forked from Minki/linux
75c28851c9
AM53C974A's Start Transfer Counter register has 24 bits, thus maximum transfer length is 16MiB. But the maximum I can test is 8MiB, so use that until somebody tests 16MiB. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2716 lines
80 KiB
C
2716 lines
80 KiB
C
/************************************************************************
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* FILE NAME : TMSCSIM.C *
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* BY : C.L. Huang, ching@tekram.com.tw *
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* Description: Device Driver for Tekram DC-390(T) PCI SCSI *
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* Bus Master Host Adapter *
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* (C)Copyright 1995-1996 Tekram Technology Co., Ltd. *
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************************************************************************
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* (C) Copyright: put under GNU GPL in 10/96 *
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* (see Documentation/scsi/tmscsim.txt) *
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************************************************************************
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* $Id: tmscsim.c,v 2.60.2.30 2000/12/20 01:07:12 garloff Exp $ *
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* Enhancements and bugfixes by *
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* Kurt Garloff <kurt@garloff.de> <garloff@suse.de> *
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************************************************************************
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* HISTORY: *
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* *
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* REV# DATE NAME DESCRIPTION *
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* 1.00 96/04/24 CLH First release *
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* 1.01 96/06/12 CLH Fixed bug of Media Change for Removable *
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* Device, scan all LUN. Support Pre2.0.10 *
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* 1.02 96/06/18 CLH Fixed bug of Command timeout ... *
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* 1.03 96/09/25 KG Added tmscsim_proc_info() *
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* 1.04 96/10/11 CLH Updating for support KV 2.0.x *
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* 1.05 96/10/18 KG Fixed bug in DC390_abort(null ptr deref)*
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* 1.06 96/10/25 KG Fixed module support *
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* 1.07 96/11/09 KG Fixed tmscsim_proc_info() *
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* 1.08 96/11/18 KG Fixed null ptr in DC390_Disconnect() *
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* 1.09 96/11/30 KG Added register the allocated IO space *
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* 1.10 96/12/05 CLH Modified tmscsim_proc_info(), and reset *
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* pending interrupt in DC390_detect() *
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* 1.11 97/02/05 KG/CLH Fixeds problem with partitions greater *
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* than 1GB *
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* 1.12 98/02/15 MJ Rewritten PCI probing *
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* 1.13 98/04/08 KG Support for non DC390, __initfunc decls,*
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* changed max devs from 10 to 16 *
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* 1.14a 98/05/05 KG Dynamic DCB allocation, add-single-dev *
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* for LUNs if LUN_SCAN (BIOS) not set *
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* runtime config using /proc interface *
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* 1.14b 98/05/06 KG eliminated cli (); sti (); spinlocks *
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* 1.14c 98/05/07 KG 2.0.x compatibility *
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* 1.20a 98/05/07 KG changed names of funcs to be consistent *
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* DC390_ (entry points), dc390_ (internal)*
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* reworked locking *
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* 1.20b 98/05/12 KG bugs: version, kfree, _ctmp *
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* debug output *
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* 1.20c 98/05/12 KG bugs: kfree, parsing, EEpromDefaults *
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* 1.20d 98/05/14 KG bugs: list linkage, clear flag after *
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* reset on startup, code cleanup *
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* 1.20e 98/05/15 KG spinlock comments, name space cleanup *
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* pLastDCB now part of ACB structure *
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* added stats, timeout for 2.1, TagQ bug *
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* RESET and INQUIRY interface commands *
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* 1.20f 98/05/18 KG spinlocks fixes, max_lun fix, free DCBs *
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* for missing LUNs, pending int *
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* 1.20g 98/05/19 KG Clean up: Avoid short *
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* 1.20h 98/05/21 KG Remove AdaptSCSIID, max_lun ... *
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* 1.20i 98/05/21 KG Aiiie: Bug with TagQMask *
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* 1.20j 98/05/24 KG Handle STAT_BUSY, handle pACB->pLinkDCB *
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* == 0 in remove_dev and DoingSRB_Done *
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* 1.20k 98/05/25 KG DMA_INT (experimental) *
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* 1.20l 98/05/27 KG remove DMA_INT; DMA_IDLE cmds added; *
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* 1.20m 98/06/10 KG glitch configurable; made some global *
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* vars part of ACB; use DC390_readX *
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* 1.20n 98/06/11 KG startup params *
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* 1.20o 98/06/15 KG added TagMaxNum to boot/module params *
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* Device Nr -> Idx, TagMaxNum power of 2 *
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* 1.20p 98/06/17 KG Docu updates. Reset depends on settings *
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* pci_set_master added; 2.0.xx: pcibios_* *
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* used instead of MechNum things ... *
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* 1.20q 98/06/23 KG Changed defaults. Added debug code for *
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* removable media and fixed it. TagMaxNum *
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* fixed for DC390. Locking: ACB, DRV for *
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* better IRQ sharing. Spelling: Queueing *
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* Parsing and glitch_cfg changes. Display *
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* real SyncSpeed value. Made DisConn *
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* functional (!) *
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* 1.20r 98/06/30 KG Debug macros, allow disabling DsCn, set *
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* BIT4 in CtrlR4, EN_PAGE_INT, 2.0 module *
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* param -1 fixed. *
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* 1.20s 98/08/20 KG Debug info on abort(), try to check PCI,*
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* phys_to_bus instead of phys_to_virt, *
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* fixed sel. process, fixed locking, *
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* added MODULE_XXX infos, changed IRQ *
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* request flags, disable DMA_INT *
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* 1.20t 98/09/07 KG TagQ report fixed; Write Erase DMA Stat;*
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* initfunc -> __init; better abort; *
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* Timeout for XFER_DONE & BLAST_COMPLETE; *
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* Allow up to 33 commands being processed *
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* 2.0a 98/10/14 KG Max Cmnds back to 17. DMA_Stat clearing *
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* all flags. Clear within while() loops *
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* in DataIn_0/Out_0. Null ptr in dumpinfo *
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* for pSRB==0. Better locking during init.*
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* bios_param() now respects part. table. *
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* 2.0b 98/10/24 KG Docu fixes. Timeout Msg in DMA Blast. *
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* Disallow illegal idx in INQUIRY/REMOVE *
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* 2.0c 98/11/19 KG Cleaned up detect/init for SMP boxes, *
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* Write Erase DMA (1.20t) caused problems *
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* 2.0d 98/12/25 KG Christmas release ;-) Message handling *
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* completely reworked. Handle target ini- *
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* tiated SDTR correctly. *
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* 2.0d1 99/01/25 KG Try to handle RESTORE_PTR *
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* 2.0d2 99/02/08 KG Check for failure of kmalloc, correct *
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* inclusion of scsicam.h, DelayReset *
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* 2.0d3 99/05/31 KG DRIVER_OK -> DID_OK, DID_NO_CONNECT, *
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* detect Target mode and warn. *
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* pcmd->result handling cleaned up. *
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* 2.0d4 99/06/01 KG Cleaned selection process. Found bug *
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* which prevented more than 16 tags. Now: *
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* 24. SDTR cleanup. Cleaner multi-LUN *
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* handling. Don't modify ControlRegs/FIFO *
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* when connected. *
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* 2.0d5 99/06/01 KG Clear DevID, Fix INQUIRY after cfg chg. *
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* 2.0d6 99/06/02 KG Added ADD special command to allow cfg. *
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* before detection. Reset SYNC_NEGO_DONE *
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* after a bus reset. *
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* 2.0d7 99/06/03 KG Fixed bugs wrt add,remove commands *
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* 2.0d8 99/06/04 KG Removed copying of cmnd into CmdBlock. *
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* Fixed Oops in _release(). *
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* 2.0d9 99/06/06 KG Also tag queue INQUIRY, T_U_R, ... *
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* Allow arb. no. of Tagged Cmnds. Max 32 *
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* 2.0d1099/06/20 KG TagMaxNo changes now honoured! Queueing *
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* clearified (renamed ..) TagMask handling*
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* cleaned. *
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* 2.0d1199/06/28 KG cmd->result now identical to 2.0d2 *
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* 2.0d1299/07/04 KG Changed order of processing in IRQ *
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* 2.0d1399/07/05 KG Don't update DCB fields if removed *
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* 2.0d1499/07/05 KG remove_dev: Move kfree() to the end *
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* 2.0d1599/07/12 KG use_new_eh_code: 0, ULONG -> UINT where *
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* appropriate *
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* 2.0d1699/07/13 KG Reenable StartSCSI interrupt, Retry msg *
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* 2.0d1799/07/15 KG Remove debug msg. Disable recfg. when *
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* there are queued cmnds *
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* 2.0d1899/07/18 KG Selection timeout: Don't requeue *
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* 2.0d1999/07/18 KG Abort: Only call scsi_done if dequeued *
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* 2.0d2099/07/19 KG Rst_Detect: DoingSRB_Done *
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* 2.0d2199/08/15 KG dev_id for request/free_irq, cmnd[0] for*
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* RETRY, SRBdone does DID_ABORT for the *
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* cmd passed by DC390_reset() *
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* 2.0d2299/08/25 KG dev_id fixed. can_queue: 42 *
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* 2.0d2399/08/25 KG Removed some debugging code. dev_id *
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* now is set to pACB. Use u8,u16,u32. *
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* 2.0d2499/11/14 KG Unreg. I/O if failed IRQ alloc. Call *
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* done () w/ DID_BAD_TARGET in case of *
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* missing DCB. We are old EH!! *
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* 2.0d2500/01/15 KG 2.3.3x compat from Andreas Schultz *
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* set unique_id. Disable RETRY message. *
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* 2.0d2600/01/29 KG Go to new EH. *
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* 2.0d2700/01/31 KG ... but maintain 2.0 compat. *
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* and fix DCB freeing *
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* 2.0d2800/02/14 KG Queue statistics fixed, dump special cmd*
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* Waiting_Timer for failed StartSCSI *
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* New EH: Don't return cmnds to ML on RST *
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* Use old EH (don't have new EH fns yet) *
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* Reset: Unlock, but refuse to queue *
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* 2.3 __setup function *
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* 2.0e 00/05/22 KG Return residual for 2.3 *
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* 2.0e1 00/05/25 KG Compile fixes for 2.3.99 *
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* 2.0e2 00/05/27 KG Jeff Garzik's pci_enable_device() *
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* 2.0e3 00/09/29 KG Some 2.4 changes. Don't try Sync Nego *
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* before INQUIRY has reported ability. *
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* Recognise INQUIRY as scanning command. *
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* 2.0e4 00/10/13 KG Allow compilation into 2.4 kernel *
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* 2.0e5 00/11/17 KG Store Inq.flags in DCB *
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* 2.0e6 00/11/22 KG 2.4 init function (Thx to O.Schumann) *
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* 2.4 PCI device table (Thx to A.Richter) *
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* 2.0e7 00/11/28 KG Allow overriding of BIOS settings *
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* 2.0f 00/12/20 KG Handle failed INQUIRYs during scan *
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* 2.1a 03/11/29 GL, KG Initial fixing for 2.6. Convert to *
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* use the current PCI-mapping API, update *
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* command-queuing. *
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* 2.1b 04/04/13 GL Fix for 64-bit platforms *
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* 2.1b1 04/01/31 GL (applied 05.04) Remove internal *
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* command-queuing. *
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* 2.1b2 04/02/01 CH (applied 05.04) Fix error-handling *
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* 2.1c 04/05/23 GL Update to use the new pci_driver API, *
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* some scsi EH updates, more cleanup. *
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* 2.1d 04/05/27 GL Moved setting of scan_devices to *
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* slave_alloc/_configure/_destroy, as *
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* suggested by CH. *
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***********************************************************************/
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/* DEBUG options */
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//#define DC390_DEBUG0
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//#define DC390_DEBUG1
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//#define DC390_DCBDEBUG
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//#define DC390_PARSEDEBUG
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//#define DC390_REMOVABLEDEBUG
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//#define DC390_LOCKDEBUG
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//#define NOP do{}while(0)
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#define C_NOP
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/* Debug definitions */
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#ifdef DC390_DEBUG0
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# define DEBUG0(x) x
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#else
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# define DEBUG0(x) C_NOP
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#endif
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#ifdef DC390_DEBUG1
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# define DEBUG1(x) x
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#else
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# define DEBUG1(x) C_NOP
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#endif
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#ifdef DC390_DCBDEBUG
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# define DCBDEBUG(x) x
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#else
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# define DCBDEBUG(x) C_NOP
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#endif
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#ifdef DC390_PARSEDEBUG
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# define PARSEDEBUG(x) x
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#else
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# define PARSEDEBUG(x) C_NOP
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#endif
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#ifdef DC390_REMOVABLEDEBUG
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# define REMOVABLEDEBUG(x) x
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#else
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# define REMOVABLEDEBUG(x) C_NOP
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#endif
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#define DCBDEBUG1(x) C_NOP
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#include <linux/module.h>
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#include <linux/delay.h>
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#include <linux/signal.h>
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#include <linux/sched.h>
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/ioport.h>
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#include <linux/pci.h>
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#include <linux/proc_fs.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/blkdev.h>
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#include <linux/timer.h>
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#include <linux/interrupt.h>
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#include <linux/init.h>
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#include <linux/spinlock.h>
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#include <asm/io.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsicam.h>
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#include <scsi/scsi_tcq.h>
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#define DC390_BANNER "Tekram DC390/AM53C974"
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#define DC390_VERSION "2.1d 2004-05-27"
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#define PCI_DEVICE_ID_AMD53C974 PCI_DEVICE_ID_AMD_SCSI
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#include "tmscsim.h"
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static void dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
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static void dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
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static void dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
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static void dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
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static void dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
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static void dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
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static void dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
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static void dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
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static void dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
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static void dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
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static void dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
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static void dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
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static void dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
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static void dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
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static void dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB );
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static void dc390_Disconnect( struct dc390_acb* pACB );
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static void dc390_Reselect( struct dc390_acb* pACB );
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static void dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB );
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static void dc390_ScsiRstDetect( struct dc390_acb* pACB );
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static void dc390_EnableMsgOut_Abort(struct dc390_acb*, struct dc390_srb*);
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static void dc390_dumpinfo(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB);
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static void dc390_ResetDevParam(struct dc390_acb* pACB);
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static u32 dc390_laststatus = 0;
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static u8 dc390_adapterCnt = 0;
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static int disable_clustering;
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module_param(disable_clustering, int, S_IRUGO);
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MODULE_PARM_DESC(disable_clustering, "If you experience problems with your devices, try setting to 1");
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/* Startup values, to be overriden on the commandline */
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static int tmscsim[] = {-2, -2, -2, -2, -2, -2};
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module_param_array(tmscsim, int, NULL, 0);
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MODULE_PARM_DESC(tmscsim, "Host SCSI ID, Speed (0=10MHz), Device Flags, Adapter Flags, Max Tags (log2(tags)-1), DelayReset (s)");
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MODULE_AUTHOR("C.L. Huang / Kurt Garloff");
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MODULE_DESCRIPTION("SCSI host adapter driver for Tekram DC390 and other AMD53C974A based PCI SCSI adapters");
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MODULE_LICENSE("GPL");
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MODULE_SUPPORTED_DEVICE("sd,sr,sg,st");
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static void *dc390_phase0[]={
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dc390_DataOut_0,
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dc390_DataIn_0,
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dc390_Command_0,
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dc390_Status_0,
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dc390_Nop_0,
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dc390_Nop_0,
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dc390_MsgOut_0,
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dc390_MsgIn_0,
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dc390_Nop_1
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};
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static void *dc390_phase1[]={
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dc390_DataOutPhase,
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dc390_DataInPhase,
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dc390_CommandPhase,
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dc390_StatusPhase,
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dc390_Nop_0,
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dc390_Nop_0,
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dc390_MsgOutPhase,
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dc390_MsgInPhase,
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dc390_Nop_1
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};
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#ifdef DC390_DEBUG1
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static char* dc390_p0_str[] = {
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"dc390_DataOut_0",
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"dc390_DataIn_0",
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"dc390_Command_0",
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"dc390_Status_0",
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"dc390_Nop_0",
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"dc390_Nop_0",
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"dc390_MsgOut_0",
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"dc390_MsgIn_0",
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"dc390_Nop_1"
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};
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static char* dc390_p1_str[] = {
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"dc390_DataOutPhase",
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"dc390_DataInPhase",
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"dc390_CommandPhase",
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"dc390_StatusPhase",
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"dc390_Nop_0",
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"dc390_Nop_0",
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"dc390_MsgOutPhase",
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"dc390_MsgInPhase",
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"dc390_Nop_1"
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};
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#endif
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static u8 dc390_eepromBuf[MAX_ADAPTER_NUM][EE_LEN];
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static u8 dc390_clock_period1[] = {4, 5, 6, 7, 8, 10, 13, 20};
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static u8 dc390_clock_speed[] = {100,80,67,57,50, 40, 31, 20};
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/***********************************************************************
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* Functions for the management of the internal structures
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* (DCBs, SRBs, Queueing)
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*
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**********************************************************************/
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static struct dc390_dcb __inline__ *dc390_findDCB ( struct dc390_acb* pACB, u8 id, u8 lun)
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{
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struct dc390_dcb* pDCB = pACB->pLinkDCB; if (!pDCB) return NULL;
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while (pDCB->TargetID != id || pDCB->TargetLUN != lun)
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{
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pDCB = pDCB->pNextDCB;
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if (pDCB == pACB->pLinkDCB)
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return NULL;
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}
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DCBDEBUG1( printk (KERN_DEBUG "DCB %p (%02x,%02x) found.\n", \
|
|
pDCB, pDCB->TargetID, pDCB->TargetLUN));
|
|
return pDCB;
|
|
}
|
|
|
|
/* Insert SRB oin top of free list */
|
|
static __inline__ void dc390_Free_insert (struct dc390_acb* pACB, struct dc390_srb* pSRB)
|
|
{
|
|
DEBUG0(printk ("DC390: Free SRB %p\n", pSRB));
|
|
pSRB->pNextSRB = pACB->pFreeSRB;
|
|
pACB->pFreeSRB = pSRB;
|
|
}
|
|
|
|
static __inline__ void dc390_Going_append (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
|
|
{
|
|
pDCB->GoingSRBCnt++;
|
|
DEBUG0(printk("DC390: Append SRB %p to Going\n", pSRB));
|
|
/* Append to the list of Going commands */
|
|
if( pDCB->pGoingSRB )
|
|
pDCB->pGoingLast->pNextSRB = pSRB;
|
|
else
|
|
pDCB->pGoingSRB = pSRB;
|
|
|
|
pDCB->pGoingLast = pSRB;
|
|
/* No next one in sent list */
|
|
pSRB->pNextSRB = NULL;
|
|
}
|
|
|
|
static __inline__ void dc390_Going_remove (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
|
|
{
|
|
DEBUG0(printk("DC390: Remove SRB %p from Going\n", pSRB));
|
|
if (pSRB == pDCB->pGoingSRB)
|
|
pDCB->pGoingSRB = pSRB->pNextSRB;
|
|
else
|
|
{
|
|
struct dc390_srb* psrb = pDCB->pGoingSRB;
|
|
while (psrb && psrb->pNextSRB != pSRB)
|
|
psrb = psrb->pNextSRB;
|
|
if (!psrb)
|
|
{ printk (KERN_ERR "DC390: Remove non-ex. SRB %p from Going!\n", pSRB); return; }
|
|
psrb->pNextSRB = pSRB->pNextSRB;
|
|
if (pSRB == pDCB->pGoingLast)
|
|
pDCB->pGoingLast = psrb;
|
|
}
|
|
pDCB->GoingSRBCnt--;
|
|
}
|
|
|
|
static struct scatterlist* dc390_sg_build_single(struct scatterlist *sg, void *addr, unsigned int length)
|
|
{
|
|
memset(sg, 0, sizeof(struct scatterlist));
|
|
sg->page = virt_to_page(addr);
|
|
sg->length = length;
|
|
sg->offset = (unsigned long)addr & ~PAGE_MASK;
|
|
return sg;
|
|
}
|
|
|
|
/* Create pci mapping */
|
|
static int dc390_pci_map (struct dc390_srb* pSRB)
|
|
{
|
|
int error = 0;
|
|
struct scsi_cmnd *pcmd = pSRB->pcmd;
|
|
struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
|
|
dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp));
|
|
|
|
/* Map sense buffer */
|
|
if (pSRB->SRBFlag & AUTO_REQSENSE) {
|
|
pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->sense_buffer, sizeof(pcmd->sense_buffer));
|
|
pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1,
|
|
DMA_FROM_DEVICE);
|
|
cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList);
|
|
|
|
/* TODO: error handling */
|
|
if (pSRB->SGcount != 1)
|
|
error = 1;
|
|
DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __FUNCTION__, pcmd->sense_buffer, cmdp->saved_dma_handle));
|
|
/* Map SG list */
|
|
} else if (pcmd->use_sg) {
|
|
pSRB->pSegmentList = (struct scatterlist *) pcmd->request_buffer;
|
|
pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, pcmd->use_sg,
|
|
pcmd->sc_data_direction);
|
|
/* TODO: error handling */
|
|
if (!pSRB->SGcount)
|
|
error = 1;
|
|
DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\
|
|
__FUNCTION__, pcmd->request_buffer, pSRB->SGcount, pcmd->use_sg));
|
|
/* Map single segment */
|
|
} else if (pcmd->request_buffer && pcmd->request_bufflen) {
|
|
pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->request_buffer, pcmd->request_bufflen);
|
|
pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1,
|
|
pcmd->sc_data_direction);
|
|
cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList);
|
|
|
|
/* TODO: error handling */
|
|
if (pSRB->SGcount != 1)
|
|
error = 1;
|
|
DEBUG1(printk("%s(): Mapped request buffer %p at %x\n", __FUNCTION__, pcmd->request_buffer, cmdp->saved_dma_handle));
|
|
/* No mapping !? */
|
|
} else
|
|
pSRB->SGcount = 0;
|
|
|
|
return error;
|
|
}
|
|
|
|
/* Remove pci mapping */
|
|
static void dc390_pci_unmap (struct dc390_srb* pSRB)
|
|
{
|
|
struct scsi_cmnd *pcmd = pSRB->pcmd;
|
|
struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
|
|
DEBUG1(dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp)));
|
|
|
|
if (pSRB->SRBFlag) {
|
|
pci_unmap_sg(pdev, &pSRB->Segmentx, 1, DMA_FROM_DEVICE);
|
|
DEBUG1(printk("%s(): Unmapped sense buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
|
|
} else if (pcmd->use_sg) {
|
|
pci_unmap_sg(pdev, pcmd->request_buffer, pcmd->use_sg, pcmd->sc_data_direction);
|
|
DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n", __FUNCTION__, pcmd->request_buffer, pcmd->use_sg));
|
|
} else if (pcmd->request_buffer && pcmd->request_bufflen) {
|
|
pci_unmap_sg(pdev, &pSRB->Segmentx, 1, pcmd->sc_data_direction);
|
|
DEBUG1(printk("%s(): Unmapped request buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
|
|
}
|
|
}
|
|
|
|
static void __inline__
|
|
dc390_freetag (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
|
|
{
|
|
if (pSRB->TagNumber != SCSI_NO_TAG) {
|
|
pDCB->TagMask &= ~(1 << pSRB->TagNumber); /* free tag mask */
|
|
pSRB->TagNumber = SCSI_NO_TAG;
|
|
}
|
|
}
|
|
|
|
|
|
static int
|
|
dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
|
|
{
|
|
struct scsi_cmnd *scmd = pSRB->pcmd;
|
|
struct scsi_device *sdev = scmd->device;
|
|
u8 cmd, disc_allowed, try_sync_nego;
|
|
char tag[2];
|
|
|
|
pSRB->ScsiPhase = SCSI_NOP0;
|
|
|
|
if (pACB->Connected)
|
|
{
|
|
// Should not happen normally
|
|
printk (KERN_WARNING "DC390: Can't select when connected! (%08x,%02x)\n",
|
|
pSRB->SRBState, pSRB->SRBFlag);
|
|
pSRB->SRBState = SRB_READY;
|
|
pACB->SelConn++;
|
|
return 1;
|
|
}
|
|
if (time_before (jiffies, pACB->pScsiHost->last_reset))
|
|
{
|
|
DEBUG0(printk ("DC390: We were just reset and don't accept commands yet!\n"));
|
|
return 1;
|
|
}
|
|
/* KG: Moved pci mapping here */
|
|
dc390_pci_map(pSRB);
|
|
/* TODO: error handling */
|
|
DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
|
|
DC390_write8 (Sync_Period, pDCB->SyncPeriod);
|
|
DC390_write8 (Sync_Offset, pDCB->SyncOffset);
|
|
DC390_write8 (CtrlReg1, pDCB->CtrlR1);
|
|
DC390_write8 (CtrlReg3, pDCB->CtrlR3);
|
|
DC390_write8 (CtrlReg4, pDCB->CtrlR4);
|
|
DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); /* Flush FIFO */
|
|
DEBUG1(printk (KERN_INFO "DC390: Start SCSI command: %02x (Sync:%02x)\n",\
|
|
scmd->cmnd[0], pDCB->SyncMode));
|
|
|
|
/* Don't disconnect on AUTO_REQSENSE, cause it might be an
|
|
* Contingent Allegiance Condition (6.6), where no tags should be used.
|
|
* All other have to be allowed to disconnect to prevent Incorrect
|
|
* Initiator Connection (6.8.2/6.5.2) */
|
|
/* Changed KG, 99/06/06 */
|
|
if (! (pSRB->SRBFlag & AUTO_REQSENSE))
|
|
disc_allowed = pDCB->DevMode & EN_DISCONNECT_;
|
|
else
|
|
disc_allowed = 0;
|
|
|
|
if ((pDCB->SyncMode & SYNC_ENABLE) && pDCB->TargetLUN == 0 && sdev->sdtr &&
|
|
(((scmd->cmnd[0] == REQUEST_SENSE || (pSRB->SRBFlag & AUTO_REQSENSE)) &&
|
|
!(pDCB->SyncMode & SYNC_NEGO_DONE)) || scmd->cmnd[0] == INQUIRY))
|
|
try_sync_nego = 1;
|
|
else
|
|
try_sync_nego = 0;
|
|
|
|
pSRB->MsgCnt = 0;
|
|
cmd = SEL_W_ATN;
|
|
DC390_write8 (ScsiFifo, IDENTIFY(disc_allowed, pDCB->TargetLUN));
|
|
/* Change 99/05/31: Don't use tags when not disconnecting (BUSY) */
|
|
if ((pDCB->SyncMode & EN_TAG_QUEUEING) && disc_allowed && scsi_populate_tag_msg(scmd, tag)) {
|
|
DC390_write8(ScsiFifo, tag[0]);
|
|
pDCB->TagMask |= 1 << tag[1];
|
|
pSRB->TagNumber = tag[1];
|
|
DC390_write8(ScsiFifo, tag[1]);
|
|
DEBUG1(printk(KERN_INFO "DC390: Select w/DisCn for Cmd %li (SRB %p), block tag %02x\n", scmd->pid, pSRB, tag[1]));
|
|
cmd = SEL_W_ATN3;
|
|
} else {
|
|
/* No TagQ */
|
|
//no_tag:
|
|
DEBUG1(printk(KERN_INFO "DC390: Select w%s/DisCn for Cmd %li (SRB %p), No TagQ\n", disc_allowed ? "" : "o", scmd->pid, pSRB));
|
|
}
|
|
|
|
pSRB->SRBState = SRB_START_;
|
|
|
|
if (try_sync_nego)
|
|
{
|
|
u8 Sync_Off = pDCB->SyncOffset;
|
|
DEBUG0(printk (KERN_INFO "DC390: NEW Sync Nego code triggered (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN));
|
|
pSRB->MsgOutBuf[0] = EXTENDED_MESSAGE;
|
|
pSRB->MsgOutBuf[1] = 3;
|
|
pSRB->MsgOutBuf[2] = EXTENDED_SDTR;
|
|
pSRB->MsgOutBuf[3] = pDCB->NegoPeriod;
|
|
if (!(Sync_Off & 0x0f)) Sync_Off = SYNC_NEGO_OFFSET;
|
|
pSRB->MsgOutBuf[4] = Sync_Off;
|
|
pSRB->MsgCnt = 5;
|
|
//pSRB->SRBState = SRB_MSGOUT_;
|
|
pSRB->SRBState |= DO_SYNC_NEGO;
|
|
cmd = SEL_W_ATN_STOP;
|
|
}
|
|
|
|
/* Command is written in CommandPhase, if SEL_W_ATN_STOP ... */
|
|
if (cmd != SEL_W_ATN_STOP)
|
|
{
|
|
if( pSRB->SRBFlag & AUTO_REQSENSE )
|
|
{
|
|
DC390_write8 (ScsiFifo, REQUEST_SENSE);
|
|
DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
|
|
DC390_write8 (ScsiFifo, 0);
|
|
DC390_write8 (ScsiFifo, 0);
|
|
DC390_write8 (ScsiFifo, sizeof(scmd->sense_buffer));
|
|
DC390_write8 (ScsiFifo, 0);
|
|
DEBUG1(printk (KERN_DEBUG "DC390: AutoReqSense !\n"));
|
|
}
|
|
else /* write cmnd to bus */
|
|
{
|
|
u8 *ptr; u8 i;
|
|
ptr = (u8 *)scmd->cmnd;
|
|
for (i = 0; i < scmd->cmd_len; i++)
|
|
DC390_write8 (ScsiFifo, *(ptr++));
|
|
}
|
|
}
|
|
DEBUG0(if (pACB->pActiveDCB) \
|
|
printk (KERN_WARNING "DC390: ActiveDCB != 0\n"));
|
|
DEBUG0(if (pDCB->pActiveSRB) \
|
|
printk (KERN_WARNING "DC390: ActiveSRB != 0\n"));
|
|
//DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
|
|
if (DC390_read8 (Scsi_Status) & INTERRUPT)
|
|
{
|
|
dc390_freetag (pDCB, pSRB);
|
|
DEBUG0(printk ("DC390: Interrupt during Start SCSI (pid %li, target %02i-%02i)\n",
|
|
scmd->pid, scmd->device->id, scmd->device->lun));
|
|
pSRB->SRBState = SRB_READY;
|
|
//DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
|
|
pACB->SelLost++;
|
|
return 1;
|
|
}
|
|
DC390_write8 (ScsiCmd, cmd);
|
|
pACB->pActiveDCB = pDCB;
|
|
pDCB->pActiveSRB = pSRB;
|
|
pACB->Connected = 1;
|
|
pSRB->ScsiPhase = SCSI_NOP1;
|
|
return 0;
|
|
}
|
|
|
|
//#define DMA_INT EN_DMA_INT /*| EN_PAGE_INT*/
|
|
#define DMA_INT 0
|
|
|
|
#if DMA_INT
|
|
/* This is similar to AM53C974.c ... */
|
|
static u8
|
|
dc390_dma_intr (struct dc390_acb* pACB)
|
|
{
|
|
struct dc390_srb* pSRB;
|
|
u8 dstate;
|
|
DEBUG0(u16 pstate; struct pci_dev *pdev = pACB->pdev);
|
|
|
|
DEBUG0(pci_read_config_word(pdev, PCI_STATUS, &pstate));
|
|
DEBUG0(if (pstate & (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY))\
|
|
{ printk(KERN_WARNING "DC390: PCI state = %04x!\n", pstate); \
|
|
pci_write_config_word(pdev, PCI_STATUS, (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY));});
|
|
|
|
dstate = DC390_read8 (DMA_Status);
|
|
|
|
if (! pACB->pActiveDCB || ! pACB->pActiveDCB->pActiveSRB) return dstate;
|
|
else pSRB = pACB->pActiveDCB->pActiveSRB;
|
|
|
|
if (dstate & (DMA_XFER_ABORT | DMA_XFER_ERROR | POWER_DOWN | PCI_MS_ABORT))
|
|
{
|
|
printk (KERN_ERR "DC390: DMA error (%02x)!\n", dstate);
|
|
return dstate;
|
|
}
|
|
if (dstate & DMA_XFER_DONE)
|
|
{
|
|
u32 residual, xferCnt; int ctr = 6000000;
|
|
if (! (DC390_read8 (DMA_Cmd) & READ_DIRECTION))
|
|
{
|
|
do
|
|
{
|
|
DEBUG1(printk (KERN_DEBUG "DC390: read residual bytes ... \n"));
|
|
dstate = DC390_read8 (DMA_Status);
|
|
residual = DC390_read8 (CtcReg_Low) | DC390_read8 (CtcReg_Mid) << 8 |
|
|
DC390_read8 (CtcReg_High) << 16;
|
|
residual += DC390_read8 (Current_Fifo) & 0x1f;
|
|
} while (residual && ! (dstate & SCSI_INTERRUPT) && --ctr);
|
|
if (!ctr) printk (KERN_CRIT "DC390: dma_intr: DMA aborted unfinished: %06x bytes remain!!\n", DC390_read32 (DMA_Wk_ByteCntr));
|
|
/* residual = ... */
|
|
}
|
|
else
|
|
residual = 0;
|
|
|
|
/* ??? */
|
|
|
|
xferCnt = pSRB->SGToBeXferLen - residual;
|
|
pSRB->SGBusAddr += xferCnt;
|
|
pSRB->TotalXferredLen += xferCnt;
|
|
pSRB->SGToBeXferLen = residual;
|
|
# ifdef DC390_DEBUG0
|
|
printk (KERN_INFO "DC390: DMA: residual = %i, xfer = %i\n",
|
|
(unsigned int)residual, (unsigned int)xferCnt);
|
|
# endif
|
|
|
|
DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
|
|
}
|
|
dc390_laststatus &= ~0xff000000; dc390_laststatus |= dstate << 24;
|
|
return dstate;
|
|
}
|
|
#endif
|
|
|
|
|
|
static void __inline__
|
|
dc390_InvalidCmd(struct dc390_acb* pACB)
|
|
{
|
|
if (pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_ | SRB_MSGOUT))
|
|
DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
|
|
}
|
|
|
|
|
|
static irqreturn_t __inline__
|
|
DC390_Interrupt(void *dev_id)
|
|
{
|
|
struct dc390_acb *pACB = dev_id;
|
|
struct dc390_dcb *pDCB;
|
|
struct dc390_srb *pSRB;
|
|
u8 sstatus=0;
|
|
u8 phase;
|
|
void (*stateV)( struct dc390_acb*, struct dc390_srb*, u8 *);
|
|
u8 istate, istatus;
|
|
#if DMA_INT
|
|
u8 dstatus;
|
|
#endif
|
|
|
|
sstatus = DC390_read8 (Scsi_Status);
|
|
if( !(sstatus & INTERRUPT) )
|
|
return IRQ_NONE;
|
|
|
|
DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus));
|
|
|
|
#if DMA_INT
|
|
spin_lock_irq(pACB->pScsiHost->host_lock);
|
|
dstatus = dc390_dma_intr (pACB);
|
|
spin_unlock_irq(pACB->pScsiHost->host_lock);
|
|
|
|
DEBUG1(printk (KERN_DEBUG "dstatus=%02x,", dstatus));
|
|
if (! (dstatus & SCSI_INTERRUPT))
|
|
{
|
|
DEBUG0(printk (KERN_WARNING "DC390 Int w/o SCSI actions (only DMA?)\n"));
|
|
return IRQ_NONE;
|
|
}
|
|
#else
|
|
//DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
|
|
//dstatus = DC390_read8 (DMA_Status);
|
|
//DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
|
|
#endif
|
|
|
|
spin_lock_irq(pACB->pScsiHost->host_lock);
|
|
|
|
istate = DC390_read8 (Intern_State);
|
|
istatus = DC390_read8 (INT_Status); /* This clears Scsi_Status, Intern_State and INT_Status ! */
|
|
|
|
DEBUG1(printk (KERN_INFO "Istatus(Res,Inv,Dis,Serv,Succ,ReS,SelA,Sel)=%02x,",istatus));
|
|
dc390_laststatus &= ~0x00ffffff;
|
|
dc390_laststatus |= /* dstatus<<24 | */ sstatus<<16 | istate<<8 | istatus;
|
|
|
|
if (sstatus & ILLEGAL_OP_ERR)
|
|
{
|
|
printk ("DC390: Illegal Operation detected (%08x)!\n", dc390_laststatus);
|
|
dc390_dumpinfo (pACB, pACB->pActiveDCB, pACB->pActiveDCB->pActiveSRB);
|
|
}
|
|
|
|
else if (istatus & INVALID_CMD)
|
|
{
|
|
printk ("DC390: Invalid Command detected (%08x)!\n", dc390_laststatus);
|
|
dc390_InvalidCmd( pACB );
|
|
goto unlock;
|
|
}
|
|
|
|
if (istatus & SCSI_RESET)
|
|
{
|
|
dc390_ScsiRstDetect( pACB );
|
|
goto unlock;
|
|
}
|
|
|
|
if (istatus & DISCONNECTED)
|
|
{
|
|
dc390_Disconnect( pACB );
|
|
goto unlock;
|
|
}
|
|
|
|
if (istatus & RESELECTED)
|
|
{
|
|
dc390_Reselect( pACB );
|
|
goto unlock;
|
|
}
|
|
|
|
else if (istatus & (SELECTED | SEL_ATTENTION))
|
|
{
|
|
printk (KERN_ERR "DC390: Target mode not supported!\n");
|
|
goto unlock;
|
|
}
|
|
|
|
if (istatus & (SUCCESSFUL_OP|SERVICE_REQUEST) )
|
|
{
|
|
pDCB = pACB->pActiveDCB;
|
|
if (!pDCB)
|
|
{
|
|
printk (KERN_ERR "DC390: Suc. op/ Serv. req: pActiveDCB = 0!\n");
|
|
goto unlock;
|
|
}
|
|
pSRB = pDCB->pActiveSRB;
|
|
if( pDCB->DCBFlag & ABORT_DEV_ )
|
|
dc390_EnableMsgOut_Abort (pACB, pSRB);
|
|
|
|
phase = pSRB->ScsiPhase;
|
|
DEBUG1(printk (KERN_INFO "DC390: [%i]%s(0) (%02x)\n", phase, dc390_p0_str[phase], sstatus));
|
|
stateV = (void *) dc390_phase0[phase];
|
|
( *stateV )( pACB, pSRB, &sstatus );
|
|
|
|
pSRB->ScsiPhase = sstatus & 7;
|
|
phase = (u8) sstatus & 7;
|
|
DEBUG1(printk (KERN_INFO "DC390: [%i]%s(1) (%02x)\n", phase, dc390_p1_str[phase], sstatus));
|
|
stateV = (void *) dc390_phase1[phase];
|
|
( *stateV )( pACB, pSRB, &sstatus );
|
|
}
|
|
|
|
unlock:
|
|
spin_unlock_irq(pACB->pScsiHost->host_lock);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static irqreturn_t do_DC390_Interrupt(int irq, void *dev_id)
|
|
{
|
|
irqreturn_t ret;
|
|
DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq));
|
|
/* Locking is done in DC390_Interrupt */
|
|
ret = DC390_Interrupt(dev_id);
|
|
DEBUG1(printk (".. IRQ returned\n"));
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
|
|
{
|
|
u8 sstatus;
|
|
struct scatterlist *psgl;
|
|
u32 ResidCnt, xferCnt;
|
|
u8 dstate = 0;
|
|
|
|
sstatus = *psstatus;
|
|
|
|
if( !(pSRB->SRBState & SRB_XFERPAD) )
|
|
{
|
|
if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR) )
|
|
pSRB->SRBStatus |= PARITY_ERROR;
|
|
|
|
if( sstatus & COUNT_2_ZERO )
|
|
{
|
|
unsigned long timeout = jiffies + HZ;
|
|
|
|
/* Function called from the ISR with the host_lock held and interrupts disabled */
|
|
if (pSRB->SGToBeXferLen)
|
|
while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
|
|
spin_unlock_irq(pACB->pScsiHost->host_lock);
|
|
udelay(50);
|
|
spin_lock_irq(pACB->pScsiHost->host_lock);
|
|
}
|
|
if (!time_before(jiffies, timeout))
|
|
printk (KERN_CRIT "DC390: Deadlock in DataOut_0: DMA aborted unfinished: %06x bytes remain!!\n",
|
|
DC390_read32 (DMA_Wk_ByteCntr));
|
|
dc390_laststatus &= ~0xff000000;
|
|
dc390_laststatus |= dstate << 24;
|
|
pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
|
|
pSRB->SGIndex++;
|
|
if( pSRB->SGIndex < pSRB->SGcount )
|
|
{
|
|
pSRB->pSegmentList++;
|
|
psgl = pSRB->pSegmentList;
|
|
|
|
pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
|
|
pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
|
|
}
|
|
else
|
|
pSRB->SGToBeXferLen = 0;
|
|
}
|
|
else
|
|
{
|
|
ResidCnt = (u32) DC390_read8 (Current_Fifo) & 0x1f;
|
|
ResidCnt |= (u32) DC390_read8 (CtcReg_High) << 16;
|
|
ResidCnt |= (u32) DC390_read8 (CtcReg_Mid) << 8;
|
|
ResidCnt += (u32) DC390_read8 (CtcReg_Low);
|
|
|
|
xferCnt = pSRB->SGToBeXferLen - ResidCnt;
|
|
pSRB->SGBusAddr += xferCnt;
|
|
pSRB->TotalXferredLen += xferCnt;
|
|
pSRB->SGToBeXferLen = ResidCnt;
|
|
}
|
|
}
|
|
if ((*psstatus & 7) != SCSI_DATA_OUT)
|
|
{
|
|
DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
|
|
DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
|
|
}
|
|
}
|
|
|
|
static void
|
|
dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
|
|
{
|
|
u8 sstatus, residual, bval;
|
|
struct scatterlist *psgl;
|
|
u32 ResidCnt, i;
|
|
unsigned long xferCnt;
|
|
u8 *ptr;
|
|
|
|
sstatus = *psstatus;
|
|
|
|
if( !(pSRB->SRBState & SRB_XFERPAD) )
|
|
{
|
|
if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR))
|
|
pSRB->SRBStatus |= PARITY_ERROR;
|
|
|
|
if( sstatus & COUNT_2_ZERO )
|
|
{
|
|
int dstate = 0;
|
|
unsigned long timeout = jiffies + HZ;
|
|
|
|
/* Function called from the ISR with the host_lock held and interrupts disabled */
|
|
if (pSRB->SGToBeXferLen)
|
|
while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
|
|
spin_unlock_irq(pACB->pScsiHost->host_lock);
|
|
udelay(50);
|
|
spin_lock_irq(pACB->pScsiHost->host_lock);
|
|
}
|
|
if (!time_before(jiffies, timeout)) {
|
|
printk (KERN_CRIT "DC390: Deadlock in DataIn_0: DMA aborted unfinished: %06x bytes remain!!\n",
|
|
DC390_read32 (DMA_Wk_ByteCntr));
|
|
printk (KERN_CRIT "DC390: DataIn_0: DMA State: %i\n", dstate);
|
|
}
|
|
dc390_laststatus &= ~0xff000000;
|
|
dc390_laststatus |= dstate << 24;
|
|
DEBUG1(ResidCnt = ((unsigned long) DC390_read8 (CtcReg_High) << 16) \
|
|
+ ((unsigned long) DC390_read8 (CtcReg_Mid) << 8) \
|
|
+ ((unsigned long) DC390_read8 (CtcReg_Low)));
|
|
DEBUG1(printk (KERN_DEBUG "Count_2_Zero (ResidCnt=%i,ToBeXfer=%li),", ResidCnt, pSRB->SGToBeXferLen));
|
|
|
|
DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
|
|
|
|
pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
|
|
pSRB->SGIndex++;
|
|
if( pSRB->SGIndex < pSRB->SGcount )
|
|
{
|
|
pSRB->pSegmentList++;
|
|
psgl = pSRB->pSegmentList;
|
|
|
|
pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
|
|
pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
|
|
}
|
|
else
|
|
pSRB->SGToBeXferLen = 0;
|
|
}
|
|
else /* phase changed */
|
|
{
|
|
residual = 0;
|
|
bval = DC390_read8 (Current_Fifo);
|
|
while( bval & 0x1f )
|
|
{
|
|
DEBUG1(printk (KERN_DEBUG "Check for residuals,"));
|
|
if( (bval & 0x1f) == 1 )
|
|
{
|
|
for(i=0; i < 0x100; i++)
|
|
{
|
|
bval = DC390_read8 (Current_Fifo);
|
|
if( !(bval & 0x1f) )
|
|
goto din_1;
|
|
else if( i == 0x0ff )
|
|
{
|
|
residual = 1; /* ;1 residual byte */
|
|
goto din_1;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
bval = DC390_read8 (Current_Fifo);
|
|
}
|
|
din_1:
|
|
DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_BLAST_CMD);
|
|
for (i = 0xa000; i; i--)
|
|
{
|
|
bval = DC390_read8 (DMA_Status);
|
|
if (bval & BLAST_COMPLETE)
|
|
break;
|
|
}
|
|
/* It seems a DMA Blast abort isn't that bad ... */
|
|
if (!i) printk (KERN_ERR "DC390: DMA Blast aborted unfinished!\n");
|
|
//DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
|
|
dc390_laststatus &= ~0xff000000; dc390_laststatus |= bval << 24;
|
|
|
|
DEBUG1(printk (KERN_DEBUG "Blast: Read %i times DMA_Status %02x", 0xa000-i, bval));
|
|
ResidCnt = (u32) DC390_read8 (CtcReg_High);
|
|
ResidCnt <<= 8;
|
|
ResidCnt |= (u32) DC390_read8 (CtcReg_Mid);
|
|
ResidCnt <<= 8;
|
|
ResidCnt |= (u32) DC390_read8 (CtcReg_Low);
|
|
|
|
xferCnt = pSRB->SGToBeXferLen - ResidCnt;
|
|
pSRB->SGBusAddr += xferCnt;
|
|
pSRB->TotalXferredLen += xferCnt;
|
|
pSRB->SGToBeXferLen = ResidCnt;
|
|
|
|
if( residual )
|
|
{
|
|
static int feedback_requested;
|
|
bval = DC390_read8 (ScsiFifo); /* get one residual byte */
|
|
|
|
if (!feedback_requested) {
|
|
feedback_requested = 1;
|
|
printk(KERN_WARNING "%s: Please, contact <linux-scsi@vger.kernel.org> "
|
|
"to help improve support for your system.\n", __FILE__);
|
|
}
|
|
|
|
ptr = (u8 *) bus_to_virt( pSRB->SGBusAddr );
|
|
*ptr = bval;
|
|
pSRB->SGBusAddr++; xferCnt++;
|
|
pSRB->TotalXferredLen++;
|
|
pSRB->SGToBeXferLen--;
|
|
}
|
|
DEBUG1(printk (KERN_DEBUG "Xfered: %li, Total: %li, Remaining: %li\n", xferCnt,\
|
|
pSRB->TotalXferredLen, pSRB->SGToBeXferLen));
|
|
|
|
}
|
|
}
|
|
if ((*psstatus & 7) != SCSI_DATA_IN)
|
|
{
|
|
DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
|
|
DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
|
|
}
|
|
}
|
|
|
|
static void
|
|
dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
|
|
{
|
|
}
|
|
|
|
static void
|
|
dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
|
|
{
|
|
|
|
pSRB->TargetStatus = DC390_read8 (ScsiFifo);
|
|
//udelay (1);
|
|
pSRB->EndMessage = DC390_read8 (ScsiFifo); /* get message */
|
|
|
|
*psstatus = SCSI_NOP0;
|
|
pSRB->SRBState = SRB_COMPLETED;
|
|
DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
|
|
}
|
|
|
|
static void
|
|
dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
|
|
{
|
|
if( pSRB->SRBState & (SRB_UNEXPECT_RESEL+SRB_ABORT_SENT) )
|
|
*psstatus = SCSI_NOP0;
|
|
//DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
|
|
}
|
|
|
|
|
|
static void __inline__
|
|
dc390_reprog (struct dc390_acb* pACB, struct dc390_dcb* pDCB)
|
|
{
|
|
DC390_write8 (Sync_Period, pDCB->SyncPeriod);
|
|
DC390_write8 (Sync_Offset, pDCB->SyncOffset);
|
|
DC390_write8 (CtrlReg3, pDCB->CtrlR3);
|
|
DC390_write8 (CtrlReg4, pDCB->CtrlR4);
|
|
dc390_SetXferRate (pACB, pDCB);
|
|
}
|
|
|
|
|
|
#ifdef DC390_DEBUG0
|
|
static void
|
|
dc390_printMsg (u8 *MsgBuf, u8 len)
|
|
{
|
|
int i;
|
|
printk (" %02x", MsgBuf[0]);
|
|
for (i = 1; i < len; i++)
|
|
printk (" %02x", MsgBuf[i]);
|
|
printk ("\n");
|
|
}
|
|
#endif
|
|
|
|
#define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD)
|
|
|
|
/* reject_msg */
|
|
static void __inline__
|
|
dc390_MsgIn_reject (struct dc390_acb* pACB, struct dc390_srb* pSRB)
|
|
{
|
|
pSRB->MsgOutBuf[0] = MESSAGE_REJECT;
|
|
pSRB->MsgCnt = 1;
|
|
DC390_ENABLE_MSGOUT;
|
|
DEBUG0 (printk (KERN_INFO "DC390: Reject message\n"));
|
|
}
|
|
|
|
/* abort command */
|
|
static void
|
|
dc390_EnableMsgOut_Abort ( struct dc390_acb* pACB, struct dc390_srb* pSRB )
|
|
{
|
|
pSRB->MsgOutBuf[0] = ABORT;
|
|
pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
|
|
pSRB->pSRBDCB->DCBFlag &= ~ABORT_DEV_;
|
|
}
|
|
|
|
static struct dc390_srb*
|
|
dc390_MsgIn_QTag (struct dc390_acb* pACB, struct dc390_dcb* pDCB, s8 tag)
|
|
{
|
|
struct dc390_srb* pSRB = pDCB->pGoingSRB;
|
|
|
|
if (pSRB)
|
|
{
|
|
struct scsi_cmnd *scmd = scsi_find_tag(pSRB->pcmd->device, tag);
|
|
pSRB = (struct dc390_srb *)scmd->host_scribble;
|
|
|
|
if (pDCB->DCBFlag & ABORT_DEV_)
|
|
{
|
|
pSRB->SRBState = SRB_ABORT_SENT;
|
|
dc390_EnableMsgOut_Abort( pACB, pSRB );
|
|
}
|
|
|
|
if (!(pSRB->SRBState & SRB_DISCONNECT))
|
|
goto mingx0;
|
|
|
|
pDCB->pActiveSRB = pSRB;
|
|
pSRB->SRBState = SRB_DATA_XFER;
|
|
}
|
|
else
|
|
{
|
|
mingx0:
|
|
pSRB = pACB->pTmpSRB;
|
|
pSRB->SRBState = SRB_UNEXPECT_RESEL;
|
|
pDCB->pActiveSRB = pSRB;
|
|
pSRB->MsgOutBuf[0] = ABORT_TAG;
|
|
pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
|
|
}
|
|
return pSRB;
|
|
}
|
|
|
|
|
|
/* set async transfer mode */
|
|
static void
|
|
dc390_MsgIn_set_async (struct dc390_acb* pACB, struct dc390_srb* pSRB)
|
|
{
|
|
struct dc390_dcb* pDCB = pSRB->pSRBDCB;
|
|
if (!(pSRB->SRBState & DO_SYNC_NEGO))
|
|
printk (KERN_INFO "DC390: Target %i initiates Non-Sync?\n", pDCB->TargetID);
|
|
pSRB->SRBState &= ~DO_SYNC_NEGO;
|
|
pDCB->SyncMode &= ~(SYNC_ENABLE+SYNC_NEGO_DONE);
|
|
pDCB->SyncPeriod = 0;
|
|
pDCB->SyncOffset = 0;
|
|
//pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
|
|
pDCB->CtrlR3 = FAST_CLK; /* fast clock / normal scsi */
|
|
pDCB->CtrlR4 &= 0x3f;
|
|
pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
|
|
dc390_reprog (pACB, pDCB);
|
|
}
|
|
|
|
/* set sync transfer mode */
|
|
static void
|
|
dc390_MsgIn_set_sync (struct dc390_acb* pACB, struct dc390_srb* pSRB)
|
|
{
|
|
u8 bval;
|
|
u16 wval, wval1;
|
|
struct dc390_dcb* pDCB = pSRB->pSRBDCB;
|
|
u8 oldsyncperiod = pDCB->SyncPeriod;
|
|
u8 oldsyncoffset = pDCB->SyncOffset;
|
|
|
|
if (!(pSRB->SRBState & DO_SYNC_NEGO))
|
|
{
|
|
printk (KERN_INFO "DC390: Target %i initiates Sync: %ins %i ... answer ...\n",
|
|
pDCB->TargetID, pSRB->MsgInBuf[3]<<2, pSRB->MsgInBuf[4]);
|
|
|
|
/* reject */
|
|
//dc390_MsgIn_reject (pACB, pSRB);
|
|
//return dc390_MsgIn_set_async (pACB, pSRB);
|
|
|
|
/* Reply with corrected SDTR Message */
|
|
if (pSRB->MsgInBuf[4] > 15)
|
|
{
|
|
printk (KERN_INFO "DC390: Lower Sync Offset to 15\n");
|
|
pSRB->MsgInBuf[4] = 15;
|
|
}
|
|
if (pSRB->MsgInBuf[3] < pDCB->NegoPeriod)
|
|
{
|
|
printk (KERN_INFO "DC390: Set sync nego period to %ins\n", pDCB->NegoPeriod << 2);
|
|
pSRB->MsgInBuf[3] = pDCB->NegoPeriod;
|
|
}
|
|
memcpy (pSRB->MsgOutBuf, pSRB->MsgInBuf, 5);
|
|
pSRB->MsgCnt = 5;
|
|
DC390_ENABLE_MSGOUT;
|
|
}
|
|
|
|
pSRB->SRBState &= ~DO_SYNC_NEGO;
|
|
pDCB->SyncMode |= SYNC_ENABLE+SYNC_NEGO_DONE;
|
|
pDCB->SyncOffset &= 0x0f0;
|
|
pDCB->SyncOffset |= pSRB->MsgInBuf[4];
|
|
pDCB->NegoPeriod = pSRB->MsgInBuf[3];
|
|
|
|
wval = (u16) pSRB->MsgInBuf[3];
|
|
wval = wval << 2; wval -= 3; wval1 = wval / 25; /* compute speed */
|
|
if( (wval1 * 25) != wval) wval1++;
|
|
bval = FAST_CLK+FAST_SCSI; /* fast clock / fast scsi */
|
|
|
|
pDCB->CtrlR4 &= 0x3f; /* Glitch eater: 12ns less than normal */
|
|
if (pACB->glitch_cfg != NS_TO_GLITCH(0))
|
|
pDCB->CtrlR4 |= NS_TO_GLITCH(((GLITCH_TO_NS(pACB->glitch_cfg)) - 1));
|
|
else
|
|
pDCB->CtrlR4 |= NS_TO_GLITCH(0);
|
|
if (wval1 < 4) pDCB->CtrlR4 |= NS_TO_GLITCH(0); /* Ultra */
|
|
|
|
if (wval1 >= 8)
|
|
{
|
|
wval1--; /* Timing computation differs by 1 from FAST_SCSI */
|
|
bval = FAST_CLK; /* fast clock / normal scsi */
|
|
pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
|
|
}
|
|
|
|
pDCB->CtrlR3 = bval;
|
|
pDCB->SyncPeriod = (u8)wval1;
|
|
|
|
if ((oldsyncperiod != wval1 || oldsyncoffset != pDCB->SyncOffset) && pDCB->TargetLUN == 0)
|
|
{
|
|
if (! (bval & FAST_SCSI)) wval1++;
|
|
printk (KERN_INFO "DC390: Target %i: Sync transfer %i.%1i MHz, Offset %i\n", pDCB->TargetID,
|
|
40/wval1, ((40%wval1)*10+wval1/2)/wval1, pDCB->SyncOffset & 0x0f);
|
|
}
|
|
|
|
dc390_reprog (pACB, pDCB);
|
|
}
|
|
|
|
|
|
/* handle RESTORE_PTR */
|
|
/* I presume, this command is already mapped, so, have to remap. */
|
|
static void
|
|
dc390_restore_ptr (struct dc390_acb* pACB, struct dc390_srb* pSRB)
|
|
{
|
|
struct scsi_cmnd *pcmd = pSRB->pcmd;
|
|
struct scatterlist *psgl;
|
|
pSRB->TotalXferredLen = 0;
|
|
pSRB->SGIndex = 0;
|
|
if (pcmd->use_sg) {
|
|
pSRB->pSegmentList = (struct scatterlist *)pcmd->request_buffer;
|
|
psgl = pSRB->pSegmentList;
|
|
//dc390_pci_sync(pSRB);
|
|
|
|
while (pSRB->TotalXferredLen + (unsigned long) sg_dma_len(psgl) < pSRB->Saved_Ptr)
|
|
{
|
|
pSRB->TotalXferredLen += (unsigned long) sg_dma_len(psgl);
|
|
pSRB->SGIndex++;
|
|
if( pSRB->SGIndex < pSRB->SGcount )
|
|
{
|
|
pSRB->pSegmentList++;
|
|
psgl = pSRB->pSegmentList;
|
|
pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
|
|
pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
|
|
}
|
|
else
|
|
pSRB->SGToBeXferLen = 0;
|
|
}
|
|
pSRB->SGToBeXferLen -= (pSRB->Saved_Ptr - pSRB->TotalXferredLen);
|
|
pSRB->SGBusAddr += (pSRB->Saved_Ptr - pSRB->TotalXferredLen);
|
|
printk (KERN_INFO "DC390: Pointer restored. Segment %i, Total %li, Bus %08lx\n",
|
|
pSRB->SGIndex, pSRB->Saved_Ptr, pSRB->SGBusAddr);
|
|
|
|
} else if(pcmd->request_buffer) {
|
|
//dc390_pci_sync(pSRB);
|
|
|
|
sg_dma_len(&pSRB->Segmentx) = pcmd->request_bufflen - pSRB->Saved_Ptr;
|
|
pSRB->SGcount = 1;
|
|
pSRB->pSegmentList = (struct scatterlist *) &pSRB->Segmentx;
|
|
} else {
|
|
pSRB->SGcount = 0;
|
|
printk (KERN_INFO "DC390: RESTORE_PTR message for Transfer without Scatter-Gather ??\n");
|
|
}
|
|
|
|
pSRB->TotalXferredLen = pSRB->Saved_Ptr;
|
|
}
|
|
|
|
|
|
/* According to the docs, the AM53C974 reads the message and
|
|
* generates a Successful Operation IRQ before asserting ACK for
|
|
* the last byte (how does it know whether it's the last ?) */
|
|
/* The old code handled it in another way, indicating, that on
|
|
* every message byte an IRQ is generated and every byte has to
|
|
* be manually ACKed. Hmmm ? (KG, 98/11/28) */
|
|
/* The old implementation was correct. Sigh! */
|
|
|
|
/* Check if the message is complete */
|
|
static u8 __inline__
|
|
dc390_MsgIn_complete (u8 *msgbuf, u32 len)
|
|
{
|
|
if (*msgbuf == EXTENDED_MESSAGE)
|
|
{
|
|
if (len < 2) return 0;
|
|
if (len < msgbuf[1] + 2) return 0;
|
|
}
|
|
else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) // two byte messages
|
|
if (len < 2) return 0;
|
|
return 1;
|
|
}
|
|
|
|
|
|
|
|
/* read and eval received messages */
|
|
static void
|
|
dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
|
|
{
|
|
struct dc390_dcb* pDCB = pACB->pActiveDCB;
|
|
|
|
/* Read the msg */
|
|
|
|
pSRB->MsgInBuf[pACB->MsgLen++] = DC390_read8 (ScsiFifo);
|
|
//pSRB->SRBState = 0;
|
|
|
|
/* Msg complete ? */
|
|
if (dc390_MsgIn_complete (pSRB->MsgInBuf, pACB->MsgLen))
|
|
{
|
|
DEBUG0 (printk (KERN_INFO "DC390: MsgIn:"); dc390_printMsg (pSRB->MsgInBuf, pACB->MsgLen));
|
|
/* Now eval the msg */
|
|
switch (pSRB->MsgInBuf[0])
|
|
{
|
|
case DISCONNECT:
|
|
pSRB->SRBState = SRB_DISCONNECT; break;
|
|
|
|
case SIMPLE_QUEUE_TAG:
|
|
case HEAD_OF_QUEUE_TAG:
|
|
case ORDERED_QUEUE_TAG:
|
|
pSRB = dc390_MsgIn_QTag (pACB, pDCB, pSRB->MsgInBuf[1]);
|
|
break;
|
|
|
|
case MESSAGE_REJECT:
|
|
DC390_write8 (ScsiCmd, RESET_ATN_CMD);
|
|
pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
|
|
if( pSRB->SRBState & DO_SYNC_NEGO)
|
|
dc390_MsgIn_set_async (pACB, pSRB);
|
|
break;
|
|
|
|
case EXTENDED_MESSAGE:
|
|
/* reject every extended msg but SDTR */
|
|
if (pSRB->MsgInBuf[1] != 3 || pSRB->MsgInBuf[2] != EXTENDED_SDTR)
|
|
dc390_MsgIn_reject (pACB, pSRB);
|
|
else
|
|
{
|
|
if (pSRB->MsgInBuf[3] == 0 || pSRB->MsgInBuf[4] == 0)
|
|
dc390_MsgIn_set_async (pACB, pSRB);
|
|
else
|
|
dc390_MsgIn_set_sync (pACB, pSRB);
|
|
}
|
|
|
|
// nothing has to be done
|
|
case COMMAND_COMPLETE: break;
|
|
|
|
// SAVE POINTER may be ignored as we have the struct dc390_srb* associated with the
|
|
// scsi command. Thanks, Gerard, for pointing it out.
|
|
case SAVE_POINTERS:
|
|
pSRB->Saved_Ptr = pSRB->TotalXferredLen;
|
|
break;
|
|
// The device might want to restart transfer with a RESTORE
|
|
case RESTORE_POINTERS:
|
|
DEBUG0(printk ("DC390: RESTORE POINTER message received ... try to handle\n"));
|
|
dc390_restore_ptr (pACB, pSRB);
|
|
break;
|
|
|
|
// reject unknown messages
|
|
default: dc390_MsgIn_reject (pACB, pSRB);
|
|
}
|
|
|
|
/* Clear counter and MsgIn state */
|
|
pSRB->SRBState &= ~SRB_MSGIN;
|
|
pACB->MsgLen = 0;
|
|
}
|
|
|
|
*psstatus = SCSI_NOP0;
|
|
DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
|
|
//DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
|
|
}
|
|
|
|
|
|
static void
|
|
dc390_DataIO_Comm( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 ioDir)
|
|
{
|
|
struct scatterlist *psgl;
|
|
unsigned long lval;
|
|
struct dc390_dcb* pDCB = pACB->pActiveDCB;
|
|
|
|
if (pSRB == pACB->pTmpSRB)
|
|
{
|
|
if (pDCB)
|
|
printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (%02i-%i)\n", pDCB->TargetID, pDCB->TargetLUN);
|
|
else
|
|
printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (DCB 0!)\n");
|
|
|
|
/* Try to recover - some broken disks react badly to tagged INQUIRY */
|
|
if (pDCB && pACB->scan_devices && pDCB->GoingSRBCnt == 1) {
|
|
pSRB = pDCB->pGoingSRB;
|
|
pDCB->pActiveSRB = pSRB;
|
|
} else {
|
|
pSRB->pSRBDCB = pDCB;
|
|
dc390_EnableMsgOut_Abort(pACB, pSRB);
|
|
if (pDCB)
|
|
pDCB->DCBFlag |= ABORT_DEV;
|
|
return;
|
|
}
|
|
}
|
|
|
|
if( pSRB->SGIndex < pSRB->SGcount )
|
|
{
|
|
DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir /* | DMA_INT */);
|
|
if( !pSRB->SGToBeXferLen )
|
|
{
|
|
psgl = pSRB->pSegmentList;
|
|
pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
|
|
pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
|
|
DEBUG1(printk (KERN_DEBUG " DC390: Next SG segment."));
|
|
}
|
|
lval = pSRB->SGToBeXferLen;
|
|
DEBUG1(printk (KERN_DEBUG " DC390: Start transfer: %li bytes (address %08lx)\n", lval, pSRB->SGBusAddr));
|
|
DC390_write8 (CtcReg_Low, (u8) lval);
|
|
lval >>= 8;
|
|
DC390_write8 (CtcReg_Mid, (u8) lval);
|
|
lval >>= 8;
|
|
DC390_write8 (CtcReg_High, (u8) lval);
|
|
|
|
DC390_write32 (DMA_XferCnt, pSRB->SGToBeXferLen);
|
|
DC390_write32 (DMA_XferAddr, pSRB->SGBusAddr);
|
|
|
|
//DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); /* | DMA_INT; */
|
|
pSRB->SRBState = SRB_DATA_XFER;
|
|
|
|
DC390_write8 (ScsiCmd, DMA_COMMAND+INFO_XFER_CMD);
|
|
|
|
DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT);
|
|
//DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT));
|
|
//DEBUG1(printk (KERN_DEBUG "DC390: DMA_Status: %02x\n", DC390_read8 (DMA_Status)));
|
|
//DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT));
|
|
}
|
|
else /* xfer pad */
|
|
{
|
|
if( pSRB->SGcount )
|
|
{
|
|
pSRB->AdaptStatus = H_OVER_UNDER_RUN;
|
|
pSRB->SRBStatus |= OVER_RUN;
|
|
DEBUG0(printk (KERN_WARNING " DC390: Overrun -"));
|
|
}
|
|
DEBUG0(printk (KERN_WARNING " Clear transfer pad \n"));
|
|
DC390_write8 (CtcReg_Low, 0);
|
|
DC390_write8 (CtcReg_Mid, 0);
|
|
DC390_write8 (CtcReg_High, 0);
|
|
|
|
pSRB->SRBState |= SRB_XFERPAD;
|
|
DC390_write8 (ScsiCmd, DMA_COMMAND+XFER_PAD_BYTE);
|
|
/*
|
|
DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); // | DMA_INT;
|
|
DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT);
|
|
*/
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
|
|
{
|
|
dc390_DataIO_Comm (pACB, pSRB, WRITE_DIRECTION);
|
|
}
|
|
|
|
static void
|
|
dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
|
|
{
|
|
dc390_DataIO_Comm (pACB, pSRB, READ_DIRECTION);
|
|
}
|
|
|
|
static void
|
|
dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
|
|
{
|
|
struct dc390_dcb* pDCB;
|
|
u8 i, cnt;
|
|
u8 *ptr;
|
|
|
|
DC390_write8 (ScsiCmd, RESET_ATN_CMD);
|
|
DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
|
|
if( !(pSRB->SRBFlag & AUTO_REQSENSE) )
|
|
{
|
|
cnt = (u8) pSRB->pcmd->cmd_len;
|
|
ptr = (u8 *) pSRB->pcmd->cmnd;
|
|
for(i=0; i < cnt; i++)
|
|
DC390_write8 (ScsiFifo, *(ptr++));
|
|
}
|
|
else
|
|
{
|
|
DC390_write8 (ScsiFifo, REQUEST_SENSE);
|
|
pDCB = pACB->pActiveDCB;
|
|
DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
|
|
DC390_write8 (ScsiFifo, 0);
|
|
DC390_write8 (ScsiFifo, 0);
|
|
DC390_write8 (ScsiFifo, sizeof(pSRB->pcmd->sense_buffer));
|
|
DC390_write8 (ScsiFifo, 0);
|
|
DEBUG0(printk(KERN_DEBUG "DC390: AutoReqSense (CmndPhase)!\n"));
|
|
}
|
|
pSRB->SRBState = SRB_COMMAND;
|
|
DC390_write8 (ScsiCmd, INFO_XFER_CMD);
|
|
}
|
|
|
|
static void
|
|
dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
|
|
{
|
|
DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
|
|
pSRB->SRBState = SRB_STATUS;
|
|
DC390_write8 (ScsiCmd, INITIATOR_CMD_CMPLTE);
|
|
//DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
|
|
}
|
|
|
|
static void
|
|
dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
|
|
{
|
|
u8 bval, i, cnt;
|
|
u8 *ptr;
|
|
struct dc390_dcb* pDCB;
|
|
|
|
DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
|
|
pDCB = pACB->pActiveDCB;
|
|
if( !(pSRB->SRBState & SRB_MSGOUT) )
|
|
{
|
|
cnt = pSRB->MsgCnt;
|
|
if( cnt )
|
|
{
|
|
ptr = (u8 *) pSRB->MsgOutBuf;
|
|
for(i=0; i < cnt; i++)
|
|
DC390_write8 (ScsiFifo, *(ptr++));
|
|
pSRB->MsgCnt = 0;
|
|
if( (pDCB->DCBFlag & ABORT_DEV_) &&
|
|
(pSRB->MsgOutBuf[0] == ABORT) )
|
|
pSRB->SRBState = SRB_ABORT_SENT;
|
|
}
|
|
else
|
|
{
|
|
bval = ABORT; /* ??? MSG_NOP */
|
|
if( (pSRB->pcmd->cmnd[0] == INQUIRY ) ||
|
|
(pSRB->pcmd->cmnd[0] == REQUEST_SENSE) ||
|
|
(pSRB->SRBFlag & AUTO_REQSENSE) )
|
|
{
|
|
if( pDCB->SyncMode & SYNC_ENABLE )
|
|
goto mop1;
|
|
}
|
|
DC390_write8 (ScsiFifo, bval);
|
|
}
|
|
DC390_write8 (ScsiCmd, INFO_XFER_CMD);
|
|
}
|
|
else
|
|
{
|
|
mop1:
|
|
printk (KERN_ERR "DC390: OLD Sync Nego code triggered! (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN);
|
|
DC390_write8 (ScsiFifo, EXTENDED_MESSAGE);
|
|
DC390_write8 (ScsiFifo, 3); /* ;length of extended msg */
|
|
DC390_write8 (ScsiFifo, EXTENDED_SDTR); /* ; sync nego */
|
|
DC390_write8 (ScsiFifo, pDCB->NegoPeriod);
|
|
if (pDCB->SyncOffset & 0x0f)
|
|
DC390_write8 (ScsiFifo, pDCB->SyncOffset);
|
|
else
|
|
DC390_write8 (ScsiFifo, SYNC_NEGO_OFFSET);
|
|
pSRB->SRBState |= DO_SYNC_NEGO;
|
|
DC390_write8 (ScsiCmd, INFO_XFER_CMD);
|
|
}
|
|
}
|
|
|
|
static void
|
|
dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
|
|
{
|
|
DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
|
|
if( !(pSRB->SRBState & SRB_MSGIN) )
|
|
{
|
|
pSRB->SRBState &= ~SRB_DISCONNECT;
|
|
pSRB->SRBState |= SRB_MSGIN;
|
|
}
|
|
DC390_write8 (ScsiCmd, INFO_XFER_CMD);
|
|
//DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
|
|
}
|
|
|
|
static void
|
|
dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
|
|
{
|
|
}
|
|
|
|
static void
|
|
dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
|
|
{
|
|
}
|
|
|
|
|
|
static void
|
|
dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB )
|
|
{
|
|
u8 bval, i, cnt;
|
|
struct dc390_dcb* ptr;
|
|
|
|
if( !(pDCB->TargetLUN) )
|
|
{
|
|
if( !pACB->scan_devices )
|
|
{
|
|
ptr = pACB->pLinkDCB;
|
|
cnt = pACB->DCBCnt;
|
|
bval = pDCB->TargetID;
|
|
for(i=0; i<cnt; i++)
|
|
{
|
|
if( ptr->TargetID == bval )
|
|
{
|
|
ptr->SyncPeriod = pDCB->SyncPeriod;
|
|
ptr->SyncOffset = pDCB->SyncOffset;
|
|
ptr->CtrlR3 = pDCB->CtrlR3;
|
|
ptr->CtrlR4 = pDCB->CtrlR4;
|
|
ptr->SyncMode = pDCB->SyncMode;
|
|
}
|
|
ptr = ptr->pNextDCB;
|
|
}
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
|
|
static void
|
|
dc390_Disconnect( struct dc390_acb* pACB )
|
|
{
|
|
struct dc390_dcb *pDCB;
|
|
struct dc390_srb *pSRB, *psrb;
|
|
u8 i, cnt;
|
|
|
|
DEBUG0(printk(KERN_INFO "DISC,"));
|
|
|
|
if (!pACB->Connected) printk(KERN_ERR "DC390: Disconnect not-connected bus?\n");
|
|
pACB->Connected = 0;
|
|
pDCB = pACB->pActiveDCB;
|
|
if (!pDCB)
|
|
{
|
|
DEBUG0(printk(KERN_ERR "ACB:%p->ActiveDCB:%p IOPort:%04x IRQ:%02x !\n",\
|
|
pACB, pDCB, pACB->IOPortBase, pACB->IRQLevel));
|
|
mdelay(400);
|
|
DC390_read8 (INT_Status); /* Reset Pending INT */
|
|
DC390_write8 (ScsiCmd, EN_SEL_RESEL);
|
|
return;
|
|
}
|
|
DC390_write8 (ScsiCmd, EN_SEL_RESEL);
|
|
pSRB = pDCB->pActiveSRB;
|
|
pACB->pActiveDCB = NULL;
|
|
pSRB->ScsiPhase = SCSI_NOP0;
|
|
if( pSRB->SRBState & SRB_UNEXPECT_RESEL )
|
|
pSRB->SRBState = 0;
|
|
else if( pSRB->SRBState & SRB_ABORT_SENT )
|
|
{
|
|
pDCB->TagMask = 0;
|
|
pDCB->DCBFlag = 0;
|
|
cnt = pDCB->GoingSRBCnt;
|
|
pDCB->GoingSRBCnt = 0;
|
|
pSRB = pDCB->pGoingSRB;
|
|
for( i=0; i < cnt; i++)
|
|
{
|
|
psrb = pSRB->pNextSRB;
|
|
dc390_Free_insert (pACB, pSRB);
|
|
pSRB = psrb;
|
|
}
|
|
pDCB->pGoingSRB = NULL;
|
|
}
|
|
else
|
|
{
|
|
if( (pSRB->SRBState & (SRB_START_+SRB_MSGOUT)) ||
|
|
!(pSRB->SRBState & (SRB_DISCONNECT+SRB_COMPLETED)) )
|
|
{ /* Selection time out */
|
|
pSRB->TargetStatus = SCSI_STAT_SEL_TIMEOUT;
|
|
goto disc1;
|
|
}
|
|
else if (!(pSRB->SRBState & SRB_DISCONNECT) && (pSRB->SRBState & SRB_COMPLETED))
|
|
{
|
|
disc1:
|
|
dc390_freetag (pDCB, pSRB);
|
|
pDCB->pActiveSRB = NULL;
|
|
pSRB->SRBState = SRB_FREE;
|
|
dc390_SRBdone( pACB, pDCB, pSRB);
|
|
}
|
|
}
|
|
pACB->MsgLen = 0;
|
|
}
|
|
|
|
|
|
static void
|
|
dc390_Reselect( struct dc390_acb* pACB )
|
|
{
|
|
struct dc390_dcb* pDCB;
|
|
struct dc390_srb* pSRB;
|
|
u8 id, lun;
|
|
|
|
DEBUG0(printk(KERN_INFO "RSEL,"));
|
|
pACB->Connected = 1;
|
|
pDCB = pACB->pActiveDCB;
|
|
if( pDCB )
|
|
{ /* Arbitration lost but Reselection won */
|
|
DEBUG0(printk ("DC390: (ActiveDCB != 0: Arb. lost but resel. won)!\n"));
|
|
pSRB = pDCB->pActiveSRB;
|
|
if( !( pACB->scan_devices ) )
|
|
{
|
|
struct scsi_cmnd *pcmd = pSRB->pcmd;
|
|
pcmd->resid = pcmd->request_bufflen;
|
|
SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
|
|
dc390_Going_remove(pDCB, pSRB);
|
|
dc390_Free_insert(pACB, pSRB);
|
|
pcmd->scsi_done (pcmd);
|
|
DEBUG0(printk(KERN_DEBUG"DC390: Return SRB %p to free\n", pSRB));
|
|
}
|
|
}
|
|
/* Get ID */
|
|
lun = DC390_read8 (ScsiFifo);
|
|
DEBUG0(printk ("Dev %02x,", lun));
|
|
if (!(lun & (1 << pACB->pScsiHost->this_id)))
|
|
printk (KERN_ERR "DC390: Reselection must select host adapter: %02x!\n", lun);
|
|
else
|
|
lun ^= 1 << pACB->pScsiHost->this_id; /* Mask AdapterID */
|
|
id = 0; while (lun >>= 1) id++;
|
|
/* Get LUN */
|
|
lun = DC390_read8 (ScsiFifo);
|
|
if (!(lun & IDENTIFY_BASE)) printk (KERN_ERR "DC390: Resel: Expect identify message!\n");
|
|
lun &= 7;
|
|
DEBUG0(printk ("(%02i-%i),", id, lun));
|
|
pDCB = dc390_findDCB (pACB, id, lun);
|
|
if (!pDCB)
|
|
{
|
|
printk (KERN_ERR "DC390: Reselect from non existing device (%02i-%i)\n",
|
|
id, lun);
|
|
return;
|
|
}
|
|
pACB->pActiveDCB = pDCB;
|
|
/* TagQ: We expect a message soon, so never mind the exact SRB */
|
|
if( pDCB->SyncMode & EN_TAG_QUEUEING )
|
|
{
|
|
pSRB = pACB->pTmpSRB;
|
|
pDCB->pActiveSRB = pSRB;
|
|
}
|
|
else
|
|
{
|
|
pSRB = pDCB->pActiveSRB;
|
|
if( !pSRB || !(pSRB->SRBState & SRB_DISCONNECT) )
|
|
{
|
|
pSRB= pACB->pTmpSRB;
|
|
pSRB->SRBState = SRB_UNEXPECT_RESEL;
|
|
printk (KERN_ERR "DC390: Reselect without outstanding cmnd (%02i-%i)\n",
|
|
id, lun);
|
|
pDCB->pActiveSRB = pSRB;
|
|
dc390_EnableMsgOut_Abort ( pACB, pSRB );
|
|
}
|
|
else
|
|
{
|
|
if( pDCB->DCBFlag & ABORT_DEV_ )
|
|
{
|
|
pSRB->SRBState = SRB_ABORT_SENT;
|
|
printk (KERN_INFO "DC390: Reselect: Abort (%02i-%i)\n",
|
|
id, lun);
|
|
dc390_EnableMsgOut_Abort( pACB, pSRB );
|
|
}
|
|
else
|
|
pSRB->SRBState = SRB_DATA_XFER;
|
|
}
|
|
}
|
|
|
|
DEBUG1(printk (KERN_DEBUG "Resel SRB(%p): TagNum (%02x)\n", pSRB, pSRB->TagNumber));
|
|
pSRB->ScsiPhase = SCSI_NOP0;
|
|
DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
|
|
DC390_write8 (Sync_Period, pDCB->SyncPeriod);
|
|
DC390_write8 (Sync_Offset, pDCB->SyncOffset);
|
|
DC390_write8 (CtrlReg1, pDCB->CtrlR1);
|
|
DC390_write8 (CtrlReg3, pDCB->CtrlR3);
|
|
DC390_write8 (CtrlReg4, pDCB->CtrlR4); /* ; Glitch eater */
|
|
DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); /* ;to release the /ACK signal */
|
|
}
|
|
|
|
static int __inline__
|
|
dc390_RequestSense(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
|
|
{
|
|
struct scsi_cmnd *pcmd;
|
|
|
|
pcmd = pSRB->pcmd;
|
|
|
|
REMOVABLEDEBUG(printk(KERN_INFO "DC390: RequestSense(Cmd %02x, Id %02x, LUN %02x)\n",\
|
|
pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN));
|
|
|
|
pSRB->SRBFlag |= AUTO_REQSENSE;
|
|
pSRB->SavedSGCount = pcmd->use_sg;
|
|
pSRB->SavedTotXLen = pSRB->TotalXferredLen;
|
|
pSRB->AdaptStatus = 0;
|
|
pSRB->TargetStatus = 0; /* CHECK_CONDITION<<1; */
|
|
|
|
/* We are called from SRBdone, original PCI mapping has been removed
|
|
* already, new one is set up from StartSCSI */
|
|
pSRB->SGIndex = 0;
|
|
|
|
pSRB->TotalXferredLen = 0;
|
|
pSRB->SGToBeXferLen = 0;
|
|
return dc390_StartSCSI(pACB, pDCB, pSRB);
|
|
}
|
|
|
|
|
|
static void
|
|
dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
|
|
{
|
|
u8 status;
|
|
struct scsi_cmnd *pcmd;
|
|
|
|
pcmd = pSRB->pcmd;
|
|
/* KG: Moved pci_unmap here */
|
|
dc390_pci_unmap(pSRB);
|
|
|
|
status = pSRB->TargetStatus;
|
|
|
|
DEBUG0(printk (" SRBdone (%02x,%08x), SRB %p, pid %li\n", status, pcmd->result,\
|
|
pSRB, pcmd->pid));
|
|
if(pSRB->SRBFlag & AUTO_REQSENSE)
|
|
{ /* Last command was a Request Sense */
|
|
pSRB->SRBFlag &= ~AUTO_REQSENSE;
|
|
pSRB->AdaptStatus = 0;
|
|
pSRB->TargetStatus = CHECK_CONDITION << 1;
|
|
|
|
//pcmd->result = MK_RES(DRIVER_SENSE,DID_OK,0,status);
|
|
if (status == (CHECK_CONDITION << 1))
|
|
pcmd->result = MK_RES_LNX(0, DID_BAD_TARGET, 0, /*CHECK_CONDITION*/0);
|
|
else /* Retry */
|
|
{
|
|
if( pSRB->pcmd->cmnd[0] == TEST_UNIT_READY /* || pSRB->pcmd->cmnd[0] == START_STOP */)
|
|
{
|
|
/* Don't retry on TEST_UNIT_READY */
|
|
pcmd->result = MK_RES_LNX(DRIVER_SENSE,DID_OK,0,CHECK_CONDITION);
|
|
REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x, Result=%08x, XferL=%08x\n",pSRB->pcmd->cmnd[0],\
|
|
(u32) pcmd->result, (u32) pSRB->TotalXferredLen));
|
|
} else {
|
|
SET_RES_DRV(pcmd->result, DRIVER_SENSE);
|
|
pcmd->use_sg = pSRB->SavedSGCount;
|
|
//pSRB->ScsiCmdLen = (u8) (pSRB->Segment1[0] >> 8);
|
|
DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun));
|
|
pSRB->TotalXferredLen = 0;
|
|
SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
|
|
}
|
|
}
|
|
goto cmd_done;
|
|
}
|
|
if( status )
|
|
{
|
|
if( status_byte(status) == CHECK_CONDITION )
|
|
{
|
|
if (dc390_RequestSense(pACB, pDCB, pSRB)) {
|
|
SET_RES_DID(pcmd->result, DID_ERROR);
|
|
goto cmd_done;
|
|
}
|
|
return;
|
|
}
|
|
else if( status_byte(status) == QUEUE_FULL )
|
|
{
|
|
scsi_track_queue_full(pcmd->device, pDCB->GoingSRBCnt - 1);
|
|
pcmd->use_sg = pSRB->SavedSGCount;
|
|
DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun));
|
|
pSRB->TotalXferredLen = 0;
|
|
SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
|
|
}
|
|
else if(status == SCSI_STAT_SEL_TIMEOUT)
|
|
{
|
|
pSRB->AdaptStatus = H_SEL_TIMEOUT;
|
|
pSRB->TargetStatus = 0;
|
|
pcmd->result = MK_RES(0,DID_NO_CONNECT,0,0);
|
|
/* Devices are removed below ... */
|
|
}
|
|
else if (status_byte(status) == BUSY &&
|
|
(pcmd->cmnd[0] == TEST_UNIT_READY || pcmd->cmnd[0] == INQUIRY) &&
|
|
pACB->scan_devices)
|
|
{
|
|
pSRB->AdaptStatus = 0;
|
|
pSRB->TargetStatus = status;
|
|
pcmd->result = MK_RES(0,0,pSRB->EndMessage,/*status*/0);
|
|
}
|
|
else
|
|
{ /* Another error */
|
|
pSRB->TotalXferredLen = 0;
|
|
SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
|
|
goto cmd_done;
|
|
}
|
|
}
|
|
else
|
|
{ /* Target status == 0 */
|
|
status = pSRB->AdaptStatus;
|
|
if(status & H_OVER_UNDER_RUN)
|
|
{
|
|
pSRB->TargetStatus = 0;
|
|
SET_RES_DID(pcmd->result,DID_OK);
|
|
SET_RES_MSG(pcmd->result,pSRB->EndMessage);
|
|
}
|
|
else if( pSRB->SRBStatus & PARITY_ERROR)
|
|
{
|
|
//pcmd->result = MK_RES(0,DID_PARITY,pSRB->EndMessage,0);
|
|
SET_RES_DID(pcmd->result,DID_PARITY);
|
|
SET_RES_MSG(pcmd->result,pSRB->EndMessage);
|
|
}
|
|
else /* No error */
|
|
{
|
|
pSRB->AdaptStatus = 0;
|
|
pSRB->TargetStatus = 0;
|
|
SET_RES_DID(pcmd->result,DID_OK);
|
|
}
|
|
}
|
|
|
|
cmd_done:
|
|
pcmd->resid = pcmd->request_bufflen - pSRB->TotalXferredLen;
|
|
|
|
dc390_Going_remove (pDCB, pSRB);
|
|
/* Add to free list */
|
|
dc390_Free_insert (pACB, pSRB);
|
|
|
|
DEBUG0(printk (KERN_DEBUG "DC390: SRBdone: done pid %li\n", pcmd->pid));
|
|
pcmd->scsi_done (pcmd);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/* Remove all SRBs from Going list and inform midlevel */
|
|
static void
|
|
dc390_DoingSRB_Done(struct dc390_acb* pACB, struct scsi_cmnd *cmd)
|
|
{
|
|
struct dc390_dcb *pDCB, *pdcb;
|
|
struct dc390_srb *psrb, *psrb2;
|
|
int i;
|
|
struct scsi_cmnd *pcmd;
|
|
|
|
pDCB = pACB->pLinkDCB;
|
|
pdcb = pDCB;
|
|
if (! pdcb) return;
|
|
do
|
|
{
|
|
psrb = pdcb->pGoingSRB;
|
|
for (i = 0; i < pdcb->GoingSRBCnt; i++)
|
|
{
|
|
psrb2 = psrb->pNextSRB;
|
|
pcmd = psrb->pcmd;
|
|
dc390_Free_insert (pACB, psrb);
|
|
psrb = psrb2;
|
|
}
|
|
pdcb->GoingSRBCnt = 0;
|
|
pdcb->pGoingSRB = NULL;
|
|
pdcb->TagMask = 0;
|
|
pdcb = pdcb->pNextDCB;
|
|
} while( pdcb != pDCB );
|
|
}
|
|
|
|
|
|
static void
|
|
dc390_ResetSCSIBus( struct dc390_acb* pACB )
|
|
{
|
|
//DC390_write8 (ScsiCmd, RST_DEVICE_CMD);
|
|
//udelay (250);
|
|
//DC390_write8 (ScsiCmd, NOP_CMD);
|
|
|
|
DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
|
|
DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
|
|
DC390_write8 (ScsiCmd, RST_SCSI_BUS_CMD);
|
|
pACB->Connected = 0;
|
|
|
|
return;
|
|
}
|
|
|
|
static void
|
|
dc390_ScsiRstDetect( struct dc390_acb* pACB )
|
|
{
|
|
printk ("DC390: Rst_Detect: laststat = %08x\n", dc390_laststatus);
|
|
//DEBUG0(printk(KERN_INFO "RST_DETECT,"));
|
|
|
|
DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
|
|
/* Unlock before ? */
|
|
/* delay half a second */
|
|
udelay (1000);
|
|
DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
|
|
pACB->pScsiHost->last_reset = jiffies + 5*HZ/2
|
|
+ HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
|
|
pACB->Connected = 0;
|
|
|
|
if( pACB->ACBFlag & RESET_DEV )
|
|
pACB->ACBFlag |= RESET_DONE;
|
|
else
|
|
{ /* Reset was issued by sb else */
|
|
pACB->ACBFlag |= RESET_DETECT;
|
|
|
|
dc390_ResetDevParam( pACB );
|
|
dc390_DoingSRB_Done( pACB, NULL);
|
|
//dc390_RecoverSRB( pACB );
|
|
pACB->pActiveDCB = NULL;
|
|
pACB->ACBFlag = 0;
|
|
}
|
|
return;
|
|
}
|
|
|
|
static int DC390_queuecommand(struct scsi_cmnd *cmd,
|
|
void (*done)(struct scsi_cmnd *))
|
|
{
|
|
struct scsi_device *sdev = cmd->device;
|
|
struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
|
|
struct dc390_dcb *dcb = sdev->hostdata;
|
|
struct dc390_srb *srb;
|
|
|
|
if (sdev->queue_depth <= dcb->GoingSRBCnt)
|
|
goto device_busy;
|
|
if (acb->pActiveDCB)
|
|
goto host_busy;
|
|
if (acb->ACBFlag & (RESET_DETECT|RESET_DONE|RESET_DEV))
|
|
goto host_busy;
|
|
|
|
srb = acb->pFreeSRB;
|
|
if (unlikely(srb == NULL))
|
|
goto host_busy;
|
|
|
|
cmd->scsi_done = done;
|
|
cmd->result = 0;
|
|
acb->Cmds++;
|
|
|
|
acb->pFreeSRB = srb->pNextSRB;
|
|
srb->pNextSRB = NULL;
|
|
|
|
srb->pSRBDCB = dcb;
|
|
srb->pcmd = cmd;
|
|
cmd->host_scribble = (char *)srb;
|
|
|
|
srb->SGIndex = 0;
|
|
srb->AdaptStatus = 0;
|
|
srb->TargetStatus = 0;
|
|
srb->MsgCnt = 0;
|
|
|
|
srb->SRBStatus = 0;
|
|
srb->SRBFlag = 0;
|
|
srb->SRBState = 0;
|
|
srb->TotalXferredLen = 0;
|
|
srb->SGBusAddr = 0;
|
|
srb->SGToBeXferLen = 0;
|
|
srb->ScsiPhase = 0;
|
|
srb->EndMessage = 0;
|
|
srb->TagNumber = SCSI_NO_TAG;
|
|
|
|
if (dc390_StartSCSI(acb, dcb, srb)) {
|
|
dc390_Free_insert(acb, srb);
|
|
goto host_busy;
|
|
}
|
|
|
|
dc390_Going_append(dcb, srb);
|
|
|
|
return 0;
|
|
|
|
host_busy:
|
|
return SCSI_MLQUEUE_HOST_BUSY;
|
|
|
|
device_busy:
|
|
return SCSI_MLQUEUE_DEVICE_BUSY;
|
|
}
|
|
|
|
static void dc390_dumpinfo (struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
|
|
{
|
|
struct pci_dev *pdev;
|
|
u16 pstat;
|
|
|
|
if (!pDCB) pDCB = pACB->pActiveDCB;
|
|
if (!pSRB && pDCB) pSRB = pDCB->pActiveSRB;
|
|
|
|
if (pSRB)
|
|
{
|
|
printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n",
|
|
pSRB->TotalXferredLen, pSRB->SGToBeXferLen, pSRB->SRBState,
|
|
pSRB->ScsiPhase);
|
|
printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB->AdaptStatus, pSRB->SRBStatus);
|
|
}
|
|
printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus);
|
|
printk ("DC390: Register dump: SCSI block:\n");
|
|
printk ("DC390: XferCnt Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n");
|
|
printk ("DC390: %06x %02x %02x %02x",
|
|
DC390_read8(CtcReg_Low) + (DC390_read8(CtcReg_Mid) << 8) + (DC390_read8(CtcReg_High) << 16),
|
|
DC390_read8(ScsiCmd), DC390_read8(Scsi_Status), DC390_read8(Intern_State));
|
|
printk (" %02x %02x %02x %02x %02x %02x\n",
|
|
DC390_read8(INT_Status), DC390_read8(Current_Fifo), DC390_read8(CtrlReg1),
|
|
DC390_read8(CtrlReg2), DC390_read8(CtrlReg3), DC390_read8(CtrlReg4));
|
|
DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
|
|
if (DC390_read8(Current_Fifo) & 0x1f)
|
|
{
|
|
printk ("DC390: FIFO:");
|
|
while (DC390_read8(Current_Fifo) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo));
|
|
printk ("\n");
|
|
}
|
|
printk ("DC390: Register dump: DMA engine:\n");
|
|
printk ("DC390: Cmd STrCnt SBusA WrkBC WrkAC Stat SBusCtrl\n");
|
|
printk ("DC390: %02x %08x %08x %08x %08x %02x %08x\n",
|
|
DC390_read8(DMA_Cmd), DC390_read32(DMA_XferCnt), DC390_read32(DMA_XferAddr),
|
|
DC390_read32(DMA_Wk_ByteCntr), DC390_read32(DMA_Wk_AddrCntr),
|
|
DC390_read8(DMA_Status), DC390_read32(DMA_ScsiBusCtrl));
|
|
DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
|
|
|
|
pdev = pACB->pdev;
|
|
pci_read_config_word(pdev, PCI_STATUS, &pstat);
|
|
printk ("DC390: Register dump: PCI Status: %04x\n", pstat);
|
|
printk ("DC390: In case of driver trouble read Documentation/scsi/tmscsim.txt\n");
|
|
}
|
|
|
|
|
|
static int DC390_abort(struct scsi_cmnd *cmd)
|
|
{
|
|
struct dc390_acb *pACB = (struct dc390_acb*) cmd->device->host->hostdata;
|
|
struct dc390_dcb *pDCB = (struct dc390_dcb*) cmd->device->hostdata;
|
|
|
|
scmd_printk(KERN_WARNING, cmd,
|
|
"DC390: Abort command (pid %li)\n", cmd->pid);
|
|
|
|
/* abort() is too stupid for already sent commands at the moment.
|
|
* If it's called we are in trouble anyway, so let's dump some info
|
|
* into the syslog at least. (KG, 98/08/20,99/06/20) */
|
|
dc390_dumpinfo(pACB, pDCB, NULL);
|
|
|
|
pDCB->DCBFlag |= ABORT_DEV_;
|
|
printk(KERN_INFO "DC390: Aborted pid %li\n", cmd->pid);
|
|
|
|
return FAILED;
|
|
}
|
|
|
|
|
|
static void dc390_ResetDevParam( struct dc390_acb* pACB )
|
|
{
|
|
struct dc390_dcb *pDCB, *pdcb;
|
|
|
|
pDCB = pACB->pLinkDCB;
|
|
if (! pDCB) return;
|
|
pdcb = pDCB;
|
|
do
|
|
{
|
|
pDCB->SyncMode &= ~SYNC_NEGO_DONE;
|
|
pDCB->SyncPeriod = 0;
|
|
pDCB->SyncOffset = 0;
|
|
pDCB->TagMask = 0;
|
|
pDCB->CtrlR3 = FAST_CLK;
|
|
pDCB->CtrlR4 &= NEGATE_REQACKDATA | CTRL4_RESERVED | NEGATE_REQACK;
|
|
pDCB->CtrlR4 |= pACB->glitch_cfg;
|
|
pDCB = pDCB->pNextDCB;
|
|
}
|
|
while( pdcb != pDCB );
|
|
pACB->ACBFlag &= ~(RESET_DEV | RESET_DONE | RESET_DETECT);
|
|
|
|
}
|
|
|
|
static int DC390_bus_reset (struct scsi_cmnd *cmd)
|
|
{
|
|
struct dc390_acb* pACB = (struct dc390_acb*) cmd->device->host->hostdata;
|
|
u8 bval;
|
|
|
|
spin_lock_irq(cmd->device->host->host_lock);
|
|
|
|
bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
|
|
DC390_write8(CtrlReg1, bval); /* disable IRQ on bus reset */
|
|
|
|
pACB->ACBFlag |= RESET_DEV;
|
|
dc390_ResetSCSIBus(pACB);
|
|
|
|
dc390_ResetDevParam(pACB);
|
|
mdelay(1);
|
|
pACB->pScsiHost->last_reset = jiffies + 3*HZ/2
|
|
+ HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
|
|
|
|
DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
|
|
DC390_read8(INT_Status); /* Reset Pending INT */
|
|
|
|
dc390_DoingSRB_Done(pACB, cmd);
|
|
|
|
pACB->pActiveDCB = NULL;
|
|
pACB->ACBFlag = 0;
|
|
|
|
bval = DC390_read8(CtrlReg1) & ~DIS_INT_ON_SCSI_RST;
|
|
DC390_write8(CtrlReg1, bval); /* re-enable interrupt */
|
|
|
|
spin_unlock_irq(cmd->device->host->host_lock);
|
|
|
|
return SUCCESS;
|
|
}
|
|
|
|
/**
|
|
* dc390_slave_alloc - Called by the scsi mid layer to tell us about a new
|
|
* scsi device that we need to deal with.
|
|
*
|
|
* @scsi_device: The new scsi device that we need to handle.
|
|
*/
|
|
static int dc390_slave_alloc(struct scsi_device *scsi_device)
|
|
{
|
|
struct dc390_acb *pACB = (struct dc390_acb*) scsi_device->host->hostdata;
|
|
struct dc390_dcb *pDCB, *pDCB2 = NULL;
|
|
uint id = scsi_device->id;
|
|
uint lun = scsi_device->lun;
|
|
|
|
pDCB = kmalloc(sizeof(struct dc390_dcb), GFP_KERNEL);
|
|
if (!pDCB)
|
|
return -ENOMEM;
|
|
memset(pDCB, 0, sizeof(struct dc390_dcb));
|
|
|
|
if (!pACB->DCBCnt++) {
|
|
pACB->pLinkDCB = pDCB;
|
|
pACB->pDCBRunRobin = pDCB;
|
|
} else {
|
|
pACB->pLastDCB->pNextDCB = pDCB;
|
|
}
|
|
|
|
pDCB->pNextDCB = pACB->pLinkDCB;
|
|
pACB->pLastDCB = pDCB;
|
|
|
|
pDCB->pDCBACB = pACB;
|
|
pDCB->TargetID = id;
|
|
pDCB->TargetLUN = lun;
|
|
|
|
/*
|
|
* Some values are for all LUNs: Copy them
|
|
* In a clean way: We would have an own structure for a SCSI-ID
|
|
*/
|
|
if (lun && (pDCB2 = dc390_findDCB(pACB, id, 0))) {
|
|
pDCB->DevMode = pDCB2->DevMode;
|
|
pDCB->SyncMode = pDCB2->SyncMode & SYNC_NEGO_DONE;
|
|
pDCB->SyncPeriod = pDCB2->SyncPeriod;
|
|
pDCB->SyncOffset = pDCB2->SyncOffset;
|
|
pDCB->NegoPeriod = pDCB2->NegoPeriod;
|
|
|
|
pDCB->CtrlR3 = pDCB2->CtrlR3;
|
|
pDCB->CtrlR4 = pDCB2->CtrlR4;
|
|
} else {
|
|
u8 index = pACB->AdapterIndex;
|
|
PEEprom prom = (PEEprom) &dc390_eepromBuf[index][id << 2];
|
|
|
|
pDCB->DevMode = prom->EE_MODE1;
|
|
pDCB->NegoPeriod =
|
|
(dc390_clock_period1[prom->EE_SPEED] * 25) >> 2;
|
|
pDCB->CtrlR3 = FAST_CLK;
|
|
pDCB->CtrlR4 = pACB->glitch_cfg | CTRL4_RESERVED;
|
|
if (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION)
|
|
pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK;
|
|
}
|
|
|
|
if (pDCB->DevMode & SYNC_NEGO_)
|
|
pDCB->SyncMode |= SYNC_ENABLE;
|
|
else {
|
|
pDCB->SyncMode = 0;
|
|
pDCB->SyncOffset &= ~0x0f;
|
|
}
|
|
|
|
pDCB->CtrlR1 = pACB->pScsiHost->this_id;
|
|
if (pDCB->DevMode & PARITY_CHK_)
|
|
pDCB->CtrlR1 |= PARITY_ERR_REPO;
|
|
|
|
pACB->scan_devices = 1;
|
|
scsi_device->hostdata = pDCB;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* dc390_slave_destroy - Called by the scsi mid layer to tell us about a
|
|
* device that is going away.
|
|
*
|
|
* @scsi_device: The scsi device that we need to remove.
|
|
*/
|
|
static void dc390_slave_destroy(struct scsi_device *scsi_device)
|
|
{
|
|
struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata;
|
|
struct dc390_dcb* pDCB = (struct dc390_dcb*) scsi_device->hostdata;
|
|
struct dc390_dcb* pPrevDCB = pACB->pLinkDCB;
|
|
|
|
pACB->scan_devices = 0;
|
|
|
|
BUG_ON(pDCB->GoingSRBCnt > 1);
|
|
|
|
if (pDCB == pACB->pLinkDCB) {
|
|
if (pACB->pLastDCB == pDCB) {
|
|
pDCB->pNextDCB = NULL;
|
|
pACB->pLastDCB = NULL;
|
|
}
|
|
pACB->pLinkDCB = pDCB->pNextDCB;
|
|
} else {
|
|
while (pPrevDCB->pNextDCB != pDCB)
|
|
pPrevDCB = pPrevDCB->pNextDCB;
|
|
pPrevDCB->pNextDCB = pDCB->pNextDCB;
|
|
if (pDCB == pACB->pLastDCB)
|
|
pACB->pLastDCB = pPrevDCB;
|
|
}
|
|
|
|
if (pDCB == pACB->pActiveDCB)
|
|
pACB->pActiveDCB = NULL;
|
|
if (pDCB == pACB->pLinkDCB)
|
|
pACB->pLinkDCB = pDCB->pNextDCB;
|
|
if (pDCB == pACB->pDCBRunRobin)
|
|
pACB->pDCBRunRobin = pDCB->pNextDCB;
|
|
kfree(pDCB);
|
|
|
|
pACB->DCBCnt--;
|
|
}
|
|
|
|
static int dc390_slave_configure(struct scsi_device *sdev)
|
|
{
|
|
struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
|
|
struct dc390_dcb *dcb = (struct dc390_dcb *)sdev->hostdata;
|
|
|
|
acb->scan_devices = 0;
|
|
if (sdev->tagged_supported && (dcb->DevMode & TAG_QUEUEING_)) {
|
|
dcb->SyncMode |= EN_TAG_QUEUEING;
|
|
scsi_activate_tcq(sdev, acb->TagMaxNum);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct scsi_host_template driver_template = {
|
|
.module = THIS_MODULE,
|
|
.proc_name = "tmscsim",
|
|
.name = DC390_BANNER " V" DC390_VERSION,
|
|
.slave_alloc = dc390_slave_alloc,
|
|
.slave_configure = dc390_slave_configure,
|
|
.slave_destroy = dc390_slave_destroy,
|
|
.queuecommand = DC390_queuecommand,
|
|
.eh_abort_handler = DC390_abort,
|
|
.eh_bus_reset_handler = DC390_bus_reset,
|
|
.can_queue = 1,
|
|
.this_id = 7,
|
|
.sg_tablesize = SG_ALL,
|
|
.cmd_per_lun = 1,
|
|
.use_clustering = ENABLE_CLUSTERING,
|
|
.max_sectors = 0x4000, /* 8MiB = 16 * 1024 * 512 */
|
|
};
|
|
|
|
/***********************************************************************
|
|
* Functions for access to DC390 EEPROM
|
|
* and some to emulate it
|
|
*
|
|
**********************************************************************/
|
|
|
|
static void __devinit dc390_eeprom_prepare_read(struct pci_dev *pdev, u8 cmd)
|
|
{
|
|
u8 carryFlag = 1, j = 0x80, bval;
|
|
int i;
|
|
|
|
for (i = 0; i < 9; i++) {
|
|
if (carryFlag) {
|
|
pci_write_config_byte(pdev, 0x80, 0x40);
|
|
bval = 0xc0;
|
|
} else
|
|
bval = 0x80;
|
|
|
|
udelay(160);
|
|
pci_write_config_byte(pdev, 0x80, bval);
|
|
udelay(160);
|
|
pci_write_config_byte(pdev, 0x80, 0);
|
|
udelay(160);
|
|
|
|
carryFlag = (cmd & j) ? 1 : 0;
|
|
j >>= 1;
|
|
}
|
|
}
|
|
|
|
static u16 __devinit dc390_eeprom_get_data(struct pci_dev *pdev)
|
|
{
|
|
int i;
|
|
u16 wval = 0;
|
|
u8 bval;
|
|
|
|
for (i = 0; i < 16; i++) {
|
|
wval <<= 1;
|
|
|
|
pci_write_config_byte(pdev, 0x80, 0x80);
|
|
udelay(160);
|
|
pci_write_config_byte(pdev, 0x80, 0x40);
|
|
udelay(160);
|
|
pci_read_config_byte(pdev, 0x00, &bval);
|
|
|
|
if (bval == 0x22)
|
|
wval |= 1;
|
|
}
|
|
|
|
return wval;
|
|
}
|
|
|
|
static void __devinit dc390_read_eeprom(struct pci_dev *pdev, u16 *ptr)
|
|
{
|
|
u8 cmd = EEPROM_READ, i;
|
|
|
|
for (i = 0; i < 0x40; i++) {
|
|
pci_write_config_byte(pdev, 0xc0, 0);
|
|
udelay(160);
|
|
|
|
dc390_eeprom_prepare_read(pdev, cmd++);
|
|
*ptr++ = dc390_eeprom_get_data(pdev);
|
|
|
|
pci_write_config_byte(pdev, 0x80, 0);
|
|
pci_write_config_byte(pdev, 0x80, 0);
|
|
udelay(160);
|
|
}
|
|
}
|
|
|
|
/* Override EEprom values with explicitly set values */
|
|
static void __devinit dc390_eeprom_override(u8 index)
|
|
{
|
|
u8 *ptr = (u8 *) dc390_eepromBuf[index], id;
|
|
|
|
/* Adapter Settings */
|
|
if (tmscsim[0] != -2)
|
|
ptr[EE_ADAPT_SCSI_ID] = (u8)tmscsim[0]; /* Adapter ID */
|
|
if (tmscsim[3] != -2)
|
|
ptr[EE_MODE2] = (u8)tmscsim[3];
|
|
if (tmscsim[5] != -2)
|
|
ptr[EE_DELAY] = tmscsim[5]; /* Reset delay */
|
|
if (tmscsim[4] != -2)
|
|
ptr[EE_TAG_CMD_NUM] = (u8)tmscsim[4]; /* Tagged Cmds */
|
|
|
|
/* Device Settings */
|
|
for (id = 0; id < MAX_SCSI_ID; id++) {
|
|
if (tmscsim[2] != -2)
|
|
ptr[id << 2] = (u8)tmscsim[2]; /* EE_MODE1 */
|
|
if (tmscsim[1] != -2)
|
|
ptr[(id << 2) + 1] = (u8)tmscsim[1]; /* EE_Speed */
|
|
}
|
|
}
|
|
|
|
static int __devinitdata tmscsim_def[] = {
|
|
7,
|
|
0 /* 10MHz */,
|
|
PARITY_CHK_ | SEND_START_ | EN_DISCONNECT_ | SYNC_NEGO_ | TAG_QUEUEING_,
|
|
MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION | LUN_CHECK,
|
|
3 /* 16 Tags per LUN */,
|
|
1 /* s delay after Reset */,
|
|
};
|
|
|
|
/* Copy defaults over set values where missing */
|
|
static void __devinit dc390_fill_with_defaults (void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 6; i++) {
|
|
if (tmscsim[i] < 0 || tmscsim[i] > 255)
|
|
tmscsim[i] = tmscsim_def[i];
|
|
}
|
|
|
|
/* Sanity checks */
|
|
if (tmscsim[0] > 7)
|
|
tmscsim[0] = 7;
|
|
if (tmscsim[1] > 7)
|
|
tmscsim[1] = 4;
|
|
if (tmscsim[4] > 5)
|
|
tmscsim[4] = 4;
|
|
if (tmscsim[5] > 180)
|
|
tmscsim[5] = 180;
|
|
}
|
|
|
|
static void __devinit dc390_check_eeprom(struct pci_dev *pdev, u8 index)
|
|
{
|
|
u8 interpd[] = {1, 3, 5, 10, 16, 30, 60, 120};
|
|
u8 EEbuf[128];
|
|
u16 *ptr = (u16 *)EEbuf, wval = 0;
|
|
int i;
|
|
|
|
dc390_read_eeprom(pdev, ptr);
|
|
memcpy(dc390_eepromBuf[index], EEbuf, EE_ADAPT_SCSI_ID);
|
|
memcpy(&dc390_eepromBuf[index][EE_ADAPT_SCSI_ID],
|
|
&EEbuf[REAL_EE_ADAPT_SCSI_ID], EE_LEN - EE_ADAPT_SCSI_ID);
|
|
|
|
dc390_eepromBuf[index][EE_DELAY] = interpd[dc390_eepromBuf[index][EE_DELAY]];
|
|
|
|
for (i = 0; i < 0x40; i++, ptr++)
|
|
wval += *ptr;
|
|
|
|
/* no Tekram EEprom found */
|
|
if (wval != 0x1234) {
|
|
int speed;
|
|
|
|
printk(KERN_INFO "DC390_init: No EEPROM found! Trying default settings ...\n");
|
|
|
|
/*
|
|
* XXX(hch): bogus, because we might have tekram and
|
|
* non-tekram hbas in a single machine.
|
|
*/
|
|
dc390_fill_with_defaults();
|
|
|
|
speed = dc390_clock_speed[tmscsim[1]];
|
|
printk(KERN_INFO "DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz), "
|
|
"DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n",
|
|
tmscsim[0], tmscsim[1], speed / 10, speed % 10,
|
|
(u8)tmscsim[2], (u8)tmscsim[3], tmscsim[4], 2 << (tmscsim[4]), tmscsim[5]);
|
|
}
|
|
}
|
|
|
|
static void __devinit dc390_init_hw(struct dc390_acb *pACB, u8 index)
|
|
{
|
|
struct Scsi_Host *shost = pACB->pScsiHost;
|
|
u8 dstate;
|
|
|
|
/* Disable SCSI bus reset interrupt */
|
|
DC390_write8(CtrlReg1, DIS_INT_ON_SCSI_RST | shost->this_id);
|
|
|
|
if (pACB->Gmode2 & RST_SCSI_BUS) {
|
|
dc390_ResetSCSIBus(pACB);
|
|
udelay(1000);
|
|
shost->last_reset = jiffies + HZ/2 +
|
|
HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
|
|
}
|
|
|
|
pACB->ACBFlag = 0;
|
|
|
|
/* Reset Pending INT */
|
|
DC390_read8(INT_Status);
|
|
|
|
/* 250ms selection timeout */
|
|
DC390_write8(Scsi_TimeOut, SEL_TIMEOUT);
|
|
|
|
/* Conversion factor = 0 , 40MHz clock */
|
|
DC390_write8(Clk_Factor, CLK_FREQ_40MHZ);
|
|
|
|
/* NOP cmd - clear command register */
|
|
DC390_write8(ScsiCmd, NOP_CMD);
|
|
|
|
/* Enable Feature and SCSI-2 */
|
|
DC390_write8(CtrlReg2, EN_FEATURE+EN_SCSI2_CMD);
|
|
|
|
/* Fast clock */
|
|
DC390_write8(CtrlReg3, FAST_CLK);
|
|
|
|
/* Negation */
|
|
DC390_write8(CtrlReg4, pACB->glitch_cfg | /* glitch eater */
|
|
(dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) ?
|
|
NEGATE_REQACKDATA : 0);
|
|
|
|
/* Clear Transfer Count High: ID */
|
|
DC390_write8(CtcReg_High, 0);
|
|
DC390_write8(DMA_Cmd, DMA_IDLE_CMD);
|
|
DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
|
|
DC390_write32(DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
|
|
|
|
dstate = DC390_read8(DMA_Status);
|
|
DC390_write8(DMA_Status, dstate);
|
|
}
|
|
|
|
static int __devinit dc390_probe_one(struct pci_dev *pdev,
|
|
const struct pci_device_id *id)
|
|
{
|
|
struct dc390_acb *pACB;
|
|
struct Scsi_Host *shost;
|
|
unsigned long io_port;
|
|
int error = -ENODEV, i;
|
|
|
|
if (pci_enable_device(pdev))
|
|
goto out;
|
|
|
|
pci_set_master(pdev);
|
|
|
|
error = -ENOMEM;
|
|
if (disable_clustering)
|
|
driver_template.use_clustering = DISABLE_CLUSTERING;
|
|
shost = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb));
|
|
if (!shost)
|
|
goto out_disable_device;
|
|
|
|
pACB = (struct dc390_acb *)shost->hostdata;
|
|
memset(pACB, 0, sizeof(struct dc390_acb));
|
|
|
|
dc390_check_eeprom(pdev, dc390_adapterCnt);
|
|
dc390_eeprom_override(dc390_adapterCnt);
|
|
|
|
io_port = pci_resource_start(pdev, 0);
|
|
|
|
shost->this_id = dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID];
|
|
shost->io_port = io_port;
|
|
shost->n_io_port = 0x80;
|
|
shost->irq = pdev->irq;
|
|
shost->base = io_port;
|
|
shost->unique_id = io_port;
|
|
shost->last_reset = jiffies;
|
|
|
|
pACB->pScsiHost = shost;
|
|
pACB->IOPortBase = (u16) io_port;
|
|
pACB->IRQLevel = pdev->irq;
|
|
|
|
shost->max_id = 8;
|
|
|
|
if (shost->max_id - 1 ==
|
|
dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID])
|
|
shost->max_id--;
|
|
|
|
if (dc390_eepromBuf[dc390_adapterCnt][EE_MODE2] & LUN_CHECK)
|
|
shost->max_lun = 8;
|
|
else
|
|
shost->max_lun = 1;
|
|
|
|
pACB->pFreeSRB = pACB->SRB_array;
|
|
pACB->SRBCount = MAX_SRB_CNT;
|
|
pACB->AdapterIndex = dc390_adapterCnt;
|
|
pACB->TagMaxNum =
|
|
2 << dc390_eepromBuf[dc390_adapterCnt][EE_TAG_CMD_NUM];
|
|
pACB->Gmode2 = dc390_eepromBuf[dc390_adapterCnt][EE_MODE2];
|
|
|
|
for (i = 0; i < pACB->SRBCount-1; i++)
|
|
pACB->SRB_array[i].pNextSRB = &pACB->SRB_array[i+1];
|
|
pACB->SRB_array[pACB->SRBCount-1].pNextSRB = NULL;
|
|
pACB->pTmpSRB = &pACB->TmpSRB;
|
|
|
|
pACB->sel_timeout = SEL_TIMEOUT;
|
|
pACB->glitch_cfg = EATER_25NS;
|
|
pACB->pdev = pdev;
|
|
|
|
if (!request_region(io_port, shost->n_io_port, "tmscsim")) {
|
|
printk(KERN_ERR "DC390: register IO ports error!\n");
|
|
goto out_host_put;
|
|
}
|
|
|
|
/* Reset Pending INT */
|
|
DC390_read8_(INT_Status, io_port);
|
|
|
|
if (request_irq(pdev->irq, do_DC390_Interrupt, IRQF_SHARED,
|
|
"tmscsim", pACB)) {
|
|
printk(KERN_ERR "DC390: register IRQ error!\n");
|
|
goto out_release_region;
|
|
}
|
|
|
|
dc390_init_hw(pACB, dc390_adapterCnt);
|
|
|
|
dc390_adapterCnt++;
|
|
|
|
pci_set_drvdata(pdev, shost);
|
|
|
|
error = scsi_add_host(shost, &pdev->dev);
|
|
if (error)
|
|
goto out_free_irq;
|
|
scsi_scan_host(shost);
|
|
return 0;
|
|
|
|
out_free_irq:
|
|
free_irq(pdev->irq, pACB);
|
|
out_release_region:
|
|
release_region(io_port, shost->n_io_port);
|
|
out_host_put:
|
|
scsi_host_put(shost);
|
|
out_disable_device:
|
|
pci_disable_device(pdev);
|
|
out:
|
|
return error;
|
|
}
|
|
|
|
/**
|
|
* dc390_remove_one - Called to remove a single instance of the adapter.
|
|
*
|
|
* @dev: The PCI device to remove.
|
|
*/
|
|
static void __devexit dc390_remove_one(struct pci_dev *dev)
|
|
{
|
|
struct Scsi_Host *scsi_host = pci_get_drvdata(dev);
|
|
unsigned long iflags;
|
|
struct dc390_acb* pACB = (struct dc390_acb*) scsi_host->hostdata;
|
|
u8 bval;
|
|
|
|
scsi_remove_host(scsi_host);
|
|
|
|
spin_lock_irqsave(scsi_host->host_lock, iflags);
|
|
pACB->ACBFlag = RESET_DEV;
|
|
bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
|
|
DC390_write8 (CtrlReg1, bval); /* disable interrupt */
|
|
if (pACB->Gmode2 & RST_SCSI_BUS)
|
|
dc390_ResetSCSIBus(pACB);
|
|
spin_unlock_irqrestore(scsi_host->host_lock, iflags);
|
|
|
|
free_irq(scsi_host->irq, pACB);
|
|
release_region(scsi_host->io_port, scsi_host->n_io_port);
|
|
|
|
pci_disable_device(dev);
|
|
scsi_host_put(scsi_host);
|
|
pci_set_drvdata(dev, NULL);
|
|
}
|
|
|
|
static struct pci_device_id tmscsim_pci_tbl[] = {
|
|
{ PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD53C974,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl);
|
|
|
|
static struct pci_driver dc390_driver = {
|
|
.name = "tmscsim",
|
|
.id_table = tmscsim_pci_tbl,
|
|
.probe = dc390_probe_one,
|
|
.remove = __devexit_p(dc390_remove_one),
|
|
};
|
|
|
|
static int __init dc390_module_init(void)
|
|
{
|
|
if (!disable_clustering)
|
|
printk(KERN_INFO "DC390: clustering now enabled by default. If you get problems load\n"
|
|
"\twith \"disable_clustering=1\" and report to maintainers\n");
|
|
|
|
if (tmscsim[0] == -1 || tmscsim[0] > 15) {
|
|
tmscsim[0] = 7;
|
|
tmscsim[1] = 4;
|
|
tmscsim[2] = PARITY_CHK_ | TAG_QUEUEING_;
|
|
tmscsim[3] = MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION;
|
|
tmscsim[4] = 2;
|
|
tmscsim[5] = 10;
|
|
printk (KERN_INFO "DC390: Using safe settings.\n");
|
|
}
|
|
|
|
return pci_module_init(&dc390_driver);
|
|
}
|
|
|
|
static void __exit dc390_module_exit(void)
|
|
{
|
|
pci_unregister_driver(&dc390_driver);
|
|
}
|
|
|
|
module_init(dc390_module_init);
|
|
module_exit(dc390_module_exit);
|
|
|
|
#ifndef MODULE
|
|
static int __init dc390_setup (char *str)
|
|
{
|
|
int ints[8],i, im;
|
|
|
|
get_options(str, ARRAY_SIZE(ints), ints);
|
|
im = ints[0];
|
|
|
|
if (im > 6) {
|
|
printk (KERN_NOTICE "DC390: ignore extra params!\n");
|
|
im = 6;
|
|
}
|
|
|
|
for (i = 0; i < im; i++)
|
|
tmscsim[i] = ints[i+1];
|
|
/* dc390_checkparams (); */
|
|
return 1;
|
|
}
|
|
|
|
__setup("tmscsim=", dc390_setup);
|
|
#endif
|