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Introduce genfb_ops genfb_borrow callback to allow the bus frontend to

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lend mappings to drm.
This commit is contained in:
jmcneill 2009-02-15 18:41:49 +00:00
parent 6a4d107f7d
commit ec798a6e6c
3 changed files with 40 additions and 7 deletions
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22
sys/dev/pci/genfb_pci.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: genfb_pci.c,v 1.12 2009/02/14 20:33:58 jmcneill Exp $ */
/* $NetBSD: genfb_pci.c,v 1.13 2009/02/15 18:41:49 jmcneill Exp $ */
/*-
* Copyright (c) 2007 Michael Lorenz
@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: genfb_pci.c,v 1.12 2009/02/14 20:33:58 jmcneill Exp $");
__KERNEL_RCSID(0, "$NetBSD: genfb_pci.c,v 1.13 2009/02/15 18:41:49 jmcneill Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -81,9 +81,9 @@ static void pci_genfb_attach(struct device *, struct device *, void *);
static int pci_genfb_ioctl(void *, void *, u_long, void *, int,
struct lwp *);
static paddr_t pci_genfb_mmap(void *, void *, off_t, int);
static int pci_genfb_borrow(void *, bus_addr_t, bus_space_handle_t *);
static int pci_genfb_drm_print(void *, const char *);
CFATTACH_DECL(genfb_pci, sizeof(struct pci_genfb_softc),
pci_genfb_match, pci_genfb_attach, NULL, NULL);
@ -163,6 +163,7 @@ pci_genfb_attach(struct device *parent, struct device *self, void *aux)
ops.genfb_ioctl = pci_genfb_ioctl;
ops.genfb_mmap = pci_genfb_mmap;
ops.genfb_borrow = pci_genfb_borrow;
if (genfb_attach(&sc->sc_gen, &ops) == 0) {
@ -290,3 +291,18 @@ pci_genfb_mmap(void *v, void *vs, off_t offset, int prot)
return -1;
}
int
pci_genfb_borrow(void *opaque, bus_addr_t addr, bus_space_handle_t *hdlp)
{
struct pci_genfb_softc *sc = opaque;
if (sc == NULL)
return 0;
if (!sc->sc_gen.sc_fboffset)
return 0;
if (sc->sc_gen.sc_fboffset != addr)
return 0;
*hdlp = sc->sc_memh;
return 1;
}

19
sys/dev/wsfb/genfb.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: genfb.c,v 1.18 2009/02/14 20:33:59 jmcneill Exp $ */
/* $NetBSD: genfb.c,v 1.19 2009/02/15 18:41:49 jmcneill Exp $ */
/*-
* Copyright (c) 2007 Michael Lorenz
@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: genfb.c,v 1.18 2009/02/14 20:33:59 jmcneill Exp $");
__KERNEL_RCSID(0, "$NetBSD: genfb.c,v 1.19 2009/02/15 18:41:49 jmcneill Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -83,6 +83,8 @@ struct wsdisplay_accessops genfb_accessops = {
NULL /* scroll */
};
static struct genfb_softc *genfb_softc = NULL;
void
genfb_init(struct genfb_softc *sc)
{
@ -207,6 +209,9 @@ genfb_attach(struct genfb_softc *sc, struct genfb_ops *ops)
j += 3;
}
if (genfb_softc == NULL)
genfb_softc = sc;
aa.console = console;
aa.scrdata = &sc->sc_screenlist;
aa.accessops = &genfb_accessops;
@ -420,3 +425,13 @@ genfb_is_console(void)
{
return genfb_cnattach_called;
}
int
genfb_borrow(bus_addr_t addr, bus_space_handle_t *hdlp)
{
struct genfb_softc *sc = genfb_softc;
if (sc && sc->sc_ops.genfb_borrow)
return sc->sc_ops.genfb_borrow(sc, addr, hdlp);
return 0;
}

6
sys/dev/wsfb/genfbvar.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: genfbvar.h,v 1.7 2009/02/14 20:33:59 jmcneill Exp $ */
/* $NetBSD: genfbvar.h,v 1.8 2009/02/15 18:41:49 jmcneill Exp $ */
/*-
* Copyright (c) 2007 Michael Lorenz
@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: genfbvar.h,v 1.7 2009/02/14 20:33:59 jmcneill Exp $");
__KERNEL_RCSID(0, "$NetBSD: genfbvar.h,v 1.8 2009/02/15 18:41:49 jmcneill Exp $");
#ifndef GENFBVAR_H
#define GENFBVAR_H
@ -48,6 +48,7 @@ __KERNEL_RCSID(0, "$NetBSD: genfbvar.h,v 1.7 2009/02/14 20:33:59 jmcneill Exp $"
struct genfb_ops {
int (*genfb_ioctl)(void *, void *, u_long, void *, int, struct lwp *);
paddr_t (*genfb_mmap)(void *, void *, off_t, int);
int (*genfb_borrow)(void *, bus_addr_t, bus_space_handle_t *);
};
struct genfb_colormap_callback {
@ -79,5 +80,6 @@ void genfb_cnattach(void);
int genfb_is_console(void);
void genfb_init(struct genfb_softc *);
int genfb_attach(struct genfb_softc *, struct genfb_ops *);
int genfb_borrow(bus_addr_t, bus_space_handle_t *);
#endif /* GENFBVAR_H */