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To: linux-kernel@vger.kernel.org Subject: Version 6.1.8 of the aic7xxx driver availalbe Date: Thu, 22 Mar 2001 18:30:50 -0700 From: "Justin T. Gibbs" <gibbs@scsiguy.com> As always, the latest version of this driver is availalbe here: http://people.FreeBSD.org/~gibbs/linux/ Complete CHANGELOG is now available at the above URL. I try to filter though LK as often as I can, but for best response, please email issues regarding this driver to me directly. Changes since 6.1.6: Change 168 on 2001/03/22 by gibbs@overdrive Bump version to 6.1.8. Change 167 on 2001/03/22 by gibbs@overdrive aic7xxx_linux.c: aic7xxx_linux.h: Add support for switching from full to basic command queuing. Flags in the ahc_linux_device structure indicate what kind of queuing to performed. In the past, we issued an ordered tag every 250 transactions. We now issue an ordered tag every 250 transactions issued without the device queue going empty. aic7xxx_proc.c: Use an unsigned long for total number of commands sent to a device. %q and %lld don't seem to work under Linux or I'd have used a uint64_t. Change 166 on 2001/03/22 by gibbs@overdrive aic7770.c: aic7xxx_pci.c: Don't map our interrupt until after we are fully setup to handle interrupts. Our interrupt line may be shared so an interrupt could occur at any time. aic7xxx.h: aic7xxx.c: Add support for switching from fully blown tagged queing to just using simple queue tags should the device reject an ordered tag. Remove per-target "current" disconnect and tag queuing enable flags. These should be per-device and are not referenced internally be the driver, so we let the OSM track this state if it needs to. Use SCSI-3 message terminology. Change 165 on 2001/03/19 by gibbs@overdrive aic7770.c: ahc_reset() leaves the card in a paused state. Re-arrange the code so we reset the chip earlier so we can avoid a manual pause during setup. Setup the controller without enabling card interrupts. aic7xxx.c: Fix a bug in ahc_lookup_phase_entry(). We never traversed past the first entry. This routine is only used in diagnostics so this had only a limited effect. Start out life with card interrupts disabled. The bus code will enable the interrupts once setup is complete and our handler is in place. Initialize our softc unit to -1 so that code such as ahc_linux_next_unit() can traverse the list looking for coliding unit numbers without tripping over entries that have not yet had their unit number set. Enhance ahc_dump_card_state(). OSMs should be able to rely on this to dump any controller specific data of interest. Most of the additional registers printed used to be printed in the FreeBSD timeout handler. Add a function pointer in our softc for a bus specific interrupt handler. This removes some dependencies on the PCI code so that bus attachments can be compiled as modules separate from the core. aic7xxx.reg: Use the naming for bit 5 of DFSTATUS in the data book, FIFOQWDEMP. aic7xxx.seq: In our idle loop, use an or instruction to set PRELOADEN rather than rewriting the contents of DMAPARAMS to DFCNTRL. The later may re-enable the DMA engine if the idle loop is called to complete the preload of at least one segment when a target disconnects on an S/G segment boundary but before we have completed fetching the next segment. This correts a hang, usually in message out phase, when this situation occurs. This bug has been here for a long time, so the situation is rare, but not impossible to reproduce. Wait for at least 8 bytes in the FIFO before testing to see if the DMA fetch of an SCB has stalled. The old code used FIFOEMP, which goes false on a single byte. Since we drain the FIFO 8 bytes at a time, using FIFOQWDEMP is safer. If a device happens to be exceptionally slow in asserting HDONE, our workaround for a stalled SCB dma can be triggered. Make this situation non-fatal by terminating our FIFO emptying should we complete the transfer. aic7xxx_inline.h: ahc_pci_intr() -> ahc->bus_intr() aic7xxx_pci.c: Setup ahc->bus_intr(). Enable board interrupts at the appropriate time. Change 164 on 2001/03/19 by gibbs@overdrive aic7xxx_linux.c: Format to 80 columns. Break after finding a matching entry in the token table during aic7xxx_setup. print the correct name of a function in a diagnostic. Change 163 on 2001/03/10 by gibbs@overdrive Bump version to 6.1.7. The too leanient interpretation of the seeprom signature could result in improper termination settings on some MBs, and this is a big enough bug to warant a new release. Change 162 on 2001/03/10 by gibbs@overdrive Handle cross builds. Change 161 on 2001/03/10 by gibbs@overdrive We now generate a header file for the db include under linux to handle the build on more distribution types. Change 160 on 2001/03/10 by gibbs@overdrive aic7xxx.h: Add a definition for the 3.X BIOS signature. aic7xxx_inline.h: We must setup queuestat before processing command complete interrupts in case target mode is enabled. aic7xxx_pci.c: Be more selective in the BIOS signatures we support. Some seeproms have a signature of 0xFFFF, so testing greater than 0x250 resulted in false positives. Change 159 on 2001/03/09 by gibbs@overdrive To be compatible with older kernels, our setup routine must be called aic7xxx_setup(). Change 158 on 2001/03/09 by gibbs@overdrive aicasm/Makefile: Play some games so we have a better chance of actually building on more systems. Change 157 on 2001/03/09 by gibbs@overdrive aic7770_linux.c: aic7xxx_linux.h: Adjust aic7770_map_int() to not rely on a passed in "shared" argument. We can now look at ahc->flags to see whether the interrupt source is edge or level. aic7xxx_linux.c: Only adjust our goal negotiation settings if the device is actually present. This prevents a disconnected lun that does not claim to support negotiations from messing up the settings for a successfully probed lun whose inquiry data properly reflects the abilities of the device. Set the device structure as releasable should the inquiry come back with anything other than lun connected. We should also do this if the device goes away as evidenced by a selection timeout, but as we can't know if this condition is persistant and there is no guarantee that the mid-layer will reissue the inquiry command we use to validate the device, I've simply added a comment this effect. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/