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Add a driver for the Apple Uninorth AGP host bridge found in all PowerPC

Browse Source 
Macintoshes with an AGP bus.
This commit is contained in:
Nathan Whitehorn 2010-10-31 18:27:05 +00:00
parent c4bcebed17
commit 50fd2a5b9c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=214603
9 changed files with 338 additions and 12 deletions
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1
sys/conf/files.powerpc
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@ -22,6 +22,7 @@ dev/adb/adb_kbd.c optional adb
dev/adb/adb_mouse.c optional adb
dev/adb/adb_hb_if.m optional adb
dev/adb/adb_if.m optional adb
dev/agp/agp_apple.c optional agp powermac
dev/cfi/cfi_bus_fdt.c optional cfi fdt
dev/fb/fb.c optional sc
dev/fdt/fdt_powerpc.c optional fdt

4
sys/conf/options.powerpc
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@ -23,3 +23,7 @@ PSIM
SC_OFWFB opt_ofwfb.h
OFWCONS_POLL_HZ opt_ofw.h
# AGP debugging support
AGP_DEBUG opt_agp.h

34
sys/dev/agp/agp.c
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@ -219,13 +219,16 @@ agp_generic_attach(device_t dev)
* Find and map the aperture, RF_SHAREABLE for DRM but not RF_ACTIVE
* because the kernel doesn't need to map it.
*/
if (sc->as_aperture_rid == 0)
sc->as_aperture_rid = AGP_APBASE;
sc->as_aperture = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&sc->as_aperture_rid, RF_SHAREABLE);
if (!sc->as_aperture)
return ENOMEM;
if (sc->as_aperture_rid != -1) {
if (sc->as_aperture_rid == 0)
sc->as_aperture_rid = AGP_APBASE;
sc->as_aperture = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&sc->as_aperture_rid, RF_SHAREABLE);
if (!sc->as_aperture)
return ENOMEM;
}
/*
* Work out an upper bound for agp memory allocation. This
@ -272,8 +275,9 @@ agp_free_res(device_t dev)
{
struct agp_softc *sc = device_get_softc(dev);
bus_release_resource(dev, SYS_RES_MEMORY, sc->as_aperture_rid,
sc->as_aperture);
if (sc->as_aperture != NULL)
bus_release_resource(dev, SYS_RES_MEMORY, sc->as_aperture_rid,
sc->as_aperture);
mtx_destroy(&sc->as_lock);
agp_flush_cache();
}
@ -729,7 +733,10 @@ agp_info_user(device_t dev, agp_info *info)
info->bridge_id = pci_get_devid(dev);
info->agp_mode =
pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
info->aper_base = rman_get_start(sc->as_aperture);
if (sc->as_aperture)
info->aper_base = rman_get_start(sc->as_aperture);
else
info->aper_base = 0;
info->aper_size = AGP_GET_APERTURE(dev) >> 20;
info->pg_total = info->pg_system = sc->as_maxmem >> AGP_PAGE_SHIFT;
info->pg_used = sc->as_allocated >> AGP_PAGE_SHIFT;
@ -876,6 +883,8 @@ agp_mmap(struct cdev *kdev, vm_ooffset_t offset, vm_paddr_t *paddr,
if (offset > AGP_GET_APERTURE(dev))
return -1;
if (sc->as_aperture == NULL)
return -1;
*paddr = rman_get_start(sc->as_aperture) + offset;
return 0;
}
@ -917,8 +926,11 @@ agp_get_info(device_t dev, struct agp_info *info)
info->ai_mode =
pci_read_config(dev, agp_find_caps(dev) + AGP_STATUS, 4);
info->ai_aperture_base = rman_get_start(sc->as_aperture);
info->ai_aperture_size = rman_get_size(sc->as_aperture);
if (sc->as_aperture != NULL)
info->ai_aperture_base = rman_get_start(sc->as_aperture);
else
info->ai_aperture_base = 0;
info->ai_aperture_size = AGP_GET_APERTURE(dev);
info->ai_memory_allowed = sc->as_maxmem;
info->ai_memory_used = sc->as_allocated;
}

302
sys/dev/agp/agp_apple.c Normal file
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@ -0,0 +1,302 @@
/*-
* Copyright (c) 2010 Nathan Whitehorn
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_bus.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <machine/resource.h>
#include <dev/agp/agppriv.h>
#include <dev/agp/agpreg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <vm/vm.h>
#include <vm/vm_object.h>
#include <vm/pmap.h>
#define UNIN_AGP_GART_BASE 0x8c
#define UNIN_AGP_BASE_ADDR 0x90
#define UNIN_AGP_GART_CONTROL 0x94
#define UNIN_AGP_GART_INVAL 0x00000001
#define UNIN_AGP_GART_ENABLE 0x00000100
#define UNIN_AGP_GART_2XRESET 0x00010000
#define UNIN_AGP_U3_GART_PERFRD 0x00080000
struct agp_apple_softc {
struct agp_softc agp;
uint32_t aperture;
struct agp_gatt *gatt;
int u3;
int needs_2x_reset;
};
static int
agp_apple_probe(device_t dev)
{
if (resource_disabled("agp", device_get_unit(dev)))
return (ENXIO);
if (pci_get_class(dev) != PCIC_BRIDGE
|| pci_get_subclass(dev) != PCIS_BRIDGE_HOST)
return (ENXIO);
if (agp_find_caps(dev) == 0)
return (ENXIO);
if (pci_get_class(dev) != PCIC_BRIDGE
|| pci_get_subclass(dev) != PCIS_BRIDGE_HOST)
return (ENXIO);
switch (pci_get_devid(dev)) {
case 0x0020106b:
case 0x0027106b:
device_set_desc(dev, "Apple UniNorth AGP Bridge");
return (BUS_PROBE_DEFAULT);
case 0x002d106b:
device_set_desc(dev, "Apple UniNorth 1.5 AGP Bridge");
return (BUS_PROBE_DEFAULT);
case 0x0034106b:
device_set_desc(dev, "Apple UniNorth 2 AGP Bridge");
return (BUS_PROBE_DEFAULT);
case 0x004b106b:
case 0x0058106b:
case 0x0059106b:
device_set_desc(dev, "Apple U3 AGP Bridge");
return (BUS_PROBE_DEFAULT);
case 0x0066106b:
device_set_desc(dev, "Apple Intrepid AGP Bridge");
return (BUS_PROBE_DEFAULT);
}
return (ENXIO);
}
static int
agp_apple_attach(device_t dev)
{
struct agp_apple_softc *sc = device_get_softc(dev);
int error;
/* Record quirks */
sc->needs_2x_reset = 0;
sc->u3 = 0;
switch (pci_get_devid(dev)) {
case 0x0020106b:
case 0x0027106b:
sc->needs_2x_reset = 1;
break;
case 0x004b106b:
case 0x0058106b:
case 0x0059106b:
sc->u3 = 1;
break;
}
/* Set the aperture bus address base (must be 0) */
pci_write_config(dev, UNIN_AGP_BASE_ADDR, 0, 4);
agp_set_aperture_resource(dev, -1);
error = agp_generic_attach(dev);
if (error)
return (error);
sc->aperture = 256*1024*1024;
for (sc->aperture = 256*1024*1024; sc->aperture >= 4*1024*1024;
sc->aperture /= 2) {
sc->gatt = agp_alloc_gatt(dev);
if (sc->gatt)
break;
}
if (sc->aperture < 4*1024*1024) {
agp_generic_detach(dev);
return ENOMEM;
}
/* Install the gatt. */
AGP_SET_APERTURE(dev, sc->aperture);
/* XXX: U3 scratch page? */
/* Enable the aperture and TLB. */
AGP_FLUSH_TLB(dev);
return (0);
}
static int
agp_apple_detach(device_t dev)
{
struct agp_apple_softc *sc = device_get_softc(dev);
agp_free_cdev(dev);
/* Disable the aperture and TLB */
pci_write_config(dev, UNIN_AGP_GART_CONTROL, UNIN_AGP_GART_INVAL, 4);
pci_write_config(dev, UNIN_AGP_GART_CONTROL, 0, 4);
if (sc->needs_2x_reset) {
pci_write_config(dev, UNIN_AGP_GART_CONTROL,
UNIN_AGP_GART_2XRESET, 4);
pci_write_config(dev, UNIN_AGP_GART_CONTROL, 0, 4);
}
AGP_SET_APERTURE(dev, 0);
agp_free_gatt(sc->gatt);
agp_free_res(dev);
return 0;
}
static uint32_t
agp_apple_get_aperture(device_t dev)
{
struct agp_apple_softc *sc = device_get_softc(dev);
return (sc->aperture);
}
static int
agp_apple_set_aperture(device_t dev, uint32_t aperture)
{
struct agp_apple_softc *sc = device_get_softc(dev);
/*
* Check for a multiple of 4 MB and make sure it is within the
* programmable range.
*/
if (aperture % (4*1024*1024)
|| aperture < 4*1024*1024
|| aperture > ((sc->u3) ? 512 : 256)*1024*1024)
return EINVAL;
/* The aperture value is a multiple of 4 MB */
aperture /= (4*1024*1024);
pci_write_config(dev, UNIN_AGP_GART_BASE,
(sc->gatt->ag_physical & 0xfffff000) | aperture, 4);
return (0);
}
static int
agp_apple_bind_page(device_t dev, vm_offset_t offset, vm_offset_t physical)
{
struct agp_apple_softc *sc = device_get_softc(dev);
if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
return EINVAL;
sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical;
__asm __volatile("dcbst 0,%0; sync" ::
"r"(&sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT]) : "memory");
return (0);
}
static int
agp_apple_unbind_page(device_t dev, vm_offset_t offset)
{
struct agp_apple_softc *sc = device_get_softc(dev);
if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
return EINVAL;
sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0;
__asm __volatile("dcbst 0,%0; sync" ::
"r"(&sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT]) : "memory");
return (0);
}
static void
agp_apple_flush_tlb(device_t dev)
{
struct agp_apple_softc *sc = device_get_softc(dev);
uint32_t cntrl = UNIN_AGP_GART_ENABLE;
if (sc->u3)
cntrl |= UNIN_AGP_U3_GART_PERFRD;
pci_write_config(dev, UNIN_AGP_GART_CONTROL,
cntrl | UNIN_AGP_GART_INVAL, 4);
pci_write_config(dev, UNIN_AGP_GART_CONTROL, cntrl, 4);
if (sc->needs_2x_reset) {
pci_write_config(dev, UNIN_AGP_GART_CONTROL,
cntrl | UNIN_AGP_GART_2XRESET, 4);
pci_write_config(dev, UNIN_AGP_GART_CONTROL, cntrl, 4);
}
}
static device_method_t agp_apple_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, agp_apple_probe),
DEVMETHOD(device_attach, agp_apple_attach),
DEVMETHOD(device_detach, agp_apple_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
/* AGP interface */
DEVMETHOD(agp_get_aperture, agp_apple_get_aperture),
DEVMETHOD(agp_set_aperture, agp_apple_set_aperture),
DEVMETHOD(agp_bind_page, agp_apple_bind_page),
DEVMETHOD(agp_unbind_page, agp_apple_unbind_page),
DEVMETHOD(agp_flush_tlb, agp_apple_flush_tlb),
DEVMETHOD(agp_enable, agp_generic_enable),
DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory),
DEVMETHOD(agp_free_memory, agp_generic_free_memory),
DEVMETHOD(agp_bind_memory, agp_generic_bind_memory),
DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory),
{ 0, 0 }
};
static driver_t agp_apple_driver = {
"agp",
agp_apple_methods,
sizeof(struct agp_apple_softc),
};
static devclass_t agp_devclass;
DRIVER_MODULE(agp_apple, hostb, agp_apple_driver, agp_devclass, 0, 0);
MODULE_DEPEND(agp_apple, agp, 1, 1, 1);
MODULE_DEPEND(agp_apple, pci, 1, 1, 1);

1
sys/modules/Makefile
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@ -631,6 +631,7 @@ _xe= xe
.endif
.if ${MACHINE_CPUARCH} == "powerpc"
_agp= agp
_an= an
_bm= bm
_cpufreq= cpufreq

5
sys/modules/agp/Makefile
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@ -11,9 +11,12 @@ SRCS+= agp_i810.c agp_intel.c agp_via.c agp_sis.c agp_ali.c agp_amd.c \
.if ${MACHINE} == "i386"
SRCS+= agp_amd64.c
.endif
.if ${MACHINE_CPUARCH} == "amd64"
.if ${MACHINE_CPUARCH} == "amd64"
SRCS+= agp_amd64.c agp_i810.c agp_via.c
.endif
.if ${MACHINE_CPUARCH} == "powerpc"
SRCS+= agp_apple.c
.endif
SRCS+= device_if.h bus_if.h agp_if.h pci_if.h
SRCS+= opt_agp.h opt_bus.h
MFILES= kern/device_if.m kern/bus_if.m dev/agp/agp_if.m dev/pci/pci_if.m

1
sys/powerpc/conf/GENERIC
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@ -84,6 +84,7 @@ device cpufreq
# Standard busses
device pci
device agp
# ATA and ATAPI devices
device ata

1
sys/powerpc/conf/GENERIC64
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@ -83,6 +83,7 @@ device cpufreq
# Standard busses
device pci
device agp
# ATA and ATAPI devices
device ata

1
sys/powerpc/conf/NOTES
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@ -30,6 +30,7 @@ device cpufreq
# Standard busses
device pci
device agp
device bm # Apple BMAC (Big Mac Ethernet)
device kiic # Apple Keywest I2C Controller