Re: Have my PA8800 back online...

[Helge Deller <deller@gmx.de>]

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On 10.12.2017 00:49, John David Anglin wrote:
> On 2017-12-09, at 4:03 PM, Helge Deller wrote:
> 
>> Can you please try attached patch which disables the serial MUX and ATI card?
>> If it works for you and if we backport it to all kernels and if we revert palo to use ttyS0 for all machines we might be good.
> 
> I hacked on the change but I couldn't get it to work.  As far as I can tell, the quirks aren't being called.
> Tried EARLY, HEADER and FINAL.  I think the ids are correct.

Strange. The attached patch does work for me on panama up until boot.
Haven't tested what lspci reports afterwards...

[    1.832294] LBA 0:7: PCI host bridge to bus 0000:e0
[    1.832497] pci_bus 0000:e0: root bus resource [io  0x60000-0x6ffff] (bus address [0x0000-0xffff])
[    1.833005] pci_bus 0000:e0: root bus resource [mem 0xfffffffff0000000-0xfffffffffe77ffff] (bus address [0xf0000000-0xfe77ffff])
[    1.840028] pci_bus 0000:e0: root bus resource [bus e0-e7]
     1.844276] subsystem_vendor = 0x103c, subsystem_device =0x1291
[    1.848022] pci 0000:e0:01.0: Hiding Diva built-in AUX serial device
     1.849136] subsystem_vendor = 0x103c, subsystem_device =0x1292
[    1.852023] pci 0000:e0:02.0: Hiding Diva built-in ATI card.
....

Helge

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diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
index a25fed52f7e9..dbb4158cf098 100644
--- a/drivers/parisc/lba_pci.c
+++ b/drivers/parisc/lba_pci.c
@@ -1692,3 +1692,45 @@ void lba_set_iregs(struct parisc_device *lba, u32 ibase, u32 imask)
 	iounmap(base_addr);
 }
 
+
+/*
+ * The design of the Diva management card in rp34x0 machines (rp3410, rp3440)
+ * seems rushed, so that many built-in components simply don't work.
+ * The following quirks disable the serial AUX port and the built-in ATI RV100
+ * Radeon 7000 graphics card which both don't have any external connectors and
+ * thus are useless, and even worse, e.g. the AUX ports occupies ttyS0 and
+ * as such makes those machines the only PARISC machines on which we can't
+ * use ttyS0 as boot console.
+ */
+static void quirk_diva_ati_card(struct pci_dev *dev)
+{
+	printk("subsystem_vendor = 0x%x, subsystem_device =0x%x\n",
+		dev->subsystem_vendor, dev->subsystem_device);
+
+	/* subsystem IDs are from Diva */
+	if (dev->subsystem_vendor != PCI_VENDOR_ID_HP ||
+	    dev->subsystem_device != 0x1292)
+		return;
+
+	dev_info(&dev->dev, "Hiding Diva built-in ATI card.");
+	dev->device = 0;
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_QY,
+	quirk_diva_ati_card);
+
+static void quirk_diva_aux_disable(struct pci_dev *dev)
+{
+	printk("subsystem_vendor = 0x%x, subsystem_device =0x%x\n",
+		dev->subsystem_vendor, dev->subsystem_device);
+
+	/* subsystem IDs are from Diva */
+	if (dev->subsystem_vendor != PCI_VENDOR_ID_HP ||
+	    dev->subsystem_device != 0x1291)
+		return;
+
+	dev_info(&dev->dev, "Hiding Diva built-in AUX serial device");
+	dev->device = 0;
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_DIVA_AUX,
+	quirk_diva_aux_disable);
+