789 lines
19 KiB
C
789 lines
19 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c) 2005 John Baldwin <jhb@FreeBSD.org>
|
|
*
|
|
* 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>
|
|
/*
|
|
* Simple driver for PCI VGA display devices. Drivers such as agp(4) and
|
|
* drm(4) should attach as children of this device.
|
|
*
|
|
* XXX: The vgapci name is a hack until we somehow merge the isa vga driver
|
|
* in or rename it.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/rman.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/systm.h>
|
|
|
|
#if defined(__amd64__) || defined(__i386__)
|
|
#include <vm/vm.h>
|
|
#include <vm/pmap.h>
|
|
#endif
|
|
|
|
#include <dev/pci/pcireg.h>
|
|
#include <dev/pci/pcivar.h>
|
|
|
|
#include <compat/x86bios/x86bios.h> /* To re-POST the card. */
|
|
|
|
struct vga_resource {
|
|
struct resource *vr_res;
|
|
int vr_refs;
|
|
};
|
|
|
|
struct vga_pci_softc {
|
|
device_t vga_msi_child; /* Child driver using MSI. */
|
|
struct vga_resource vga_bars[PCIR_MAX_BAR_0 + 1];
|
|
struct vga_resource vga_bios;
|
|
};
|
|
|
|
SYSCTL_DECL(_hw_pci);
|
|
|
|
static struct vga_resource *lookup_res(struct vga_pci_softc *sc, int rid);
|
|
static struct resource *vga_pci_alloc_resource(device_t dev, device_t child,
|
|
int type, int *rid, rman_res_t start, rman_res_t end, rman_res_t count,
|
|
u_int flags);
|
|
static int vga_pci_release_resource(device_t dev, device_t child, int type,
|
|
int rid, struct resource *r);
|
|
|
|
int vga_pci_default_unit = -1;
|
|
SYSCTL_INT(_hw_pci, OID_AUTO, default_vgapci_unit, CTLFLAG_RDTUN,
|
|
&vga_pci_default_unit, -1, "Default VGA-compatible display");
|
|
|
|
int
|
|
vga_pci_is_boot_display(device_t dev)
|
|
{
|
|
int unit;
|
|
device_t pcib;
|
|
uint16_t config;
|
|
|
|
/* Check that the given device is a video card */
|
|
if ((pci_get_class(dev) != PCIC_DISPLAY &&
|
|
(pci_get_class(dev) != PCIC_OLD ||
|
|
pci_get_subclass(dev) != PCIS_OLD_VGA)))
|
|
return (0);
|
|
|
|
unit = device_get_unit(dev);
|
|
|
|
if (vga_pci_default_unit >= 0) {
|
|
/*
|
|
* The boot display device was determined by a previous
|
|
* call to this function, or the user forced it using
|
|
* the hw.pci.default_vgapci_unit tunable.
|
|
*/
|
|
return (vga_pci_default_unit == unit);
|
|
}
|
|
|
|
/*
|
|
* The primary video card used as a boot display must have the
|
|
* "I/O" and "Memory Address Space Decoding" bits set in its
|
|
* Command register.
|
|
*
|
|
* Furthermore, if the card is attached to a bridge, instead of
|
|
* the root PCI bus, the bridge must have the "VGA Enable" bit
|
|
* set in its Control register.
|
|
*/
|
|
|
|
pcib = device_get_parent(device_get_parent(dev));
|
|
if (device_get_devclass(device_get_parent(pcib)) ==
|
|
devclass_find("pci")) {
|
|
/*
|
|
* The parent bridge is a PCI-to-PCI bridge: check the
|
|
* value of the "VGA Enable" bit.
|
|
*/
|
|
config = pci_read_config(pcib, PCIR_BRIDGECTL_1, 2);
|
|
if ((config & PCIB_BCR_VGA_ENABLE) == 0)
|
|
return (0);
|
|
}
|
|
|
|
config = pci_read_config(dev, PCIR_COMMAND, 2);
|
|
if ((config & (PCIM_CMD_PORTEN | PCIM_CMD_MEMEN)) == 0)
|
|
return (0);
|
|
|
|
/*
|
|
* Disable interrupts until a chipset driver is loaded for
|
|
* this PCI device. Else unhandled display adapter interrupts
|
|
* might freeze the CPU.
|
|
*/
|
|
pci_write_config(dev, PCIR_COMMAND, config | PCIM_CMD_INTxDIS, 2);
|
|
|
|
/* This video card is the boot display: record its unit number. */
|
|
vga_pci_default_unit = unit;
|
|
device_set_flags(dev, 1);
|
|
|
|
return (1);
|
|
}
|
|
|
|
static void
|
|
vga_pci_reset(device_t dev)
|
|
{
|
|
int ps;
|
|
/*
|
|
* FLR is unsupported on GPUs so attempt a power-management reset by cycling
|
|
* the device in/out of D3 state.
|
|
* PCI spec says we can only go into D3 state from D0 state.
|
|
* Transition from D[12] into D0 before going to D3 state.
|
|
*/
|
|
ps = pci_get_powerstate(dev);
|
|
if (ps != PCI_POWERSTATE_D0 && ps != PCI_POWERSTATE_D3)
|
|
pci_set_powerstate(dev, PCI_POWERSTATE_D0);
|
|
if (pci_get_powerstate(dev) != PCI_POWERSTATE_D3)
|
|
pci_set_powerstate(dev, PCI_POWERSTATE_D3);
|
|
pci_set_powerstate(dev, ps);
|
|
}
|
|
|
|
void *
|
|
vga_pci_map_bios(device_t dev, size_t *size)
|
|
{
|
|
struct vga_resource *vr;
|
|
struct resource *res;
|
|
device_t pcib;
|
|
uint32_t rom_addr;
|
|
uint16_t config;
|
|
volatile unsigned char *bios;
|
|
int i, rid, found;
|
|
|
|
#if defined(__amd64__) || defined(__i386__)
|
|
if (vga_pci_is_boot_display(dev)) {
|
|
/*
|
|
* On x86, the System BIOS copy the default display
|
|
* device's Video BIOS at a fixed location in system
|
|
* memory (0xC0000, 128 kBytes long) at boot time.
|
|
*
|
|
* We use this copy for the default boot device, because
|
|
* the original ROM may not be valid after boot.
|
|
*/
|
|
|
|
*size = VGA_PCI_BIOS_SHADOW_SIZE;
|
|
return (pmap_mapbios(VGA_PCI_BIOS_SHADOW_ADDR, *size));
|
|
}
|
|
#endif
|
|
|
|
pcib = device_get_parent(device_get_parent(dev));
|
|
if (device_get_devclass(device_get_parent(pcib)) ==
|
|
devclass_find("pci")) {
|
|
/*
|
|
* The parent bridge is a PCI-to-PCI bridge: check the
|
|
* value of the "VGA Enable" bit.
|
|
*/
|
|
config = pci_read_config(pcib, PCIR_BRIDGECTL_1, 2);
|
|
if ((config & PCIB_BCR_VGA_ENABLE) == 0) {
|
|
config |= PCIB_BCR_VGA_ENABLE;
|
|
pci_write_config(pcib, PCIR_BRIDGECTL_1, config, 2);
|
|
}
|
|
}
|
|
|
|
switch(pci_read_config(dev, PCIR_HDRTYPE, 1)) {
|
|
case PCIM_HDRTYPE_BRIDGE:
|
|
rid = PCIR_BIOS_1;
|
|
break;
|
|
case PCIM_HDRTYPE_CARDBUS:
|
|
rid = 0;
|
|
break;
|
|
default:
|
|
rid = PCIR_BIOS;
|
|
break;
|
|
}
|
|
if (rid == 0)
|
|
return (NULL);
|
|
res = vga_pci_alloc_resource(dev, NULL, SYS_RES_MEMORY, &rid, 0,
|
|
~0, 1, RF_ACTIVE);
|
|
|
|
if (res == NULL) {
|
|
device_printf(dev, "vga_pci_alloc_resource failed\n");
|
|
return (NULL);
|
|
}
|
|
bios = rman_get_virtual(res);
|
|
*size = rman_get_size(res);
|
|
for (found = i = 0; i < hz; i++) {
|
|
found = (bios[0] == 0x55 && bios[1] == 0xaa);
|
|
if (found)
|
|
break;
|
|
pause("vgabios", 1);
|
|
}
|
|
if (found)
|
|
return (__DEVOLATILE(void *, bios));
|
|
if (bootverbose)
|
|
device_printf(dev, "initial ROM mapping failed -- resetting\n");
|
|
|
|
/*
|
|
* Enable ROM decode
|
|
*/
|
|
vga_pci_reset(dev);
|
|
rom_addr = pci_read_config(dev, rid, 4);
|
|
rom_addr &= 0x7ff;
|
|
rom_addr |= rman_get_start(res) | 0x1;
|
|
pci_write_config(dev, rid, rom_addr, 4);
|
|
vr = lookup_res(device_get_softc(dev), rid);
|
|
vga_pci_release_resource(dev, NULL, SYS_RES_MEMORY, rid,
|
|
vr->vr_res);
|
|
|
|
/*
|
|
* re-allocate
|
|
*/
|
|
res = vga_pci_alloc_resource(dev, NULL, SYS_RES_MEMORY, &rid, 0,
|
|
~0, 1, RF_ACTIVE);
|
|
if (res == NULL) {
|
|
device_printf(dev, "vga_pci_alloc_resource failed\n");
|
|
return (NULL);
|
|
}
|
|
bios = rman_get_virtual(res);
|
|
*size = rman_get_size(res);
|
|
for (found = i = 0; i < 3*hz; i++) {
|
|
found = (bios[0] == 0x55 && bios[1] == 0xaa);
|
|
if (found)
|
|
break;
|
|
pause("vgabios", 1);
|
|
}
|
|
if (found)
|
|
return (__DEVOLATILE(void *, bios));
|
|
device_printf(dev, "ROM mapping failed\n");
|
|
vr = lookup_res(device_get_softc(dev), rid);
|
|
vga_pci_release_resource(dev, NULL, SYS_RES_MEMORY, rid,
|
|
vr->vr_res);
|
|
return (NULL);
|
|
}
|
|
|
|
void
|
|
vga_pci_unmap_bios(device_t dev, void *bios)
|
|
{
|
|
struct vga_resource *vr;
|
|
int rid;
|
|
|
|
if (bios == NULL) {
|
|
return;
|
|
}
|
|
|
|
#if defined(__amd64__) || defined(__i386__)
|
|
if (vga_pci_is_boot_display(dev)) {
|
|
/* We mapped the BIOS shadow copy located at 0xC0000. */
|
|
pmap_unmapdev(bios, VGA_PCI_BIOS_SHADOW_SIZE);
|
|
|
|
return;
|
|
}
|
|
#endif
|
|
switch(pci_read_config(dev, PCIR_HDRTYPE, 1)) {
|
|
case PCIM_HDRTYPE_BRIDGE:
|
|
rid = PCIR_BIOS_1;
|
|
break;
|
|
case PCIM_HDRTYPE_CARDBUS:
|
|
rid = 0;
|
|
break;
|
|
default:
|
|
rid = PCIR_BIOS;
|
|
break;
|
|
}
|
|
if (rid == 0)
|
|
return;
|
|
/*
|
|
* Look up the PCIR_BIOS resource in our softc. It should match
|
|
* the address we returned previously.
|
|
*/
|
|
vr = lookup_res(device_get_softc(dev), rid);
|
|
KASSERT(vr->vr_res != NULL, ("vga_pci_unmap_bios: bios not mapped"));
|
|
KASSERT(rman_get_virtual(vr->vr_res) == bios,
|
|
("vga_pci_unmap_bios: mismatch"));
|
|
vga_pci_release_resource(dev, NULL, SYS_RES_MEMORY, rid,
|
|
vr->vr_res);
|
|
}
|
|
|
|
int
|
|
vga_pci_repost(device_t dev)
|
|
{
|
|
#if defined(__amd64__) || defined(__i386__)
|
|
x86regs_t regs;
|
|
|
|
if (!vga_pci_is_boot_display(dev))
|
|
return (EINVAL);
|
|
|
|
if (x86bios_get_orm(VGA_PCI_BIOS_SHADOW_ADDR) == NULL)
|
|
return (ENOTSUP);
|
|
|
|
x86bios_init_regs(®s);
|
|
|
|
regs.R_AH = pci_get_bus(dev);
|
|
regs.R_AL = (pci_get_slot(dev) << 3) | (pci_get_function(dev) & 0x07);
|
|
regs.R_DL = 0x80;
|
|
|
|
device_printf(dev, "REPOSTing\n");
|
|
x86bios_call(®s, X86BIOS_PHYSTOSEG(VGA_PCI_BIOS_SHADOW_ADDR + 3),
|
|
X86BIOS_PHYSTOOFF(VGA_PCI_BIOS_SHADOW_ADDR + 3));
|
|
|
|
x86bios_get_intr(0x10);
|
|
|
|
return (0);
|
|
#else
|
|
return (ENOTSUP);
|
|
#endif
|
|
}
|
|
|
|
static int
|
|
vga_pci_probe(device_t dev)
|
|
{
|
|
|
|
switch (pci_get_class(dev)) {
|
|
case PCIC_DISPLAY:
|
|
break;
|
|
case PCIC_OLD:
|
|
if (pci_get_subclass(dev) != PCIS_OLD_VGA)
|
|
return (ENXIO);
|
|
break;
|
|
default:
|
|
return (ENXIO);
|
|
}
|
|
|
|
/* Probe default display. */
|
|
vga_pci_is_boot_display(dev);
|
|
|
|
device_set_desc(dev, "VGA-compatible display");
|
|
return (BUS_PROBE_GENERIC);
|
|
}
|
|
|
|
static int
|
|
vga_pci_attach(device_t dev)
|
|
{
|
|
|
|
bus_generic_probe(dev);
|
|
|
|
/* Always create a drmn child for now to make it easier on drm. */
|
|
device_add_child(dev, "drmn", -1);
|
|
bus_generic_attach(dev);
|
|
|
|
if (vga_pci_is_boot_display(dev))
|
|
device_printf(dev, "Boot video device\n");
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
vga_pci_suspend(device_t dev)
|
|
{
|
|
|
|
return (bus_generic_suspend(dev));
|
|
}
|
|
|
|
static int
|
|
vga_pci_detach(device_t dev)
|
|
{
|
|
int error;
|
|
|
|
error = bus_generic_detach(dev);
|
|
if (error == 0)
|
|
error = device_delete_children(dev);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
vga_pci_resume(device_t dev)
|
|
{
|
|
|
|
return (bus_generic_resume(dev));
|
|
}
|
|
|
|
/* Bus interface. */
|
|
|
|
static int
|
|
vga_pci_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
|
|
{
|
|
|
|
return (BUS_READ_IVAR(device_get_parent(dev), dev, which, result));
|
|
}
|
|
|
|
static int
|
|
vga_pci_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
|
|
{
|
|
|
|
return (EINVAL);
|
|
}
|
|
|
|
static int
|
|
vga_pci_setup_intr(device_t dev, device_t child, struct resource *irq,
|
|
int flags, driver_filter_t *filter, driver_intr_t *intr, void *arg,
|
|
void **cookiep)
|
|
{
|
|
return (BUS_SETUP_INTR(device_get_parent(dev), dev, irq, flags,
|
|
filter, intr, arg, cookiep));
|
|
}
|
|
|
|
static int
|
|
vga_pci_teardown_intr(device_t dev, device_t child, struct resource *irq,
|
|
void *cookie)
|
|
{
|
|
return (BUS_TEARDOWN_INTR(device_get_parent(dev), dev, irq, cookie));
|
|
}
|
|
|
|
static struct vga_resource *
|
|
lookup_res(struct vga_pci_softc *sc, int rid)
|
|
{
|
|
int bar;
|
|
|
|
if (rid == PCIR_BIOS)
|
|
return (&sc->vga_bios);
|
|
bar = PCI_RID2BAR(rid);
|
|
if (bar >= 0 && bar <= PCIR_MAX_BAR_0)
|
|
return (&sc->vga_bars[bar]);
|
|
return (NULL);
|
|
}
|
|
|
|
static struct resource *
|
|
vga_pci_alloc_resource(device_t dev, device_t child, int type, int *rid,
|
|
rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
|
|
{
|
|
struct vga_resource *vr;
|
|
|
|
switch (type) {
|
|
case SYS_RES_MEMORY:
|
|
case SYS_RES_IOPORT:
|
|
/*
|
|
* For BARs, we cache the resource so that we only allocate it
|
|
* from the PCI bus once.
|
|
*/
|
|
vr = lookup_res(device_get_softc(dev), *rid);
|
|
if (vr == NULL)
|
|
return (NULL);
|
|
if (vr->vr_res == NULL)
|
|
vr->vr_res = bus_alloc_resource(dev, type, rid, start,
|
|
end, count, flags);
|
|
if (vr->vr_res != NULL)
|
|
vr->vr_refs++;
|
|
return (vr->vr_res);
|
|
}
|
|
return (bus_alloc_resource(dev, type, rid, start, end, count, flags));
|
|
}
|
|
|
|
static int
|
|
vga_pci_release_resource(device_t dev, device_t child, int type, int rid,
|
|
struct resource *r)
|
|
{
|
|
struct vga_resource *vr;
|
|
int error;
|
|
|
|
switch (type) {
|
|
case SYS_RES_MEMORY:
|
|
case SYS_RES_IOPORT:
|
|
/*
|
|
* For BARs, we release the resource from the PCI bus
|
|
* when the last child reference goes away.
|
|
*/
|
|
vr = lookup_res(device_get_softc(dev), rid);
|
|
if (vr == NULL)
|
|
return (EINVAL);
|
|
if (vr->vr_res == NULL)
|
|
return (EINVAL);
|
|
KASSERT(vr->vr_res == r, ("vga_pci resource mismatch"));
|
|
if (vr->vr_refs > 1) {
|
|
vr->vr_refs--;
|
|
return (0);
|
|
}
|
|
KASSERT(vr->vr_refs > 0,
|
|
("vga_pci resource reference count underflow"));
|
|
error = bus_release_resource(dev, type, rid, r);
|
|
if (error == 0) {
|
|
vr->vr_res = NULL;
|
|
vr->vr_refs = 0;
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
return (bus_release_resource(dev, type, rid, r));
|
|
}
|
|
|
|
/* PCI interface. */
|
|
|
|
static uint32_t
|
|
vga_pci_read_config(device_t dev, device_t child, int reg, int width)
|
|
{
|
|
|
|
return (pci_read_config(dev, reg, width));
|
|
}
|
|
|
|
static void
|
|
vga_pci_write_config(device_t dev, device_t child, int reg,
|
|
uint32_t val, int width)
|
|
{
|
|
|
|
pci_write_config(dev, reg, val, width);
|
|
}
|
|
|
|
static int
|
|
vga_pci_enable_busmaster(device_t dev, device_t child)
|
|
{
|
|
|
|
return (pci_enable_busmaster(dev));
|
|
}
|
|
|
|
static int
|
|
vga_pci_disable_busmaster(device_t dev, device_t child)
|
|
{
|
|
|
|
return (pci_disable_busmaster(dev));
|
|
}
|
|
|
|
static int
|
|
vga_pci_enable_io(device_t dev, device_t child, int space)
|
|
{
|
|
|
|
device_printf(dev, "child %s requested pci_enable_io\n",
|
|
device_get_nameunit(child));
|
|
return (pci_enable_io(dev, space));
|
|
}
|
|
|
|
static int
|
|
vga_pci_disable_io(device_t dev, device_t child, int space)
|
|
{
|
|
|
|
device_printf(dev, "child %s requested pci_disable_io\n",
|
|
device_get_nameunit(child));
|
|
return (pci_disable_io(dev, space));
|
|
}
|
|
|
|
static int
|
|
vga_pci_get_vpd_ident(device_t dev, device_t child, const char **identptr)
|
|
{
|
|
|
|
return (pci_get_vpd_ident(dev, identptr));
|
|
}
|
|
|
|
static int
|
|
vga_pci_get_vpd_readonly(device_t dev, device_t child, const char *kw,
|
|
const char **vptr)
|
|
{
|
|
|
|
return (pci_get_vpd_readonly(dev, kw, vptr));
|
|
}
|
|
|
|
static int
|
|
vga_pci_set_powerstate(device_t dev, device_t child, int state)
|
|
{
|
|
|
|
device_printf(dev, "child %s requested pci_set_powerstate\n",
|
|
device_get_nameunit(child));
|
|
return (pci_set_powerstate(dev, state));
|
|
}
|
|
|
|
static int
|
|
vga_pci_get_powerstate(device_t dev, device_t child)
|
|
{
|
|
|
|
device_printf(dev, "child %s requested pci_get_powerstate\n",
|
|
device_get_nameunit(child));
|
|
return (pci_get_powerstate(dev));
|
|
}
|
|
|
|
static int
|
|
vga_pci_assign_interrupt(device_t dev, device_t child)
|
|
{
|
|
|
|
device_printf(dev, "child %s requested pci_assign_interrupt\n",
|
|
device_get_nameunit(child));
|
|
return (PCI_ASSIGN_INTERRUPT(device_get_parent(dev), dev));
|
|
}
|
|
|
|
static int
|
|
vga_pci_find_cap(device_t dev, device_t child, int capability,
|
|
int *capreg)
|
|
{
|
|
|
|
return (pci_find_cap(dev, capability, capreg));
|
|
}
|
|
|
|
static int
|
|
vga_pci_find_next_cap(device_t dev, device_t child, int capability,
|
|
int start, int *capreg)
|
|
{
|
|
|
|
return (pci_find_next_cap(dev, capability, start, capreg));
|
|
}
|
|
|
|
static int
|
|
vga_pci_find_extcap(device_t dev, device_t child, int capability,
|
|
int *capreg)
|
|
{
|
|
|
|
return (pci_find_extcap(dev, capability, capreg));
|
|
}
|
|
|
|
static int
|
|
vga_pci_find_next_extcap(device_t dev, device_t child, int capability,
|
|
int start, int *capreg)
|
|
{
|
|
|
|
return (pci_find_next_extcap(dev, capability, start, capreg));
|
|
}
|
|
|
|
static int
|
|
vga_pci_find_htcap(device_t dev, device_t child, int capability,
|
|
int *capreg)
|
|
{
|
|
|
|
return (pci_find_htcap(dev, capability, capreg));
|
|
}
|
|
|
|
static int
|
|
vga_pci_find_next_htcap(device_t dev, device_t child, int capability,
|
|
int start, int *capreg)
|
|
{
|
|
|
|
return (pci_find_next_htcap(dev, capability, start, capreg));
|
|
}
|
|
|
|
static int
|
|
vga_pci_alloc_msi(device_t dev, device_t child, int *count)
|
|
{
|
|
struct vga_pci_softc *sc;
|
|
int error;
|
|
|
|
sc = device_get_softc(dev);
|
|
if (sc->vga_msi_child != NULL)
|
|
return (EBUSY);
|
|
error = pci_alloc_msi(dev, count);
|
|
if (error == 0)
|
|
sc->vga_msi_child = child;
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
vga_pci_alloc_msix(device_t dev, device_t child, int *count)
|
|
{
|
|
struct vga_pci_softc *sc;
|
|
int error;
|
|
|
|
sc = device_get_softc(dev);
|
|
if (sc->vga_msi_child != NULL)
|
|
return (EBUSY);
|
|
error = pci_alloc_msix(dev, count);
|
|
if (error == 0)
|
|
sc->vga_msi_child = child;
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
vga_pci_remap_msix(device_t dev, device_t child, int count,
|
|
const u_int *vectors)
|
|
{
|
|
struct vga_pci_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
if (sc->vga_msi_child != child)
|
|
return (ENXIO);
|
|
return (pci_remap_msix(dev, count, vectors));
|
|
}
|
|
|
|
static int
|
|
vga_pci_release_msi(device_t dev, device_t child)
|
|
{
|
|
struct vga_pci_softc *sc;
|
|
int error;
|
|
|
|
sc = device_get_softc(dev);
|
|
if (sc->vga_msi_child != child)
|
|
return (ENXIO);
|
|
error = pci_release_msi(dev);
|
|
if (error == 0)
|
|
sc->vga_msi_child = NULL;
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
vga_pci_msi_count(device_t dev, device_t child)
|
|
{
|
|
|
|
return (pci_msi_count(dev));
|
|
}
|
|
|
|
static int
|
|
vga_pci_msix_count(device_t dev, device_t child)
|
|
{
|
|
|
|
return (pci_msix_count(dev));
|
|
}
|
|
|
|
static bus_dma_tag_t
|
|
vga_pci_get_dma_tag(device_t bus, device_t child)
|
|
{
|
|
|
|
return (bus_get_dma_tag(bus));
|
|
}
|
|
|
|
static device_method_t vga_pci_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, vga_pci_probe),
|
|
DEVMETHOD(device_attach, vga_pci_attach),
|
|
DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
|
DEVMETHOD(device_suspend, vga_pci_suspend),
|
|
DEVMETHOD(device_detach, vga_pci_detach),
|
|
DEVMETHOD(device_resume, vga_pci_resume),
|
|
|
|
/* Bus interface */
|
|
DEVMETHOD(bus_read_ivar, vga_pci_read_ivar),
|
|
DEVMETHOD(bus_write_ivar, vga_pci_write_ivar),
|
|
DEVMETHOD(bus_setup_intr, vga_pci_setup_intr),
|
|
DEVMETHOD(bus_teardown_intr, vga_pci_teardown_intr),
|
|
DEVMETHOD(bus_alloc_resource, vga_pci_alloc_resource),
|
|
DEVMETHOD(bus_release_resource, vga_pci_release_resource),
|
|
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
|
|
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
|
|
DEVMETHOD(bus_get_dma_tag, vga_pci_get_dma_tag),
|
|
|
|
/* PCI interface */
|
|
DEVMETHOD(pci_read_config, vga_pci_read_config),
|
|
DEVMETHOD(pci_write_config, vga_pci_write_config),
|
|
DEVMETHOD(pci_enable_busmaster, vga_pci_enable_busmaster),
|
|
DEVMETHOD(pci_disable_busmaster, vga_pci_disable_busmaster),
|
|
DEVMETHOD(pci_enable_io, vga_pci_enable_io),
|
|
DEVMETHOD(pci_disable_io, vga_pci_disable_io),
|
|
DEVMETHOD(pci_get_vpd_ident, vga_pci_get_vpd_ident),
|
|
DEVMETHOD(pci_get_vpd_readonly, vga_pci_get_vpd_readonly),
|
|
DEVMETHOD(pci_get_powerstate, vga_pci_get_powerstate),
|
|
DEVMETHOD(pci_set_powerstate, vga_pci_set_powerstate),
|
|
DEVMETHOD(pci_assign_interrupt, vga_pci_assign_interrupt),
|
|
DEVMETHOD(pci_find_cap, vga_pci_find_cap),
|
|
DEVMETHOD(pci_find_next_cap, vga_pci_find_next_cap),
|
|
DEVMETHOD(pci_find_extcap, vga_pci_find_extcap),
|
|
DEVMETHOD(pci_find_next_extcap, vga_pci_find_next_extcap),
|
|
DEVMETHOD(pci_find_htcap, vga_pci_find_htcap),
|
|
DEVMETHOD(pci_find_next_htcap, vga_pci_find_next_htcap),
|
|
DEVMETHOD(pci_alloc_msi, vga_pci_alloc_msi),
|
|
DEVMETHOD(pci_alloc_msix, vga_pci_alloc_msix),
|
|
DEVMETHOD(pci_remap_msix, vga_pci_remap_msix),
|
|
DEVMETHOD(pci_release_msi, vga_pci_release_msi),
|
|
DEVMETHOD(pci_msi_count, vga_pci_msi_count),
|
|
DEVMETHOD(pci_msix_count, vga_pci_msix_count),
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t vga_pci_driver = {
|
|
"vgapci",
|
|
vga_pci_methods,
|
|
sizeof(struct vga_pci_softc),
|
|
};
|
|
|
|
DRIVER_MODULE(vgapci, pci, vga_pci_driver, 0, 0);
|
|
MODULE_DEPEND(vgapci, x86bios, 1, 1, 1);
|