Re: [PATCH] 2.4.30 PicoPower IRQ router

[Sune Mølgaard <sune@molgaard.org>]

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@molgaard.org
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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