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| Current File : //sys/arm/xscale/i8134x/i81342_pci.c |
/*-
* Copyright (c) 2006 Olivier Houchard
* 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 ``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
* 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: release/9.1.0/sys/arm/xscale/i8134x/i81342_pci.c 229093 2011-12-31 14:12:12Z hselasky $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/types.h>
#include <sys/rman.h>
#include <machine/bus.h>
#include <machine/cpu.h>
#include <machine/pcb.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_extern.h>
#include <machine/pmap.h>
#include <arm/xscale/i8134x/i81342reg.h>
#include <arm/xscale/i8134x/i81342var.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcib_private.h>
#include "pcib_if.h"
#include <dev/pci/pcireg.h>
static pcib_read_config_t i81342_pci_read_config;
static pcib_write_config_t i81342_pci_write_config;
static int
i81342_pci_probe(device_t dev)
{
struct i81342_pci_softc *sc;
sc = device_get_softc(dev);
if (device_get_unit(dev) == 0) {
device_set_desc(dev, "i81342 PCI-X bus");
sc->sc_is_atux = 1;
} else {
device_set_desc(dev, "i81342 PCIe bus");
sc->sc_is_atux = 0;
}
return (0);
}
#define PCI_MAPREG_MEM_PREFETCHABLE_MASK 0x00000008
#define PCI_MAPREG_MEM_TYPE_64BIT 0x00000004
static int
i81342_pci_attach(device_t dev)
{
struct i81342_softc *parent_sc;
struct i81342_pci_softc *sc;
uint32_t memsize, memstart;
uint32_t reg;
int func;
uint32_t busno;
sc = device_get_softc(dev);
parent_sc = device_get_softc(device_get_parent(dev));
sc->sc_atu_sh = sc->sc_is_atux ? parent_sc->sc_atux_sh :
parent_sc->sc_atue_sh;
sc->sc_st = parent_sc->sc_st;
if (bus_space_read_4(sc->sc_st, parent_sc->sc_sh, IOP34X_ESSTSR0)
& IOP34X_INT_SEL_PCIX) {
if (sc->sc_is_atux)
func = 5;
else
func = 0;
} else {
if (sc->sc_is_atux)
func = 0;
else
func = 5;
}
i81342_io_bs_init(&sc->sc_pciio, sc);
i81342_mem_bs_init(&sc->sc_pcimem, sc);
i81342_sdram_bounds(sc->sc_st, IOP34X_VADDR, &memstart, &memsize);
if (sc->sc_is_atux) {
reg = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCSR);
if (reg & ATUX_P_RSTOUT) {
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_PCSR,
reg &~ ATUX_P_RSTOUT);
DELAY(200);
}
}
/* Setup the Inbound windows. */
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IABAR0, 0);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IAUBAR0, 0);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IALR0, 0);
/* Set the mapping Physical address <=> PCI address */
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IABAR1,
memstart | PCI_MAPREG_MEM_PREFETCHABLE_MASK |
PCI_MAPREG_MEM_TYPE_64BIT);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IAUBAR1, 0);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IALR1, ~(memsize - 1)
&~(0xfff));
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IATVR1, memstart);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IAUTVR1, 0);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IABAR2, 0);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IAUBAR2, 0);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IALR2, 0);
/* Setup the Outbound IO Bar */
if (sc->sc_is_atux)
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OIOBAR,
(IOP34X_PCIX_OIOBAR >> 4) | func);
else
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OIOBAR,
(IOP34X_PCIE_OIOBAR >> 4) | func);
/* Setup the Outbound windows */
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OUMBAR0, 0);
if (sc->sc_is_atux)
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OUMBAR1,
(IOP34X_PCIX_OMBAR >> 32) | (func << ATU_OUMBAR_FUNC) |
ATU_OUMBAR_EN);
else
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OUMBAR1,
(IOP34X_PCIE_OMBAR >> 32) | (func << ATU_OUMBAR_FUNC) |
ATU_OUMBAR_EN);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OUMWTVR1, 0);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OUMBAR2, 0);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OUMBAR3, 0);
/* Enable the outbound windows. */
reg = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_CR);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_CR,
reg | ATU_CR_OUT_EN);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_ISR,
bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_ISR) & ATUX_ISR_ERRMSK);
/*
* Enable bus mastering, memory access, SERR, and parity
* checking on the ATU.
*/
if (sc->sc_is_atux) {
busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR);
busno = PCIXSR_BUSNO(busno);
} else {
busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCSR);
busno = PCIE_BUSNO(busno);
}
reg = bus_space_read_2(sc->sc_st, sc->sc_atu_sh, ATU_CMD);
reg |= PCIM_CMD_MEMEN | PCIM_CMD_BUSMASTEREN | PCIM_CMD_PERRESPEN |
PCIM_CMD_SERRESPEN;
bus_space_write_2(sc->sc_st, sc->sc_atu_sh, ATU_CMD, reg);
sc->sc_busno = busno;
/* Initialize memory and i/o rmans. */
sc->sc_io_rman.rm_type = RMAN_ARRAY;
sc->sc_io_rman.rm_descr = "I81342 PCI I/O Ports";
if (rman_init(&sc->sc_io_rman) != 0 ||
rman_manage_region(&sc->sc_io_rman,
sc->sc_is_atux ? IOP34X_PCIX_OIOBAR_VADDR :
IOP34X_PCIE_OIOBAR_VADDR,
(sc->sc_is_atux ? IOP34X_PCIX_OIOBAR_VADDR :
IOP34X_PCIE_OIOBAR_VADDR) + IOP34X_OIOBAR_SIZE) != 0) {
panic("i81342_pci_probe: failed to set up I/O rman");
}
sc->sc_mem_rman.rm_type = RMAN_ARRAY;
sc->sc_mem_rman.rm_descr = "I81342 PCI Memory";
if (rman_init(&sc->sc_mem_rman) != 0 ||
rman_manage_region(&sc->sc_mem_rman,
0, 0xffffffff) != 0) {
panic("i81342_pci_attach: failed to set up memory rman");
}
sc->sc_irq_rman.rm_type = RMAN_ARRAY;
sc->sc_irq_rman.rm_descr = "i81342 PCI IRQs";
if (sc->sc_is_atux) {
if (rman_init(&sc->sc_irq_rman) != 0 ||
rman_manage_region(&sc->sc_irq_rman, ICU_INT_XINT0,
ICU_INT_XINT3) != 0)
panic("i83142_pci_attach: failed to set up IRQ rman");
} else {
if (rman_init(&sc->sc_irq_rman) != 0 ||
rman_manage_region(&sc->sc_irq_rman, ICU_INT_ATUE_MA,
ICU_INT_ATUE_MD) != 0)
panic("i81342_pci_attach: failed to set up IRQ rman");
}
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_ISR,
bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_ISR) & ATUX_ISR_ERRMSK);
device_add_child(dev, "pci", busno);
return (bus_generic_attach(dev));
}
static int
i81342_pci_maxslots(device_t dev)
{
return (PCI_SLOTMAX);
}
static void
i81342_pci_conf_setup(struct i81342_pci_softc *sc, int bus, int slot, int func,
int reg, uint32_t *addr)
{
uint32_t busno;
if (sc->sc_is_atux) {
busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR);
busno = PCIXSR_BUSNO(busno);
} else {
busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCSR);
busno = PCIE_BUSNO(busno);
}
bus &= 0xff;
slot &= 0x1f;
func &= 0x7;
if (sc->sc_is_atux) {
if (busno == bus)
*addr = (1 << (slot + 16)) | (slot << 11) |
(func << 8) | reg;
else
*addr = (bus << 16) | (slot << 11) | (func << 11) |
reg | 1;
} else {
*addr = (bus << 24) | (slot << 19) | (func << 16) | reg;
if (bus != busno)
*addr |= 1;
}
}
static u_int32_t
i81342_pci_read_config(device_t dev, u_int bus, u_int slot, u_int func,
u_int reg, int bytes)
{
struct i81342_pci_softc *sc = device_get_softc(dev);
uint32_t addr;
uint32_t ret = 0;
uint32_t isr;
int err = 0;
vm_offset_t va;
i81342_pci_conf_setup(sc, bus, slot, func, reg & ~3, &addr);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, sc->sc_is_atux ?
ATUX_OCCAR : ATUE_OCCAR, addr);
if (sc->sc_is_atux)
va = sc->sc_atu_sh + ATUX_OCCDR;
else
va = sc->sc_atu_sh + ATUE_OCCDR;
switch (bytes) {
case 1:
err = badaddr_read((void*)(va + (reg & 3)), 1, &ret);
break;
case 2:
err = badaddr_read((void*)(va + (reg & 3)), 2, &ret);
break;
case 4:
err = badaddr_read((void *)(va) , 4, &ret);
break;
default:
printf("i81342_read_config: invalid size %d\n", bytes);
ret = -1;
}
if (err) {
isr = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_ISR);
if (sc->sc_is_atux)
isr &= ATUX_ISR_ERRMSK;
else
isr &= ATUE_ISR_ERRMSK;
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_ISR, isr);
ret = -1;
}
return (ret);
}
static void
i81342_pci_write_config(device_t dev, u_int bus, u_int slot, u_int func,
u_int reg, u_int32_t data, int bytes)
{
struct i81342_pci_softc *sc = device_get_softc(dev);
uint32_t addr;
vm_offset_t va;
i81342_pci_conf_setup(sc, bus, slot, func, reg & ~3, &addr);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, sc->sc_is_atux ?
ATUX_OCCAR : ATUE_OCCAR, addr);
va = sc->sc_is_atux ? ATUX_OCCDR : ATUE_OCCDR;
switch (bytes) {
case 1:
bus_space_write_1(sc->sc_st, sc->sc_atu_sh, va + (reg & 3)
, data);
break;
case 2:
bus_space_write_2(sc->sc_st, sc->sc_atu_sh, va + (reg & 3)
, data);
break;
case 4:
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, va, data);
break;
default:
printf("i81342_pci_write_config: Invalid size : %d\n", bytes);
}
}
static struct resource *
i81342_pci_alloc_resource(device_t bus, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags)
{
struct i81342_pci_softc *sc = device_get_softc(bus);
struct resource *rv;
struct rman *rm;
bus_space_tag_t bt = NULL;
bus_space_handle_t bh = 0;
switch (type) {
case SYS_RES_IRQ:
rm = &sc->sc_irq_rman;
break;
case SYS_RES_MEMORY:
rm = &sc->sc_mem_rman;
bt = &sc->sc_pcimem;
bh = 0;
break;
case SYS_RES_IOPORT:
rm = &sc->sc_io_rman;
bt = &sc->sc_pciio;
bh = sc->sc_is_atux ? IOP34X_PCIX_OIOBAR_VADDR :
IOP34X_PCIE_OIOBAR_VADDR;
start += bh;
end += bh;
break;
default:
return (NULL);
}
rv = rman_reserve_resource(rm, start, end, count, flags, child);
if (rv == NULL)
return (NULL);
rman_set_rid(rv, *rid);
if (type != SYS_RES_IRQ) {
if (type == SYS_RES_MEMORY)
bh += (rman_get_start(rv));
rman_set_bustag(rv, bt);
rman_set_bushandle(rv, bh);
if (flags & RF_ACTIVE) {
if (bus_activate_resource(child, type, *rid, rv)) {
rman_release_resource(rv);
return (NULL);
}
}
}
return (rv);
return (NULL);
}
static int
i81342_pci_activate_resource(device_t bus, device_t child, int type, int rid,
struct resource *r)
{
u_long p;
int error;
if (type == SYS_RES_MEMORY) {
error = bus_space_map(rman_get_bustag(r),
rman_get_bushandle(r), rman_get_size(r), 0, &p);
if (error)
return (error);
rman_set_bushandle(r, p);
}
return (rman_activate_resource(r));
}
static int
i81342_pci_setup_intr(device_t dev, device_t child, struct resource *ires,
int flags, driver_filter_t *filt, driver_intr_t *intr, void *arg,
void **cookiep)
{
return (BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags,
filt, intr, arg, cookiep));
}
static int
i81342_pci_teardown_intr(device_t dev, device_t child, struct resource *res,
void *cookie)
{
return (BUS_TEARDOWN_INTR(device_get_parent(dev), child, res, cookie));
}
static int
i81342_pci_route_interrupt(device_t pcib, device_t dev, int pin)
{
struct i81342_pci_softc *sc;
int device;
device = pci_get_slot(dev);
sc = device_get_softc(pcib);
/* XXX: Is board specific */
if (sc->sc_is_atux) {
/* PCI-X */
switch(device) {
case 1:
switch (pin) {
case 1:
return (ICU_INT_XINT1);
case 2:
return (ICU_INT_XINT2);
case 3:
return (ICU_INT_XINT3);
case 4:
return (ICU_INT_XINT0);
default:
break;
}
case 2:
switch (pin) {
case 1:
return (ICU_INT_XINT2);
case 2:
return (ICU_INT_XINT3);
case 3:
return (ICU_INT_XINT2);
case 4:
return (ICU_INT_XINT3);
default:
break;
}
}
} else {
switch (pin) {
case 1:
return (ICU_INT_ATUE_MA);
case 2:
return (ICU_INT_ATUE_MB);
case 3:
return (ICU_INT_ATUE_MC);
case 4:
return (ICU_INT_ATUE_MD);
default:
break;
}
}
printf("Warning: couldn't map %s IRQ for device %d pin %d\n",
sc->sc_is_atux ? "PCI-X" : "PCIe", device, pin);
return (-1);
}
static int
i81342_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
{
struct i81342_pci_softc *sc = device_get_softc(dev);
switch (which) {
case PCIB_IVAR_DOMAIN:
*result = 0;
return (0);
case PCIB_IVAR_BUS:
*result = sc->sc_busno;
return (0);
}
return (ENOENT);
}
static int
i81342_write_ivar(device_t dev, device_t child, int which, uintptr_t result)
{
struct i81342_pci_softc * sc = device_get_softc(dev);
switch (which) {
case PCIB_IVAR_DOMAIN:
return (EINVAL);
case PCIB_IVAR_BUS:
sc->sc_busno = result;
return (0);
}
return (ENOENT);
}
static device_method_t i81342_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, i81342_pci_probe),
DEVMETHOD(device_attach, i81342_pci_attach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
/* Bus interface */
DEVMETHOD(bus_read_ivar, i81342_read_ivar),
DEVMETHOD(bus_write_ivar, i81342_write_ivar),
DEVMETHOD(bus_alloc_resource, i81342_pci_alloc_resource),
DEVMETHOD(bus_release_resource, bus_generic_release_resource),
DEVMETHOD(bus_activate_resource, i81342_pci_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_setup_intr, i81342_pci_setup_intr),
DEVMETHOD(bus_teardown_intr, i81342_pci_teardown_intr),
/* pcib interface */
DEVMETHOD(pcib_maxslots, i81342_pci_maxslots),
DEVMETHOD(pcib_read_config, i81342_pci_read_config),
DEVMETHOD(pcib_write_config, i81342_pci_write_config),
DEVMETHOD(pcib_route_interrupt, i81342_pci_route_interrupt),
DEVMETHOD_END
};
static driver_t i81342_pci_driver = {
"pcib",
i81342_pci_methods,
sizeof(struct i81342_pci_softc),
};
static devclass_t i81342_pci_devclass;
DRIVER_MODULE(ipci, iq, i81342_pci_driver, i81342_pci_devclass, 0, 0);