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SubjectRE: linux-2.4.28 released
Date
From
Hi,

It seems that combined mode does not work at linux-2.4.28 about
the ata_piix driver of the Intel 82801EB/82801ER SATA controller
of Intel 82801EB/82801ER. In using combined mode,
I think that the following patches are required. Is this right?

diff -urN linux-2.4.28.orig/drivers/ide/pci/piix.c linux-2.4.28/drivers/ide/pci/piix.c
--- linux-2.4.28.orig/drivers/ide/pci/piix.c 2004-11-17 20:54:21.000000000 +0900
+++ linux-2.4.28/drivers/ide/pci/piix.c 2004-11-18 16:40:10.000000000 +0900
@@ -143,6 +143,7 @@
p += sprintf(p, "\n Intel ");
switch(dev->device) {
case PCI_DEVICE_ID_INTEL_82801EB_1:
+ case PCI_DEVICE_ID_INTEL_ESB_3:
p += sprintf(p, "PIIX4 SATA 150 ");
break;
case PCI_DEVICE_ID_INTEL_82801BA_8:
@@ -281,6 +282,7 @@

switch(dev->device) {
case PCI_DEVICE_ID_INTEL_82801EB_1:
+ case PCI_DEVICE_ID_INTEL_ESB_3:
mode = 3;
break;
/* UDMA 100 capable */
@@ -881,7 +883,10 @@
{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 18},
#endif
{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 19},
- { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 20},
+#ifdef CONFIG_BLK_DEV_IDE_SATA
+ { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 20},
+#endif
+ { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 21},
{ 0, },
};

diff -urN linux-2.4.28.orig/drivers/ide/pci/piix.h linux-2.4.28/drivers/ide/pci/piix.h
--- linux-2.4.28.orig/drivers/ide/pci/piix.h 2004-04-14 22:05:30.000000000 +0900
+++ linux-2.4.28/drivers/ide/pci/piix.h 2004-11-18 16:40:10.000000000 +0900
@@ -321,6 +321,20 @@
.extra = 0,
},{ /* 20 */
.vendor = PCI_VENDOR_ID_INTEL,
+ .device = PCI_DEVICE_ID_INTEL_ESB_3,
+ .name = "ICH5-SATA",
+ .init_setup = init_setup_piix,
+ .init_chipset = init_chipset_piix,
+ .init_iops = NULL,
+ .init_hwif = init_hwif_piix,
+ .init_dma = init_dma_piix,
+ .channels = 2,
+ .autodma = AUTODMA,
+ .enablebits = {{0x41,0x80,0x80}, {0x43,0x80,0x80}},
+ .bootable = ON_BOARD,
+ .extra = 0,
+ },{ /* 21 */
+ .vendor = PCI_VENDOR_ID_INTEL,
.device = PCI_DEVICE_ID_INTEL_ICH6_2,
.name = "ICH6",
.init_setup = init_setup_piix,
diff -urN linux-2.4.28.orig/drivers/pci/quirks.c linux-2.4.28/drivers/pci/quirks.c
--- linux-2.4.28.orig/drivers/pci/quirks.c 2004-11-17 20:54:21.000000000 +0900
+++ linux-2.4.28/drivers/pci/quirks.c 2004-11-18 16:34:48.000000000 +0900
@@ -719,6 +719,79 @@
}
}

+#ifdef CONFIG_SCSI_SATA
+static void __init quirk_intel_ide_combined(struct pci_dev *pdev)
+{
+ u8 prog, comb, tmp;
+ int ich = 0;
+
+ /*
+ * Narrow down to Intel SATA PCI devices.
+ */
+ switch (pdev->device) {
+ /* PCI ids taken from drivers/scsi/ata_piix.c */
+ case 0x24d1:
+ case 0x24df:
+ case 0x25a3:
+ case 0x25b0:
+ ich = 5;
+ break;
+ case 0x2651:
+ case 0x2652:
+ case 0x2653:
+ ich = 6;
+ break;
+ default:
+ /* we do not handle this PCI device */
+ return;
+ }
+
+ /*
+ * Read combined mode register.
+ */
+ pci_read_config_byte(pdev, 0x90, &tmp); /* combined mode reg */
+
+ if (ich == 5) {
+ tmp &= 0x6; /* interesting bits 2:1, PATA primary/secondary */
+ if (tmp == 0x4) /* bits 10x */
+ comb = (1 << 0); /* SATA port 0, PATA port 1 */
+ else if (tmp == 0x6) /* bits 11x */
+ comb = (1 << 2); /* PATA port 0, SATA port 1 */
+ else
+ return; /* not in combined mode */
+ } else {
+ WARN_ON(ich != 6);
+ tmp &= 0x3; /* interesting bits 1:0 */
+ if (tmp & (1 << 0))
+ comb = (1 << 2); /* PATA port 0, SATA port 1 */
+ else if (tmp & (1 << 1))
+ comb = (1 << 0); /* SATA port 0, PATA port 1 */
+ else
+ return; /* not in combined mode */
+ }
+
+ /*
+ * Read programming interface register.
+ * (Tells us if it's legacy or native mode)
+ */
+ pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
+
+ /* if SATA port is in native mode, we're ok. */
+ if (prog & comb)
+ return;
+
+ /* SATA port is in legacy mode. Reserve port so that
+ * IDE driver does not attempt to use it. If request_region
+ * fails, it will be obvious at boot time, so we don't bother
+ * checking return values.
+ */
+ if (comb == (1 << 0))
+ request_region(0x1f0, 8, "libata"); /* port 0 */
+ else
+ request_region(0x170, 8, "libata"); /* port 1 */
+}
+#endif /* CONFIG_SCSI_SATA */
+
/*
* The main table of quirks.
*/
@@ -808,6 +881,14 @@
{ PCI_FIXUP_HEADER, PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc },
{ PCI_FIXUP_HEADER, PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc },

+#ifdef CONFIG_SCSI_SATA
+ /* Fixup BIOSes that configure Parallel ATA (PATA / IDE) and
+ * Serial ATA (SATA) into the same PCI ID.
+ */
+ { PCI_FIXUP_FINAL, PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
+ quirk_intel_ide_combined },
+#endif /* CONFIG_SCSI_SATA */
+
{ 0 }
};

diff -urN linux-2.4.28.orig/drivers/scsi/ata_piix.c linux-2.4.28/drivers/scsi/ata_piix.c
--- linux-2.4.28.orig/drivers/scsi/ata_piix.c 2004-11-17 20:54:21.000000000 +0900
+++ linux-2.4.28/drivers/scsi/ata_piix.c 2004-11-18 16:23:45.000000000 +0900
@@ -622,8 +622,7 @@
port_info[pata_chan] = &piix_port_info[ich5_pata];
n_ports++;

- printk(KERN_ERR DRV_NAME ": combined mode not supported\n");
- return -ENODEV;
+ printk(KERN_WARNING DRV_NAME ": combined mode detected\n");
}

return ata_pci_init_one(pdev, port_info, n_ports);
diff -urN linux-2.4.28.orig/drivers/scsi/libata-core.c linux-2.4.28/drivers/scsi/libata-core.c
--- linux-2.4.28.orig/drivers/scsi/libata-core.c 2004-11-17 20:54:21.000000000 +0900
+++ linux-2.4.28/drivers/scsi/libata-core.c 2004-11-18 15:48:49.000000000 +0900
@@ -3457,14 +3457,28 @@
goto err_out;

if (legacy_mode) {
- if (!request_region(0x1f0, 8, "libata"))
- printk(KERN_WARNING "ata: 0x1f0 IDE port busy\n");
- else
+ if (!request_region(0x1f0, 8, "libata")) {
+ struct resource *conflict, res;
+ res.start = 0x1f0;
+ res.end = 0x1f0 + 8 - 1;
+ conflict = ____request_resource(&ioport_resource, &res);
+ if (!strcmp(conflict->name, "libata"))
+ legacy_mode |= (1 << 0);
+ else
+ printk(KERN_WARNING "ata: 0x1f0 IDE port busy\n");
+ } else
legacy_mode |= (1 << 0);

- if (!request_region(0x170, 8, "libata"))
- printk(KERN_WARNING "ata: 0x170 IDE port busy\n");
- else
+ if (!request_region(0x170, 8, "libata")) {
+ struct resource *conflict, res;
+ res.start = 0x170;
+ res.end = 0x170 + 8 - 1;
+ conflict = ____request_resource(&ioport_resource, &res);
+ if (!strcmp(conflict->name, "libata"))
+ legacy_mode |= (1 << 1);
+ else
+ printk(KERN_WARNING "ata: 0x170 IDE port busy\n");
+ } else
legacy_mode |= (1 << 1);
}

diff -urN linux-2.4.28.orig/include/linux/ioport.h linux-2.4.28/include/linux/ioport.h
--- linux-2.4.28.orig/include/linux/ioport.h 2003-11-29 03:26:21.000000000 +0900
+++ linux-2.4.28/include/linux/ioport.h 2004-11-18 15:50:45.000000000 +0900
@@ -85,6 +85,7 @@

extern int check_resource(struct resource *root, unsigned long, unsigned long);
extern int request_resource(struct resource *root, struct resource *new);
+extern struct resource * ____request_resource(struct resource *root, struct resource *new);
extern int release_resource(struct resource *new);
extern int allocate_resource(struct resource *root, struct resource *new,
unsigned long size,
diff -urN linux-2.4.28.orig/kernel/ksyms.c linux-2.4.28/kernel/ksyms.c
--- linux-2.4.28.orig/kernel/ksyms.c 2004-02-18 22:36:32.000000000 +0900
+++ linux-2.4.28/kernel/ksyms.c 2004-11-18 15:53:19.000000000 +0900
@@ -448,6 +448,7 @@
#endif

/* resource handling */
+EXPORT_SYMBOL_GPL(____request_resource); /* may disappear in a few months */
EXPORT_SYMBOL(request_resource);
EXPORT_SYMBOL(release_resource);
EXPORT_SYMBOL(allocate_resource);
diff -urN linux-2.4.28.orig/kernel/resource.c linux-2.4.28/kernel/resource.c
--- linux-2.4.28.orig/kernel/resource.c 2003-11-29 03:26:21.000000000 +0900
+++ linux-2.4.28/kernel/resource.c 2004-11-18 15:53:55.000000000 +0900
@@ -166,6 +166,16 @@
return conflict ? -EBUSY : 0;
}

+struct resource *____request_resource(struct resource *root, struct resource *new)
+{
+ struct resource *conflict;
+
+ write_lock(&resource_lock);
+ conflict = __request_resource(root, new);
+ write_unlock(&resource_lock);
+ return conflict;
+}
+
int release_resource(struct resource *old)
{
int retval;
-
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