Re: [PATCH] 2.4.30 PicoPower IRQ router

From: Sune Mølgaard
Date: Wed Apr 27 2005 - 13:25:43 EST


Domen Puncer wrote:
On 26/04/05 21:00 +0200, Sune Mølgaard wrote:

Signed-off-by? And weird indentification, try to use tabs.


Signed-off-by Sune Molgaard sune@xxxxxxxxxxxx
Indentation was as per my own standard. Fixed below.

I really don't know about this, but existing code (2.6.x) uses
{read,write}_config_nybble which looks suspiciously similar.

As stated, David Hinds recommended this, and it works. My insight is limited.

return 0; missing

Thanks. Fixed below.

PCI_VENDOR_ID_?


Sorry. I was lazy and hardcoded it in. Fixed below.


Domen

Thanks for the input. Below follows an updated patch.

/Sune

--Begin patch--
diff -Npru linux-2.4.30/arch/i386/kernel/pci-irq.c \
linux/arch/i386/kernel/pci-irq.c
--- linux-2.4.30/arch/i386/kernel/pci-irq.c 2005-04-04 03:42:19.000000000 +0200
+++ linux/arch/i386/kernel/pci-irq.c 2005-04-27 19:58:14.391991544 +0200
@@ -157,6 +157,25 @@ static void write_config_nybble(struct p
}

/*
+ * PicoPower PT86C523
+ */
+
+static int pirq_pico_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
+{
+ outb(0x10+((pirq-1)>>1), 0x24);
+ return ((pirq-1)&1) ? (inb(0x26)>>4) : (inb(0x26)&0xf);
+}
+
+static int pirq_pico_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
+{
+ outb(0x10+((pirq-1)>>1), 0x24);
+ unsigned int x;
+ x = inb(0x26);
+ x = ((pirq-1)&1) ? ((x&0x0f)|(irq<<4)) : ((x&0xf0)|(irq));
+ outb(x,0x26);
+}
+
+/*
* ALI pirq entries are damn ugly, and completely undocumented.
* This has been figured out from pirq tables, and it's not a pretty
* picture.
@@ -609,6 +628,24 @@ static int pirq_bios_set(struct pci_dev

#endif

+static __init int pico_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
+{
+ switch(device)
+ {
+ case PCI_DEVICE_PICOPOWER_PT86C523:
+ r->name = "PicoPower PT86C523";
+ r->get = pirq_pico_get;
+ r->set = pirq_pico_set;
+ return 1;
+
+ case PCI_DEVICE_PICOPOWER_PT86C523BBP:
+ r->name = "PicoPower PT86C523 rev. BB+";
+ r->get = pirq_pico_get;
+ r->set = pirq_pico_set;
+ return 1;
+ }
+ return 0;
+}

static __init int intel_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
{
@@ -814,6 +851,7 @@ static __init int amd_router_probe(struc
}

static __initdata struct irq_router_handler pirq_routers[] = {
+ { PCI_VENDOR_ID_PICOPOWER, pico_router_probe },
{ PCI_VENDOR_ID_INTEL, intel_router_probe },
{ PCI_VENDOR_ID_AL, ali_router_probe },
{ PCI_VENDOR_ID_ITE, ite_router_probe },
diff -Npru linux-2.4.30/include/linux/pci_ids.h \
linux/include/linux/pci_ids.h
--- linux-2.4.30/include/linux/pci_ids.h 2005-04-04 03:42:20.000000000 +0200
+++ linux/include/linux/pci_ids.h 2005-04-27 20:04:12.195597128 +0200
@@ -119,6 +119,10 @@

/* Vendors and devices. Sort key: vendor first, device next. */

+#define PCI_VENDOR_ID_PICOPOWER 0x104c
+#define PCI_DEVICE_ID_PICOPOWER_PT86C523 0x0002
+#define PCI_DEVICE_ID_PICOPOWER_PT86C523BBP 0x8002
+
#define PCI_VENDOR_ID_DYNALINK 0x0675
#define PCI_DEVICE_ID_DYNALINK_IS64PH 0x1702

--End patch--

--
Thou shalt not commit adultery ... unless in the mood.
- W. C. Fields
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