On Monday 21 March 2016 03:31:49 Finn Thain wrote:
This patch series has more macro elimination and some tweaks to the
DMA hooks so that all the wrapper drivers can share the same core
DMA algorithm. This resolves the major discrepancies between the two
core drivers, which relate to code conditional on the REAL_DMA and
PSEUDO_DMA macros.
After all the wrapper drivers agree on the DMA hook api, the core driver
fork gets resolved. NCR5380.c is adopted by atari_scsi and sun3_scsi and
atari_NCR5380.c is then deleted.
Historically, the 5380 drivers suffered from over-use of conditional
compilation, which caused the compile-time configuration space to explode,
leading to core driver code that was practically untestable, unmaintainable
and difficult to reason about. It also prevented driver modules from
sharing object code.
Along with REAL_DMA, REAL_DMA_POLL and PSEUDO_DMA, most of the remaining
macros are also eradicated, such as CONFIG_SCSI_GENERIC_NCR53C400,
SUPPORT_TAGS, DONT_USE_INTR, AUTOPROBE_IRQ and BIOSPARAM.
Also in this patch series, some duplicated documentation is removed and
the PDMA implementation in mac_scsi finally gets fixed.
This patch series was tested by exercising the dmx3191d and mac_scsi modules
on suitable hardware. Michael has tested atari_scsi on an Atari Falcon.
Help with driver testing on ISA cards is sought as I don't have such
hardware. Likewise RiscPC ecards and Sun 3.
Tested on HP C2502 (53C400A chip), Canon FG2-5202 (53C400 chip) and DTC-3181L
(DTCT-436P chip) ISA cards - everything works fine!
Thanks.
Tested-by: Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx>
HP C2502:
scsi host2: Generic NCR5380/NCR53C400 SCSI, io_port 0x280, n_io_port 16, base 0x0, irq 0, can_queue 16, cmd_per_lun 2, sg_tablesize 128, this_id 7, flags { }, options { }
Canon FG2-5202:
scsi host2: Generic NCR5380/NCR53C400 SCSI, io_port 0x0, n_io_port 0, base 0xd8000, irq 0, can_queue 16, cmd_per_lun 2, sg_tablesize 128, this_id 7, flags { }, options { }
DTC-3181L:
scsi host2: Generic NCR5380/NCR53C400 SCSI, io_port 0x240, n_io_port 16, base 0x0, irq 0, can_queue 16, cmd_per_lun 2, sg_tablesize 128, this_id 7, flags { }, options { }
--
Ondrej Zary
--
To unsubscribe from this list: send the line "unsubscribe linux-m68k" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
