save/restore functions for aliagp.

Very similar to other agp suspend functions.

ok kettenis@, deraadt@.

diff --git a/sys/dev/pci/agp_ali.c b/sys/dev/pci/agp_ali.c
index 078e8c1..e41091d 100644 (file)
--- a/sys/dev/pci/agp_ali.c
+++ b/sys/dev/pci/agp_ali.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: agp_ali.c,v 1.11 2010/04/08 00:23:53 tedu Exp $       */
+/*     $OpenBSD: agp_ali.c,v 1.12 2010/08/07 18:15:38 oga Exp $        */
 /*     $NetBSD: agp_ali.c,v 1.2 2001/09/15 00:25:00 thorpej Exp $      */
 
 
@@ -56,9 +56,14 @@ struct agp_ali_softc {
        pcitag_t                 asc_tag;
        bus_addr_t               asc_apaddr;
        bus_size_t               asc_apsize;
+       pcireg_t                 asc_attbase;
+       pcireg_t                 asc_tlbctrl;
 };
 
 void   agp_ali_attach(struct device *, struct device *, void *);
+int    agp_ali_activate(struct device *, int);
+void   agp_ali_save(struct agp_ali_softc *);
+void   agp_ali_restore(struct agp_ali_softc *);
 int    agp_ali_probe(struct device *, void *, void *);
 bus_size_t agp_ali_get_aperture(void *);
 int    agp_ali_set_aperture(void *sc, bus_size_t);
@@ -67,7 +72,8 @@ void  agp_ali_unbind_page(void *, bus_addr_t);
 void   agp_ali_flush_tlb(void *);
 
 struct cfattach aliagp_ca = {
-        sizeof(struct agp_ali_softc), agp_ali_probe, agp_ali_attach
+       sizeof(struct agp_ali_softc), agp_ali_probe, agp_ali_attach,
+       NULL, agp_ali_activate
 };
 
 struct cfdriver aliagp_cd = {
@@ -172,6 +178,45 @@ agp_ali_detach(struct agp_softc *sc)
 }
 #endif
 
+int
+agp_ali_activate(struct device *arg, int act)
+{
+       struct agp_ali_softc *asc = (struct agp_ali_softc *)arg;
+
+       switch (act) {
+       case DVACT_SUSPEND:
+               agp_ali_save(asc);
+               break;
+       case DVACT_RESUME:
+               agp_ali_restore(asc);
+               break;
+       }
+
+       return (0);
+}
+
+void
+agp_ali_save(struct agp_ali_softc *asc)
+{
+       asc->asc_attbase = pci_conf_read(asc->asc_pc, asc->asc_tag,
+           AGP_ALI_ATTBASE);
+       asc->asc_tlbctrl = pci_conf_read(asc->asc_pc, asc->asc_tag,
+           AGP_ALI_TLBCTRL);
+}
+
+void
+agp_ali_restore(struct agp_ali_softc *asc)
+{
+
+       /* Install the gatt and aperture size. */
+       pci_conf_write(asc->asc_pc, asc->asc_tag, AGP_ALI_ATTBASE,
+           asc->asc_attbase);
+       
+       /* Enable the TLB. */
+       pci_conf_write(asc->asc_pc, asc->asc_tag, AGP_ALI_TLBCTRL,
+           asc->asc_tlbctrl);
+}
+
 #define M 1024*1024
 
 static const u_int32_t agp_ali_table[] = {