Skip to contentSkip to conversation

PCI serial card (VScom): BARs+Offset mix

DISCUSSION Gunther Mayer 2 participants 2 messages Jan 4, 2001

lore
Share & tools
lore
#0 lore raw

Hi Tim,

this mapping must be hardcoded like I did for Timedia serial:

serial.c: get_pci_port
e.g.

	/* Timedia/SUNIX uses a mixture of BARs and offsets */
        if(dev->vendor == PCI_VENDOR_ID_TIMEDIA )  /* 0x1409 */
                switch(idx) {
                        case 0: base_idx=0;
                                break;
                        case 1: base_idx=0; offset=8;
                                break;
                        case 2: base_idx=1;
                                break;
                        case 3: base_idx=1; offset=8;
                                break;
                        case 4: /* BAR 2*/
                        case 5: /* BAR 3 */
                        case 6: /* BAR 4*/
                        case 7: base_idx=idx-2; /* BAR 5*/
                }

---> /* VScom uses another mixture */
if(VScom)
YOUR CODE HERE PLEASE
...

This maps:  idx -> (base_idx, offset),
where idx:      goes from 0 to number_of_serial_ports,

base_idx: BAR,
offset: added to the BAR IO-address to find actual port.

BAR mapping is set by a flag, here you need "SPCI_FL_BASE_TABLE":
e.g. { PCI_VENDOR_ID_TIMEDIA, PCI_DEVICE_ID_TIMEDIA_1889,

                PCI_VENDOR_ID_TIMEDIA, PCI_ANY_ID,
                SPCI_FL_BASE_TABLE, 1, 921600,
                0, 0, pci_timedia_fn },

Footnote: This entry is fixed up at detect time and num_ports set by pci_timedia_fn,
Ted fixed my table to a nice collapsed data structure for subids.

Hope this helps,
Gunther
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected]
Please read the FAQ at http://www.tux.org/lkml/

#1 lore raw
Quoted 1 line · Gunther Mayer

this mapping must be hardcoded like I did for Timedia serial:

I was thinking about using another flag, like SPCI_FL_SEE_BELOW_TOO, to mean 'look at the next entry too'. Then I could just have both entries there one after the other.

Thoughts?

Tim.
*/