Re: [PATCH 2.6.23]ata_piix: SATA 2port controller port map fix

[Jeff Garzik]

Jason Gaston wrote:
This patch adds a port map for ICH9 and ICH8 SATA controllers that have only 2 
ports available in that mode.
Signed-off-by:  Jason Gaston <[EMAIL PROTECTED]>

--- linux-2.6.23/drivers/ata/ata_piix.c.orig    2007-10-09 13:31:38.000000000 
-0700
+++ linux-2.6.23/drivers/ata/ata_piix.c 2007-10-11 15:55:19.000000000 -0700
@@ -131,6 +131,7 @@
        ich8_sata_ahci          = 9,
        piix_pata_mwdma         = 10,   /* PIIX3 MWDMA only */
        tolapai_sata_ahci       = 11,
+       ich9_2port_sata         = 12,
 
 	/* constants for mapping table */
        P0                      = 0,  /* port 0 */
@@ -239,19 +240,19 @@
        /* SATA Controller 1 IDE (ICH8) */
        { 0x8086, 0x2820, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
        /* SATA Controller 2 IDE (ICH8) */
-       { 0x8086, 0x2825, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
+       { 0x8086, 0x2825, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich9_2port_sata },
        /* Mobile SATA Controller IDE (ICH8M) */
        { 0x8086, 0x2828, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
        /* SATA Controller IDE (ICH9) */
        { 0x8086, 0x2920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
        /* SATA Controller IDE (ICH9) */
-       { 0x8086, 0x2921, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
+       { 0x8086, 0x2921, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich9_2port_sata },
        /* SATA Controller IDE (ICH9) */
-       { 0x8086, 0x2926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
+       { 0x8086, 0x2926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich9_2port_sata },
        /* SATA Controller IDE (ICH9M) */
-       { 0x8086, 0x2928, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
+       { 0x8086, 0x2928, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich9_2port_sata },
        /* SATA Controller IDE (ICH9M) */
-       { 0x8086, 0x292d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
+       { 0x8086, 0x292d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich9_2port_sata },
        /* SATA Controller IDE (ICH9M) */
        { 0x8086, 0x292e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
        /* SATA Controller IDE (Tolapai) */
@@ -456,6 +457,18 @@
         },
 };
 
+static const struct piix_map_db ich9_2port_map_db = {
+        .mask = 0x3,
+        .port_enable = 0x3,
+        .map = {
+                /* PM   PS   SM   SS       MAP */
+                {  P0,  NA,  P1,  NA }, /* 00b */
+                {  RV,  RV,  RV,  RV }, /* 01b */
+                {  RV,  RV,  RV,  RV }, /* 10b */
+                {  RV,  RV,  RV,  RV },
+        },
+};

this was full of spaces, and should be converted to tabs (I did this 
manually)

In the future, make sure to run your patch through 
scripts/checkpatch.pl.  Some of that script's complaints are a bit 
insane, but most are good.

 static const struct piix_map_db *piix_map_db_table[] = {
        [ich5_sata]             = &ich5_map_db,
        [ich6_sata]             = &ich6_map_db,
@@ -463,6 +476,7 @@
        [ich6m_sata_ahci]       = &ich6m_map_db,
        [ich8_sata_ahci]        = &ich8_map_db,
        [tolapai_sata_ahci]     = &tolapai_map_db,
+       [ich9_2port_sata]       = &ich9_2port_map_db,
 };
 
 static struct ata_port_info piix_port_info[] = {
@@ -587,6 +601,17 @@
                .udma_mask      = ATA_UDMA6,
                .port_ops       = &piix_sata_ops,
        },
+
+       /* ich9_2port_sata: 12: */

changed this to

        [ich9_2port_sata] =

since we have started using the (C99? gcc?) method of initializing 
piix_port_info[] array entries based on the given index, rather than 
simply noting the index in a comment and depending on the order of other 
entries not to change.

        Jeff



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