<<0) /* data mapped */
|
|
#define CISS_REQ_SLEEP (1<<1) /* submitter sleeping */
|
|
#define CISS_REQ_POLL (1<<2) /* submitter polling */
|
|
#define CISS_REQ_DATAOUT (1<<3) /* data host->adapter */
|
|
#define CISS_REQ_DATAIN (1<<4) /* data adapter->host */
|
|
#define CISS_REQ_BUSY (1<<5) /* controller has req */
|
|
#define CISS_REQ_CCB (1<<6) /* data is ccb */
|
|
|
|
void (* cr_complete)(struct ciss_request *);
|
|
void *cr_private;
|
|
int cr_sg_tag;
|
|
#define CISS_SG_MAX ((CISS_SG_FETCH_MAX << 1) | 0x1)
|
|
#define CISS_SG_1 ((CISS_SG_FETCH_1 << 1) | 0x01)
|
|
#define CISS_SG_2 ((CISS_SG_FETCH_2 << 1) | 0x01)
|
|
#define CISS_SG_4 ((CISS_SG_FETCH_4 << 1) | 0x01)
|
|
#define CISS_SG_8 ((CISS_SG_FETCH_8 << 1) | 0x01)
|
|
#define CISS_SG_16 ((CISS_SG_FETCH_16 << 1) | 0x01)
|
|
#define CISS_SG_32 ((CISS_SG_FETCH_32 << 1) | 0x01)
|
|
#define CISS_SG_NONE ((CISS_SG_FETCH_NONE << 1) | 0x01)
|
|
};
|
|
|
|
/*
|
|
* The adapter command structure is defined with a zero-length
|
|
* scatter/gather list size. In practise, we want space for a
|
|
* scatter-gather list, and we also want to avoid having commands
|
|
* cross page boundaries.
|
|
*
|
|
* The size of the ciss_command is 52 bytes. 65 s/g elements are reserved
|
|
* to allow a max i/o size of 256k. This gives a total command size of
|
|
* 1120 bytes, including the 32 byte alignment padding. Modern controllers
|
|
* seem to saturate nicely at this value.
|
|
*/
|
|
|
|
#define CISS_MAX_SG_ELEMENTS 65
|
|
#define CISS_COMMAND_ALIGN 32
|
|
#define CISS_COMMAND_SG_LENGTH (sizeof(struct ciss_sg_entry) * CISS_MAX_SG_ELEMENTS)
|
|
#define CISS_COMMAND_ALLOC_SIZE (roundup2(sizeof(struct ciss_command) + CISS_COMMAND_SG_LENGTH, CISS_COMMAND_ALIGN))
|
|
|
|
/*
|
|
* Per-logical-drive data.
|
|
*/
|
|
struct ciss_ldrive
|
|
{
|
|
union ciss_device_address cl_address;
|
|
union ciss_device_address *cl_controller;
|
|
int cl_status;
|
|
#define CISS_LD_NONEXISTENT 0
|
|
#define CISS_LD_ONLINE 1
|
|
#define CISS_LD_OFFLINE 2
|
|
|
|
int cl_update;
|
|
|
|
struct ciss_bmic_id_ldrive *cl_ldrive;
|
|
struct ciss_bmic_id_lstatus *cl_lstatus;
|
|
struct ciss_ldrive_geometry cl_geometry;
|
|
|
|
char cl_name[16]; /* device name */
|
|
};
|
|
|
|
/*
|
|
* Per-physical-drive data
|
|
*/
|
|
struct ciss_pdrive
|
|
{
|
|
union ciss_device_address cp_address;
|
|
int cp_online;
|
|
};
|
|
|
|
#define CISS_PHYSICAL_SHIFT 5
|
|
#define CISS_PHYSICAL_BASE (1 << CISS_PHYSICAL_SHIFT)
|
|
#define CISS_MAX_PHYSTGT 256
|
|
|
|
#define CISS_IS_PHYSICAL(bus) (bus >= CISS_PHYSICAL_BASE)
|
|
#define CISS_CAM_TO_PBUS(bus) (bus - CISS_PHYSICAL_BASE)
|
|
|
|
/*
|
|
* Per-adapter data
|
|
*/
|
|
struct ciss_softc
|
|
{
|
|
/* bus connections */
|
|
device_t ciss_dev; /* bus attachment */
|
|
struct cdev *ciss_dev_t; /* control device */
|
|
|
|
struct resource *ciss_regs_resource; /* register interface window */
|
|
int ciss_regs_rid; /* resource ID */
|
|
bus_space_handle_t ciss_regs_bhandle; /* bus space handle */
|
|
bus_space_tag_t ciss_regs_btag; /* bus space tag */
|
|
|
|
struct resource *ciss_cfg_resource; /* config struct interface window */
|
|
int ciss_cfg_rid; /* resource ID */
|
|
struct ciss_config_table *ciss_cfg; /* config table in adapter memory */
|
|
struct ciss_perf_config *ciss_perf; /* config table for the performant */
|
|
struct ciss_bmic_id_table *ciss_id; /* ID table in host memory */
|
|
u_int32_t ciss_heartbeat; /* last heartbeat value */
|
|
int ciss_heart_attack; /* number of times we have seen this value */
|
|
|
|
int ciss_msi;
|
|
struct resource *ciss_irq_resource; /* interrupt */
|
|
int ciss_irq_rid[CISS_MSI_COUNT]; /* resource ID */
|
|
void *ciss_intr; /* interrupt handle */
|
|
|
|
bus_dma_tag_t ciss_parent_dmat; /* parent DMA tag */
|
|
bus_dma_tag_t ciss_buffer_dmat; /* data buffer/command DMA tag */
|
|
|
|
u_int32_t ciss_interrupt_mask; /* controller interrupt mask bits */
|
|
|
|
uint64_t *ciss_reply;
|
|
int ciss_cycle;
|
|
int ciss_rqidx;
|
|
bus_dma_tag_t ciss_reply_dmat;
|
|
bus_dmamap_t ciss_reply_map;
|
|
uint32_t ciss_reply_phys;
|
|
|
|
int ciss_max_requests;
|
|
struct ciss_request ciss_request[CISS_MAX_REQUESTS]; /* requests */
|
|
void *ciss_command; /* command structures */
|
|
bus_dma_tag_t ciss_command_dmat; /* command DMA tag */
|
|
bus_dmamap_t ciss_command_map; /* command DMA map */
|
|
u_int32_t ciss_command_phys; /* command array base address */
|
|
cr_qhead_t ciss_free; /* requests available for reuse */
|
|
cr_qhead_t ciss_notify; /* requests which are defered for processing */
|
|
struct proc *ciss_notify_thread;
|
|
|
|
struct callout ciss_periodic; /* periodic event handling */
|
|
struct ciss_request *ciss_periodic_notify; /* notify callback request */
|
|
|
|
struct mtx ciss_mtx;
|
|
struct ciss_ldrive **ciss_logical;
|
|
struct ciss_pdrive **ciss_physical;
|
|
union ciss_device_address *ciss_controllers; /* controller address */
|
|
int ciss_max_bus_number; /* maximum bus number */
|
|
int ciss_max_logical_bus;
|
|
int ciss_max_physical_bus;
|
|
|
|
struct cam_devq *ciss_cam_devq;
|
|
struct cam_sim **ciss_cam_sim;
|
|
|
|
int ciss_soft_reset;
|
|
|
|
int ciss_flags;
|
|
#define CISS_FLAG_NOTIFY_OK (1<<0) /* notify command running OK */
|
|
#define CISS_FLAG_CONTROL_OPEN (1<<1) /* control device is open */
|
|
#define CISS_FLAG_ABORTING (1<<2) /* driver is going away */
|
|
#define CISS_FLAG_RUNNING (1<<3) /* driver is running (interrupts usable) */
|
|
#define CISS_FLAG_BUSY (1<<4) /* no free commands */
|
|
|
|
#define CISS_FLAG_FAKE_SYNCH (1<<16) /* needs SYNCHRONISE_CACHE faked */
|
|
#define CISS_FLAG_BMIC_ABORT (1<<17) /* use BMIC command to abort Notify on Event */
|
|
#define CISS_FLAG_THREAD_SHUT (1<<20) /* shutdown the kthread */
|
|
|
|
struct ciss_qstat ciss_qstat[CISSQ_COUNT]; /* queue statistics */
|
|
};
|
|
|
|
/************************************************************************
|
|
* Debugging/diagnostic output.
|
|
*/
|
|
|
|
/*
|
|
* Debugging levels:
|
|
* 0 - quiet, only emit warnings
|
|
* 1 - talkative, log major events, but nothing on the I/O path
|
|
* 2 - noisy, log events on the I/O path
|
|
* 3 - extremely noisy, log items in loops
|
|
*/
|
|
#ifdef CISS_DEBUG
|
|
# define debug(level, fmt, args...) \
|
|
do { \
|
|
if (level <= CISS_DEBUG) printf("%s: " fmt "\n", __func__ , ##args); \
|
|
} while(0)
|
|
# define debug_called(level) \
|
|
do { \
|
|
if (level <= CISS_DEBUG) printf("%s: called\n", __func__); \
|
|
} while(0)
|
|
# define debug_struct(s) printf(" SIZE %s: %zu\n", #s, sizeof(struct s))
|
|
# define debug_union(s) printf(" SIZE %s: %zu\n", #s, sizeof(union s))
|
|
# define debug_type(s) printf(" SIZE %s: %zu\n", #s, sizeof(s))
|
|
# define debug_field(s, f) printf(" OFFSET %s.%s: %d\n", #s, #f, ((int)&(((struct s *)0)->f)))
|
|
# define debug_const(c) printf(" CONST %s %jd/0x%jx\n", #c, (intmax_t)c, (intmax_t)c);
|
|
#else
|
|
# define debug(level, fmt, args...)
|
|
# define debug_called(level)
|
|
# define debug_struct(s)
|
|
# define debug_union(s)
|
|
# define debug_type(s)
|
|
# define debug_field(s, f)
|
|
# define debug_const(c)
|
|
#endif
|
|
|
|
#define ciss_printf(sc, fmt, args...) device_printf(sc->ciss_dev, fmt , ##args)
|
|
|
|
/************************************************************************
|
|
* Queue primitives
|
|
*/
|
|
|
|
#define CISSQ_ADD(sc, qname) \
|
|
do { \
|
|
struct ciss_qstat *qs = &(sc)->ciss_qstat[qname]; \
|
|
\
|
|
qs->q_length++; \
|
|
if (qs->q_length > qs->q_max) \
|
|
qs->q_max = qs->q_length; \
|
|
} while(0)
|
|
|
|
#define CISSQ_REMOVE(sc, qname) (sc)->ciss_qstat[qname].q_length--
|
|
#define CISSQ_INIT(sc, qname) \
|
|
do { \
|
|
sc->ciss_qstat[qname].q_length = 0; \
|
|
sc->ciss_qstat[qname].q_max = 0; \
|
|
} while(0)
|
|
|
|
|
|
#define CISSQ_REQUEST_QUEUE(name, index) \
|
|
static __inline void \
|
|
ciss_initq_ ## name (struct ciss_softc *sc) \
|
|
{ \
|
|
STAILQ_INIT(&sc->ciss_ ## name); \
|
|
CISSQ_INIT(sc, index); \
|
|
} \
|
|
static __inline void \
|
|
ciss_enqueue_ ## name (struct ciss_request *cr) \
|
|
{ \
|
|
\
|
|
STAILQ_INSERT_TAIL(&cr->cr_sc->ciss_ ## name, cr, cr_link); \
|
|
CISSQ_ADD(cr->cr_sc, index); \
|
|
cr->cr_onq = index; \
|
|
} \
|
|
static __inline void \
|
|
ciss_requeue_ ## name (struct ciss_request *cr) \
|
|
{ \
|
|
\
|
|
STAILQ_INSERT_HEAD(&cr->cr_sc->ciss_ ## name, cr, cr_link); \
|
|
CISSQ_ADD(cr->cr_sc, index); \
|
|
cr->cr_onq = index; \
|
|
} \
|
|
static __inline struct ciss_request * \
|
|
ciss_dequeue_ ## name (struct ciss_softc *sc) \
|
|
{ \
|
|
struct ciss_request *cr; \
|
|
\
|
|
if ((cr = STAILQ_FIRST(&sc->ciss_ ## name)) != NULL) { \
|
|
STAILQ_REMOVE_HEAD(&sc->ciss_ ## name, cr_link); \
|
|
CISSQ_REMOVE(sc, index); \
|
|
cr->cr_onq = -1; \
|
|
} \
|
|
return(cr); \
|
|
} \
|
|
struct hack
|
|
|
|
CISSQ_REQUEST_QUEUE(free, CISSQ_FREE);
|
|
CISSQ_REQUEST_QUEUE(notify, CISSQ_NOTIFY);
|
|
|
|
static __inline void
|
|
ciss_enqueue_complete(struct ciss_request *ac, cr_qhead_t *head)
|
|
{
|
|
|
|
STAILQ_INSERT_TAIL(head, ac, cr_link);
|
|
}
|
|
|
|
static __inline struct ciss_request *
|
|
ciss_dequeue_complete(struct ciss_softc *sc, cr_qhead_t *head)
|
|
{
|
|
struct ciss_request *ac;
|
|
|
|
if ((ac = STAILQ_FIRST(head)) != NULL)
|
|
STAILQ_REMOVE_HEAD(head, cr_link);
|
|
return(ac);
|
|
}
|
|
|
|
/********************************************************************************
|
|
* space-fill a character string
|
|
*/
|
|
static __inline void
|
|
padstr(char *targ, const char *src, int len)
|
|
{
|
|
while (len-- > 0) {
|
|
if (*src != 0) {
|
|
*targ++ = *src++;
|
|
} else {
|
|
*targ++ = ' ';
|
|
}
|
|
}
|
|
}
|
|
|
|
#define ciss_report_request(a, b, c) \
|
|
_ciss_report_request(a, b, c, __FUNCTION__)
|