linux/drivers/scsi/wd33c93.h, branch v2.6.39-rc2

SCSI host lock push-down

2010-11-16T21:33:23Z

Move the mid-layer's ->queuecommand() invocation from being locked with the host lock to being unlocked to facilitate speeding up the critical path for drivers who don't need this lock taken anyway. The patch below presents a simple SCSI host lock push-down as an equivalent transformation. No locking or other behavior should change with this patch. All existing bugs and locking orders are preserved. Additionally, add one parameter to queuecommand, struct Scsi_Host * and remove one parameter from queuecommand, void (*done)(struct scsi_cmnd *) Scsi_Host* is a convenient pointer that most host drivers need anyway, and 'done' is redundant to struct scsi_cmnd->scsi_done. Minimal code disturbance was attempted with this change. Most drivers needed only two one-line modifications for their host lock push-down. Signed-off-by: Jeff Garzik Acked-by: James Bottomley Signed-off-by: Linus Torvalds

[SCSI] wd33c93: Kill empty wd33c93_release()

2010-05-02T19:54:15Z

wd33c93_release() has been empty since ages, and sgiwd93.c no longer calls it since its conversion to a proper platform driver 2 years ago. Also remove the callers in the m68k wd33c93 shims. Signed-off-by: Geert Uytterhoeven Cc: Ralf Baechle Signed-off-by: James Bottomley

Spelling fix: explicitly

2007-10-19T21:22:55Z

From: Jean Delvare Signed-off-by: Jean Delvare Signed-off-by: Adrian Bunk

[SCSI] wd33c93: Fast SCSI with WD33C93B

2007-02-16T15:22:11Z

Attached are patches, which help to utilize more of the WD33C93B SCSI controller's capabilities. 1) Added/changed all the necessary code to enable Burst Mode DMA. Only Single Byte DMA was used before. 2) Added/changed all the necessary code to enable Fast-10 SCSI transfers. 3) The original driver inadvertently used a transfer period of 1000-800ns (the lowest possible transfer rate) for asynchronous data transfers, instead of the (configurable) default period intended for this purpose, if the target responded to a SDTR not with a Reject-message, but with a zero-SDTR. This issue was fixed. Moreover, in case of a Reject the driver used the default-period's initialization-value instead of its (maybe smaller) current value. The missing assignment was added. 4) The driver's commandline- and proc-file-interface was augmented to handle the new options properly. The WD33C93 manual, found at http://www.datasheet.in/datasheet-html/W/D/3/WD33C93B_WesternDigital.pdf.html, was very helpful. Signed-off-by: peter fuerst Signed-off-by: James Bottomley

Remove obsolete #include

2006-06-30T17:25:36Z

Signed-off-by: Jörn Engel Signed-off-by: Adrian Bunk

Linux-2.6.12-rc2

2005-04-16T22:20:36Z

Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!