Re: Adaptec scsi driver OBSD 3.3 question

["J.D. Bronson" <jeff@xpec.com>]

At 12:16 PM 05/03/2003, Marco Peereboom wrote:
>The code is not verbose enough and it won't tell you what it did.
>
>Add a printf after /* Using memory mapping ... */ saying memory mapping
>enabled or something.
>The code will try to go back to IO mappings when it didn't work though.
>
>What I don't get is why is this such a big deal for you?
>What's wrong with IO mapping instead of memory mapping?
>
>/marco


Well I tried this idea, but since I know very little about code, it ended 
up panicing on boot and dropping to ddb>

                 if (ioh_valid) {
                         /*
                          * Do a quick test to see if memory mapped
                          * I/O is functioning correctly.
                          */
                         ahc->tag = iot;
                         ahc->bsh = ioh;
                         if (ahc_inb(ahc, HCNTRL) == 0xFF) {
                                 /* nope, use I/O mapping */
                                 ioh_valid = 0;
                         } else {
                                 /* Using memory mapping, disable I/O 
mapping */
  ---->                          printf("%s: Enabling Memory Mapping\n");
                                 command &= ~PCI_COMMAND_IO_ENABLE;
                                 ahc_pci_write_config(ahc->dev_softc,
                                                      PCI_COMMAND_STATUS_REG,
                                                      command, 4);
                         }

Did I make a typo?
Thanks for any continued help guys...Especially Marco!




-- 
J.D. Bronson
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