937a7a3ed9
This is a completely rewritten scsipi_xfer execution engine, and the associated changes to HBA drivers. Overview of changes & features: - All xfers are queued in the mid-layer, rather than doing so in an ad-hoc fashion in individual adapter drivers. - Adapter/channel resource management in the mid-layer, avoids even trying to start running an xfer if the adapter/channel doesn't have the resources. - Better communication between the mid-layer and the adapters. - Asynchronous event notification mechanism from adapter to mid-layer and peripherals. - Better peripheral queue management: freeze/thaw, sorted requeueing during recovery, etc. - Clean separation of peripherals, adapters, and adapter channels (no more scsipi_link). - Kernel thread for each scsipi_channel makes error recovery much easier (no more dealing with interrupt context when recovering from an error). - Mid-layer support for tagged queueing: commands can have the tag type set explicitly, tag IDs are allocated in the mid-layer (thus eliminating the need to use buggy tag ID allocation schemes in many adapter drivers). - support for QUEUE FULL and CHECK CONDITION status in mid-layer; the command will be requeued, or a REQUEST SENSE will be sent as appropriate. Just before the merge syssrc has been tagged with thorpej_scsipi_beforemerge
99 lines
4.4 KiB
C
99 lines
4.4 KiB
C
/* $NetBSD: siopvar.h,v 1.16 2001/04/25 17:53:34 bouyer Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2000 Manuel Bouyer.
|
|
*
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Manuel Bouyer
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
|
|
*
|
|
*/
|
|
|
|
/* structure and definitions for the siop driver */
|
|
|
|
TAILQ_HEAD(cmd_list, siop_cmd);
|
|
TAILQ_HEAD(cbd_list, siop_cbd);
|
|
TAILQ_HEAD(lunsw_list, siop_lunsw);
|
|
|
|
/* Driver internal state */
|
|
struct siop_softc {
|
|
struct device sc_dev;
|
|
struct scsipi_channel sc_chan;
|
|
struct scsipi_adapter sc_adapt;
|
|
int features; /* chip's features */
|
|
int ram_size;
|
|
int maxburst;
|
|
int maxoff;
|
|
int clock_div; /* async. clock divider (scntl3) */
|
|
int clock_period; /* clock period (ns * 10) */
|
|
int minsync; /* min and max sync period, */
|
|
int maxsync; /* as sent in SDTR message */
|
|
bus_space_tag_t sc_rt; /* bus_space registers tag */
|
|
bus_space_handle_t sc_rh; /* bus_space registers handle */
|
|
bus_addr_t sc_raddr; /* register adresses */
|
|
bus_space_tag_t sc_ramt; /* bus_space ram tag */
|
|
bus_space_handle_t sc_ramh; /* bus_space ram handle */
|
|
bus_dma_tag_t sc_dmat; /* bus DMA tag */
|
|
void (*sc_reset) __P((struct siop_softc*)); /* reset callback */
|
|
bus_dmamap_t sc_scriptdma; /* DMA map for script */
|
|
bus_addr_t sc_scriptaddr; /* on-board ram or physical adress */
|
|
u_int32_t *sc_script; /* script location in memory */
|
|
int sc_currschedslot; /* current scheduler slot */
|
|
struct cbd_list cmds; /* list of command block descriptors */
|
|
struct cmd_list free_list; /* cmd descr free list */
|
|
struct lunsw_list lunsw_list; /* lunsw free list */
|
|
u_int32_t script_free_lo; /* free ram offset from sc_scriptaddr */
|
|
u_int32_t script_free_hi; /* free ram offset from sc_scriptaddr */
|
|
struct siop_target *targets[16]; /* per-target states */
|
|
int sc_ntargets; /* number of known targets */
|
|
u_int32_t sc_flags;
|
|
};
|
|
/* defs for sc_flags */
|
|
#define SCF_CHAN_NOSLOT 0x0001 /* channel out of sheduler slot */
|
|
|
|
/* features */
|
|
#define SF_BUS_WIDE 0x00000001 /* wide bus */
|
|
#define SF_BUS_ULTRA 0x00000002 /* Ultra (20Mhz) bus */
|
|
#define SF_BUS_ULTRA2 0x00000004 /* Ultra2 (40Mhz) bus */
|
|
#define SF_BUS_DIFF 0x00000008 /* differential bus */
|
|
|
|
#define SF_CHIP_LED0 0x00000100 /* led on GPIO0 */
|
|
#define SF_CHIP_DBLR 0x00000200 /* clock doubler or quadrupler */
|
|
#define SF_CHIP_QUAD 0x00000400 /* clock quadrupler, with PPL */
|
|
#define SF_CHIP_FIFO 0x00000800 /* large fifo */
|
|
#define SF_CHIP_PF 0x00001000 /* Intructions prefetch */
|
|
#define SF_CHIP_RAM 0x00002000 /* on-board RAM */
|
|
#define SF_CHIP_LS 0x00004000 /* load/store instruction */
|
|
#define SF_CHIP_10REGS 0x00008000 /* 10 scratch registers */
|
|
#define SF_CHIP_DFBC 0x00010000 /* Use DFBC register */
|
|
|
|
#define SF_PCI_RL 0x01000000 /* PCI read line */
|
|
#define SF_PCI_RM 0x02000000 /* PCI read multiple */
|
|
#define SF_PCI_BOF 0x04000000 /* PCI burst opcode fetch */
|
|
#define SF_PCI_CLS 0x08000000 /* PCI cache line size */
|
|
#define SF_PCI_WRI 0x10000000 /* PCI write and invalidate */
|
|
|
|
void siop_attach __P((struct siop_softc *));
|
|
int siop_intr __P((void *));
|