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Subject[PATCH] sata_promise: Port enumeration order - SATA 150 TX4, SATA 300 TX4
From: Milan Kupcevic <milan@physics.harvard.edu>

Fix Promise SATAII 150 TX4 (PDC40518) and Promise SATA 300 TX4
(PDC40718-GP) wrong port enumeration order that makes it (nearly)
impossible to deal with boot problems using two or more drives.

Signed-off-by: Milan Kupcevic <milan@physics.harvard.edu>
---
The current kernel driver assumes:

port 1 - scsi3
port 2 - scsi1
port 3 - scsi0
port 4 - scsi2

Having 4 hard drives connected to the controller grub recognizes the
port 1 connected drive as "(hd0)" but kernel recognizes the port 3
connected drive as scsi0:0:0:0 (/dev/sda). There is no clean way to make
it boot correctly.

sata_promise.c | 16 ++++++++++------
1 files changed, 10 insertions(+), 6 deletions(-)
diff -uprN ./drivers/scsi/sata_promise.c
../linux/drivers/scsi/sata_promise.c
--- ./drivers/scsi/sata_promise.c 2006-02-17 17:23:45.000000000 -0500
+++ ../linux/drivers/scsi/sata_promise.c 2006-02-24
19:35:16.000000000 -0500
@@ -707,14 +707,18 @@ static int pdc_ata_init_one (struct pci_

/* notice 4-port boards */
switch (board_idx) {
- case board_20319:
+ case board_20319: /* tx4 */
probe_ent->n_ports = 4;

- pdc_ata_setup_port(&probe_ent->port[2], base + 0x300);
- pdc_ata_setup_port(&probe_ent->port[3], base + 0x380);
-
- probe_ent->port[2].scr_addr = base + 0x600;
- probe_ent->port[3].scr_addr = base + 0x700;
+ pdc_ata_setup_port(&probe_ent->port[0], base + 0x380);
+ pdc_ata_setup_port(&probe_ent->port[1], base + 0x280);
+ pdc_ata_setup_port(&probe_ent->port[2], base + 0x200);
+ pdc_ata_setup_port(&probe_ent->port[3], base + 0x300);
+
+ probe_ent->port[0].scr_addr = base + 0x700;
+ probe_ent->port[1].scr_addr = base + 0x500;
+ probe_ent->port[2].scr_addr = base + 0x400;
+ probe_ent->port[3].scr_addr = base + 0x600;
break;
case board_2037x:
probe_ent->n_ports = 2;
--
Milan Kupcevic
System Administrator
Harvard University
Department of Physics

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