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Add sibyte device support.

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Submitted by:	Neelkanth Natu
This commit is contained in:
Warner Losh 2009-07-04 03:05:48 +00:00
parent c72a141e81
commit f94784e818
8 changed files with 1575 additions and 0 deletions
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170
sys/mips/sibyte/ata_zbbus.c Normal file
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/*-
* Copyright (c) 2009 Neelkanth Natu
* 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/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/sema.h>
#include <sys/taskqueue.h>
#include <machine/bus.h>
#include <vm/uma.h>
#include <sys/ata.h>
#include <dev/ata/ata-all.h>
#include <machine/resource.h>
__FBSDID("$FreeBSD$");
static int
ata_zbbus_probe(device_t dev)
{
return (ata_probe(dev));
}
static int
ata_zbbus_attach(device_t dev)
{
int i, rid, regshift, regoffset;
struct ata_channel *ch;
struct resource *io;
ch = device_get_softc(dev);
if (ch->attached)
return (0);
ch->attached = 1;
rid = 0;
io = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 1, RF_ACTIVE);
if (io == NULL)
return (ENXIO);
/*
* SWARM needs an address shift of 5 when accessing ATA registers.
*
* For e.g. an access to register 4 actually needs an address
* of (4 << 5) to be output on the generic bus.
*/
regshift = 5;
resource_int_value(device_get_name(dev), device_get_unit(dev),
"regshift", &regshift);
if (regshift && bootverbose)
device_printf(dev, "using a register shift of %d\n", regshift);
regoffset = 0x1F0;
resource_int_value(device_get_name(dev), device_get_unit(dev),
"regoffset", &regoffset);
if (regoffset && bootverbose) {
device_printf(dev, "using a register offset of 0x%0x\n",
regoffset);
}
/* setup the ata register addresses */
for (i = ATA_DATA; i <= ATA_COMMAND; ++i) {
ch->r_io[i].res = io;
ch->r_io[i].offset = (regoffset + i) << regshift;
}
ch->r_io[ATA_CONTROL].res = io;
ch->r_io[ATA_CONTROL].offset = (regoffset + ATA_CTLOFFSET) << regshift;
ch->r_io[ATA_IDX_ADDR].res = io; /* XXX what is this used for */
ata_default_registers(dev);
/* initialize softc for this channel */
ch->unit = 0;
ch->flags |= ATA_USE_16BIT;
ata_generic_hw(dev);
return (ata_attach(dev));
}
static int
ata_zbbus_detach(device_t dev)
{
int error;
struct ata_channel *ch = device_get_softc(dev);
if (!ch->attached)
return (0);
ch->attached = 0;
error = ata_detach(dev);
bus_release_resource(dev, SYS_RES_MEMORY, 0,
ch->r_io[ATA_IDX_ADDR].res);
return (error);
}
static int
ata_zbbus_suspend(device_t dev)
{
struct ata_channel *ch = device_get_softc(dev);
if (!ch->attached)
return (0);
return (ata_suspend(dev));
}
static int
ata_zbbus_resume(device_t dev)
{
struct ata_channel *ch = device_get_softc(dev);
if (!ch->attached)
return (0);
return (ata_resume(dev));
}
static device_method_t ata_zbbus_methods[] = {
/* device interface */
DEVMETHOD(device_probe, ata_zbbus_probe),
DEVMETHOD(device_attach, ata_zbbus_attach),
DEVMETHOD(device_detach, ata_zbbus_detach),
DEVMETHOD(device_suspend, ata_zbbus_suspend),
DEVMETHOD(device_resume, ata_zbbus_resume),
{ 0, 0 }
};
static driver_t ata_zbbus_driver = {
"ata",
ata_zbbus_methods,
sizeof(struct ata_channel)
};
DRIVER_MODULE(ata, zbbus, ata_zbbus_driver, ata_devclass, 0, 0);

9
sys/mips/sibyte/files.sibyte Normal file
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# $FreeBSD$
mips/sibyte/sb_machdep.c standard
mips/sibyte/sb_zbbus.c standard
mips/sibyte/sb_zbpci.c standard
mips/sibyte/sb_scd.c standard
mips/sibyte/ata_zbbus.c standard
mips/sibyte/sb_asm.S standard

155
sys/mips/sibyte/sb_asm.S Normal file
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/*-
* Copyright (c) 2009 Neelkanth Natu
* 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 <machine/asm.h>
/*
* We compile a 32-bit kernel to run on the SB-1 processor which is a 64-bit
* processor. It has some registers that must be accessed using 64-bit load
* and store instructions.
*
* So we have to resort to assembly because the compiler does not emit the
* 'ld' and 'sd' instructions since it thinks that it is compiling for a
* 32-bit mips processor.
*/
.set mips64
.set noat
.set noreorder
/*
* return (MIPS_PHYS_TO_KSEG1(0x10020008))
* Parameters: none
*/
LEAF(sb_read_syscfg)
lui v0, 0xb002
ori v0, v0, 0x8
ld v1, 0(v0) /* syscfg = MIPS_PHYS_TO_KSEG1(0x10020008) */
move v0, v1
dsll32 v0, v0, 0
dsrl32 v0, v0, 0 /* v0 = lower_uint32(mask) */
jr ra
dsrl32 v1, v1, 0 /* v1 = upper_uint32(mask) */
END(sb_read_syscfg)
/*
* MIPS_PHYS_TO_KSEG1(0x10020008) = (uint64_t)val
* Parameters:
* - lower_uint32(val): a0
* - upper_uint32(val): a1
*/
LEAF(sb_write_syscfg)
lui v0, 0xb002
ori v0, v0, 0x8
dsll32 a1, a1, 0 /* clear lower 32 bits of a1 */
dsll32 a0, a0, 0
dsrl32 a0, a0, 0 /* clear upper 32 bits of a0 */
or a1, a1, a0
sd a1, 0(v0) /* MIPS_PHYS_TO_KSEG1(0x10020008) = val */
jr ra
nop
nop
END(sb_write_syscfg)
/*
* MIPS_PHYS_TO_KSEG1(0x10020028) |= (1 << intsrc)
*
* Parameters:
* - intsrc (a0)
*/
LEAF(sb_disable_intsrc)
lui v0, 0xb002
ori v0, v0, 0x28
ld v1, 0(v0) /* mask = MIPS_PHYS_TO_KSEG1(0x10020028) */
li a1, 1
dsllv a1, a1, a0
or a1, a1, v1 /* mask |= (1 << intsrc) */
jr ra
sd a1, 0(v0) /* MIPS_PHYS_TO_KSEG1(0x10020028) = mask */
END(sb_disable_intsrc)
/*
* MIPS_PHYS_TO_KSEG1(0x10020028) &= ~(1 << intsrc)
*
* Parameters:
* - intsrc (a0)
*/
LEAF(sb_enable_intsrc)
lui v0, 0xb002
ori v0, v0, 0x28
ld v1, 0(v0) /* mask = MIPS_PHYS_TO_KSEG1(0x10020028) */
li a2, 1
dsllv a2, a2, a0
nor a2, zero, a2
and a2, a2, v1 /* mask &= ~(1 << intsrc) */
sd a2, 0(v0) /* MIPS_PHYS_TO_KSEG1(0x10020028) = mask */
jr ra
nop
END(sb_enable_intsrc)
/*
* return ((uint64_t)MIPS_PHYS_TO_KSEG1(0x10020028))
* Parameters: none
*/
LEAF(sb_read_intsrc_mask)
lui v0, 0xb002
ori v0, v0, 0x28
ld v1, 0(v0) /* mask = MIPS_PHYS_TO_KSEG1(0x10020028) */
move v0, v1
dsll32 v0, v0, 0
dsrl32 v0, v0, 0 /* v0 = lower_uint32(mask) */
jr ra
dsrl32 v1, v1, 0 /* v1 = upper_uint32(mask) */
END(sb_read_intsrc_mask)
/*
* return ((uint64_t *)MIPS_PHYS_TO_KSEG1(0x10020200) + intsrc)
* Parameters:
* - intsrc (a0)
*/
LEAF(sb_read_intmap)
sll a0, a0, 3 /* compute the offset of the intmap register */
lui v0, 0xb002
addu a0, a0, v0
ld v0, 512(a0) /* v0 = MIPS_PHYS_TO_KSEG1(0x10020200) + off */
jr ra
nop
END(sb_read_intmap)
/*
* (uint64_t *)MIPS_PHYS_TO_KSEG1(0x10020200) + intsrc = irq
* Parameters:
* - intsrc (a0)
* - irq (a1)
*/
LEAF(sb_write_intmap)
sll a0, a0, 0x3 /* compute the offset of the intmap register */
lui v0, 0xb002
addu a0, a0, v0
sd a1, 512(a0) /* MIPS_PHYS_TO_KSEG1(0x10020200) + off = irq */
jr ra
nop
END(sb_write_intmap)

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sys/mips/sibyte/sb_machdep.c Normal file
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/*-
* Copyright (c) 2007 Bruce M. Simpson.
* 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 <sys/param.h>
#include <machine/cpuregs.h>
#include "opt_ddb.h"
#include "opt_kdb.h"
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/imgact.h>
#include <sys/bio.h>
#include <sys/buf.h>
#include <sys/bus.h>
#include <sys/cpu.h>
#include <sys/cons.h>
#include <sys/exec.h>
#include <sys/ucontext.h>
#include <sys/proc.h>
#include <sys/kdb.h>
#include <sys/ptrace.h>
#include <sys/reboot.h>
#include <sys/signalvar.h>
#include <sys/sysent.h>
#include <sys/sysproto.h>
#include <sys/user.h>
#include <vm/vm.h>
#include <vm/vm_object.h>
#include <vm/vm_page.h>
#include <vm/vm_pager.h>
#include <machine/cache.h>
#include <machine/clock.h>
#include <machine/cpu.h>
#include <machine/cpuinfo.h>
#include <machine/cpufunc.h>
#include <machine/cpuregs.h>
#include <machine/hwfunc.h>
#include <machine/intr_machdep.h>
#include <machine/locore.h>
#include <machine/md_var.h>
#include <machine/pte.h>
#include <machine/sigframe.h>
#include <machine/trap.h>
#include <machine/vmparam.h>
#ifdef CFE
#include <dev/cfe/cfe_api.h>
#endif
#include "sb_scd.h"
#ifdef DDB
#ifndef KDB
#error KDB must be enabled in order for DDB to work!
#endif
#endif
#ifdef CFE
extern uint32_t cfe_handle;
extern uint32_t cfe_vector;
#endif
#ifdef CFE_ENV
extern void cfe_env_init(void);
#endif
extern int *edata;
extern int *end;
static void
mips_init(void)
{
int i, cfe_mem_idx, tmp;
uint64_t maxmem;
#ifdef CFE_ENV
cfe_env_init();
#endif
TUNABLE_INT_FETCH("boothowto", &boothowto);
if (boothowto & RB_VERBOSE)
bootverbose++;
#ifdef MAXMEM
tmp = MAXMEM;
#else
tmp = 0;
#endif
TUNABLE_INT_FETCH("hw.physmem", &tmp);
maxmem = (uint64_t)tmp * 1024;
#ifdef CFE
/*
* Query DRAM memory map from CFE.
*/
physmem = 0;
cfe_mem_idx = 0;
for (i = 0; i < 10; i += 2) {
int result;
uint64_t addr, len, type;
result = cfe_enummem(cfe_mem_idx++, 0, &addr, &len, &type);
if (result < 0) {
phys_avail[i] = phys_avail[i + 1] = 0;
break;
}
KASSERT(type == CFE_MI_AVAILABLE,
("CFE DRAM region is not available?"));
if (bootverbose)
printf("cfe_enummem: 0x%016jx/%llu.\n", addr, len);
if (maxmem != 0) {
if (addr >= maxmem) {
printf("Ignoring %llu bytes of memory at 0x%jx "
"that is above maxmem %dMB\n",
len, addr,
(int)(maxmem / (1024 * 1024)));
continue;
}
if (addr + len > maxmem) {
printf("Ignoring %llu bytes of memory "
"that is above maxmem %dMB\n",
(addr + len) - maxmem,
(int)(maxmem / (1024 * 1024)));
len = maxmem - addr;
}
}
phys_avail[i] = addr;
if (i == 0 && addr == 0) {
/*
* If this is the first physical memory segment probed
* from CFE, omit the region at the start of physical
* memory where the kernel has been loaded.
*/
phys_avail[i] += MIPS_KSEG0_TO_PHYS((vm_offset_t)&end);
}
phys_avail[i + 1] = addr + len;
physmem += len;
}
realmem = btoc(physmem);
#endif
physmem = realmem;
init_param1();
init_param2(physmem);
mips_cpu_init();
pmap_bootstrap();
mips_proc0_init();
mutex_init();
kdb_init();
#ifdef KDB
if (boothowto & RB_KDB)
kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
#endif
}
void
platform_halt(void)
{
}
void
platform_identify(void)
{
}
void
platform_reset(void)
{
/*
* XXX SMP
* XXX flush data caches
*/
sb_system_reset();
}
void
platform_trap_enter(void)
{
}
void
platform_trap_exit(void)
{
}
void
platform_start(__register_t a0 __unused, __register_t a1 __unused,
__register_t a2 __unused, __register_t a3 __unused)
{
vm_offset_t kernend;
/* clear the BSS and SBSS segments */
memset(&edata, 0, (vm_offset_t)&end - (vm_offset_t)&edata);
kernend = round_page((vm_offset_t)&end);
#ifdef CFE
/*
* Initialize CFE firmware trampolines before
* we initialize the low-level console.
*/
if (cfe_handle != 0)
cfe_init(cfe_handle, cfe_vector);
#endif
cninit();
#ifdef CFE
if (cfe_handle == 0)
panic("CFE was not detected by locore.\n");
#endif
mips_init();
mips_timer_init_params(sb_cpu_speed(), 0);
}

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sys/mips/sibyte/sb_scd.c Normal file
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/*-
* Copyright (c) 2009 Neelkanth Natu
* 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/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <machine/resource.h>
#include "sb_scd.h"
__FBSDID("$FreeBSD$");
/*
* System Control and Debug (SCD) unit on the Sibyte ZBbus.
*/
/*
* Extract the value starting at bit position 'b' for 'n' bits from 'x'.
*/
#define GET_VAL_64(x, b, n) (((x) >> (b)) & ((1ULL << (n)) - 1))
#define SYSCFG_PLLDIV(x) GET_VAL_64((x), 7, 5)
uint64_t
sb_cpu_speed(void)
{
int plldiv;
const uint64_t MHZ = 1000000;
plldiv = SYSCFG_PLLDIV(sb_read_syscfg());
if (plldiv == 0) {
printf("PLL_DIV is 0 - assuming 6 (300MHz).\n");
plldiv = 6;
}
return (plldiv * 50 * MHZ);
}
void
sb_system_reset(void)
{
uint64_t syscfg;
const uint64_t SYSTEM_RESET = 1ULL << 60;
const uint64_t EXT_RESET = 1ULL << 59;
const uint64_t SOFT_RESET = 1ULL << 58;
syscfg = sb_read_syscfg();
syscfg &= ~SOFT_RESET;
syscfg |= SYSTEM_RESET | EXT_RESET;
sb_write_syscfg(syscfg);
}
int
sb_route_intsrc(int intsrc)
{
int intrnum;
KASSERT(intsrc >= 0 && intsrc < NUM_INTSRC,
("Invalid interrupt source number (%d)", intsrc));
/*
* Interrupt 5 is used by sources internal to the CPU (e.g. timer).
* Use a deterministic mapping for the remaining sources to map to
* interrupt numbers 0 through 4.
*/
intrnum = intsrc % 5;
/*
* Program the interrupt mapper while we are here.
*/
sb_write_intmap(intsrc, intrnum);
return (intrnum);
}
#define SCD_PHYSADDR 0x10000000
#define SCD_SIZE 0x00060000
static int
scd_probe(device_t dev)
{
device_set_desc(dev, "Broadcom/Sibyte System Control and Debug");
return (0);
}
static int
scd_attach(device_t dev)
{
int rid;
struct resource *res;
if (bootverbose) {
device_printf(dev, "attached.\n");
}
rid = 0;
res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, SCD_PHYSADDR,
SCD_PHYSADDR + SCD_SIZE - 1, SCD_SIZE, 0);
if (res == NULL) {
panic("Cannot allocate resource for system control and debug.");
}
return (0);
}
static device_method_t scd_methods[] ={
/* Device interface */
DEVMETHOD(device_probe, scd_probe),
DEVMETHOD(device_attach, scd_attach),
DEVMETHOD(device_detach, bus_generic_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
{ 0, 0 }
};
static driver_t scd_driver = {
"scd",
scd_methods
};
static devclass_t scd_devclass;
DRIVER_MODULE(scd, zbbus, scd_driver, scd_devclass, 0, 0);

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/*-
* Copyright (c) 2009 Neelkanth Natu
* 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.
*/
#ifndef _SB_SCD_H_
#define _SB_SCD_H_
#define NUM_INTSRC 64 /* total number of interrupt sources */
uint64_t sb_cpu_speed(void);
void sb_system_reset(void);
int sb_route_intsrc(int src);
void sb_enable_intsrc(int src);
void sb_disable_intsrc(int src);
uint64_t sb_read_intsrc_mask(void);
int sb_read_intmap(int intsrc);
void sb_write_intmap(int intsrc, int intrnum);
uint64_t sb_read_syscfg(void);
void sb_write_syscfg(uint64_t val);
#endif /* _SB_SCD_H_ */

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sys/mips/sibyte/sb_zbbus.c Normal file
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/*-
* Copyright (c) 2009 Neelkanth Natu
* 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/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/malloc.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <machine/intr_machdep.h>
#include "sb_scd.h"
__FBSDID("$FreeBSD$");
static MALLOC_DEFINE(M_INTMAP, "sb1250 intmap", "Sibyte 1250 Interrupt Mapper");
#define NUM_HARD_IRQS 6
struct sb_intmap {
int intsrc; /* interrupt mapper register number (0 - 63) */
int active; /* Does this source generate interrupts? */
/*
* The device that the interrupt belongs to. Note that multiple
* devices may share an interrupt. For e.g. PCI_INT_x lines.
*
* The device 'dev' in combination with the 'rid' uniquely
* identify this interrupt source.
*/
device_t dev;
int rid;
SLIST_ENTRY(sb_intmap) next;
};
/*
* We register 'sb_intsrc.isrc' using cpu_register_hard_intsrc() for each
* hard interrupt source [0-5].
*
* The mask/unmask callbacks use the information in 'sb_intmap' to figure
* out the corresponding interrupt sources to mask/unmask.
*/
struct sb_intsrc {
struct intsrc isrc;
SLIST_HEAD(, sb_intmap) sb_intmap_head;
};
static struct sb_intsrc sb_intsrc[NUM_HARD_IRQS];
static struct sb_intmap *
sb_intmap_lookup(int intrnum, device_t dev, int rid)
{
struct sb_intsrc *isrc;
struct sb_intmap *map;
isrc = &sb_intsrc[intrnum];
SLIST_FOREACH(map, &isrc->sb_intmap_head, next) {
if (dev == map->dev && rid == map->rid)
break;
}
return (map);
}
/*
* Keep track of which (dev,rid) tuple is using the interrupt source.
*
* We don't actually unmask the interrupt source until the device calls
* a bus_setup_intr() on the resource.
*/
static void
sb_intmap_add(int intrnum, device_t dev, int rid, int intsrc)
{
struct sb_intsrc *isrc;
struct sb_intmap *map;
register_t sr;
KASSERT(intrnum >= 0 && intrnum < NUM_HARD_IRQS,
("intrnum is out of range: %d", intrnum));
isrc = &sb_intsrc[intrnum];
map = sb_intmap_lookup(intrnum, dev, rid);
if (map) {
KASSERT(intsrc == map->intsrc,
("%s%d allocating SYS_RES_IRQ resource with rid %d "
"with a different intsrc (%d versus %d)",
device_get_name(dev), device_get_unit(dev), rid,
intsrc, map->intsrc));
return;
}
map = malloc(sizeof(*map), M_INTMAP, M_WAITOK | M_ZERO);
map->intsrc = intsrc;
map->dev = dev;
map->rid = rid;
sr = intr_disable();
SLIST_INSERT_HEAD(&isrc->sb_intmap_head, map, next);
intr_restore(sr);
}
static void
sb_intmap_activate(int intrnum, device_t dev, int rid)
{
struct sb_intmap *map;
register_t sr;
KASSERT(intrnum >= 0 && intrnum < NUM_HARD_IRQS,
("intrnum is out of range: %d", intrnum));
map = sb_intmap_lookup(intrnum, dev, rid);
if (map) {
/*
* See comments in sb_unmask_func() about disabling cpu intr
*/
sr = intr_disable();
map->active = 1;
sb_enable_intsrc(map->intsrc);
intr_restore(sr);
} else {
/*
* In zbbus_setup_intr() we blindly call sb_intmap_activate()
* for every interrupt activation that comes our way.
*
* We might end up here if we did not "hijack" the SYS_RES_IRQ
* resource in zbbus_alloc_resource().
*/
printf("sb_intmap_activate: unable to activate interrupt %d "
"for device %s%d rid %d.\n", intrnum,
device_get_name(dev), device_get_unit(dev), rid);
}
}
static void
sb_mask_func(struct intsrc *arg)
{
struct sb_intmap *map;
struct sb_intsrc *isrc;
uint64_t isrc_bitmap;
isrc_bitmap = 0;
isrc = (struct sb_intsrc *)arg;
SLIST_FOREACH(map, &isrc->sb_intmap_head, next) {
if (map->active == 0)
continue;
/*
* If we have already disabled this interrupt source then don't
* do it again. This can happen when multiple devices share
* an interrupt source (e.g. PCI_INT_x).
*/
if (isrc_bitmap & (1ULL << map->intsrc))
continue;
sb_disable_intsrc(map->intsrc);
isrc_bitmap |= 1ULL << map->intsrc;
}
}
static void
sb_unmask_func(struct intsrc *arg)
{
struct sb_intmap *map;
struct sb_intsrc *sb_isrc;
uint64_t isrc_bitmap;
register_t sr;
isrc_bitmap = 0;
sb_isrc = (struct sb_intsrc *)arg;
/*
* Make sure we disable the cpu interrupts when enabling the
* interrupt sources.
*
* This is to prevent a condition where some interrupt sources have
* been enabled (but not all) and one of those interrupt sources
* triggers an interrupt.
*
* If any of the interrupt handlers executes in an ithread then
* cpu_intr() will return with all interrupt sources feeding into
* that cpu irq masked. But when the loop below picks up where it
* left off it will enable the remaining interrupt sources!!!
*
* If the disable the cpu interrupts then this race does not happen.
*/
sr = intr_disable();
SLIST_FOREACH(map, &sb_isrc->sb_intmap_head, next) {
if (map->active == 0)
continue;
/*
* If we have already enabled this interrupt source then don't
* do it again. This can happen when multiple devices share
* an interrupt source (e.g. PCI_INT_x).
*/
if (isrc_bitmap & (1ULL << map->intsrc))
continue;
sb_enable_intsrc(map->intsrc);
isrc_bitmap |= 1ULL << map->intsrc;
}
intr_restore(sr);
}
struct zbbus_devinfo {
struct resource_list resources;
};
static MALLOC_DEFINE(M_ZBBUSDEV, "zbbusdev", "zbbusdev");
static int
zbbus_probe(device_t dev)
{
device_set_desc(dev, "Broadcom/Sibyte ZBbus");
return (0);
}
static int
zbbus_attach(device_t dev)
{
int i, error;
struct intsrc *isrc;
if (bootverbose) {
device_printf(dev, "attached.\n");
}
for (i = 0; i < NUM_HARD_IRQS; ++i) {
isrc = &sb_intsrc[i].isrc;
isrc->intrnum = i;
isrc->mask_func = sb_mask_func;
isrc->unmask_func = sb_unmask_func;
error = cpu_register_hard_intsrc(isrc);
if (error)
panic("Error %d registering intsrc %d", error, i);
}
bus_generic_probe(dev);
bus_enumerate_hinted_children(dev);
bus_generic_attach(dev);
return (0);
}
static void
zbbus_hinted_child(device_t bus, const char *dname, int dunit)
{
device_t child;
long maddr, msize;
int err, irq;
if (resource_disabled(dname, dunit))
return;
child = BUS_ADD_CHILD(bus, 0, dname, dunit);
if (child == NULL) {
panic("zbbus: could not add child %s unit %d\n", dname, dunit);
}
if (bootverbose)
device_printf(bus, "Adding hinted child %s%d\n", dname, dunit);
/*
* Assign any pre-defined resources to the child.
*/
if (resource_long_value(dname, dunit, "msize", &msize) == 0 &&
resource_long_value(dname, dunit, "maddr", &maddr) == 0) {
if (bootverbose) {
device_printf(bus, "Assigning memory resource "
"0x%0lx/%ld to child %s%d\n",
maddr, msize, dname, dunit);
}
err = bus_set_resource(child, SYS_RES_MEMORY, 0, maddr, msize);
if (err) {
device_printf(bus, "Unable to set memory resource "
"0x%0lx/%ld for child %s%d: %d\n",
maddr, msize, dname, dunit, err);
}
}
if (resource_int_value(dname, dunit, "irq", &irq) == 0) {
if (bootverbose) {
device_printf(bus, "Assigning irq resource %d to "
"child %s%d\n", irq, dname, dunit);
}
err = bus_set_resource(child, SYS_RES_IRQ, 0, irq, 1);
if (err) {
device_printf(bus, "Unable to set irq resource %d"
"for child %s%d: %d\n",
irq, dname, dunit, err);
}
}
}
static struct resource *
zbbus_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 resource *res;
int intrnum, intsrc, isdefault;
struct resource_list *rl;
struct resource_list_entry *rle;
struct zbbus_devinfo *dinfo;
isdefault = (start == 0UL && end == ~0UL && count == 1);
/*
* Our direct child is asking for a default resource allocation.
*/
if (device_get_parent(child) == bus) {
dinfo = device_get_ivars(child);
rl = &dinfo->resources;
rle = resource_list_find(rl, type, *rid);
if (rle) {
if (rle->res)
panic("zbbus_alloc_resource: resource is busy");
if (isdefault) {
start = rle->start;
count = ulmax(count, rle->count);
end = ulmax(rle->end, start + count - 1);
}
} else {
if (isdefault) {
/*
* Our child is requesting a default
* resource allocation but we don't have the
* 'type/rid' tuple in the resource list.
*
* We have to fail the resource allocation.
*/
return (NULL);
} else {
/*
* The child is requesting a non-default
* resource. We just pass the request up
* to our parent. If the resource allocation
* succeeds we will create a resource list
* entry corresponding to that resource.
*/
}
}
} else {
rl = NULL;
rle = NULL;
}
/*
* nexus doesn't know about the interrupt mapper and only wants to
* see the hard irq numbers [0-6]. We translate from the interrupt
* source presented to the mapper to the interrupt number presented
* to the cpu.
*/
if ((count == 1) && (type == SYS_RES_IRQ)) {
intsrc = start;
intrnum = sb_route_intsrc(intsrc);
start = end = intrnum;
} else {
intsrc = -1; /* satisfy gcc */
intrnum = -1;
}
res = bus_generic_alloc_resource(bus, child, type, rid,
start, end, count, flags);
/*
* Keep track of the input into the interrupt mapper that maps
* to the resource allocated by 'child' with resource id 'rid'.
*
* If we don't record the mapping here then we won't be able to
* locate the interrupt source when bus_setup_intr(child,rid) is
* called.
*/
if (res != NULL && intrnum != -1)
sb_intmap_add(intrnum, child, rman_get_rid(res), intsrc);
/*
* If a non-default resource allocation by our child was successful
* then keep track of the resource in the resource list associated
* with the child.
*/
if (res != NULL && rle == NULL && device_get_parent(child) == bus) {
resource_list_add(rl, type, *rid, start, end, count);
rle = resource_list_find(rl, type, *rid);
if (rle == NULL)
panic("zbbus_alloc_resource: cannot find resource");
}
if (rle != NULL) {
KASSERT(device_get_parent(child) == bus,
("rle should be NULL for passthru device"));
rle->res = res;
if (rle->res) {
rle->start = rman_get_start(rle->res);
rle->end = rman_get_end(rle->res);
rle->count = count;
}
}
return (res);
}
static int
zbbus_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)
{
int error;
error = bus_generic_setup_intr(dev, child, irq, flags,
filter, intr, arg, cookiep);
if (error == 0)
sb_intmap_activate(rman_get_start(irq), child,
rman_get_rid(irq));
return (error);
}
static device_t
zbbus_add_child(device_t bus, int order, const char *name, int unit)
{
device_t child;
struct zbbus_devinfo *dinfo;
child = device_add_child_ordered(bus, order, name, unit);
if (child != NULL) {
dinfo = malloc(sizeof(struct zbbus_devinfo), M_ZBBUSDEV,
M_WAITOK | M_ZERO);
resource_list_init(&dinfo->resources);
device_set_ivars(child, dinfo);
}
return (child);
}
static struct resource_list *
zbbus_get_resource_list(device_t dev, device_t child)
{
struct zbbus_devinfo *dinfo = device_get_ivars(child);
return (&dinfo->resources);
}
static device_method_t zbbus_methods[] ={
/* Device interface */
DEVMETHOD(device_probe, zbbus_probe),
DEVMETHOD(device_attach, zbbus_attach),
DEVMETHOD(device_detach, bus_generic_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
/* Bus interface */
DEVMETHOD(bus_alloc_resource, zbbus_alloc_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_release_resource, bus_generic_release_resource),
DEVMETHOD(bus_get_resource_list,zbbus_get_resource_list),
DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
DEVMETHOD(bus_delete_resource, bus_generic_rl_delete_resource),
DEVMETHOD(bus_setup_intr, zbbus_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
DEVMETHOD(bus_add_child, zbbus_add_child),
DEVMETHOD(bus_hinted_child, zbbus_hinted_child),
{ 0, 0 }
};
static driver_t zbbus_driver = {
"zbbus",
zbbus_methods
};
static devclass_t zbbus_devclass;
DRIVER_MODULE(zbbus, nexus, zbbus_driver, zbbus_devclass, 0, 0);

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sys/mips/sibyte/sb_zbpci.c Normal file
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@ -0,0 +1,283 @@
/*-
* Copyright (c) 2009 Neelkanth Natu
* 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/param.h>
#include <sys/types.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/pcpu.h>
#include <sys/smp.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/vm_kern.h>
#include <vm/vm_extern.h>
#include <vm/pmap.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcib_private.h>
#include <machine/pmap.h>
#include <machine/resource.h>
#include "pcib_if.h"
#include "sb_scd.h"
__FBSDID("$FreeBSD$");
static struct {
vm_offset_t vaddr;
vm_paddr_t paddr;
} zbpci_config_space[MAXCPU];
static const vm_paddr_t CFG_PADDR_BASE = 0xFE000000;
static int
zbpci_probe(device_t dev)
{
device_set_desc(dev, "Broadcom/Sibyte PCI I/O Bridge");
return (0);
}
static int
zbpci_attach(device_t dev)
{
int n, rid, size;
vm_offset_t va;
struct resource *res;
/*
* Reserve the the physical memory that is used to read/write to the
* pci config space but don't activate it. We are using a page worth
* of KVA as a window over this region.
*/
rid = 0;
size = (PCI_BUSMAX + 1) * (PCI_SLOTMAX + 1) * (PCI_FUNCMAX + 1) * 256;
res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, CFG_PADDR_BASE,
CFG_PADDR_BASE + size - 1, size, 0);
if (res == NULL) {
panic("Cannot allocate resource for config space accesses.");
}
/*
* Allocate KVA for accessing PCI config space.
*/
va = kmem_alloc_nofault(kernel_map, PAGE_SIZE * mp_ncpus);
if (va == 0) {
device_printf(dev, "Cannot allocate virtual addresses for "
"config space access.\n");
return (ENOMEM);
}
for (n = 0; n < mp_ncpus; ++n) {
zbpci_config_space[n].vaddr = va + n * PAGE_SIZE;
}
/*
* Sibyte has the PCI bus hierarchy rooted at bus 0 and HT-PCI
* hierarchy rooted at bus 1.
*/
if (device_add_child(dev, "pci", 0) == NULL) {
panic("zbpci_attach: could not add pci bus 0.\n");
}
if (device_add_child(dev, "pci", 1) == NULL) {
panic("zbpci_attach: could not add pci bus 1.\n");
}
if (bootverbose) {
device_printf(dev, "attached.\n");
}
return (bus_generic_attach(dev));
}
static int
zbpci_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
{
switch (which) {
case PCIB_IVAR_DOMAIN:
*result = 0; /* single PCI domain */
return (0);
case PCIB_IVAR_BUS:
*result = device_get_unit(child); /* PCI bus 0 or 1 */
return (0);
default:
return (ENOENT);
}
}
/*
* We rely on the CFE to have configured the intline correctly to point to
* one of PCI-A/PCI-B/PCI-C/PCI-D in the interupt mapper.
*/
static int
zbpci_route_interrupt(device_t pcib, device_t dev, int pin)
{
return (PCI_INVALID_IRQ);
}
/*
* This function is expected to be called in a critical section since it
* changes the per-cpu pci config space va-to-pa mappings.
*/
static vm_offset_t
zbpci_config_space_va(int bus, int slot, int func, int reg, int bytes)
{
int cpu;
vm_offset_t va_page;
vm_paddr_t pa, pa_page;
if (bus <= PCI_BUSMAX && slot <= PCI_SLOTMAX && func <= PCI_FUNCMAX &&
reg <= PCI_REGMAX && (bytes == 1 || bytes == 2 || bytes == 4) &&
((reg & (bytes - 1)) == 0)) {
cpu = PCPU_GET(cpuid);
va_page = zbpci_config_space[cpu].vaddr;
pa = CFG_PADDR_BASE |
(bus << 16) | (slot << 11) | (func << 8) | reg;
pa_page = pa & ~(PAGE_SIZE - 1);
if (zbpci_config_space[cpu].paddr != pa_page) {
pmap_kremove(va_page);
pmap_kenter(va_page, pa_page);
zbpci_config_space[cpu].paddr = pa_page;
}
return (va_page + (pa - pa_page));
} else {
return (0);
}
}
static uint32_t
zbpci_read_config(device_t dev, u_int b, u_int s, u_int f, u_int r, int w)
{
uint32_t data;
vm_offset_t va;
critical_enter();
va = zbpci_config_space_va(b, s, f, r, w);
if (va == 0) {
panic("zbpci_read_config: invalid %d/%d/%d[%d] %d\n",
b, s, f, r, w);
}
switch (w) {
case 4:
data = *(uint32_t *)va;
break;
case 2:
data = *(uint16_t *)va;
break;
case 1:
data = *(uint8_t *)va;
break;
default:
panic("zbpci_read_config: invalid width %d\n", w);
}
critical_exit();
return (data);
}
static void
zbpci_write_config(device_t d, u_int b, u_int s, u_int f, u_int r,
uint32_t data, int w)
{
vm_offset_t va;
critical_enter();
va = zbpci_config_space_va(b, s, f, r, w);
if (va == 0) {
panic("zbpci_write_config: invalid %d/%d/%d[%d] %d/%d\n",
b, s, f, r, data, w);
}
switch (w) {
case 4:
*(uint32_t *)va = data;
break;
case 2:
*(uint16_t *)va = data;
break;
case 1:
*(uint8_t *)va = data;
break;
default:
panic("zbpci_write_config: invalid width %d\n", w);
}
critical_exit();
}
static device_method_t zbpci_methods[] ={
/* Device interface */
DEVMETHOD(device_probe, zbpci_probe),
DEVMETHOD(device_attach, zbpci_attach),
DEVMETHOD(device_detach, bus_generic_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
/* Bus interface */
DEVMETHOD(bus_read_ivar, zbpci_read_ivar),
DEVMETHOD(bus_write_ivar, bus_generic_write_ivar),
DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_release_resource, bus_generic_release_resource),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
DEVMETHOD(bus_add_child, bus_generic_add_child),
/* pcib interface */
DEVMETHOD(pcib_maxslots, pcib_maxslots),
DEVMETHOD(pcib_read_config, zbpci_read_config),
DEVMETHOD(pcib_write_config, zbpci_write_config),
DEVMETHOD(pcib_route_interrupt, zbpci_route_interrupt),
{ 0, 0 }
};
/*
* The "zbpci" class inherits from the "pcib" base class. Therefore in
* addition to drivers that belong to the "zbpci" class we will also
* consider drivers belonging to the "pcib" when probing children of
* "zbpci".
*/
DECLARE_CLASS(pcib_driver);
DEFINE_CLASS_1(zbpci, zbpci_driver, zbpci_methods, 0, pcib_driver);
static devclass_t zbpci_devclass;
DRIVER_MODULE(zbpci, zbbus, zbpci_driver, zbpci_devclass, 0, 0);