svn commit: r245112 - head/sys/mips/atheros

[Monthadar Al Jaberi]

Author: monthadar
Date: Sun Jan  6 20:50:31 2013
New Revision: 245112
URL: http://svnweb.freebsd.org/changeset/base/245112

Log:
  Mips Atheros AR71XX: make PCI base slot configurable through hints.
  
  * Mikrotik RouterBoard 433AH have PCI slot 18 wired to INT0 on the PCI Bus.
    This is different from e.g. Atheros PB42 and Ubiquiti boards.
  * Check for hint hint.pcib.0.baseslot=X, where X is number of base slot;
  * If hint not supplied print a warning and use default AR71XX_PCI_BASE_SLOT;
  
  PR:           kern/174978
  Approved by:  adrian (mentor)

Modified:
  head/sys/mips/atheros/ar71xx_pci.c

Modified: head/sys/mips/atheros/ar71xx_pci.c
==============================================================================
--- head/sys/mips/atheros/ar71xx_pci.c  Sun Jan  6 19:27:28 2013        
(r245111)
+++ head/sys/mips/atheros/ar71xx_pci.c  Sun Jan  6 20:50:31 2013        
(r245112)
@@ -81,6 +81,7 @@ struct ar71xx_pci_softc {
        device_t                sc_dev;
 
        int                     sc_busno;
+       int                     sc_baseslot;
        struct rman             sc_mem_rman;
        struct rman             sc_irq_rman;
 
@@ -395,6 +396,16 @@ ar71xx_pci_attach(device_t dev)
                AR71XX_PCI_IRQ_END) != 0)
                panic("ar71xx_pci_attach: failed to set up IRQ rman");
 
+       /*
+        * Check if there is a base slot hint. Otherwise use default value.
+        */
+       if (resource_int_value(device_get_name(dev),
+           device_get_unit(dev), "baseslot", &sc->sc_baseslot) != 0) {
+               device_printf(dev,
+                   "%s: missing hint '%s', default to AR71XX_PCI_BASE_SLOT\n",
+                   __func__, "baseslot");
+               sc->sc_baseslot = AR71XX_PCI_BASE_SLOT;
+       }
 
        ATH_WRITE_REG(AR71XX_PCI_INTR_STATUS, 0);
        ATH_WRITE_REG(AR71XX_PCI_INTR_MASK, 0);
@@ -648,11 +659,13 @@ ar71xx_pci_maxslots(device_t dev)
 static int
 ar71xx_pci_route_interrupt(device_t pcib, device_t device, int pin)
 {
-       if (pci_get_slot(device) < AR71XX_PCI_BASE_SLOT)
+       struct ar71xx_pci_softc *sc = device_get_softc(pcib);
+       
+       if (pci_get_slot(device) < sc->sc_baseslot)
                panic("%s: PCI slot %d is less then AR71XX_PCI_BASE_SLOT",
                    __func__, pci_get_slot(device));
 
-       return (pci_get_slot(device) - AR71XX_PCI_BASE_SLOT);
+       return (pci_get_slot(device) - sc->sc_baseslot);
 }
 
 static device_method_t ar71xx_pci_methods[] = {
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