Index: svwsata.c
===================================================================
RCS file: /cvsroot/src/sys/dev/pci/svwsata.c,v
retrieving revision 1.14
diff -p -r1.14 svwsata.c
*** svwsata.c	2 Jul 2012 18:15:48 -0000	1.14
--- svwsata.c	4 Jul 2012 20:13:24 -0000
*************** __KERNEL_RCSID(0, "$NetBSD: svwsata.c,v 
*** 21,26 ****
--- 21,27 ----
  
  #include <sys/param.h>
  #include <sys/systm.h>
+ #include <sys/kmem.h>
  
  #include <dev/ata/atareg.h>
  #include <dev/ata/satareg.h>
*************** svwsata_chip_map(struct pciide_softc *sc
*** 144,152 ****
  		sc->sc_wdcdev.sc_atac.atac_dma_cap = 2;
  		sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
  	}
! 
! 	sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray;
! 	sc->sc_wdcdev.sc_atac.atac_nchannels = 4;
  	sc->sc_wdcdev.sc_atac.atac_set_modes = sata_setup_channel;
  
  	/* We can use SControl and SStatus to probe for drives. */
--- 145,162 ----
  		sc->sc_wdcdev.sc_atac.atac_dma_cap = 2;
  		sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
  	}
! 	if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SERVERWORKS_FRODO4_SATA) {
! 		/*
! 		 * Frodo4 has 8 ports.  Frodo8 has 4 ports.  ???
! 		 */
! 		sc->sc_wdcdev.sc_atac.atac_nchannels = 8;
! 		sc->sc_wdcdev.sc_atac.atac_channels = 
! 		    kmem_alloc(sizeof(*sc->sc_wdcdev.sc_atac.atac_channels) *
! 			       sc->sc_wdcdev.sc_atac.atac_nchannels, KM_SLEEP);
! 	} else {
! 		sc->sc_wdcdev.sc_atac.atac_nchannels = 4;
! 		sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray;
! 	}
  	sc->sc_wdcdev.sc_atac.atac_set_modes = sata_setup_channel;
  
  	/* We can use SControl and SStatus to probe for drives. */
*************** svwsata_chip_map(struct pciide_softc *sc
*** 191,196 ****
--- 201,211 ----
  	}
  }
  
+ /*
+  * detach should free atac_channels if 
+  *      sc->sc_wdcdev.sc_atac.atac_channels == sc->wdc_chanarray
+  */
+ 
  static void
  svwsata_mapreg_dma(struct pciide_softc *sc, const struct pci_attach_args *pa)
  {
*************** svwsata_mapreg_dma(struct pciide_softc *
*** 217,223 ****
  	 */
  
  	sc->sc_dma_iot = sc->sc_ba5_st;
! 	for (chan = 0; chan < 4; chan++) {
  		pc = &sc->pciide_channels[chan];
  		for (reg = 0; reg < IDEDMA_NREGS; reg++) {
  			size = 4;
--- 232,238 ----
  	 */
  
  	sc->sc_dma_iot = sc->sc_ba5_st;
! 	for (chan = 0; chan < sc->sc_wdcdev.sc_atac.atac_nchannels; chan++) {
  		pc = &sc->pciide_channels[chan];
  		for (reg = 0; reg < IDEDMA_NREGS; reg++) {
  			size = 4;