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authorBob Tracy <rct@gherkin.frus.com>2004-05-03 23:12:32 -0500
committerJames Bottomley <jejb@mulgrave.(none)>2004-05-03 23:12:32 -0500
commit4e629872da4ed6690c907270c48c8b418c3bf694 (patch)
tree462374af2c4769da6f9def3fa73b4941e4c59237 /Documentation
parent96a3b84728bd73e1ecb5ee1cc4322ce885fe44e3 (diff)
downloadhistory-4e629872da4ed6690c907270c48c8b418c3bf694.tar.gz
[PATCH] sym53c500_cs PCMCIA SCSI driver (round 5)
Fifth attempt at a PCMCIA SCSI driver for the Symbios 53c500 controller. This version has all the cleanup Christoph has requested to date, including removal of support for the obsolete (in 2.6) proc_info functionality. Support for additional sysfs class device attributes has been added: two are read-only (irq, ioport), one is read-write (fast_pio). The read-write attribute is a per-instance flag indicating the PIO speed of the particular HBA: valid values are 1 (enabled -- default) and 0 (disabled).
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/scsi/00-INDEX2
-rw-r--r--Documentation/scsi/sym53c500_cs.txt23
2 files changed, 25 insertions, 0 deletions
diff --git a/Documentation/scsi/00-INDEX b/Documentation/scsi/00-INDEX
index bc2e4bdf6f1229..f9cb5bdcce4183 100644
--- a/Documentation/scsi/00-INDEX
+++ b/Documentation/scsi/00-INDEX
@@ -62,6 +62,8 @@ scsi_mid_low_api.txt
- info on API between SCSI layer and low level drivers
st.txt
- info on scsi tape driver
+sym53c500_cs.txt
+ - info on PCMCIA driver for Symbios Logic 53c500 based adapters
sym53c8xx_2.txt
- info on second generation driver for sym53c8xx based adapters
tmscsim.txt
diff --git a/Documentation/scsi/sym53c500_cs.txt b/Documentation/scsi/sym53c500_cs.txt
new file mode 100644
index 00000000000000..75febcf9298ca0
--- /dev/null
+++ b/Documentation/scsi/sym53c500_cs.txt
@@ -0,0 +1,23 @@
+The sym53c500_cs driver originated as an add-on to David Hinds' pcmcia-cs
+package, and was written by Tom Corner (tcorner@via.at). A rewrite was
+long overdue, and the current version addresses the following concerns:
+
+ (1) extensive kernel changes between 2.4 and 2.6.
+ (2) deprecated PCMCIA support outside the kernel.
+
+All the USE_BIOS code has been ripped out. It was never used, and could
+not have worked anyway. The USE_DMA code is likewise gone. Many thanks
+to YOKOTA Hiroshi (nsp_cs driver) and David Hinds (qlogic_cs driver) for
+the code fragments I shamelessly adapted for this work. Thanks also to
+Christoph Hellwig for his patient tutelage while I stumbled about.
+
+The Symbios Logic 53c500 chip was used in the "newer" (circa 1997) version
+of the New Media Bus Toaster PCMCIA SCSI controller. Presumably there are
+other products using this chip, but I've never laid eyes (much less hands)
+on one.
+
+Through the years, there have been a number of downloads of the pcmcia-cs
+version of this driver, and I guess it worked for those users. It worked
+for Tom Corner, and it works for me. Your mileage will probably vary.
+
+--Bob Tracy (rct@frus.com)