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| Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/wb/@/sparc64/isa/isa.c |
/*-
* Copyright (c) 1998 Doug Rabson
* Copyright (c) 2001 Thomas Moestl <tmm@FreeBSD.org>
* 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.
*
* from: FreeBSD: src/sys/alpha/isa/isa.c,v 1.26 2001/07/11
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/sparc64/isa/isa.c 221526 2011-05-06 13:48:53Z jhb $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <isa/isareg.h>
#include <isa/isavar.h>
#include <isa/isa_common.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/openfirm.h>
#include <machine/resource.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <sparc64/pci/ofw_pci.h>
#include <sparc64/isa/ofw_isa.h>
/* There can be only one ISA bus, so it is safe to use globals. */
static u_int64_t isa_io_base;
static u_int64_t isa_io_limit;
static u_int64_t isa_mem_base;
static u_int64_t isa_mem_limit;
device_t isa_bus_device;
static phandle_t isab_node;
static struct isa_ranges *isab_ranges;
static int isab_nrange;
static struct ofw_bus_iinfo isa_iinfo;
/*
* XXX: This is really partly PCI-specific, but unfortunately is
* differently enough to have to duplicate it here...
*/
#define ISAB_RANGE_PHYS(r) \
(((u_int64_t)(r)->phys_mid << 32) | (u_int64_t)(r)->phys_lo)
#define ISAB_RANGE_SPACE(r) (((r)->phys_hi >> 24) & 0x03)
#define ISAR_SPACE_IO 0x01
#define ISAR_SPACE_MEM 0x02
#define INRANGE(x, start, end) ((x) >= (start) && (x) <= (end))
static void isa_setup_children(device_t, phandle_t);
void
isa_init(device_t dev)
{
device_t bridge;
int i;
/* The parent of the bus must be a PCI-ISA bridge. */
bridge = device_get_parent(dev);
isab_node = ofw_bus_get_node(bridge);
isab_nrange = OF_getprop_alloc(isab_node, "ranges",
sizeof(*isab_ranges), (void **)&isab_ranges);
if (isab_nrange <= 0)
panic("isa_init: cannot get bridge range property");
ofw_bus_setup_iinfo(isab_node, &isa_iinfo, sizeof(ofw_isa_intr_t));
isa_setup_children(dev, isab_node);
for (i = isab_nrange - 1; i >= 0; i--) {
switch(ISAB_RANGE_SPACE(&isab_ranges[i])) {
case ISAR_SPACE_IO:
/* This is probably always 0. */
isa_io_base = ISAB_RANGE_PHYS(&isab_ranges[i]);
isa_io_limit = isab_ranges[i].size;
break;
case ISAR_SPACE_MEM:
/* This is probably always 0. */
isa_mem_base = ISAB_RANGE_PHYS(&isab_ranges[i]);
isa_mem_limit = isab_ranges[i].size;
break;
}
}
}
static const struct {
const char *const name;
uint32_t id;
} const ofw_isa_pnp_map[] = {
{ "SUNW,lomh", 0x0000ae4e }, /* SUN0000 */
{ "dma", 0x0002d041 }, /* PNP0200 */
{ "floppy", 0x0007d041 }, /* PNP0700 */
{ "rtc", 0x000bd041 }, /* PNP0B00 */
{ "flashprom", 0x0100ae4e }, /* SUN0001 */
{ "parallel", 0x0104d041 }, /* PNP0401 */
{ "serial", 0x0105d041 }, /* PNP0501 */
{ "su", 0x0105d041 }, /* PNP0501 */
{ "i2c", 0x0200ae4e }, /* SUN0002 */
{ "rmc-comm", 0x0300ae4e }, /* SUN0003 */
{ "kb_ps2", 0x0303d041 }, /* PNP0303 */
{ "kdmouse", 0x030fd041 }, /* PNP0F03 */
{ "bscbus", 0x0400ae4e }, /* SUN0004 */
{ "power", 0x0c0cd041 }, /* PNP0C0C */
{ NULL, 0x0 }
};
static void
isa_setup_children(device_t dev, phandle_t parent)
{
struct isa_regs *regs;
struct resource_list *rl;
device_t cdev;
u_int64_t end, start;
ofw_isa_intr_t *intrs, rintr;
phandle_t node;
uint32_t *drqs, *regidx;
int i, ndrq, nintr, nreg, nregidx, rid, rtype;
char *name;
/*
* Loop through children and fake up PnP devices for them.
* Their resources are added as fully mapped and specified because
* adjusting the resources and the resource list entries respectively
* in isa_alloc_resource() causes trouble with drivers which use
* rman_get_start(), pass-through or allocate and release resources
* multiple times, etc. Adjusting the resources might be better off
* in a bus_activate_resource method but the common ISA code doesn't
* allow for an isa_activate_resource().
*/
for (node = OF_child(parent); node != 0; node = OF_peer(node)) {
if ((OF_getprop_alloc(node, "name", 1, (void **)&name)) == -1)
continue;
/*
* Keyboard and mouse controllers hang off of the `8042'
* node but we have no real use for the `8042' itself.
*/
if (strcmp(name, "8042") == 0) {
isa_setup_children(dev, node);
free(name, M_OFWPROP);
continue;
}
for (i = 0; ofw_isa_pnp_map[i].name != NULL; i++)
if (strcmp(ofw_isa_pnp_map[i].name, name) == 0)
break;
if (ofw_isa_pnp_map[i].name == NULL) {
device_printf(dev, "no PnP map entry for node "
"0x%lx: %s\n", (unsigned long)node, name);
free(name, M_OFWPROP);
continue;
}
if ((cdev = BUS_ADD_CHILD(dev, ISA_ORDER_PNPBIOS, NULL, -1)) ==
NULL)
panic("isa_setup_children: BUS_ADD_CHILD failed");
isa_set_logicalid(cdev, ofw_isa_pnp_map[i].id);
isa_set_vendorid(cdev, ofw_isa_pnp_map[i].id);
rl = BUS_GET_RESOURCE_LIST(dev, cdev);
nreg = OF_getprop_alloc(node, "reg", sizeof(*regs),
(void **)®s);
for (i = 0; i < nreg; i++) {
start = ISA_REG_PHYS(®s[i]);
end = start + regs[i].size - 1;
rtype = ofw_isa_range_map(isab_ranges, isab_nrange,
&start, &end, NULL);
rid = 0;
while (resource_list_find(rl, rtype, rid) != NULL)
rid++;
bus_set_resource(cdev, rtype, rid, start,
end - start + 1);
}
if (nreg == -1 && parent != isab_node) {
/*
* The "reg" property still might be an index into
* the set of registers of the parent device like
* with the nodes hanging off of the `8042' node.
*/
nregidx = OF_getprop_alloc(node, "reg", sizeof(*regidx),
(void **)®idx);
if (nregidx > 2)
panic("isa_setup_children: impossible number "
"of register indices");
if (nregidx != -1 && (nreg = OF_getprop_alloc(parent,
"reg", sizeof(*regs), (void **)®s)) >= nregidx) {
for (i = 0; i < nregidx; i++) {
start = ISA_REG_PHYS(®s[regidx[i]]);
end = start + regs[regidx[i]].size - 1;
rtype = ofw_isa_range_map(isab_ranges,
isab_nrange, &start, &end, NULL);
rid = 0;
while (resource_list_find(rl, rtype,
rid) != NULL)
rid++;
bus_set_resource(cdev, rtype, rid,
start, end - start + 1);
}
}
if (regidx != NULL)
free(regidx, M_OFWPROP);
}
if (regs != NULL)
free(regs, M_OFWPROP);
nintr = OF_getprop_alloc(node, "interrupts", sizeof(*intrs),
(void **)&intrs);
for (i = 0; i < nintr; i++) {
if (intrs[i] > 7)
panic("isa_setup_children: intr too large");
rintr = ofw_isa_route_intr(device_get_parent(dev), node,
&isa_iinfo, intrs[i]);
if (rintr == PCI_INVALID_IRQ) {
device_printf(dev, "could not map ISA "
"interrupt %d for node 0x%lx: %s\n",
intrs[i], (unsigned long)node, name);
continue;
}
bus_set_resource(cdev, SYS_RES_IRQ, i, rintr, 1);
}
if (intrs != NULL)
free(intrs, M_OFWPROP);
ndrq = OF_getprop_alloc(node, "dma-channel", sizeof(*drqs),
(void **)&drqs);
for (i = 0; i < ndrq; i++)
bus_set_resource(cdev, SYS_RES_DRQ, i, drqs[i], 1);
if (drqs != NULL)
free(drqs, M_OFWPROP);
/*
* Devices using DMA hang off of the `dma' node instead of
* directly from the ISA bridge node.
*/
if (strcmp(name, "dma") == 0)
isa_setup_children(dev, node);
free(name, M_OFWPROP);
}
}
struct resource *
isa_alloc_resource(device_t bus, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags)
{
/*
* Consider adding a resource definition.
*/
int passthrough = (device_get_parent(child) != bus);
int isdefault = (start == 0UL && end == ~0UL);
struct resource_list *rl;
struct resource_list_entry *rle;
u_long base, limit;
rl = BUS_GET_RESOURCE_LIST(bus, child);
if (!passthrough && !isdefault) {
rle = resource_list_find(rl, type, *rid);
if (!rle) {
if (*rid < 0)
return (NULL);
switch (type) {
case SYS_RES_IRQ:
if (*rid >= ISA_NIRQ)
return (NULL);
break;
case SYS_RES_DRQ:
if (*rid >= ISA_NDRQ)
return (NULL);
break;
case SYS_RES_MEMORY:
if (*rid >= ISA_NMEM)
return (NULL);
break;
case SYS_RES_IOPORT:
if (*rid >= ISA_NPORT)
return (NULL);
break;
default:
return (NULL);
}
resource_list_add(rl, type, *rid, start, end, count);
}
}
/*
* Sanity check if the resource in the respective entry is fully
* mapped and specified and its type allocable. A driver could
* have added an out of range resource on its own.
*/
if (!passthrough) {
if ((rle = resource_list_find(rl, type, *rid)) == NULL)
return (NULL);
base = limit = 0;
switch (type) {
case SYS_RES_MEMORY:
base = isa_mem_base;
limit = base + isa_mem_limit;
break;
case SYS_RES_IOPORT:
base = isa_io_base;
limit = base + isa_io_limit;
break;
case SYS_RES_IRQ:
if (rle->start != rle->end || rle->start <= 7)
return (NULL);
break;
case SYS_RES_DRQ:
break;
default:
return (NULL);
}
if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) {
if (!INRANGE(rle->start, base, limit) ||
!INRANGE(rle->end, base, limit))
return (NULL);
}
}
return (resource_list_alloc(rl, bus, child, type, rid, start, end,
count, flags));
}
int
isa_release_resource(device_t bus, device_t child, int type, int rid,
struct resource *res)
{
return (bus_generic_rl_release_resource(bus, child, type, rid, res));
}